./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/goblint-regression/13-privatized_69-refine-protected-loop-interval_true.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version da043454 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/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_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/goblint-regression/13-privatized_69-refine-protected-loop-interval_true.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 4a65477eb93c2031bed3e6d454d38e75e9833f23496d456d5084dd6ae5f38687 --- Real Ultimate output --- This is Ultimate 0.3.0-wip.fs.system-includes-da04345-m [2025-04-30 10:19:13,801 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-30 10:19:13,854 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-04-30 10:19:13,861 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-30 10:19:13,863 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-30 10:19:13,886 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-30 10:19:13,887 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-30 10:19:13,888 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-30 10:19:13,888 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-30 10:19:13,888 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-30 10:19:13,888 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-30 10:19:13,889 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-30 10:19:13,889 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-30 10:19:13,889 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-30 10:19:13,889 INFO L153 SettingsManager]: * Use SBE=true [2025-04-30 10:19:13,890 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-30 10:19:13,890 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-30 10:19:13,890 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-30 10:19:13,890 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-30 10:19:13,890 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-30 10:19:13,890 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-30 10:19:13,890 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-30 10:19:13,890 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-30 10:19:13,890 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-30 10:19:13,890 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-04-30 10:19:13,890 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-04-30 10:19:13,890 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-30 10:19:13,891 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-30 10:19:13,891 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-30 10:19:13,891 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-30 10:19:13,891 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-30 10:19:13,891 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-30 10:19:13,891 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-30 10:19:13,891 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-30 10:19:13,891 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-30 10:19:13,891 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-30 10:19:13,892 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-30 10:19:13,892 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-30 10:19:13,892 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-30 10:19:13,892 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-30 10:19:13,892 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-30 10:19:13,892 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-30 10:19:13,892 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-30 10:19:13,892 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-30 10:19:13,892 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-30 10:19:13,892 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-30 10:19:13,892 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-30 10:19:13,892 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-30 10:19:13,892 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-30 10:19:13,892 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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 -> 4a65477eb93c2031bed3e6d454d38e75e9833f23496d456d5084dd6ae5f38687 [2025-04-30 10:19:14,097 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-30 10:19:14,105 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-30 10:19:14,107 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-30 10:19:14,107 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-30 10:19:14,108 INFO L274 PluginConnector]: CDTParser initialized [2025-04-30 10:19:14,109 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_69-refine-protected-loop-interval_true.i [2025-04-30 10:19:15,380 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cca1e39e2/5e9bf934feb7452f9b72bc67977b2951/FLAG7b4d782c7 [2025-04-30 10:19:15,663 INFO L389 CDTParser]: Found 1 translation units. [2025-04-30 10:19:15,664 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_69-refine-protected-loop-interval_true.i [2025-04-30 10:19:15,678 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cca1e39e2/5e9bf934feb7452f9b72bc67977b2951/FLAG7b4d782c7 [2025-04-30 10:19:16,430 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cca1e39e2/5e9bf934feb7452f9b72bc67977b2951 [2025-04-30 10:19:16,433 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-30 10:19:16,434 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-04-30 10:19:16,435 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-30 10:19:16,435 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-30 10:19:16,438 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-30 10:19:16,439 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.04 10:19:16" (1/1) ... [2025-04-30 10:19:16,439 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22756dd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:19:16, skipping insertion in model container [2025-04-30 10:19:16,439 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.04 10:19:16" (1/1) ... [2025-04-30 10:19:16,459 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-30 10:19:16,707 INFO L211 PostProcessor]: Analyzing one entry point: main [2025-04-30 10:19:16,720 INFO L200 MainTranslator]: Completed pre-run [2025-04-30 10:19:16,782 INFO L211 PostProcessor]: Analyzing one entry point: main [2025-04-30 10:19:16,810 INFO L204 MainTranslator]: Completed translation [2025-04-30 10:19:16,811 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:19:16 WrapperNode [2025-04-30 10:19:16,811 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-30 10:19:16,811 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-30 10:19:16,812 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-30 10:19:16,812 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-30 10:19:16,815 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:19:16" (1/1) ... [2025-04-30 10:19:16,825 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:19:16" (1/1) ... [2025-04-30 10:19:16,839 INFO L138 Inliner]: procedures = 165, calls = 24, calls flagged for inlining = 8, calls inlined = 9, statements flattened = 100 [2025-04-30 10:19:16,839 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-30 10:19:16,839 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-30 10:19:16,839 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-30 10:19:16,840 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-30 10:19:16,847 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:19:16" (1/1) ... [2025-04-30 10:19:16,848 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:19:16" (1/1) ... [2025-04-30 10:19:16,850 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:19:16" (1/1) ... [2025-04-30 10:19:16,860 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [2, 5]. 71 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5]. The 0 writes are split as follows [0, 0]. [2025-04-30 10:19:16,860 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:19:16" (1/1) ... [2025-04-30 10:19:16,860 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:19:16" (1/1) ... [2025-04-30 10:19:16,863 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:19:16" (1/1) ... [2025-04-30 10:19:16,867 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:19:16" (1/1) ... [2025-04-30 10:19:16,869 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:19:16" (1/1) ... [2025-04-30 10:19:16,870 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:19:16" (1/1) ... [2025-04-30 10:19:16,871 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:19:16" (1/1) ... [2025-04-30 10:19:16,874 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-30 10:19:16,875 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-30 10:19:16,875 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-30 10:19:16,875 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-30 10:19:16,875 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:19:16" (1/1) ... [2025-04-30 10:19:16,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-30 10:19:16,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-30 10:19:16,898 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) [2025-04-30 10:19:16,901 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 [2025-04-30 10:19:16,922 INFO L130 BoogieDeclarations]: Found specification of procedure worker [2025-04-30 10:19:16,922 INFO L138 BoogieDeclarations]: Found implementation of procedure worker [2025-04-30 10:19:16,922 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-04-30 10:19:16,922 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-30 10:19:16,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-04-30 10:19:16,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-04-30 10:19:16,922 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-04-30 10:19:16,922 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-30 10:19:16,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-30 10:19:16,923 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-04-30 10:19:17,024 INFO L234 CfgBuilder]: Building ICFG [2025-04-30 10:19:17,025 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-30 10:19:17,218 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-30 10:19:17,218 INFO L283 CfgBuilder]: Performing block encoding [2025-04-30 10:19:17,331 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-30 10:19:17,331 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2025-04-30 10:19:17,332 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.04 10:19:17 BoogieIcfgContainer [2025-04-30 10:19:17,332 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-30 10:19:17,333 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-30 10:19:17,333 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-30 10:19:17,336 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-30 10:19:17,337 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.04 10:19:16" (1/3) ... [2025-04-30 10:19:17,338 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@db07da2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.04 10:19:17, skipping insertion in model container [2025-04-30 10:19:17,339 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:19:16" (2/3) ... [2025-04-30 10:19:17,339 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@db07da2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.04 10:19:17, skipping insertion in model container [2025-04-30 10:19:17,339 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.04 10:19:17" (3/3) ... [2025-04-30 10:19:17,340 INFO L128 eAbstractionObserver]: Analyzing ICFG 13-privatized_69-refine-protected-loop-interval_true.i [2025-04-30 10:19:17,350 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-30 10:19:17,351 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 13-privatized_69-refine-protected-loop-interval_true.i that has 2 procedures, 34 locations, 37 edges, 1 initial locations, 3 loop locations, and 6 error locations. [2025-04-30 10:19:17,351 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-30 10:19:17,389 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-04-30 10:19:17,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 37 places, 38 transitions, 80 flow [2025-04-30 10:19:17,439 INFO L116 PetriNetUnfolderBase]: 5/37 cut-off events. [2025-04-30 10:19:17,441 INFO L117 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-04-30 10:19:17,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41 conditions, 37 events. 5/37 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 78 event pairs, 0 based on Foata normal form. 0/26 useless extension candidates. Maximal degree in co-relation 35. Up to 2 conditions per place. [2025-04-30 10:19:17,446 INFO L82 GeneralOperation]: Start removeDead. Operand has 37 places, 38 transitions, 80 flow [2025-04-30 10:19:17,448 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 36 places, 37 transitions, 77 flow [2025-04-30 10:19:17,455 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-30 10:19:17,462 INFO L340 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;@5e0d7bee, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-30 10:19:17,462 INFO L341 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2025-04-30 10:19:17,467 INFO L177 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-04-30 10:19:17,467 INFO L116 PetriNetUnfolderBase]: 1/17 cut-off events. [2025-04-30 10:19:17,467 INFO L117 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-04-30 10:19:17,468 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-30 10:19:17,468 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-04-30 10:19:17,468 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2025-04-30 10:19:17,472 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:19:17,473 INFO L85 PathProgramCache]: Analyzing trace with hash -1318978010, now seen corresponding path program 1 times [2025-04-30 10:19:17,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:19:17,478 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626461207] [2025-04-30 10:19:17,478 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:19:17,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:19:17,551 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-04-30 10:19:17,569 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-04-30 10:19:17,570 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:19:17,570 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:19:17,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-30 10:19:17,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:19:17,715 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626461207] [2025-04-30 10:19:17,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626461207] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:19:17,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:19:17,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-30 10:19:17,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23217255] [2025-04-30 10:19:17,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:19:17,720 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-30 10:19:17,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:19:17,738 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-30 10:19:17,738 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-30 10:19:17,766 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 38 [2025-04-30 10:19:17,768 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 37 transitions, 77 flow. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 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) [2025-04-30 10:19:17,768 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-30 10:19:17,768 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 38 [2025-04-30 10:19:17,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-30 10:19:17,949 INFO L116 PetriNetUnfolderBase]: 184/403 cut-off events. [2025-04-30 10:19:17,950 INFO L117 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-04-30 10:19:17,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 738 conditions, 403 events. 184/403 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1790 event pairs, 14 based on Foata normal form. 4/335 useless extension candidates. Maximal degree in co-relation 729. Up to 222 conditions per place. [2025-04-30 10:19:17,957 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 44 selfloop transitions, 8 changer transitions 1/66 dead transitions. [2025-04-30 10:19:17,957 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 66 transitions, 241 flow [2025-04-30 10:19:17,960 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-30 10:19:17,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-04-30 10:19:17,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 132 transitions. [2025-04-30 10:19:17,971 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.6947368421052632 [2025-04-30 10:19:17,972 INFO L175 Difference]: Start difference. First operand has 36 places, 37 transitions, 77 flow. Second operand 5 states and 132 transitions. [2025-04-30 10:19:17,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 66 transitions, 241 flow [2025-04-30 10:19:17,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 66 transitions, 240 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-04-30 10:19:17,979 INFO L231 Difference]: Finished difference. Result has 42 places, 43 transitions, 142 flow [2025-04-30 10:19:17,981 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=142, PETRI_PLACES=42, PETRI_TRANSITIONS=43} [2025-04-30 10:19:17,984 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 6 predicate places. [2025-04-30 10:19:17,984 INFO L485 AbstractCegarLoop]: Abstraction has has 42 places, 43 transitions, 142 flow [2025-04-30 10:19:17,984 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 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) [2025-04-30 10:19:17,985 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-30 10:19:17,985 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-30 10:19:17,985 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-30 10:19:17,985 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2025-04-30 10:19:17,986 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:19:17,986 INFO L85 PathProgramCache]: Analyzing trace with hash 384359707, now seen corresponding path program 1 times [2025-04-30 10:19:17,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:19:17,987 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476198620] [2025-04-30 10:19:17,987 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:19:17,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:19:17,997 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-04-30 10:19:18,009 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-04-30 10:19:18,009 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:19:18,009 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:19:18,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-30 10:19:18,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:19:18,100 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476198620] [2025-04-30 10:19:18,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476198620] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:19:18,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:19:18,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-30 10:19:18,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890197110] [2025-04-30 10:19:18,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:19:18,101 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-30 10:19:18,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:19:18,101 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-30 10:19:18,101 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-30 10:19:18,112 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2025-04-30 10:19:18,112 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 43 transitions, 142 flow. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 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) [2025-04-30 10:19:18,112 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-30 10:19:18,113 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2025-04-30 10:19:18,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-30 10:19:18,262 INFO L116 PetriNetUnfolderBase]: 212/481 cut-off events. [2025-04-30 10:19:18,262 INFO L117 PetriNetUnfolderBase]: For 248/250 co-relation queries the response was YES. [2025-04-30 10:19:18,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1148 conditions, 481 events. 212/481 cut-off events. For 248/250 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 2226 event pairs, 43 based on Foata normal form. 11/463 useless extension candidates. Maximal degree in co-relation 1134. Up to 285 conditions per place. [2025-04-30 10:19:18,267 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 53 selfloop transitions, 4 changer transitions 1/72 dead transitions. [2025-04-30 10:19:18,268 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 72 transitions, 356 flow [2025-04-30 10:19:18,269 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-30 10:19:18,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-04-30 10:19:18,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 110 transitions. [2025-04-30 10:19:18,270 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.7236842105263158 [2025-04-30 10:19:18,271 INFO L175 Difference]: Start difference. First operand has 42 places, 43 transitions, 142 flow. Second operand 4 states and 110 transitions. [2025-04-30 10:19:18,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 72 transitions, 356 flow [2025-04-30 10:19:18,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 72 transitions, 356 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-04-30 10:19:18,273 INFO L231 Difference]: Finished difference. Result has 47 places, 46 transitions, 182 flow [2025-04-30 10:19:18,273 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=182, PETRI_PLACES=47, PETRI_TRANSITIONS=46} [2025-04-30 10:19:18,275 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 11 predicate places. [2025-04-30 10:19:18,275 INFO L485 AbstractCegarLoop]: Abstraction has has 47 places, 46 transitions, 182 flow [2025-04-30 10:19:18,276 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 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) [2025-04-30 10:19:18,276 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-30 10:19:18,276 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-30 10:19:18,276 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-04-30 10:19:18,277 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting workerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2025-04-30 10:19:18,277 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:19:18,278 INFO L85 PathProgramCache]: Analyzing trace with hash -560726867, now seen corresponding path program 1 times [2025-04-30 10:19:18,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:19:18,278 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938419654] [2025-04-30 10:19:18,278 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:19:18,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:19:18,288 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-04-30 10:19:18,299 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-04-30 10:19:18,299 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:19:18,299 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:19:18,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-30 10:19:18,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:19:18,386 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938419654] [2025-04-30 10:19:18,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938419654] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:19:18,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:19:18,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-30 10:19:18,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616858885] [2025-04-30 10:19:18,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:19:18,388 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-30 10:19:18,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:19:18,388 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-30 10:19:18,388 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-30 10:19:18,388 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 38 [2025-04-30 10:19:18,389 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 46 transitions, 182 flow. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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) [2025-04-30 10:19:18,389 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-30 10:19:18,389 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 38 [2025-04-30 10:19:18,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-30 10:19:18,449 INFO L116 PetriNetUnfolderBase]: 96/281 cut-off events. [2025-04-30 10:19:18,449 INFO L117 PetriNetUnfolderBase]: For 211/219 co-relation queries the response was YES. [2025-04-30 10:19:18,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 679 conditions, 281 events. 96/281 cut-off events. For 211/219 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1213 event pairs, 27 based on Foata normal form. 11/283 useless extension candidates. Maximal degree in co-relation 662. Up to 110 conditions per place. [2025-04-30 10:19:18,451 INFO L140 encePairwiseOnDemand]: 33/38 looper letters, 28 selfloop transitions, 5 changer transitions 3/52 dead transitions. [2025-04-30 10:19:18,451 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 52 transitions, 272 flow [2025-04-30 10:19:18,452 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-30 10:19:18,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-04-30 10:19:18,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 80 transitions. [2025-04-30 10:19:18,454 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.7017543859649122 [2025-04-30 10:19:18,454 INFO L175 Difference]: Start difference. First operand has 47 places, 46 transitions, 182 flow. Second operand 3 states and 80 transitions. [2025-04-30 10:19:18,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 52 transitions, 272 flow [2025-04-30 10:19:18,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 52 transitions, 263 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-04-30 10:19:18,456 INFO L231 Difference]: Finished difference. Result has 47 places, 41 transitions, 150 flow [2025-04-30 10:19:18,456 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=150, PETRI_PLACES=47, PETRI_TRANSITIONS=41} [2025-04-30 10:19:18,458 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 11 predicate places. [2025-04-30 10:19:18,458 INFO L485 AbstractCegarLoop]: Abstraction has has 47 places, 41 transitions, 150 flow [2025-04-30 10:19:18,458 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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) [2025-04-30 10:19:18,458 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-30 10:19:18,459 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-30 10:19:18,459 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-04-30 10:19:18,459 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting workerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2025-04-30 10:19:18,460 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:19:18,460 INFO L85 PathProgramCache]: Analyzing trace with hash 1987202989, now seen corresponding path program 1 times [2025-04-30 10:19:18,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:19:18,460 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231543786] [2025-04-30 10:19:18,460 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:19:18,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:19:18,471 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-04-30 10:19:18,477 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-04-30 10:19:18,481 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:19:18,481 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:19:18,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-30 10:19:18,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:19:18,525 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231543786] [2025-04-30 10:19:18,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231543786] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:19:18,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:19:18,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-30 10:19:18,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543391632] [2025-04-30 10:19:18,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:19:18,525 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-30 10:19:18,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:19:18,527 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-30 10:19:18,527 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-30 10:19:18,534 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 38 [2025-04-30 10:19:18,534 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 41 transitions, 150 flow. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:19:18,534 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-30 10:19:18,534 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 38 [2025-04-30 10:19:18,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-30 10:19:18,629 INFO L116 PetriNetUnfolderBase]: 131/354 cut-off events. [2025-04-30 10:19:18,629 INFO L117 PetriNetUnfolderBase]: For 232/245 co-relation queries the response was YES. [2025-04-30 10:19:18,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 898 conditions, 354 events. 