./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/pthread/queue_longest.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version c7c6ca5d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread/queue_longest.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 5fb3c623242420f3b3352ce2377df781fcc1efd56f82dd0011f9620e127821b3 --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-09 14:52:43,174 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 14:52:43,226 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-09 14:52:43,229 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 14:52:43,231 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 14:52:43,253 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 14:52:43,254 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 14:52:43,254 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 14:52:43,255 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 14:52:43,256 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 14:52:43,256 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 14:52:43,256 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 14:52:43,256 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 14:52:43,257 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 14:52:43,257 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 14:52:43,258 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 14:52:43,258 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 14:52:43,259 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 14:52:43,259 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 14:52:43,261 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 14:52:43,262 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 14:52:43,262 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 14:52:43,262 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 14:52:43,262 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 14:52:43,262 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 14:52:43,262 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-09 14:52:43,262 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 14:52:43,263 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 14:52:43,263 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 14:52:43,263 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 14:52:43,263 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 14:52:43,263 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 14:52:43,263 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 14:52:43,263 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 14:52:43,263 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 14:52:43,264 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 14:52:43,264 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 14:52:43,264 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 14:52:43,264 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 14:52:43,264 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 14:52:43,264 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 14:52:43,266 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 14:52:43,266 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 14:52:43,266 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 14:52:43,266 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5fb3c623242420f3b3352ce2377df781fcc1efd56f82dd0011f9620e127821b3 [2024-11-09 14:52:43,471 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 14:52:43,489 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 14:52:43,492 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 14:52:43,493 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 14:52:43,493 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 14:52:43,494 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/queue_longest.i [2024-11-09 14:52:44,712 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 14:52:44,937 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 14:52:44,937 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/queue_longest.i [2024-11-09 14:52:44,951 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/343dd7d36/95656fb391a647b09519b54247a2e73b/FLAG0dab8adaf [2024-11-09 14:52:44,962 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/343dd7d36/95656fb391a647b09519b54247a2e73b [2024-11-09 14:52:44,964 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 14:52:44,965 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 14:52:44,966 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 14:52:44,966 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 14:52:44,970 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 14:52:44,972 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 02:52:44" (1/1) ... [2024-11-09 14:52:44,974 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41006dd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:52:44, skipping insertion in model container [2024-11-09 14:52:44,975 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 02:52:44" (1/1) ... [2024-11-09 14:52:45,011 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 14:52:45,348 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 14:52:45,395 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 14:52:45,431 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 14:52:45,547 INFO L204 MainTranslator]: Completed translation [2024-11-09 14:52:45,547 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:52:45 WrapperNode [2024-11-09 14:52:45,547 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 14:52:45,548 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 14:52:45,548 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 14:52:45,548 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 14:52:45,553 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:52:45" (1/1) ... [2024-11-09 14:52:45,587 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:52:45" (1/1) ... [2024-11-09 14:52:45,654 INFO L138 Inliner]: procedures = 274, calls = 1659, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 1864 [2024-11-09 14:52:45,654 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 14:52:45,655 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 14:52:45,655 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 14:52:45,655 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 14:52:45,666 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:52:45" (1/1) ... [2024-11-09 14:52:45,666 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:52:45" (1/1) ... [2024-11-09 14:52:45,682 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:52:45" (1/1) ... [2024-11-09 14:52:45,718 INFO L175 MemorySlicer]: Split 1644 memory accesses to 4 slices as follows [2, 5, 803, 834]. 