131/354 cut-off events. For 232/245 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1454 event pairs, 46 based on Foata normal form. 12/350 useless extension candidates. Maximal degree in co-relation 881. Up to 153 conditions per place. [2025-04-30 10:19:18,631 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 42 selfloop transitions, 5 changer transitions 0/58 dead transitions. [2025-04-30 10:19:18,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 58 transitions, 326 flow [2025-04-30 10:19:18,631 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-30 10:19:18,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-04-30 10:19:18,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 93 transitions. [2025-04-30 10:19:18,632 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.6118421052631579 [2025-04-30 10:19:18,632 INFO L175 Difference]: Start difference. First operand has 47 places, 41 transitions, 150 flow. Second operand 4 states and 93 transitions. [2025-04-30 10:19:18,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 58 transitions, 326 flow [2025-04-30 10:19:18,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 58 transitions, 319 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-04-30 10:19:18,634 INFO L231 Difference]: Finished difference. Result has 48 places, 40 transitions, 176 flow [2025-04-30 10:19:18,634 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=176, PETRI_PLACES=48, PETRI_TRANSITIONS=40} [2025-04-30 10:19:18,634 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 12 predicate places. [2025-04-30 10:19:18,635 INFO L485 AbstractCegarLoop]: Abstraction has has 48 places, 40 transitions, 176 flow [2025-04-30 10:19:18,635 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:19:18,635 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-30 10:19:18,635 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-30 10:19:18,635 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-04-30 10:19:18,635 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting workerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2025-04-30 10:19:18,635 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:19:18,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1473750868, now seen corresponding path program 1 times [2025-04-30 10:19:18,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:19:18,636 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981720200] [2025-04-30 10:19:18,636 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:19:18,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:19:18,642 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-04-30 10:19:18,649 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-04-30 10:19:18,650 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:19:18,650 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:19:18,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-30 10:19:18,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:19:18,725 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981720200] [2025-04-30 10:19:18,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981720200] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:19:18,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:19:18,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-30 10:19:18,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631507316] [2025-04-30 10:19:18,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:19:18,726 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-04-30 10:19:18,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:19:18,726 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-04-30 10:19:18,726 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-04-30 10:19:18,741 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2025-04-30 10:19:18,741 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 40 transitions, 176 flow. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 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) [2025-04-30 10:19:18,741 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-30 10:19:18,741 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2025-04-30 10:19:18,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-30 10:19:18,886 INFO L116 PetriNetUnfolderBase]: 176/442 cut-off events. [2025-04-30 10:19:18,886 INFO L117 PetriNetUnfolderBase]: For 493/505 co-relation queries the response was YES. [2025-04-30 10:19:18,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1188 conditions, 442 events. 176/442 cut-off events. For 493/505 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1724 event pairs, 36 based on Foata normal form. 9/451 useless extension candidates. Maximal degree in co-relation 1169. Up to 217 conditions per place. [2025-04-30 10:19:18,888 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 49 selfloop transitions, 11 changer transitions 7/76 dead transitions. [2025-04-30 10:19:18,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 76 transitions, 457 flow [2025-04-30 10:19:18,889 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-04-30 10:19:18,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-04-30 10:19:18,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 154 transitions. [2025-04-30 10:19:18,889 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.506578947368421 [2025-04-30 10:19:18,889 INFO L175 Difference]: Start difference. First operand has 48 places, 40 transitions, 176 flow. Second operand 8 states and 154 transitions. [2025-04-30 10:19:18,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 76 transitions, 457 flow [2025-04-30 10:19:18,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 76 transitions, 451 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-04-30 10:19:18,891 INFO L231 Difference]: Finished difference. Result has 57 places, 46 transitions, 249 flow [2025-04-30 10:19:18,892 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=249, PETRI_PLACES=57, PETRI_TRANSITIONS=46} [2025-04-30 10:19:18,892 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 21 predicate places. [2025-04-30 10:19:18,892 INFO L485 AbstractCegarLoop]: Abstraction has has 57 places, 46 transitions, 249 flow [2025-04-30 10:19:18,892 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 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) [2025-04-30 10:19:18,892 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-30 10:19:18,892 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-30 10:19:18,892 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-04-30 10:19:18,893 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2025-04-30 10:19:18,893 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:19:18,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1154177964, now seen corresponding path program 1 times [2025-04-30 10:19:18,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:19:18,893 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479112255] [2025-04-30 10:19:18,893 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:19:18,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:19:18,902 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-04-30 10:19:18,906 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-04-30 10:19:18,906 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:19:18,906 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:19:18,950 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-30 10:19:18,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:19:18,950 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479112255] [2025-04-30 10:19:18,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479112255] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-30 10:19:18,950 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1434660205] [2025-04-30 10:19:18,950 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:19:18,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-30 10:19:18,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-30 10:19:18,952 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) [2025-04-30 10:19:18,954 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-04-30 10:19:18,991 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-04-30 10:19:19,003 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-04-30 10:19:19,003 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:19:19,003 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:19:19,005 INFO L256 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-04-30 10:19:19,008 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-30 10:19:19,061 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-30 10:19:19,061 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-04-30 10:19:19,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1434660205] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:19:19,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-04-30 10:19:19,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-04-30 10:19:19,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985451209] [2025-04-30 10:19:19,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:19:19,062 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-04-30 10:19:19,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:19:19,063 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-04-30 10:19:19,063 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-04-30 10:19:19,071 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 38 [2025-04-30 10:19:19,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 46 transitions, 249 flow. Second operand has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 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) [2025-04-30 10:19:19,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-30 10:19:19,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 38 [2025-04-30 10:19:19,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-30 10:19:19,256 INFO L116 PetriNetUnfolderBase]: 210/557 cut-off events. [2025-04-30 10:19:19,256 INFO L117 PetriNetUnfolderBase]: For 912/919 co-relation queries the response was YES. [2025-04-30 10:19:19,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1570 conditions, 557 events. 210/557 cut-off events. For 912/919 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2317 event pairs, 49 based on Foata normal form. 15/572 useless extension candidates. Maximal degree in co-relation 1546. Up to 180 conditions per place. [2025-04-30 10:19:19,260 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 63 selfloop transitions, 21 changer transitions 3/97 dead transitions. [2025-04-30 10:19:19,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 97 transitions, 663 flow [2025-04-30 10:19:19,262 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-04-30 10:19:19,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-04-30 10:19:19,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 210 transitions. [2025-04-30 10:19:19,262 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5526315789473685 [2025-04-30 10:19:19,263 INFO L175 Difference]: Start difference. First operand has 57 places, 46 transitions, 249 flow. Second operand 10 states and 210 transitions. [2025-04-30 10:19:19,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 97 transitions, 663 flow [2025-04-30 10:19:19,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 97 transitions, 649 flow, removed 2 selfloop flow, removed 3 redundant places. [2025-04-30 10:19:19,267 INFO L231 Difference]: Finished difference. Result has 69 places, 58 transitions, 424 flow [2025-04-30 10:19:19,268 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=424, PETRI_PLACES=69, PETRI_TRANSITIONS=58} [2025-04-30 10:19:19,268 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 33 predicate places. [2025-04-30 10:19:19,269 INFO L485 AbstractCegarLoop]: Abstraction has has 69 places, 58 transitions, 424 flow [2025-04-30 10:19:19,269 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 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) [2025-04-30 10:19:19,269 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-30 10:19:19,269 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-30 10:19:19,275 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-04-30 10:19:19,474 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2025-04-30 10:19:19,474 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2025-04-30 10:19:19,474 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:19:19,474 INFO L85 PathProgramCache]: Analyzing trace with hash -1419778178, now seen corresponding path program 1 times [2025-04-30 10:19:19,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:19:19,474 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721134502] [2025-04-30 10:19:19,474 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:19:19,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:19:19,482 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-04-30 10:19:19,486 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-04-30 10:19:19,487 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:19:19,487 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:19:19,518 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-04-30 10:19:19,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:19:19,519 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721134502] [2025-04-30 10:19:19,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721134502] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:19:19,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:19:19,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-30 10:19:19,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98479811] [2025-04-30 10:19:19,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:19:19,519 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-30 10:19:19,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:19:19,520 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-30 10:19:19,520 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-30 10:19:19,523 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2025-04-30 10:19:19,523 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 58 transitions, 424 flow. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:19:19,523 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-30 10:19:19,524 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2025-04-30 10:19:19,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-30 10:19:19,610 INFO L116 PetriNetUnfolderBase]: 205/546 cut-off events. [2025-04-30 10:19:19,611 INFO L117 PetriNetUnfolderBase]: For 1801/1810 co-relation queries the response was YES. [2025-04-30 10:19:19,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1780 conditions, 546 events. 