51 percent of accesses are in the largest equivalence class. The 1610 initializations are split as follows [2, 5, 800, 803]. The 16 writes are split as follows [0, 0, 2, 14]. [2024-11-09 14:52:45,718 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:52:45" (1/1) ... [2024-11-09 14:52:45,719 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:52:45" (1/1) ... [2024-11-09 14:52:45,748 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:52:45" (1/1) ... [2024-11-09 14:52:45,756 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:52:45" (1/1) ... [2024-11-09 14:52:45,764 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:52:45" (1/1) ... [2024-11-09 14:52:45,769 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:52:45" (1/1) ... [2024-11-09 14:52:45,781 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 14:52:45,783 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 14:52:45,783 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 14:52:45,784 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 14:52:45,784 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:52:45" (1/1) ... [2024-11-09 14:52:45,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 14:52:45,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 14:52:45,813 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-09 14:52:45,816 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-09 14:52:45,883 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-11-09 14:52:45,883 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-11-09 14:52:45,883 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-11-09 14:52:45,883 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-11-09 14:52:45,883 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-09 14:52:45,883 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 14:52:45,884 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-09 14:52:45,884 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-09 14:52:45,884 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-09 14:52:45,884 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 14:52:45,884 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-09 14:52:45,884 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-09 14:52:45,884 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-09 14:52:45,884 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-09 14:52:45,885 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 14:52:45,885 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 14:52:45,885 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 14:52:45,885 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-09 14:52:45,885 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-09 14:52:45,885 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 14:52:45,885 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 14:52:45,890 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-09 14:52:46,023 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 14:52:46,025 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 14:52:47,475 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 14:52:47,476 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 14:53:11,900 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 14:53:11,900 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-09 14:53:11,900 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 02:53:11 BoogieIcfgContainer [2024-11-09 14:53:11,901 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 14:53:11,903 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 14:53:11,903 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 14:53:11,905 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 14:53:11,905 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 02:52:44" (1/3) ... [2024-11-09 14:53:11,906 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44ba0dfc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 02:53:11, skipping insertion in model container [2024-11-09 14:53:11,906 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:52:45" (2/3) ... [2024-11-09 14:53:11,907 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44ba0dfc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 02:53:11, skipping insertion in model container [2024-11-09 14:53:11,907 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 02:53:11" (3/3) ... [2024-11-09 14:53:11,908 INFO L112 eAbstractionObserver]: Analyzing ICFG queue_longest.i [2024-11-09 14:53:11,922 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 14:53:11,922 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2024-11-09 14:53:11,922 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 14:53:12,008 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-09 14:53:12,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 81 places, 83 transitions, 180 flow [2024-11-09 14:53:12,109 INFO L124 PetriNetUnfolderBase]: 9/81 cut-off events. [2024-11-09 14:53:12,109 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-09 14:53:12,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 81 events. 9/81 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 208 event pairs, 0 based on Foata normal form. 0/54 useless extension candidates. Maximal degree in co-relation 78. Up to 2 conditions per place. [2024-11-09 14:53:12,113 INFO L82 GeneralOperation]: Start removeDead. Operand has 81 places, 83 transitions, 180 flow [2024-11-09 14:53:12,116 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 77 places, 79 transitions, 167 flow [2024-11-09 14:53:12,125 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 14:53:12,131 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;@1fad2020, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 14:53:12,131 INFO L334 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2024-11-09 14:53:12,166 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 14:53:12,166 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2024-11-09 14:53:12,166 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 14:53:12,166 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 14:53:12,167 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-09 14:53:12,167 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-09 14:53:12,171 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 14:53:12,172 INFO L85 PathProgramCache]: Analyzing trace with hash -356156547, now seen corresponding path program 1 times [2024-11-09 14:53:12,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 14:53:12,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489905919] [2024-11-09 14:53:12,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 14:53:12,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 14:53:12,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 14:53:13,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 14:53:13,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 14:53:13,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489905919] [2024-11-09 14:53:13,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489905919] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 14:53:13,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 14:53:13,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 14:53:13,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222885107] [2024-11-09 14:53:13,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 14:53:13,930 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 14:53:13,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 14:53:13,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 14:53:13,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 14:53:13,969 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 83 [2024-11-09 14:53:13,971 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 79 transitions, 167 flow. Second operand has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 14:53:13,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 14:53:13,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 83 [2024-11-09 14:53:13,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 14:53:14,400 INFO L124 PetriNetUnfolderBase]: 1233/2525 cut-off events. [2024-11-09 14:53:14,400 INFO L125 PetriNetUnfolderBase]: For 57/57 co-relation queries the response was YES. [2024-11-09 14:53:14,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4503 conditions, 2525 events. 1233/2525 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 15719 event pairs, 205 based on Foata normal form. 48/2196 useless extension candidates. Maximal degree in co-relation 4434. Up to 1608 conditions per place. [2024-11-09 14:53:14,414 INFO L140 encePairwiseOnDemand]: 75/83 looper letters, 73 selfloop transitions, 6 changer transitions 0/109 dead transitions. [2024-11-09 14:53:14,414 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 109 transitions, 391 flow [2024-11-09 14:53:14,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 14:53:14,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 14:53:14,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 209 transitions. [2024-11-09 14:53:14,423 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6295180722891566 [2024-11-09 14:53:14,424 INFO L175 Difference]: Start difference. First operand has 77 places, 79 transitions, 167 flow. Second operand 4 states and 209 transitions. [2024-11-09 14:53:14,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 109 transitions, 391 flow [2024-11-09 14:53:14,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 109 transitions, 384 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-09 14:53:14,430 INFO L231 Difference]: Finished difference. Result has 80 places, 82 transitions, 202 flow [2024-11-09 14:53:14,431 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=202, PETRI_PLACES=80, PETRI_TRANSITIONS=82} [2024-11-09 14:53:14,433 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 3 predicate places. [2024-11-09 14:53:14,433 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 82 transitions, 202 flow [2024-11-09 14:53:14,434 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 14:53:14,434 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 14:53:14,434 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-09 14:53:14,434 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 14:53:14,434 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-09 14:53:14,435 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 14:53:14,435 INFO L85 PathProgramCache]: Analyzing trace with hash 1844052889, now seen corresponding path program 1 times [2024-11-09 14:53:14,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 14:53:14,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603354381] [2024-11-09 14:53:14,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 14:53:14,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 14:53:14,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 14:53:15,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 14:53:15,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 14:53:15,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603354381] [2024-11-09 14:53:15,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603354381] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 14:53:15,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 14:53:15,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 14:53:15,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069415235] [2024-11-09 14:53:15,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 14:53:15,569 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 14:53:15,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 14:53:15,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 14:53:15,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 14:53:15,583 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 83 [2024-11-09 14:53:15,583 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 82 transitions, 202 flow. Second operand has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 14:53:15,583 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 14:53:15,583 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 83 [2024-11-09 14:53:15,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 14:53:16,061 INFO L124 PetriNetUnfolderBase]: 1242/2581 cut-off events. [2024-11-09 14:53:16,062 INFO L125 PetriNetUnfolderBase]: For 452/455 co-relation queries the response was YES. [2024-11-09 14:53:16,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4890 conditions, 2581 events. 