205/546 cut-off events. For 1801/1810 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2219 event pairs, 82 based on Foata normal form. 16/558 useless extension candidates. Maximal degree in co-relation 1749. Up to 310 conditions per place. [2025-04-30 10:19:19,616 INFO L140 encePairwiseOnDemand]: 35/38 looper letters, 45 selfloop transitions, 10 changer transitions 0/68 dead transitions. [2025-04-30 10:19:19,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 68 transitions, 609 flow [2025-04-30 10:19:19,617 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-30 10:19:19,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-04-30 10:19:19,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 76 transitions. [2025-04-30 10:19:19,618 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2025-04-30 10:19:19,618 INFO L175 Difference]: Start difference. First operand has 69 places, 58 transitions, 424 flow. Second operand 3 states and 76 transitions. [2025-04-30 10:19:19,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 68 transitions, 609 flow [2025-04-30 10:19:19,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 68 transitions, 584 flow, removed 9 selfloop flow, removed 2 redundant places. [2025-04-30 10:19:19,623 INFO L231 Difference]: Finished difference. Result has 69 places, 57 transitions, 430 flow [2025-04-30 10:19:19,624 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=386, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=430, PETRI_PLACES=69, PETRI_TRANSITIONS=57} [2025-04-30 10:19:19,625 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 33 predicate places. [2025-04-30 10:19:19,625 INFO L485 AbstractCegarLoop]: Abstraction has has 69 places, 57 transitions, 430 flow [2025-04-30 10:19:19,625 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:19:19,625 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-30 10:19:19,625 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2025-04-30 10:19:19,626 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-04-30 10:19:19,626 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2025-04-30 10:19:19,627 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:19:19,627 INFO L85 PathProgramCache]: Analyzing trace with hash 226540617, now seen corresponding path program 1 times [2025-04-30 10:19:19,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:19:19,627 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28396886] [2025-04-30 10:19:19,627 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:19:19,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:19:19,634 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-04-30 10:19:19,638 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-04-30 10:19:19,638 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:19:19,638 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:19:19,697 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-30 10:19:19,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:19:19,697 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28396886] [2025-04-30 10:19:19,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28396886] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-30 10:19:19,697 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1746906342] [2025-04-30 10:19:19,697 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:19:19,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-30 10:19:19,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-30 10:19:19,699 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) [2025-04-30 10:19:19,701 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-04-30 10:19:19,747 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-04-30 10:19:19,761 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-04-30 10:19:19,761 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:19:19,761 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:19:19,762 INFO L256 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-04-30 10:19:19,763 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-30 10:19:19,810 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-30 10:19:19,810 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-04-30 10:19:19,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1746906342] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:19:19,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-04-30 10:19:19,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2025-04-30 10:19:19,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964360580] [2025-04-30 10:19:19,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:19:19,810 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-04-30 10:19:19,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:19:19,811 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-04-30 10:19:19,811 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-04-30 10:19:19,817 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2025-04-30 10:19:19,817 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 57 transitions, 430 flow. Second operand has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 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) [2025-04-30 10:19:19,817 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-30 10:19:19,817 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2025-04-30 10:19:19,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-30 10:19:19,993 INFO L116 PetriNetUnfolderBase]: 221/556 cut-off events. [2025-04-30 10:19:19,993 INFO L117 PetriNetUnfolderBase]: For 2070/2070 co-relation queries the response was YES. [2025-04-30 10:19:19,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1909 conditions, 556 events. 221/556 cut-off events. For 2070/2070 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 2216 event pairs, 17 based on Foata normal form. 18/556 useless extension candidates. Maximal degree in co-relation 1877. Up to 237 conditions per place. [2025-04-30 10:19:19,997 INFO L140 encePairwiseOnDemand]: 33/38 looper letters, 68 selfloop transitions, 12 changer transitions 5/97 dead transitions. [2025-04-30 10:19:19,998 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 97 transitions, 878 flow [2025-04-30 10:19:19,998 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-30 10:19:19,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-04-30 10:19:19,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 149 transitions. [2025-04-30 10:19:19,999 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.6535087719298246 [2025-04-30 10:19:19,999 INFO L175 Difference]: Start difference. First operand has 69 places, 57 transitions, 430 flow. Second operand 6 states and 149 transitions. [2025-04-30 10:19:19,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 97 transitions, 878 flow [2025-04-30 10:19:20,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 97 transitions, 864 flow, removed 2 selfloop flow, removed 1 redundant places. [2025-04-30 10:19:20,007 INFO L231 Difference]: Finished difference. Result has 72 places, 56 transitions, 436 flow [2025-04-30 10:19:20,008 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=412, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=436, PETRI_PLACES=72, PETRI_TRANSITIONS=56} [2025-04-30 10:19:20,009 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 36 predicate places. [2025-04-30 10:19:20,010 INFO L485 AbstractCegarLoop]: Abstraction has has 72 places, 56 transitions, 436 flow [2025-04-30 10:19:20,011 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 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) [2025-04-30 10:19:20,011 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-30 10:19:20,011 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2025-04-30 10:19:20,017 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-04-30 10:19:20,215 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2025-04-30 10:19:20,215 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2025-04-30 10:19:20,215 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:19:20,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1567175159, now seen corresponding path program 1 times [2025-04-30 10:19:20,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:19:20,216 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119904168] [2025-04-30 10:19:20,216 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:19:20,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:19:20,222 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-04-30 10:19:20,228 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-04-30 10:19:20,229 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:19:20,229 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:19:20,293 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-30 10:19:20,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:19:20,294 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119904168] [2025-04-30 10:19:20,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119904168] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-30 10:19:20,294 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1091641029] [2025-04-30 10:19:20,294 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:19:20,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-30 10:19:20,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-30 10:19:20,296 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) [2025-04-30 10:19:20,298 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-04-30 10:19:20,342 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-04-30 10:19:20,355 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-04-30 10:19:20,355 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:19:20,355 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:19:20,356 INFO L256 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-04-30 10:19:20,357 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-30 10:19:20,404 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-30 10:19:20,405 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-30 10:19:20,456 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-30 10:19:20,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1091641029] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-30 10:19:20,456 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-30 10:19:20,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2025-04-30 10:19:20,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824903971] [2025-04-30 10:19:20,456 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-30 10:19:20,457 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-04-30 10:19:20,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:19:20,457 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-04-30 10:19:20,457 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-04-30 10:19:20,468 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2025-04-30 10:19:20,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 56 transitions, 436 flow. Second operand has 12 states, 12 states have (on average 18.333333333333332) internal successors, (220), 12 states have internal predecessors, (220), 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) [2025-04-30 10:19:20,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-30 10:19:20,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2025-04-30 10:19:20,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-30 10:19:20,764 INFO L116 PetriNetUnfolderBase]: 477/1164 cut-off events. [2025-04-30 10:19:20,764 INFO L117 PetriNetUnfolderBase]: For 4990/4990 co-relation queries the response was YES. [2025-04-30 10:19:20,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4215 conditions, 1164 events. 477/1164 cut-off events. For 4990/4990 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 5767 event pairs, 60 based on Foata normal form. 45/1209 useless extension candidates. Maximal degree in co-relation 4183. Up to 374 conditions per place. [2025-04-30 10:19:20,773 INFO L140 encePairwiseOnDemand]: 33/38 looper letters, 131 selfloop transitions, 21 changer transitions 22/186 dead transitions. [2025-04-30 10:19:20,773 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 186 transitions, 1773 flow [2025-04-30 10:19:20,773 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-04-30 10:19:20,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-04-30 10:19:20,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 267 transitions. [2025-04-30 10:19:20,774 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.7026315789473684 [2025-04-30 10:19:20,774 INFO L175 Difference]: Start difference. First operand has 72 places, 56 transitions, 436 flow. Second operand 10 states and 267 transitions. [2025-04-30 10:19:20,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 186 transitions, 1773 flow [2025-04-30 10:19:20,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 186 transitions, 1748 flow, removed 4 selfloop flow, removed 4 redundant places. [2025-04-30 10:19:20,786 INFO L231 Difference]: Finished difference. Result has 83 places, 72 transitions, 678 flow [2025-04-30 10:19:20,786 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=420, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=678, PETRI_PLACES=83, PETRI_TRANSITIONS=72} [2025-04-30 10:19:20,787 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 47 predicate places. [2025-04-30 10:19:20,787 INFO L485 AbstractCegarLoop]: Abstraction has has 83 places, 72 transitions, 678 flow [2025-04-30 10:19:20,787 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 18.333333333333332) internal successors, (220), 12 states have internal predecessors, (220), 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) [2025-04-30 10:19:20,787 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-30 10:19:20,787 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-30 10:19:20,793 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-04-30 10:19:20,992 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-30 10:19:20,992 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2025-04-30 10:19:20,992 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:19:20,992 INFO L85 PathProgramCache]: Analyzing trace with hash 53007469, now seen corresponding path program 1 times [2025-04-30 10:19:20,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:19:20,992 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157453879] [2025-04-30 10:19:20,992 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:19:20,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:19:20,999 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-04-30 10:19:21,003 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-04-30 10:19:21,003 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:19:21,003 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:19:21,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-30 10:19:21,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:19:21,049 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157453879] [2025-04-30 10:19:21,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157453879] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:19:21,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:19:21,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-04-30 10:19:21,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538437605] [2025-04-30 10:19:21,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:19:21,049 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-04-30 10:19:21,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:19:21,050 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-04-30 10:19:21,050 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-04-30 10:19:21,064 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2025-04-30 10:19:21,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 72 transitions, 678 flow. Second operand has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 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) [2025-04-30 10:19:21,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-30 10:19:21,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2025-04-30 10:19:21,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-30 10:19:21,320 INFO L116 PetriNetUnfolderBase]: 560/1342 cut-off events. [2025-04-30 10:19:21,320 INFO L117 PetriNetUnfolderBase]: For 8717/8724 co-relation queries the response was YES. [2025-04-30 10:19:21,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5332 conditions, 1342 events. 560/1342 cut-off events. For 8717/8724 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 6890 event pairs, 51 based on Foata normal form. 36/1374 useless extension candidates. Maximal degree in co-relation 5295. Up to 461 conditions per place. [2025-04-30 10:19:21,331 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 74 selfloop transitions, 50 changer transitions 0/132 dead transitions. [2025-04-30 10:19:21,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 132 transitions, 1522 flow [2025-04-30 10:19:21,332 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-04-30 10:19:21,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-04-30 10:19:21,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 146 transitions. [2025-04-30 10:19:21,333 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.48026315789473684 [2025-04-30 10:19:21,333 INFO L175 Difference]: Start difference. First operand has 83 places, 72 transitions, 678 flow. Second operand 8 states and 146 transitions. [2025-04-30 10:19:21,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 132 transitions, 1522 flow [2025-04-30 10:19:21,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 132 transitions, 1494 flow, removed 9 selfloop flow, removed 2 redundant places. [2025-04-30 10:19:21,349 INFO L231 Difference]: Finished difference. Result has 91 places, 91 transitions, 1143 flow [2025-04-30 10:19:21,350 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=658, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1143, PETRI_PLACES=91, PETRI_TRANSITIONS=91} [2025-04-30 10:19:21,350 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 55 predicate places. [2025-04-30 10:19:21,350 INFO L485 AbstractCegarLoop]: Abstraction has has 91 places, 91 transitions, 1143 flow [2025-04-30 10:19:21,350 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 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) [2025-04-30 10:19:21,350 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-30 10:19:21,350 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-30 10:19:21,350 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-04-30 10:19:21,351 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting workerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2025-04-30 10:19:21,351 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:19:21,351 INFO L85 PathProgramCache]: Analyzing trace with hash 1508248834, now seen corresponding path program 1 times [2025-04-30 10:19:21,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:19:21,351 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209439074] [2025-04-30 10:19:21,351 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:19:21,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:19:21,358 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-04-30 10:19:21,361 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-04-30 10:19:21,361 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:19:21,361 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:19:21,427 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-30 10:19:21,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:19:21,427 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209439074] [2025-04-30 10:19:21,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209439074] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-30 10:19:21,428 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1205338159] [2025-04-30 10:19:21,428 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:19:21,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-30 10:19:21,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-30 10:19:21,430 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) [2025-04-30 10:19:21,432 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-04-30 10:19:21,470 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-04-30 10:19:21,482 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-04-30 10:19:21,483 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:19:21,483 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:19:21,484 INFO L256 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-04-30 10:19:21,485 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-30 10:19:21,534 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-30 10:19:21,534 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-30 10:19:21,572 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-30 10:19:21,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1205338159] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-30 10:19:21,573 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-30 10:19:21,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2025-04-30 10:19:21,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631981929] [2025-04-30 10:19:21,573 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-30 10:19:21,573 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-04-30 10:19:21,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:19:21,573 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-04-30 10:19:21,573 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2025-04-30 10:19:21,600 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2025-04-30 10:19:21,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 91 transitions, 1143 flow. Second operand has 12 states, 12 states have (on average 14.333333333333334) internal successors, (172), 12 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) [2025-04-30 10:19:21,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-30 10:19:21,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2025-04-30 10:19:21,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-30 10:19:21,977 INFO L116 PetriNetUnfolderBase]: 667/1657 cut-off events. [2025-04-30 10:19:21,977 INFO L117 PetriNetUnfolderBase]: For 15803/15810 co-relation queries the response was YES. [2025-04-30 10:19:21,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7256 conditions, 1657 events. 667/1657 cut-off events. For 15803/15810 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 8259 event pairs, 78 based on Foata normal form. 68/1721 useless extension candidates. Maximal degree in co-relation 7213. Up to 430 conditions per place. [2025-04-30 10:19:21,989 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 104 selfloop transitions, 87 changer transitions 31/230 dead transitions. [2025-04-30 10:19:21,989 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 230 transitions, 3012 flow [2025-04-30 10:19:21,990 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-04-30 10:19:21,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2025-04-30 10:19:21,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 352 transitions. [2025-04-30 10:19:21,991 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.44110275689223055 [2025-04-30 10:19:21,991 INFO L175 Difference]: Start difference. First operand has 91 places, 91 transitions, 1143 flow. Second operand 21 states and 352 transitions. [2025-04-30 10:19:21,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 230 transitions, 3012 flow [2025-04-30 10:19:22,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 230 transitions, 2813 flow, removed 65 selfloop flow, removed 4 redundant places. [2025-04-30 10:19:22,011 INFO L231 Difference]: Finished difference. Result has 110 places, 126 transitions, 1855 flow [2025-04-30 10:19:22,011 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1032, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1855, PETRI_PLACES=110, PETRI_TRANSITIONS=126} [2025-04-30 10:19:22,011 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 74 predicate places. [2025-04-30 10:19:22,012 INFO L485 AbstractCegarLoop]: Abstraction has has 110 places, 126 transitions, 1855 flow [2025-04-30 10:19:22,012 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 14.333333333333334) internal successors, (172), 12 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) [2025-04-30 10:19:22,012 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-30 10:19:22,012 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 2, 1, 1, 1, 1] [2025-04-30 10:19:22,018 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-04-30 10:19:22,213 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-30 10:19:22,213 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2025-04-30 10:19:22,213 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:19:22,214 INFO L85 PathProgramCache]: Analyzing trace with hash -235434991, now seen corresponding path program 1 times [2025-04-30 10:19:22,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:19:22,214 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984385522] [2025-04-30 10:19:22,214 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:19:22,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:19:22,220 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 49 statements into 1 equivalence classes. [2025-04-30 10:19:22,226 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 49 of 49 statements. [2025-04-30 10:19:22,226 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:19:22,226 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:19:22,329 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 40 proven. 42 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-04-30 10:19:22,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:19:22,329 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984385522] [2025-04-30 10:19:22,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984385522] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-30 10:19:22,330 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1963360113] [2025-04-30 10:19:22,330 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:19:22,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-30 10:19:22,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-30 10:19:22,332 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) [2025-04-30 10:19:22,333 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-04-30 10:19:22,383 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 49 statements into 1 equivalence classes. [2025-04-30 10:19:22,401 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 49 of 49 statements. [2025-04-30 10:19:22,401 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:19:22,401 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:19:22,402 INFO L256 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-04-30 10:19:22,404 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-30 10:19:22,458 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 40 proven. 42 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-04-30 10:19:22,458 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-30 10:19:22,546 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 40 proven. 42 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-04-30 10:19:22,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1963360113] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-30 10:19:22,547 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-30 10:19:22,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2025-04-30 10:19:22,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683367341] [2025-04-30 10:19:22,547 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-30 10:19:22,547 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-04-30 10:19:22,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:19:22,548 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-04-30 10:19:22,548 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2025-04-30 10:19:22,561 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 38 [2025-04-30 10:19:22,562 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 126 transitions, 1855 flow. Second operand has 18 states, 18 states have (on average 16.72222222222222) internal successors, (301), 18 states have internal predecessors, (301), 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) [2025-04-30 10:19:22,562 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-30 10:19:22,562 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 38 [2025-04-30 10:19:22,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-30 10:19:22,998 INFO L116 PetriNetUnfolderBase]: 660/1764 cut-off events. [2025-04-30 10:19:22,999 INFO L117 PetriNetUnfolderBase]: For 17688/17695 co-relation queries the response was YES. [2025-04-30 10:19:23,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8242 conditions, 1764 events. 660/1764 cut-off events. For 17688/17695 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 9314 event pairs, 230 based on Foata normal form. 8/1772 useless extension candidates. Maximal degree in co-relation 8196. Up to 931 conditions per place. [2025-04-30 10:19:23,012 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 205 selfloop transitions, 75 changer transitions 10/298 dead transitions. [2025-04-30 10:19:23,012 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 298 transitions, 3923 flow [2025-04-30 10:19:23,013 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2025-04-30 10:19:23,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2025-04-30 10:19:23,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 601 transitions. [2025-04-30 10:19:23,015 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5101867572156197 [2025-04-30 10:19:23,015 INFO L175 Difference]: Start difference. First operand has 110 places, 126 transitions, 1855 flow. Second operand 31 states and 601 transitions. [2025-04-30 10:19:23,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 298 transitions, 3923 flow [2025-04-30 10:19:23,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 298 transitions, 3594 flow, removed 96 selfloop flow, removed 8 redundant places. [2025-04-30 10:19:23,046 INFO L231 Difference]: Finished difference. Result has 142 places, 165 transitions, 2452 flow [2025-04-30 10:19:23,046 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1647, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=2452, PETRI_PLACES=142, PETRI_TRANSITIONS=165} [2025-04-30 10:19:23,046 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 106 predicate places. [2025-04-30 10:19:23,046 INFO L485 AbstractCegarLoop]: Abstraction has has 142 places, 165 transitions, 2452 flow [2025-04-30 10:19:23,047 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 16.72222222222222) internal successors, (301), 18 states have internal predecessors, (301), 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) [2025-04-30 10:19:23,047 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-30 10:19:23,047 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1] [2025-04-30 10:19:23,053 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-04-30 10:19:23,247 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2025-04-30 10:19:23,248 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2025-04-30 10:19:23,248 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:19:23,248 INFO L85 PathProgramCache]: Analyzing trace with hash -1764619585, now seen corresponding path program 2 times [2025-04-30 10:19:23,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:19:23,248 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676766044] [2025-04-30 10:19:23,248 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-30 10:19:23,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:19:23,256 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 53 statements into 2 equivalence classes. [2025-04-30 10:19:23,265 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 53 of 53 statements. [2025-04-30 10:19:23,265 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-30 10:19:23,265 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:19:23,414 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-30 10:19:23,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:19:23,414 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676766044] [2025-04-30 10:19:23,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676766044] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-30 10:19:23,414 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [386980733] [2025-04-30 10:19:23,415 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-30 10:19:23,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-30 10:19:23,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-30 10:19:23,416 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) [2025-04-30 10:19:23,418 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-04-30 10:19:23,459 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 53 statements into 2 equivalence classes. [2025-04-30 10:19:23,479 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 53 of 53 statements. [2025-04-30 10:19:23,479 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-30 10:19:23,479 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:19:23,480 INFO L256 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-04-30 10:19:23,481 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-30 10:19:23,551 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-30 10:19:23,551 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-30 10:19:23,715 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-30 10:19:23,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [386980733] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-30 10:19:23,715 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-30 10:19:23,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2025-04-30 10:19:23,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021612490] [2025-04-30 10:19:23,715 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-30 10:19:23,716 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-04-30 10:19:23,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:19:23,716 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-04-30 10:19:23,717 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2025-04-30 10:19:23,734 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2025-04-30 10:19:23,735 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 165 transitions, 2452 flow. Second operand has 24 states, 24 states have (on average 18.416666666666668) internal successors, (442), 24 states have internal predecessors, (442), 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) [2025-04-30 10:19:23,735 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-30 10:19:23,735 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2025-04-30 10:19:23,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-30 10:19:24,666 INFO L116 PetriNetUnfolderBase]: 1837/4646 cut-off events. [2025-04-30 10:19:24,666 INFO L117 PetriNetUnfolderBase]: For 46394/46394 co-relation queries the response was YES. [2025-04-30 10:19:24,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20986 conditions, 4646 events. 1837/4646 cut-off events. For 46394/46394 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 25497 event pairs, 101 based on Foata normal form. 215/4861 useless extension candidates. Maximal degree in co-relation 20930. Up to 661 conditions per place. [2025-04-30 10:19:24,701 INFO L140 encePairwiseOnDemand]: 34/38 looper letters, 531 selfloop transitions, 135 changer transitions 96/773 dead transitions. [2025-04-30 10:19:24,701 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 773 transitions, 11322 flow [2025-04-30 10:19:24,702 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-04-30 10:19:24,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2025-04-30 10:19:24,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 584 transitions. [2025-04-30 10:19:24,703 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.6985645933014354 [2025-04-30 10:19:24,703 INFO L175 Difference]: Start difference. First operand has 142 places, 165 transitions, 2452 flow. Second operand 22 states and 584 transitions. [2025-04-30 10:19:24,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 773 transitions, 11322 flow [2025-04-30 10:19:24,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 773 transitions, 11077 flow, removed 73 selfloop flow, removed 4 redundant places. [2025-04-30 10:19:24,778 INFO L231 Difference]: Finished difference. Result has 169 places, 239 transitions, 4022 flow [2025-04-30 10:19:24,778 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2326, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=4022, PETRI_PLACES=169, PETRI_TRANSITIONS=239} [2025-04-30 10:19:24,779 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 133 predicate places. [2025-04-30 10:19:24,779 INFO L485 AbstractCegarLoop]: Abstraction has has 169 places, 239 transitions, 4022 flow [2025-04-30 10:19:24,779 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 18.416666666666668) internal successors, (442), 24 states have internal predecessors, (442), 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) [2025-04-30 10:19:24,779 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-30 10:19:24,779 INFO L206 CegarLoopForPetriNet]: trace histogram [11, 11, 11, 11, 11, 11, 10, 7, 7, 7, 4, 1, 1, 1, 1] [2025-04-30 10:19:24,785 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-04-30 10:19:24,979 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-30 10:19:24,980 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2025-04-30 10:19:24,980 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:19:24,981 INFO L85 PathProgramCache]: Analyzing trace with hash 1065145679, now seen corresponding path program 2 times [2025-04-30 10:19:24,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:19:24,981 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743733085] [2025-04-30 10:19:24,981 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-30 10:19:24,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:19:24,991 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 105 statements into 2 equivalence classes. [2025-04-30 10:19:25,006 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 105 of 105 statements. [2025-04-30 10:19:25,006 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-30 10:19:25,006 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:19:25,316 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 40 proven. 394 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2025-04-30 10:19:25,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:19:25,317 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743733085] [2025-04-30 10:19:25,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743733085] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-30 10:19:25,317 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1251990113] [2025-04-30 10:19:25,317 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-30 10:19:25,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-30 10:19:25,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-30 10:19:25,319 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) [2025-04-30 10:19:25,320 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-04-30 10:19:25,377 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 105 statements into 2 equivalence classes. [2025-04-30 10:19:25,419 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 105 of 105 statements. [2025-04-30 10:19:25,420 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-30 10:19:25,420 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:19:25,421 INFO L256 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-04-30 10:19:25,424 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-30 10:19:25,549 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 40 proven. 394 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2025-04-30 10:19:25,549 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-30 10:19:25,829 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 40 proven. 394 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2025-04-30 10:19:25,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1251990113] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-30 10:19:25,829 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-30 10:19:25,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 33 [2025-04-30 10:19:25,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830322622] [2025-04-30 10:19:25,829 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-30 10:19:25,830 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2025-04-30 10:19:25,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:19:25,831 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2025-04-30 10:19:25,831 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=816, Unknown=0, NotChecked=0, Total=1122 [2025-04-30 10:19:25,863 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 38 [2025-04-30 10:19:25,864 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 239 transitions, 4022 flow. Second operand has 34 states, 34 states have (on average 16.558823529411764) internal successors, (563), 34 states have internal predecessors, (563), 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) [2025-04-30 10:19:25,864 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-30 10:19:25,864 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 38 [2025-04-30 10:19:25,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-30 10:19:27,246 INFO L116 PetriNetUnfolderBase]: 1978/5172 cut-off events. [2025-04-30 10:19:27,246 INFO L117 PetriNetUnfolderBase]: For 61635/61636 co-relation queries the response was YES. [2025-04-30 10:19:27,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25135 conditions, 5172 events. 1978/5172 cut-off events. For 61635/61636 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 29710 event pairs, 834 based on Foata normal form. 16/5188 useless extension candidates. Maximal degree in co-relation 25069. Up to 2980 conditions per place. [2025-04-30 10:19:27,277 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 445 selfloop transitions, 151 changer transitions 26/630 dead transitions. [2025-04-30 10:19:27,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 630 transitions, 8937 flow [2025-04-30 10:19:27,277 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2025-04-30 10:19:27,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2025-04-30 10:19:27,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 1291 transitions. [2025-04-30 10:19:27,280 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.507069913589945 [2025-04-30 10:19:27,280 INFO L175 Difference]: Start difference. First operand has 169 places, 239 transitions, 4022 flow. Second operand 67 states and 1291 transitions. [2025-04-30 10:19:27,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 630 transitions, 8937 flow [2025-04-30 10:19:27,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 630 transitions, 8538 flow, removed 139 selfloop flow, removed 9 redundant places. [2025-04-30 10:19:27,387 INFO L231 Difference]: Finished difference. Result has 244 places, 319 transitions, 5697 flow [2025-04-30 10:19:27,388 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3753, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=67, PETRI_FLOW=5697, PETRI_PLACES=244, PETRI_TRANSITIONS=319} [2025-04-30 10:19:27,388 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 208 predicate places. [2025-04-30 10:19:27,389 INFO L485 AbstractCegarLoop]: Abstraction has has 244 places, 319 transitions, 5697 flow [2025-04-30 10:19:27,389 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 16.558823529411764) internal successors, (563), 34 states have internal predecessors, (563), 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) [2025-04-30 10:19:27,389 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-30 10:19:27,390 INFO L206 CegarLoopForPetriNet]: trace histogram [11, 11, 11, 11, 11, 11, 10, 8, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-30 10:19:27,396 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-04-30 10:19:27,590 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-30 10:19:27,591 INFO L403 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2025-04-30 10:19:27,592 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:19:27,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1243962704, now seen corresponding path program 1 times [2025-04-30 10:19:27,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:19:27,592 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44599986] [2025-04-30 10:19:27,592 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:19:27,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:19:27,602 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 106 statements into 1 equivalence classes. [2025-04-30 10:19:27,615 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 106 of 106 statements. [2025-04-30 10:19:27,615 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:19:27,615 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:19:27,752 INFO L134 CoverageAnalysis]: Checked inductivity of 353 backedges. 141 proven. 16 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2025-04-30 10:19:27,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:19:27,752 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44599986] [2025-04-30 10:19:27,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44599986] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-30 10:19:27,753 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [416396193] [2025-04-30 10:19:27,753 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:19:27,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-30 10:19:27,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-30 10:19:27,755 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) [2025-04-30 10:19:27,757 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-04-30 10:19:27,815 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 106 statements into 1 equivalence classes. [2025-04-30 10:19:27,847 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 106 of 106 statements. [2025-04-30 10:19:27,847 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:19:27,847 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:19:27,850 INFO L256 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-04-30 10:19:27,852 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-30 10:19:27,902 INFO L134 CoverageAnalysis]: Checked inductivity of 353 backedges. 141 proven. 16 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2025-04-30 10:19:27,902 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-30 10:19:27,978 INFO L134 CoverageAnalysis]: Checked inductivity of 353 backedges. 141 proven. 16 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2025-04-30 10:19:27,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [416396193] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-30 10:19:27,979 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-30 10:19:27,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 15 [2025-04-30 10:19:27,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931516408] [2025-04-30 10:19:27,979 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-30 10:19:27,979 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-04-30 10:19:27,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:19:27,980 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-04-30 10:19:27,980 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2025-04-30 10:19:28,009 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2025-04-30 10:19:28,010 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 319 transitions, 5697 flow. Second operand has 16 states, 16 states have (on average 15.125) internal successors, (242), 16 states have internal predecessors, (242), 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) [2025-04-30 10:19:28,010 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-30 10:19:28,010 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2025-04-30 10:19:28,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-30 10:19:29,832 INFO L116 PetriNetUnfolderBase]: 3266/8681 cut-off events. [2025-04-30 10:19:29,832 INFO L117 PetriNetUnfolderBase]: For 108049/108067 co-relation queries the response was YES. [2025-04-30 10:19:29,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41469 conditions, 8681 events. 3266/8681 cut-off events. For 108049/108067 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 56765 event pairs, 611 based on Foata normal form. 132/8813 useless extension candidates. Maximal degree in co-relation 41382. Up to 2115 conditions per place. [2025-04-30 10:19:29,892 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 373 selfloop transitions, 331 changer transitions 18/730 dead transitions. [2025-04-30 10:19:29,892 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 730 transitions, 11847 flow [2025-04-30 10:19:29,894 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2025-04-30 10:19:29,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2025-04-30 10:19:29,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 614 transitions. [2025-04-30 10:19:29,895 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.4366998577524893 [2025-04-30 10:19:29,895 INFO L175 Difference]: Start difference. First operand has 244 places, 319 transitions, 5697 flow. Second operand 37 states and 614 transitions. [2025-04-30 10:19:29,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 730 transitions, 11847 flow [2025-04-30 10:19:30,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 730 transitions, 11389 flow, removed 185 selfloop flow, removed 26 redundant places. [2025-04-30 10:19:30,163 INFO L231 Difference]: Finished difference. Result has 257 places, 503 transitions, 9272 flow [2025-04-30 10:19:30,163 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5045, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=167, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=9272, PETRI_PLACES=257, PETRI_TRANSITIONS=503} [2025-04-30 10:19:30,163 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 221 predicate places. [2025-04-30 10:19:30,163 INFO L485 AbstractCegarLoop]: Abstraction has has 257 places, 503 transitions, 9272 flow [2025-04-30 10:19:30,164 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 15.125) internal successors, (242), 16 states have internal predecessors, (242), 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) [2025-04-30 10:19:30,164 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-30 10:19:30,164 INFO L206 CegarLoopForPetriNet]: trace histogram [11, 11, 11, 11, 11, 11, 10, 7, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-30 10:19:30,169 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-04-30 10:19:30,364 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2025-04-30 10:19:30,364 INFO L403 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2025-04-30 10:19:30,365 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:19:30,365 INFO L85 PathProgramCache]: Analyzing trace with hash 163667515, now seen corresponding path program 2 times [2025-04-30 10:19:30,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:19:30,365 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256551899] [2025-04-30 10:19:30,365 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-30 10:19:30,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:19:30,374 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 108 statements into 2 equivalence classes. [2025-04-30 10:19:30,377 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 30 of 108 statements. [2025-04-30 10:19:30,377 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-04-30 10:19:30,377 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:19:30,416 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2025-04-30 10:19:30,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:19:30,416 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256551899] [2025-04-30 10:19:30,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256551899] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:19:30,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:19:30,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-04-30 10:19:30,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070116358] [2025-04-30 10:19:30,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:19:30,417 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-04-30 10:19:30,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:19:30,417 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-04-30 10:19:30,417 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-04-30 10:19:30,435 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2025-04-30 10:19:30,435 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 503 transitions, 9272 flow. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 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) [2025-04-30 10:19:30,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-30 10:19:30,435 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2025-04-30 10:19:30,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-30 10:19:32,102 INFO L116 PetriNetUnfolderBase]: 3242/8735 cut-off events. [2025-04-30 10:19:32,102 INFO L117 PetriNetUnfolderBase]: For 123673/123685 co-relation queries the response was YES. [2025-04-30 10:19:32,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44213 conditions, 8735 events. 3242/8735 cut-off events. For 123673/123685 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 57699 event pairs, 353 based on Foata normal form. 21/8719 useless extension candidates. Maximal degree in co-relation 44119. Up to 2276 conditions per place. [2025-04-30 10:19:32,171 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 119 selfloop transitions, 468 changer transitions 0/595 dead transitions. [2025-04-30 10:19:32,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 595 transitions, 11539 flow [2025-04-30 10:19:32,172 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-04-30 10:19:32,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-04-30 10:19:32,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 166 transitions. [2025-04-30 10:19:32,173 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.4368421052631579 [2025-04-30 10:19:32,173 INFO L175 Difference]: Start difference. First operand has 257 places, 503 transitions, 9272 flow. Second operand 10 states and 166 transitions. [2025-04-30 10:19:32,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 595 transitions, 11539 flow [2025-04-30 10:19:32,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 595 transitions, 11220 flow, removed 93 selfloop flow, removed 8 redundant places. [2025-04-30 10:19:32,539 INFO L231 Difference]: Finished difference. Result has 258 places, 527 transitions, 10366 flow [2025-04-30 10:19:32,539 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8854, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=498, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=439, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10366, PETRI_PLACES=258, PETRI_TRANSITIONS=527} [2025-04-30 10:19:32,540 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 222 predicate places. [2025-04-30 10:19:32,540 INFO L485 AbstractCegarLoop]: Abstraction has has 258 places, 527 transitions, 10366 flow [2025-04-30 10:19:32,540 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 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) [2025-04-30 10:19:32,540 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-30 10:19:32,540 INFO L206 CegarLoopForPetriNet]: trace histogram [11, 11, 11, 11, 11, 11, 10, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-30 10:19:32,540 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-04-30 10:19:32,540 INFO L403 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2025-04-30 10:19:32,541 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:19:32,541 INFO L85 PathProgramCache]: Analyzing trace with hash -263325678, now seen corresponding path program 3 times [2025-04-30 10:19:32,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:19:32,541 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816028587] [2025-04-30 10:19:32,541 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-30 10:19:32,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:19:32,553 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 110 statements into 8 equivalence classes. [2025-04-30 10:19:32,585 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) and asserted 110 of 110 statements. [2025-04-30 10:19:32,586 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2025-04-30 10:19:32,586 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:19:32,810 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 27 proven. 96 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2025-04-30 10:19:32,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:19:32,810 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816028587] [2025-04-30 10:19:32,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816028587] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-30 10:19:32,810 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [170897512] [2025-04-30 10:19:32,811 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-30 10:19:32,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-30 10:19:32,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-30 10:19:32,812 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-30 10:19:32,813 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-04-30 10:19:32,885 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 110 statements into 8 equivalence classes. [2025-04-30 10:19:32,946 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) and asserted 110 of 110 statements. [2025-04-30 10:19:32,946 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2025-04-30 10:19:32,946 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:19:32,948 INFO L256 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-04-30 10:19:32,953 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-30 10:19:33,067 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 27 proven. 96 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2025-04-30 10:19:33,067 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-30 10:19:33,225 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 27 proven. 96 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2025-04-30 10:19:33,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [170897512] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-30 10:19:33,225 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-30 10:19:33,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2025-04-30 10:19:33,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407176219] [2025-04-30 10:19:33,225 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-30 10:19:33,225 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-04-30 10:19:33,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:19:33,226 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-04-30 10:19:33,226 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=415, Unknown=0, NotChecked=0, Total=552 [2025-04-30 10:19:33,257 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2025-04-30 10:19:33,257 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 527 transitions, 10366 flow. Second operand has 24 states, 24 states have (on average 14.833333333333334) internal successors, (356), 24 states have internal predecessors, (356), 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) [2025-04-30 10:19:33,257 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-30 10:19:33,257 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2025-04-30 10:19:33,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-30 10:19:37,055 INFO L116 PetriNetUnfolderBase]: 5730/15433 cut-off events. [2025-04-30 10:19:37,055 INFO L117 PetriNetUnfolderBase]: For 231489/231529 co-relation queries the response was YES. [2025-04-30 10:19:37,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80584 conditions, 15433 events. 5730/15433 cut-off events. For 231489/231529 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 119227 event pairs, 800 based on Foata normal form. 84/15517 useless extension candidates. Maximal degree in co-relation 80491. Up to 2093 conditions per place. [2025-04-30 10:19:37,172 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 458 selfloop transitions, 748 changer transitions 16/1230 dead transitions. [2025-04-30 10:19:37,172 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 1230 transitions, 23488 flow [2025-04-30 10:19:37,172 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2025-04-30 10:19:37,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2025-04-30 10:19:37,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 911 transitions. [2025-04-30 10:19:37,174 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.42059095106186517 [2025-04-30 10:19:37,174 INFO L175 Difference]: Start difference. First operand has 258 places, 527 transitions, 10366 flow. Second operand 57 states and 911 transitions. [2025-04-30 10:19:37,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 1230 transitions, 23488 flow [2025-04-30 10:19:37,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 1230 transitions, 23323 flow, removed 80 selfloop flow, removed 2 redundant places. [2025-04-30 10:19:37,866 INFO L231 Difference]: Finished difference. Result has 317 places, 944 transitions, 20841 flow [2025-04-30 10:19:37,866 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=10192, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=521, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=409, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=57, PETRI_FLOW=20841, PETRI_PLACES=317, PETRI_TRANSITIONS=944} [2025-04-30 10:19:37,867 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 281 predicate places. [2025-04-30 10:19:37,867 INFO L485 AbstractCegarLoop]: Abstraction has has 317 places, 944 transitions, 20841 flow [2025-04-30 10:19:37,867 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 14.833333333333334) internal successors, (356), 24 states have internal predecessors, (356), 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) [2025-04-30 10:19:37,867 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-30 10:19:37,867 INFO L206 CegarLoopForPetriNet]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 1, 1, 1, 1] [2025-04-30 10:19:37,873 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-04-30 10:19:38,067 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2025-04-30 10:19:38,067 INFO L403 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2025-04-30 10:19:38,068 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:19:38,068 INFO L85 PathProgramCache]: Analyzing trace with hash 825490603, now seen corresponding path program 3 times [2025-04-30 10:19:38,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:19:38,068 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934196832] [2025-04-30 10:19:38,068 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-30 10:19:38,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:19:38,077 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 113 statements into 11 equivalence classes. [2025-04-30 10:19:38,110 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) and asserted 113 of 113 statements. [2025-04-30 10:19:38,110 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2025-04-30 10:19:38,110 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:19:38,685 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 0 proven. 550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-30 10:19:38,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:19:38,685 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934196832] [2025-04-30 10:19:38,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934196832] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-30 10:19:38,686 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1092743493] [2025-04-30 10:19:38,686 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-30 10:19:38,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-30 10:19:38,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-30 10:19:38,688 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-30 10:19:38,689 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-04-30 10:19:38,754 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 113 statements into 11 equivalence classes. [2025-04-30 10:19:38,817 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) and asserted 113 of 113 statements. [2025-04-30 10:19:38,817 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2025-04-30 10:19:38,817 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:19:38,820 INFO L256 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 23 conjuncts are in the unsatisfiable core [2025-04-30 10:19:38,822 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-30 10:19:38,936 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 0 proven. 550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-30 10:19:38,937 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-30 10:19:39,317 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 0 proven. 550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-30 10:19:39,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1092743493] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-30 10:19:39,317 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-30 10:19:39,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 47 [2025-04-30 10:19:39,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593032171] [2025-04-30 10:19:39,318 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-30 10:19:39,318 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2025-04-30 10:19:39,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:19:39,318 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2025-04-30 10:19:39,319 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=599, Invalid=1657, Unknown=0, NotChecked=0, Total=2256 [2025-04-30 10:19:39,344 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2025-04-30 10:19:39,345 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 944 transitions, 20841 flow. Second operand has 48 states, 48 states have (on average 18.458333333333332) internal successors, (886), 48 states have internal predecessors, (886), 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) [2025-04-30 10:19:39,345 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-30 10:19:39,345 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2025-04-30 10:19:39,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-30 10:19:52,957 INFO L116 PetriNetUnfolderBase]: 15134/39291 cut-off events. [2025-04-30 10:19:52,957 INFO L117 PetriNetUnfolderBase]: For 832758/832758 co-relation queries the response was YES. [2025-04-30 10:19:53,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 222663 conditions, 39291 events. 15134/39291 cut-off events. For 832758/832758 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 302453 event pairs, 402 based on Foata normal form. 1787/41078 useless extension candidates. Maximal degree in co-relation 222565. Up to 5491 conditions per place. [2025-04-30 10:19:53,536 INFO L140 encePairwiseOnDemand]: 34/38 looper letters, 4212 selfloop transitions, 1530 changer transitions 805/6557 dead transitions. [2025-04-30 10:19:53,536 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 6557 transitions, 142179 flow [2025-04-30 10:19:53,538 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2025-04-30 10:19:53,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2025-04-30 10:19:53,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 1226 transitions. [2025-04-30 10:19:53,540 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.7013729977116705 [2025-04-30 10:19:53,540 INFO L175 Difference]: Start difference. First operand has 317 places, 944 transitions, 20841 flow. Second operand 46 states and 1226 transitions. [2025-04-30 10:19:53,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 6557 transitions, 142179 flow [2025-04-30 10:19:56,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 6557 transitions, 141000 flow, removed 571 selfloop flow, removed 11 redundant places. [2025-04-30 10:19:56,651 INFO L231 Difference]: Finished difference. Result has 375 places, 1896 transitions, 48728 flow [2025-04-30 10:19:56,652 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=20740, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=944, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=650, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=48728, PETRI_PLACES=375, PETRI_TRANSITIONS=1896} [2025-04-30 10:19:56,652 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 339 predicate places. [2025-04-30 10:19:56,652 INFO L485 AbstractCegarLoop]: Abstraction has has 375 places, 1896 transitions, 48728 flow [2025-04-30 10:19:56,652 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 18.458333333333332) internal successors, (886), 48 states have internal predecessors, (886), 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) [2025-04-30 10:19:56,652 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-30 10:19:56,653 INFO L206 CegarLoopForPetriNet]: trace histogram [23, 23, 23, 23, 23, 23, 22, 16, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-30 10:19:56,658 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-04-30 10:19:56,853 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-04-30 10:19:56,853 INFO L403 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2025-04-30 10:19:56,854 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:19:56,854 INFO L85 PathProgramCache]: Analyzing trace with hash 1010396378, now seen corresponding path program 4 times [2025-04-30 10:19:56,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:19:56,854 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612410438] [2025-04-30 10:19:56,854 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-30 10:19:56,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:19:56,870 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 210 statements into 2 equivalence classes. [2025-04-30 10:19:56,892 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 210 of 210 statements. [2025-04-30 10:19:56,892 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-30 10:19:56,892 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:19:58,028 INFO L134 CoverageAnalysis]: Checked inductivity of 1922 backedges. 0 proven. 1922 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-30 10:19:58,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:19:58,028 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612410438] [2025-04-30 10:19:58,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612410438] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-30 10:19:58,028 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1896887487] [2025-04-30 10:19:58,028 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-30 10:19:58,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-30 10:19:58,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-30 10:19:58,030 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-30 10:19:58,032 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-04-30 10:19:58,112 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 210 statements into 2 equivalence classes. [2025-04-30 10:19:58,209 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 210 of 210 statements. [2025-04-30 10:19:58,209 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-30 10:19:58,209 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:19:58,212 INFO L256 TraceCheckSpWp]: Trace formula consists of 766 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-04-30 10:19:58,214 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-30 10:19:58,581 INFO L134 CoverageAnalysis]: Checked inductivity of 1922 backedges. 836 proven. 186 refuted. 0 times theorem prover too weak. 900 trivial. 0 not checked. [2025-04-30 10:19:58,581 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-30 10:19:58,999 INFO L134 CoverageAnalysis]: Checked inductivity of 1922 backedges. 836 proven. 186 refuted. 0 times theorem prover too weak. 900 trivial. 0 not checked. [2025-04-30 10:19:58,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1896887487] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-30 10:19:58,999 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-30 10:19:58,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 15, 15] total 76 [2025-04-30 10:19:58,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688168116] [2025-04-30 10:19:59,000 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-30 10:19:59,000 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2025-04-30 10:19:59,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:19:59,001 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2025-04-30 10:19:59,002 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=813, Invalid=4887, Unknown=0, NotChecked=0, Total=5700 [2025-04-30 10:19:59,094 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2025-04-30 10:19:59,095 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 1896 transitions, 48728 flow. Second operand has 76 states, 76 states have (on average 12.56578947368421) internal successors, (955), 76 states have internal predecessors, (955), 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) [2025-04-30 10:19:59,095 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-30 10:19:59,095 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2025-04-30 10:19:59,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Killed by 15