1242/2581 cut-off events. For 452/455 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 16541 event pairs, 264 based on Foata normal form. 38/2287 useless extension candidates. Maximal degree in co-relation 4354. Up to 1757 conditions per place. [2024-11-09 14:53:16,073 INFO L140 encePairwiseOnDemand]: 78/83 looper letters, 81 selfloop transitions, 6 changer transitions 0/117 dead transitions. [2024-11-09 14:53:16,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 117 transitions, 456 flow [2024-11-09 14:53:16,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 14:53:16,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 14:53:16,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 249 transitions. [2024-11-09 14:53:16,075 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-11-09 14:53:16,075 INFO L175 Difference]: Start difference. First operand has 80 places, 82 transitions, 202 flow. Second operand 5 states and 249 transitions. [2024-11-09 14:53:16,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 117 transitions, 456 flow [2024-11-09 14:53:16,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 117 transitions, 450 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 14:53:16,078 INFO L231 Difference]: Finished difference. Result has 84 places, 83 transitions, 219 flow [2024-11-09 14:53:16,078 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=193, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=219, PETRI_PLACES=84, PETRI_TRANSITIONS=83} [2024-11-09 14:53:16,079 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 7 predicate places. [2024-11-09 14:53:16,079 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 83 transitions, 219 flow [2024-11-09 14:53:16,079 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 14:53:16,079 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 14:53:16,080 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 14:53:16,080 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 14:53:16,080 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-09 14:53:16,080 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 14:53:16,080 INFO L85 PathProgramCache]: Analyzing trace with hash -1686540228, now seen corresponding path program 1 times [2024-11-09 14:53:16,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 14:53:16,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616626736] [2024-11-09 14:53:16,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 14:53:16,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 14:53:16,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 14:53:17,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 14:53:17,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 14:53:17,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616626736] [2024-11-09 14:53:17,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616626736] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 14:53:17,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 14:53:17,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 14:53:17,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9961998] [2024-11-09 14:53:17,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 14:53:17,312 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 14:53:17,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 14:53:17,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 14:53:17,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 14:53:17,323 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 83 [2024-11-09 14:53:17,323 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 83 transitions, 219 flow. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 14:53:17,324 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 14:53:17,324 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 83 [2024-11-09 14:53:17,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 14:53:17,915 INFO L124 PetriNetUnfolderBase]: 1322/2691 cut-off events. [2024-11-09 14:53:17,915 INFO L125 PetriNetUnfolderBase]: For 528/544 co-relation queries the response was YES. [2024-11-09 14:53:17,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5199 conditions, 2691 events. 1322/2691 cut-off events. For 528/544 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 17156 event pairs, 266 based on Foata normal form. 40/2367 useless extension candidates. Maximal degree in co-relation 4657. Up to 1803 conditions per place. [2024-11-09 14:53:17,929 INFO L140 encePairwiseOnDemand]: 74/83 looper letters, 102 selfloop transitions, 11 changer transitions 0/143 dead transitions. [2024-11-09 14:53:17,930 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 143 transitions, 585 flow [2024-11-09 14:53:17,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 14:53:17,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-09 14:53:17,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 340 transitions. [2024-11-09 14:53:17,933 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5851979345955249 [2024-11-09 14:53:17,933 INFO L175 Difference]: Start difference. First operand has 84 places, 83 transitions, 219 flow. Second operand 7 states and 340 transitions. [2024-11-09 14:53:17,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 143 transitions, 585 flow [2024-11-09 14:53:17,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 143 transitions, 571 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-11-09 14:53:17,941 INFO L231 Difference]: Finished difference. Result has 90 places, 89 transitions, 274 flow [2024-11-09 14:53:17,942 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=205, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=274, PETRI_PLACES=90, PETRI_TRANSITIONS=89} [2024-11-09 14:53:17,942 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 13 predicate places. [2024-11-09 14:53:17,942 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 89 transitions, 274 flow [2024-11-09 14:53:17,942 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 14:53:17,943 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 14:53:17,943 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 14:53:17,943 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 14:53:17,943 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-09 14:53:17,943 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 14:53:17,943 INFO L85 PathProgramCache]: Analyzing trace with hash -695850318, now seen corresponding path program 1 times [2024-11-09 14:53:17,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 14:53:17,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816477951] [2024-11-09 14:53:17,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 14:53:17,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 14:53:18,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 14:53:18,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 14:53:18,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 14:53:18,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816477951] [2024-11-09 14:53:18,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816477951] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 14:53:18,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 14:53:18,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 14:53:18,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518628895] [2024-11-09 14:53:18,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 14:53:18,324 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 14:53:18,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 14:53:18,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 14:53:18,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 14:53:18,330 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 83 [2024-11-09 14:53:18,330 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 89 transitions, 274 flow. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 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) [2024-11-09 14:53:18,330 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 14:53:18,330 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 83 [2024-11-09 14:53:18,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 14:53:18,733 INFO L124 PetriNetUnfolderBase]: 1023/2371 cut-off events. [2024-11-09 14:53:18,734 INFO L125 PetriNetUnfolderBase]: For 522/522 co-relation queries the response was YES. [2024-11-09 14:53:18,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4342 conditions, 2371 events. 1023/2371 cut-off events. For 522/522 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 13928 event pairs, 483 based on Foata normal form. 41/2110 useless extension candidates. Maximal degree in co-relation 4332. Up to 884 conditions per place. [2024-11-09 14:53:18,745 INFO L140 encePairwiseOnDemand]: 79/83 looper letters, 63 selfloop transitions, 3 changer transitions 0/96 dead transitions. [2024-11-09 14:53:18,745 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 96 transitions, 370 flow [2024-11-09 14:53:18,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 14:53:18,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 14:53:18,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 175 transitions. [2024-11-09 14:53:18,746 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7028112449799196 [2024-11-09 14:53:18,747 INFO L175 Difference]: Start difference. First operand has 90 places, 89 transitions, 274 flow. Second operand 3 states and 175 transitions. [2024-11-09 14:53:18,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 96 transitions, 370 flow [2024-11-09 14:53:18,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 96 transitions, 331 flow, removed 4 selfloop flow, removed 13 redundant places. [2024-11-09 14:53:18,752 INFO L231 Difference]: Finished difference. Result has 74 places, 75 transitions, 167 flow [2024-11-09 14:53:18,754 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=167, PETRI_PLACES=74, PETRI_TRANSITIONS=75} [2024-11-09 14:53:18,754 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, -3 predicate places. [2024-11-09 14:53:18,755 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 75 transitions, 167 flow [2024-11-09 14:53:18,755 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 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) [2024-11-09 14:53:18,755 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 14:53:18,755 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 14:53:18,755 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 14:53:18,755 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-09 14:53:18,755 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 14:53:18,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1302839221, now seen corresponding path program 1 times [2024-11-09 14:53:18,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 14:53:18,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645139289] [2024-11-09 14:53:18,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 14:53:18,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 14:53:18,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 14:53:18,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 14:53:18,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 14:53:18,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645139289] [2024-11-09 14:53:18,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645139289] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 14:53:18,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 14:53:18,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 14:53:18,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919702365] [2024-11-09 14:53:18,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 14:53:18,966 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 14:53:18,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 14:53:18,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 14:53:18,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 14:53:18,974 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 83 [2024-11-09 14:53:18,974 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 75 transitions, 167 flow. Second operand has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 14:53:18,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 14:53:18,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 83 [2024-11-09 14:53:18,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 14:53:19,582 INFO L124 PetriNetUnfolderBase]: 1890/4150 cut-off events. [2024-11-09 14:53:19,582 INFO L125 PetriNetUnfolderBase]: For 190/190 co-relation queries the response was YES. [2024-11-09 14:53:19,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7403 conditions, 4150 events. 1890/4150 cut-off events. For 190/190 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 27021 event pairs, 949 based on Foata normal form. 138/3770 useless extension candidates. Maximal degree in co-relation 7398. Up to 1977 conditions per place. [2024-11-09 14:53:19,601 INFO L140 encePairwiseOnDemand]: 77/83 looper letters, 112 selfloop transitions, 3 changer transitions 0/143 dead transitions. [2024-11-09 14:53:19,601 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 143 transitions, 550 flow [2024-11-09 14:53:19,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 14:53:19,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 14:53:19,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 251 transitions. [2024-11-09 14:53:19,602 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7560240963855421 [2024-11-09 14:53:19,602 INFO L175 Difference]: Start difference. First operand has 74 places, 75 transitions, 167 flow. Second operand 4 states and 251 transitions. [2024-11-09 14:53:19,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 143 transitions, 550 flow [2024-11-09 14:53:19,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 143 transitions, 544 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 14:53:19,606 INFO L231 Difference]: Finished difference. Result has 78 places, 77 transitions, 188 flow [2024-11-09 14:53:19,606 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=188, PETRI_PLACES=78, PETRI_TRANSITIONS=77} [2024-11-09 14:53:19,608 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 1 predicate places. [2024-11-09 14:53:19,609 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 77 transitions, 188 flow [2024-11-09 14:53:19,609 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 14:53:19,609 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 14:53:19,609 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 14:53:19,609 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 14:53:19,609 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-09 14:53:19,609 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 14:53:19,609 INFO L85 PathProgramCache]: Analyzing trace with hash -858198870, now seen corresponding path program 1 times [2024-11-09 14:53:19,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 14:53:19,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385476875] [2024-11-09 14:53:19,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 14:53:19,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 14:53:19,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 14:53:20,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 14:53:20,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 14:53:20,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385476875] [2024-11-09 14:53:20,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385476875] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 14:53:20,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 14:53:20,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 14:53:20,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177041788] [2024-11-09 14:53:20,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 14:53:20,547 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 14:53:20,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 14:53:20,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 14:53:20,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 14:53:20,548 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 83 [2024-11-09 14:53:20,548 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 77 transitions, 188 flow. Second operand has 5 states, 5 states have (on average 38.8) internal successors, (194), 5 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 14:53:20,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 14:53:20,549 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 83 [2024-11-09 14:53:20,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 14:53:21,085 INFO L124 PetriNetUnfolderBase]: 1715/3860 cut-off events. [2024-11-09 14:53:21,086 INFO L125 PetriNetUnfolderBase]: For 786/906 co-relation queries the response was YES. [2024-11-09 14:53:21,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7363 conditions, 3860 events. 1715/3860 cut-off events. For 786/906 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 25067 event pairs, 279 based on Foata normal form. 0/3418 useless extension candidates. Maximal degree in co-relation 7356. Up to 2409 conditions per place. [2024-11-09 14:53:21,109 INFO L140 encePairwiseOnDemand]: 77/83 looper letters, 74 selfloop transitions, 5 changer transitions 0/109 dead transitions. [2024-11-09 14:53:21,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 109 transitions, 464 flow [2024-11-09 14:53:21,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 14:53:21,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 14:53:21,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 251 transitions. [2024-11-09 14:53:21,111 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6048192771084338 [2024-11-09 14:53:21,111 INFO L175 Difference]: Start difference. First operand has 78 places, 77 transitions, 188 flow. Second operand 5 states and 251 transitions. [2024-11-09 14:53:21,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 109 transitions, 464 flow [2024-11-09 14:53:21,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 109 transitions, 456 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 14:53:21,113 INFO L231 Difference]: Finished difference. Result has 81 places, 76 transitions, 194 flow [2024-11-09 14:53:21,113 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=194, PETRI_PLACES=81, PETRI_TRANSITIONS=76} [2024-11-09 14:53:21,114 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 4 predicate places. [2024-11-09 14:53:21,115 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 76 transitions, 194 flow [2024-11-09 14:53:21,115 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 38.8) internal successors, (194), 5 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 14:53:21,115 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 14:53:21,115 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 14:53:21,115 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 14:53:21,115 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-09 14:53:21,116 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 14:53:21,116 INFO L85 PathProgramCache]: Analyzing trace with hash -109803669, now seen corresponding path program 1 times [2024-11-09 14:53:21,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 14:53:21,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003522783] [2024-11-09 14:53:21,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 14:53:21,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 14:53:21,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 14:53:21,403 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 14:53:21,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 14:53:21,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003522783] [2024-11-09 14:53:21,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003522783] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 14:53:21,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [313133269] [2024-11-09 14:53:21,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 14:53:21,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 14:53:21,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 14:53:21,409 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 14:53:21,412 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 14:53:21,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 14:53:21,820 INFO L255 TraceCheckSpWp]: Trace formula consists of 3362 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 14:53:21,825 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 14:53:21,869 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 14:53:21,869 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 14:53:21,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [313133269] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 14:53:21,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 14:53:21,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-09 14:53:21,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145675256] [2024-11-09 14:53:21,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 14:53:21,870 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 14:53:21,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 14:53:21,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 14:53:21,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-09 14:53:21,880 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 83 [2024-11-09 14:53:21,881 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 76 transitions, 194 flow. Second operand has 6 states, 6 states have (on average 36.166666666666664) internal successors, (217), 6 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 14:53:21,881 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 14:53:21,881 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 83 [2024-11-09 14:53:21,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 14:53:22,705 INFO L124 PetriNetUnfolderBase]: 1685/3664 cut-off events. [2024-11-09 14:53:22,706 INFO L125 PetriNetUnfolderBase]: For 501/501 co-relation queries the response was YES. [2024-11-09 14:53:22,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7248 conditions, 3664 events. 1685/3664 cut-off events. For 501/501 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 23199 event pairs, 96 based on Foata normal form. 70/3382 useless extension candidates. Maximal degree in co-relation 7241. Up to 1080 conditions per place. [2024-11-09 14:53:22,721 INFO L140 encePairwiseOnDemand]: 79/83 looper letters, 162 selfloop transitions, 5 changer transitions 0/195 dead transitions. [2024-11-09 14:53:22,721 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 195 transitions, 820 flow [2024-11-09 14:53:22,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 14:53:22,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 14:53:22,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 367 transitions. [2024-11-09 14:53:22,723 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7369477911646586 [2024-11-09 14:53:22,723 INFO L175 Difference]: Start difference. First operand has 81 places, 76 transitions, 194 flow. Second operand 6 states and 367 transitions. [2024-11-09 14:53:22,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 195 transitions, 820 flow [2024-11-09 14:53:22,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 195 transitions, 778 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-09 14:53:22,727 INFO L231 Difference]: Finished difference. Result has 81 places, 75 transitions, 190 flow [2024-11-09 14:53:22,728 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=190, PETRI_PLACES=81, PETRI_TRANSITIONS=75} [2024-11-09 14:53:22,728 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 4 predicate places. [2024-11-09 14:53:22,729 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 75 transitions, 190 flow [2024-11-09 14:53:22,729 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 36.166666666666664) internal successors, (217), 6 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 14:53:22,729 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 14:53:22,729 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 14:53:22,746 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 14:53:22,933 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 14:53:22,934 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-09 14:53:22,934 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 14:53:22,934 INFO L85 PathProgramCache]: Analyzing trace with hash -1606301204, now seen corresponding path program 1 times [2024-11-09 14:53:22,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 14:53:22,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550849016] [2024-11-09 14:53:22,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 14:53:22,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 14:53:23,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 14:53:26,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 14:53:26,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 14:53:26,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550849016] [2024-11-09 14:53:26,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550849016] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 14:53:26,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 14:53:26,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-09 14:53:26,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087622732] [2024-11-09 14:53:26,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 14:53:26,192 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 14:53:26,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 14:53:26,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 14:53:26,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-09 14:53:26,259 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 83 [2024-11-09 14:53:26,260 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 75 transitions, 190 flow. Second operand has 10 states, 10 states have (on average 29.6) internal successors, (296), 10 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 14:53:26,260 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 14:53:26,260 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 83 [2024-11-09 14:53:26,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 14:53:27,504 INFO L124 PetriNetUnfolderBase]: 2309/4784 cut-off events. [2024-11-09 14:53:27,505 INFO L125 PetriNetUnfolderBase]: For 2033/2109 co-relation queries the response was YES. [2024-11-09 14:53:27,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9934 conditions, 4784 events. 2309/4784 cut-off events. For 2033/2109 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 30991 event pairs, 444 based on Foata normal form. 22/4274 useless extension candidates. Maximal degree in co-relation 9927. Up to 2448 conditions per place. [2024-11-09 14:53:27,533 INFO L140 encePairwiseOnDemand]: 74/83 looper letters, 134 selfloop transitions, 8 changer transitions 0/167 dead transitions. [2024-11-09 14:53:27,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 167 transitions, 845 flow [2024-11-09 14:53:27,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 14:53:27,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-09 14:53:27,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 378 transitions. [2024-11-09 14:53:27,535 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5060240963855421 [2024-11-09 14:53:27,535 INFO L175 Difference]: Start difference. First operand has 81 places, 75 transitions, 190 flow. Second operand 9 states and 378 transitions. [2024-11-09 14:53:27,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 167 transitions, 845 flow [2024-11-09 14:53:27,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 167 transitions, 805 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-09 14:53:27,540 INFO L231 Difference]: Finished difference. Result has 89 places, 78 transitions, 222 flow [2024-11-09 14:53:27,540 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=222, PETRI_PLACES=89, PETRI_TRANSITIONS=78} [2024-11-09 14:53:27,542 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 12 predicate places. [2024-11-09 14:53:27,542 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 78 transitions, 222 flow [2024-11-09 14:53:27,543 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 29.6) internal successors, (296), 10 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 14:53:27,543 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 14:53:27,543 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 14:53:27,543 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 14:53:27,543 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-09 14:53:27,544 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 14:53:27,544 INFO L85 PathProgramCache]: Analyzing trace with hash 891057576, now seen corresponding path program 1 times [2024-11-09 14:53:27,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 14:53:27,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889755847] [2024-11-09 14:53:27,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 14:53:27,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 14:53:27,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 14:53:27,753 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 14:53:27,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 14:53:27,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889755847] [2024-11-09 14:53:27,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889755847] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 14:53:27,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 14:53:27,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 14:53:27,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450921296] [2024-11-09 14:53:27,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 14:53:27,754 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 14:53:27,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 14:53:27,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 14:53:27,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 14:53:27,761 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 83 [2024-11-09 14:53:27,761 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 78 transitions, 222 flow. Second operand has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 14:53:27,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 14:53:27,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 83 [2024-11-09 14:53:27,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 14:53:28,269 INFO L124 PetriNetUnfolderBase]: 1994/4213 cut-off events. [2024-11-09 14:53:28,269 INFO L125 PetriNetUnfolderBase]: For 1316/1370 co-relation queries the response was YES. [2024-11-09 14:53:28,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8828 conditions, 4213 events. 1994/4213 cut-off events. For 1316/1370 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 27192 event pairs, 368 based on Foata normal form. 83/3984 useless extension candidates. Maximal degree in co-relation 8819. Up to 1995 conditions per place. [2024-11-09 14:53:28,290 INFO L140 encePairwiseOnDemand]: 78/83 looper letters, 98 selfloop transitions, 6 changer transitions 6/138 dead transitions. [2024-11-09 14:53:28,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 138 transitions, 612 flow [2024-11-09 14:53:28,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 14:53:28,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 14:53:28,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 232 transitions. [2024-11-09 14:53:28,292 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6987951807228916 [2024-11-09 14:53:28,293 INFO L175 Difference]: Start difference. First operand has 89 places, 78 transitions, 222 flow. Second operand 4 states and 232 transitions. [2024-11-09 14:53:28,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 138 transitions, 612 flow [2024-11-09 14:53:28,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 138 transitions, 586 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-11-09 14:53:28,298 INFO L231 Difference]: Finished difference. Result has 87 places, 76 transitions, 222 flow [2024-11-09 14:53:28,299 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=222, PETRI_PLACES=87, PETRI_TRANSITIONS=76} [2024-11-09 14:53:28,299 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 10 predicate places. [2024-11-09 14:53:28,300 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 76 transitions, 222 flow [2024-11-09 14:53:28,300 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 14:53:28,300 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 14:53:28,300 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 14:53:28,300 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-09 14:53:28,301 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-09 14:53:28,302 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 14:53:28,303 INFO L85 PathProgramCache]: Analyzing trace with hash 1744274213, now seen corresponding path program 1 times [2024-11-09 14:53:28,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 14:53:28,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421136281] [2024-11-09 14:53:28,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 14:53:28,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 14:53:28,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat