./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_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_68-pfscan_protected_loop_minimal_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 6aeaf730cbe4eb831d189bfd9925d1660c7714b9e685f389bc2495c0943d6472 --- Real Ultimate output --- This is Ultimate 0.3.0-wip.fs.system-includes-da04345-m [2025-04-30 10:19:11,755 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-30 10:19:11,812 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-04-30 10:19:11,816 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-30 10:19:11,816 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-30 10:19:11,832 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-30 10:19:11,834 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-30 10:19:11,834 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-30 10:19:11,834 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-30 10:19:11,834 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-30 10:19:11,834 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-30 10:19:11,835 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-30 10:19:11,835 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-30 10:19:11,835 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-30 10:19:11,835 INFO L153 SettingsManager]: * Use SBE=true [2025-04-30 10:19:11,835 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-30 10:19:11,836 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-30 10:19:11,836 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-30 10:19:11,836 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-30 10:19:11,836 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-30 10:19:11,836 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-30 10:19:11,836 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-30 10:19:11,836 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-30 10:19:11,837 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-30 10:19:11,837 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-04-30 10:19:11,837 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-04-30 10:19:11,837 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-30 10:19:11,837 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-30 10:19:11,837 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-30 10:19:11,837 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-30 10:19:11,837 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-30 10:19:11,837 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-30 10:19:11,837 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-30 10:19:11,837 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-30 10:19:11,837 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-30 10:19:11,838 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-30 10:19:11,838 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-30 10:19:11,838 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-30 10:19:11,838 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-30 10:19:11,838 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-30 10:19:11,838 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-30 10:19:11,838 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-30 10:19:11,838 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-30 10:19:11,839 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-30 10:19:11,839 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-30 10:19:11,839 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-30 10:19:11,839 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-30 10:19:11,839 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-30 10:19:11,839 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-30 10:19:11,839 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 -> 6aeaf730cbe4eb831d189bfd9925d1660c7714b9e685f389bc2495c0943d6472 [2025-04-30 10:19:12,095 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-30 10:19:12,103 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-30 10:19:12,104 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-30 10:19:12,105 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-30 10:19:12,105 INFO L274 PluginConnector]: CDTParser initialized [2025-04-30 10:19:12,107 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i [2025-04-30 10:19:13,336 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e6d4eb23/c3206a701f5f440696784ba25b40da19/FLAGcdb166386 [2025-04-30 10:19:13,606 INFO L389 CDTParser]: Found 1 translation units. [2025-04-30 10:19:13,606 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i [2025-04-30 10:19:13,622 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e6d4eb23/c3206a701f5f440696784ba25b40da19/FLAGcdb166386 [2025-04-30 10:19:14,388 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e6d4eb23/c3206a701f5f440696784ba25b40da19 [2025-04-30 10:19:14,389 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-30 10:19:14,390 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-04-30 10:19:14,391 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-30 10:19:14,391 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-30 10:19:14,394 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-30 10:19:14,395 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.04 10:19:14" (1/1) ... [2025-04-30 10:19:14,396 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48a0210b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:19:14, skipping insertion in model container [2025-04-30 10:19:14,397 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.04 10:19:14" (1/1) ... [2025-04-30 10:19:14,426 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-30 10:19:14,739 INFO L211 PostProcessor]: Analyzing one entry point: main [2025-04-30 10:19:14,751 INFO L200 MainTranslator]: Completed pre-run [2025-04-30 10:19:14,803 INFO L211 PostProcessor]: Analyzing one entry point: main [2025-04-30 10:19:14,823 INFO L204 MainTranslator]: Completed translation [2025-04-30 10:19:14,823 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:19:14 WrapperNode [2025-04-30 10:19:14,824 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-30 10:19:14,824 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-30 10:19:14,824 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-30 10:19:14,824 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-30 10:19:14,828 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:19:14" (1/1) ... [2025-04-30 10:19:14,838 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:19:14" (1/1) ... [2025-04-30 10:19:14,859 INFO L138 Inliner]: procedures = 165, calls = 35, calls flagged for inlining = 8, calls inlined = 9, statements flattened = 122 [2025-04-30 10:19:14,859 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-30 10:19:14,860 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-30 10:19:14,862 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-30 10:19:14,862 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-30 10:19:14,868 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:19:14" (1/1) ... [2025-04-30 10:19:14,869 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:19:14" (1/1) ... [2025-04-30 10:19:14,872 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:19:14" (1/1) ... [2025-04-30 10:19:14,885 INFO L175 MemorySlicer]: Split 18 memory accesses to 2 slices as follows [2, 16]. 89 percent of accesses are in the largest equivalence class. The 8 initializations are split as follows [2, 6]. The 3 writes are split as follows [0, 3]. [2025-04-30 10:19:14,886 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:19:14" (1/1) ... [2025-04-30 10:19:14,886 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:19:14" (1/1) ... [2025-04-30 10:19:14,890 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:19:14" (1/1) ... [2025-04-30 10:19:14,891 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:19:14" (1/1) ... [2025-04-30 10:19:14,897 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:19:14" (1/1) ... [2025-04-30 10:19:14,898 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:19:14" (1/1) ... [2025-04-30 10:19:14,898 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:19:14" (1/1) ... [2025-04-30 10:19:14,902 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-30 10:19:14,904 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-30 10:19:14,904 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-30 10:19:14,904 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-30 10:19:14,905 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:19:14" (1/1) ... [2025-04-30 10:19:14,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-30 10:19:14,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-30 10:19:14,927 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 10:19:14,929 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 10:19:14,946 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-04-30 10:19:14,946 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-04-30 10:19:14,946 INFO L130 BoogieDeclarations]: Found specification of procedure worker [2025-04-30 10:19:14,946 INFO L138 BoogieDeclarations]: Found implementation of procedure worker [2025-04-30 10:19:14,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-04-30 10:19:14,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-04-30 10:19:14,947 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-04-30 10:19:14,947 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-30 10:19:14,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-04-30 10:19:14,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-04-30 10:19:14,947 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-04-30 10:19:14,947 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-30 10:19:14,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-30 10:19:14,948 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 10:19:15,051 INFO L234 CfgBuilder]: Building ICFG [2025-04-30 10:19:15,052 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-30 10:19:15,193 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-30 10:19:15,193 INFO L283 CfgBuilder]: Performing block encoding [2025-04-30 10:19:15,330 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-30 10:19:15,330 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2025-04-30 10:19:15,330 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.04 10:19:15 BoogieIcfgContainer [2025-04-30 10:19:15,330 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-30 10:19:15,332 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-30 10:19:15,333 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-30 10:19:15,337 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-30 10:19:15,337 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.04 10:19:14" (1/3) ... [2025-04-30 10:19:15,338 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76ab4144 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.04 10:19:15, skipping insertion in model container [2025-04-30 10:19:15,338 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:19:14" (2/3) ... [2025-04-30 10:19:15,338 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76ab4144 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.04 10:19:15, skipping insertion in model container [2025-04-30 10:19:15,338 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.04 10:19:15" (3/3) ... [2025-04-30 10:19:15,339 INFO L128 eAbstractionObserver]: Analyzing ICFG 13-privatized_68-pfscan_protected_loop_minimal_interval_true.i [2025-04-30 10:19:15,351 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-30 10:19:15,352 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 13-privatized_68-pfscan_protected_loop_minimal_interval_true.i that has 2 procedures, 36 locations, 40 edges, 1 initial locations, 3 loop locations, and 6 error locations. [2025-04-30 10:19:15,352 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-30 10:19:15,397 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-04-30 10:19:15,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 41 transitions, 86 flow [2025-04-30 10:19:15,453 INFO L116 PetriNetUnfolderBase]: 6/40 cut-off events. [2025-04-30 10:19:15,455 INFO L117 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-04-30 10:19:15,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44 conditions, 40 events. 6/40 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 78 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 38. Up to 2 conditions per place. [2025-04-30 10:19:15,459 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 41 transitions, 86 flow [2025-04-30 10:19:15,462 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 38 places, 40 transitions, 83 flow [2025-04-30 10:19:15,468 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-30 10:19:15,478 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;@4180798a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-30 10:19:15,478 INFO L341 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2025-04-30 10:19:15,484 INFO L177 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-04-30 10:19:15,484 INFO L116 PetriNetUnfolderBase]: 2/19 cut-off events. [2025-04-30 10:19:15,484 INFO L117 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-04-30 10:19:15,484 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-30 10:19:15,485 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-04-30 10:19:15,485 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 10:19:15,489 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:19:15,489 INFO L85 PathProgramCache]: Analyzing trace with hash -1479977314, now seen corresponding path program 1 times [2025-04-30 10:19:15,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:19:15,496 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565002162] [2025-04-30 10:19:15,496 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:19:15,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:19:15,559 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-04-30 10:19:15,584 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-04-30 10:19:15,584 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:19:15,584 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:19:15,863 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 10:19:15,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:19:15,865 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565002162] [2025-04-30 10:19:15,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565002162] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:19:15,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:19:15,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-30 10:19:15,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525300747] [2025-04-30 10:19:15,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:19:15,872 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-30 10:19:15,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:19:15,889 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-30 10:19:15,889 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-04-30 10:19:15,914 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 41 [2025-04-30 10:19:15,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 40 transitions, 83 flow. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 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 10:19:15,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-30 10:19:15,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 41 [2025-04-30 10:19:15,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-30 10:19:16,189 INFO L116 PetriNetUnfolderBase]: 363/738 cut-off events. [2025-04-30 10:19:16,189 INFO L117 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-04-30 10:19:16,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1376 conditions, 738 events. 363/738 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 3627 event pairs, 35 based on Foata normal form. 64/657 useless extension candidates. Maximal degree in co-relation 1367. Up to 352 conditions per place. [2025-04-30 10:19:16,197 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 72 selfloop transitions, 9 changer transitions 0/93 dead transitions. [2025-04-30 10:19:16,198 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 93 transitions, 351 flow [2025-04-30 10:19:16,199 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-30 10:19:16,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-04-30 10:19:16,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 173 transitions. [2025-04-30 10:19:16,208 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.7032520325203252 [2025-04-30 10:19:16,209 INFO L175 Difference]: Start difference. First operand has 38 places, 40 transitions, 83 flow. Second operand 6 states and 173 transitions. [2025-04-30 10:19:16,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 93 transitions, 351 flow [2025-04-30 10:19:16,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 93 transitions, 350 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-04-30 10:19:16,217 INFO L231 Difference]: Finished difference. Result has 45 places, 47 transitions, 148 flow [2025-04-30 10:19:16,218 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=148, PETRI_PLACES=45, PETRI_TRANSITIONS=47} [2025-04-30 10:19:16,222 INFO L279 CegarLoopForPetriNet]: 38 programPoint places, 7 predicate places. [2025-04-30 10:19:16,222 INFO L485 AbstractCegarLoop]: Abstraction has has 45 places, 47 transitions, 148 flow [2025-04-30 10:19:16,222 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 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 10:19:16,222 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-30 10:19:16,222 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-30 10:19:16,223 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-30 10:19:16,223 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 10:19:16,223 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:19:16,223 INFO L85 PathProgramCache]: Analyzing trace with hash -624013020, now seen corresponding path program 1 times [2025-04-30 10:19:16,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:19:16,224 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788152035] [2025-04-30 10:19:16,224 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:19:16,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:19:16,234 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-04-30 10:19:16,241 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-04-30 10:19:16,241 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:19:16,241 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:19:16,386 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 10:19:16,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:19:16,387 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788152035] [2025-04-30 10:19:16,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788152035] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:19:16,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:19:16,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-30 10:19:16,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006327752] [2025-04-30 10:19:16,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:19:16,387 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-30 10:19:16,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:19:16,388 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-30 10:19:16,388 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-04-30 10:19:16,392 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2025-04-30 10:19:16,392 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 47 transitions, 148 flow. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:19:16,392 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-30 10:19:16,392 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2025-04-30 10:19:16,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-30 10:19:16,566 INFO L116 PetriNetUnfolderBase]: 298/648 cut-off events. [2025-04-30 10:19:16,566 INFO L117 PetriNetUnfolderBase]: For 135/139 co-relation queries the response was YES. [2025-04-30 10:19:16,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1400 conditions, 648 events. 298/648 cut-off events. For 135/139 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 3165 event pairs, 26 based on Foata normal form. 22/592 useless extension candidates. Maximal degree in co-relation 1386. Up to 378 conditions per place. [2025-04-30 10:19:16,572 INFO L140 encePairwiseOnDemand]: 34/41 looper letters, 66 selfloop transitions, 10 changer transitions 0/90 dead transitions. [2025-04-30 10:19:16,572 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 90 transitions, 389 flow [2025-04-30 10:19:16,572 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-30 10:19:16,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-04-30 10:19:16,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 165 transitions. [2025-04-30 10:19:16,573 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.6707317073170732 [2025-04-30 10:19:16,573 INFO L175 Difference]: Start difference. First operand has 45 places, 47 transitions, 148 flow. Second operand 6 states and 165 transitions. [2025-04-30 10:19:16,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 90 transitions, 389 flow [2025-04-30 10:19:16,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 90 transitions, 389 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-04-30 10:19:16,576 INFO L231 Difference]: Finished difference. Result has 53 places, 49 transitions, 192 flow [2025-04-30 10:19:16,576 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=192, PETRI_PLACES=53, PETRI_TRANSITIONS=49} [2025-04-30 10:19:16,576 INFO L279 CegarLoopForPetriNet]: 38 programPoint places, 15 predicate places. [2025-04-30 10:19:16,576 INFO L485 AbstractCegarLoop]: Abstraction has has 53 places, 49 transitions, 192 flow [2025-04-30 10:19:16,577 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:19:16,577 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-30 10:19:16,577 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-30 10:19:16,577 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-04-30 10:19:16,577 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 10:19:16,577 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:19:16,577 INFO L85 PathProgramCache]: Analyzing trace with hash 1413723549, now seen corresponding path program 1 times [2025-04-30 10:19:16,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:19:16,577 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483200155] [2025-04-30 10:19:16,577 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:19:16,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:19:16,584 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-04-30 10:19:16,591 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-04-30 10:19:16,591 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:19:16,591 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:19:16,653 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 10:19:16,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:19:16,653 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483200155] [2025-04-30 10:19:16,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483200155] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:19:16,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:19:16,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-30 10:19:16,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958554084] [2025-04-30 10:19:16,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:19:16,653 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-30 10:19:16,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:19:16,654 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-30 10:19:16,654 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-04-30 10:19:16,660 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 41 [2025-04-30 10:19:16,660 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 49 transitions, 192 flow. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 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 10:19:16,660 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-30 10:19:16,660 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 41 [2025-04-30 10:19:16,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-30 10:19:16,882 INFO L116 PetriNetUnfolderBase]: 466/987 cut-off events. [2025-04-30 10:19:16,882 INFO L117 PetriNetUnfolderBase]: For 573/588 co-relation queries the response was YES. [2025-04-30 10:19:16,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2382 conditions, 987 events. 466/987 cut-off events. For 573/588 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 5259 event pairs, 94 based on Foata normal form. 32/940 useless extension candidates. Maximal degree in co-relation 2363. Up to 490 conditions per place. [2025-04-30 10:19:16,886 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 93 selfloop transitions, 20 changer transitions 0/124 dead transitions. [2025-04-30 10:19:16,886 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 124 transitions, 745 flow [2025-04-30 10:19:16,886 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-30 10:19:16,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-04-30 10:19:16,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 155 transitions. [2025-04-30 10:19:16,887 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.6300813008130082 [2025-04-30 10:19:16,887 INFO L175 Difference]: Start difference. First operand has 53 places, 49 transitions, 192 flow. Second operand 6 states and 155 transitions. [2025-04-30 10:19:16,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 124 transitions, 745 flow [2025-04-30 10:19:16,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 124 transitions, 719 flow, removed 4 selfloop flow, removed 2 redundant places. [2025-04-30 10:19:16,891 INFO L231 Difference]: Finished difference. Result has 61 places, 65 transitions, 351 flow [2025-04-30 10:19:16,891 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=351, PETRI_PLACES=61, PETRI_TRANSITIONS=65} [2025-04-30 10:19:16,891 INFO L279 CegarLoopForPetriNet]: 38 programPoint places, 23 predicate places. [2025-04-30 10:19:16,892 INFO L485 AbstractCegarLoop]: Abstraction has has 61 places, 65 transitions, 351 flow [2025-04-30 10:19:16,892 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 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 10:19:16,892 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-30 10:19:16,892 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-30 10:19:16,892 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-04-30 10:19:16,892 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2025-04-30 10:19:16,892 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:19:16,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1620705516, now seen corresponding path program 1 times [2025-04-30 10:19:16,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:19:16,892 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633892989] [2025-04-30 10:19:16,893 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:19:16,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:19:16,899 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-04-30 10:19:16,901 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-04-30 10:19:16,901 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:19:16,902 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:19:16,943 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 10:19:16,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:19:16,943 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633892989] [2025-04-30 10:19:16,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633892989] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:19:16,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:19:16,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-30 10:19:16,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967581990] [2025-04-30 10:19:16,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:19:16,943 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-30 10:19:16,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:19:16,944 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-30 10:19:16,944 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-30 10:19:16,948 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 41 [2025-04-30 10:19:16,949 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 65 transitions, 351 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 10:19:16,949 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-30 10:19:16,949 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 41 [2025-04-30 10:19:16,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-30 10:19:17,126 INFO L116 PetriNetUnfolderBase]: 605/1279 cut-off events. [2025-04-30 10:19:17,126 INFO L117 PetriNetUnfolderBase]: For 1440/1515 co-relation queries the response was YES. [2025-04-30 10:19:17,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3661 conditions, 1279 events. 605/1279 cut-off events. For 1440/1515 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 7086 event pairs, 214 based on Foata normal form. 61/1290 useless extension candidates. Maximal degree in co-relation 3639. Up to 569 conditions per place. [2025-04-30 10:19:17,133 INFO L140 encePairwiseOnDemand]: 35/41 looper letters, 95 selfloop transitions, 5 changer transitions 0/113 dead transitions. [2025-04-30 10:19:17,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 113 transitions, 770 flow [2025-04-30 10:19:17,133 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-30 10:19:17,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-04-30 10:19:17,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 112 transitions. [2025-04-30 10:19:17,134 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.6829268292682927 [2025-04-30 10:19:17,134 INFO L175 Difference]: Start difference. First operand has 61 places, 65 transitions, 351 flow. Second operand 4 states and 112 transitions. [2025-04-30 10:19:17,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 113 transitions, 770 flow [2025-04-30 10:19:17,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 113 transitions, 770 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-04-30 10:19:17,143 INFO L231 Difference]: Finished difference. Result has 66 places, 68 transitions, 386 flow [2025-04-30 10:19:17,143 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=351, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=386, PETRI_PLACES=66, PETRI_TRANSITIONS=68} [2025-04-30 10:19:17,144 INFO L279 CegarLoopForPetriNet]: 38 programPoint places, 28 predicate places. [2025-04-30 10:19:17,144 INFO L485 AbstractCegarLoop]: Abstraction has has 66 places, 68 transitions, 386 flow [2025-04-30 10:19:17,144 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 10:19:17,144 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-30 10:19:17,144 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-30 10:19:17,144 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-04-30 10:19:17,144 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 10:19:17,144 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:19:17,145 INFO L85 PathProgramCache]: Analyzing trace with hash 875757478, now seen corresponding path program 1 times [2025-04-30 10:19:17,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:19:17,145 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069380494] [2025-04-30 10:19:17,145 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:19:17,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:19:17,152 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-04-30 10:19:17,156 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-04-30 10:19:17,156 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:19:17,156 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:19:17,216 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 10:19:17,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:19:17,217 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069380494] [2025-04-30 10:19:17,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069380494] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:19:17,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:19:17,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-30 10:19:17,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573898694] [2025-04-30 10:19:17,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:19:17,217 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-30 10:19:17,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:19:17,218 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-30 10:19:17,218 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-30 10:19:17,220 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2025-04-30 10:19:17,221 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 68 transitions, 386 flow. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:19:17,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-30 10:19:17,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2025-04-30 10:19:17,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-30 10:19:17,352 INFO L116 PetriNetUnfolderBase]: 358/838 cut-off events. [2025-04-30 10:19:17,353 INFO L117 PetriNetUnfolderBase]: For 970/1019 co-relation queries the response was YES. [2025-04-30 10:19:17,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2464 conditions, 838 events. 358/838 cut-off events. For 970/1019 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 4420 event pairs, 122 based on Foata normal form. 38/857 useless extension candidates. Maximal degree in co-relation 2439. Up to 491 conditions per place. [2025-04-30 10:19:17,358 INFO L140 encePairwiseOnDemand]: 36/41 looper letters, 59 selfloop transitions, 11 changer transitions 3/88 dead transitions. [2025-04-30 10:19:17,359 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 88 transitions, 605 flow [2025-04-30 10:19:17,359 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-30 10:19:17,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-04-30 10:19:17,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 130 transitions. [2025-04-30 10:19:17,360 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.6341463414634146 [2025-04-30 10:19:17,361 INFO L175 Difference]: Start difference. First operand has 66 places, 68 transitions, 386 flow. Second operand 5 states and 130 transitions. [2025-04-30 10:19:17,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 88 transitions, 605 flow [2025-04-30 10:19:17,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 88 transitions, 577 flow, removed 6 selfloop flow, removed 4 redundant places. [2025-04-30 10:19:17,365 INFO L231 Difference]: Finished difference. Result has 69 places, 65 transitions, 385 flow [2025-04-30 10:19:17,365 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=385, PETRI_PLACES=69, PETRI_TRANSITIONS=65} [2025-04-30 10:19:17,366 INFO L279 CegarLoopForPetriNet]: 38 programPoint places, 31 predicate places. [2025-04-30 10:19:17,366 INFO L485 AbstractCegarLoop]: Abstraction has has 69 places, 65 transitions, 385 flow [2025-04-30 10:19:17,366 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:19:17,366 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-30 10:19:17,366 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 10:19:17,366 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-04-30 10:19:17,366 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting workerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2025-04-30 10:19:17,367 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:19:17,367 INFO L85 PathProgramCache]: Analyzing trace with hash -194259701, now seen corresponding path program 1 times [2025-04-30 10:19:17,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:19:17,367 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362524894] [2025-04-30 10:19:17,367 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:19:17,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:19:17,373 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-04-30 10:19:17,376 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-04-30 10:19:17,378 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:19:17,378 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:19:17,479 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 10:19:17,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:19:17,480 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362524894] [2025-04-30 10:19:17,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362524894] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:19:17,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:19:17,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-30 10:19:17,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901377063] [2025-04-30 10:19:17,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:19:17,481 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-30 10:19:17,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:19:17,482 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-30 10:19:17,482 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-04-30 10:19:17,483 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 41 [2025-04-30 10:19:17,483 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 65 transitions, 385 flow. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:19:17,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-30 10:19:17,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 41 [2025-04-30 10:19:17,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-30 10:19:17,701 INFO L116 PetriNetUnfolderBase]: 343/807 cut-off events. [2025-04-30 10:19:17,702 INFO L117 PetriNetUnfolderBase]: For 1141/1162 co-relation queries the response was YES. [2025-04-30 10:19:17,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2459 conditions, 807 events. 343/807 cut-off events. For 1141/1162 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 4001 event pairs, 124 based on Foata normal form. 30/835 useless extension candidates. Maximal degree in co-relation 2431. Up to 477 conditions per place. [2025-04-30 10:19:17,708 INFO L140 encePairwiseOnDemand]: 35/41 looper letters, 81 selfloop transitions, 14 changer transitions 3/112 dead transitions. [2025-04-30 10:19:17,709 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 112 transitions, 782 flow [2025-04-30 10:19:17,709 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-04-30 10:19:17,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-04-30 10:19:17,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 194 transitions. [2025-04-30 10:19:17,710 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5914634146341463 [2025-04-30 10:19:17,710 INFO L175 Difference]: Start difference. First operand has 69 places, 65 transitions, 385 flow. Second operand 8 states and 194 transitions. [2025-04-30 10:19:17,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 112 transitions, 782 flow [2025-04-30 10:19:17,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 112 transitions, 768 flow, removed 2 selfloop flow, removed 2 redundant places. [2025-04-30 10:19:17,718 INFO L231 Difference]: Finished difference. Result has 77 places, 66 transitions, 416 flow [2025-04-30 10:19:17,718 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=343, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=416, PETRI_PLACES=77, PETRI_TRANSITIONS=66} [2025-04-30 10:19:17,718 INFO L279 CegarLoopForPetriNet]: 38 programPoint places, 39 predicate places. [2025-04-30 10:19:17,719 INFO L485 AbstractCegarLoop]: Abstraction has has 77 places, 66 transitions, 416 flow [2025-04-30 10:19:17,719 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:19:17,719 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-30 10:19:17,719 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-30 10:19:17,719 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-04-30 10:19:17,719 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2025-04-30 10:19:17,720 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:19:17,720 INFO L85 PathProgramCache]: Analyzing trace with hash 1977416860, now seen corresponding path program 1 times [2025-04-30 10:19:17,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:19:17,720 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446999236] [2025-04-30 10:19:17,720 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:19:17,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:19:17,727 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-04-30 10:19:17,732 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-04-30 10:19:17,732 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:19:17,732 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:19:17,988 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 10:19:17,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:19:17,988 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446999236] [2025-04-30 10:19:17,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446999236] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-30 10:19:17,988 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1411123568] [2025-04-30 10:19:17,988 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:19:17,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-30 10:19:17,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-30 10:19:17,994 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 10:19:17,996 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 10:19:18,048 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-04-30 10:19:18,065 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-04-30 10:19:18,065 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:19:18,065 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:19:18,071 INFO L256 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 28 conjuncts are in the unsatisfiable core [2025-04-30 10:19:18,074 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-30 10:19:18,103 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-04-30 10:19:18,250 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 3 [2025-04-30 10:19:18,313 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2025-04-30 10:19:18,315 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 10:19:18,316 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-30 10:19:18,521 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-30 10:19:18,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1411123568] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-30 10:19:18,521 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-30 10:19:18,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 19 [2025-04-30 10:19:18,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565495749] [2025-04-30 10:19:18,522 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-30 10:19:18,522 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-04-30 10:19:18,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:19:18,522 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-04-30 10:19:18,522 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=328, Unknown=0, NotChecked=0, Total=420 [2025-04-30 10:19:18,589 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 41 [2025-04-30 10:19:18,589 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 66 transitions, 416 flow. Second operand has 21 states, 21 states have (on average 14.380952380952381) internal successors, (302), 21 states have internal predecessors, (302), 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 10:19:18,590 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-30 10:19:18,590 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 41 [2025-04-30 10:19:18,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-30 10:19:19,588 INFO L116 PetriNetUnfolderBase]: 1350/2841 cut-off events. [2025-04-30 10:19:19,588 INFO L117 PetriNetUnfolderBase]: For 5879/6176 co-relation queries the response was YES. [2025-04-30 10:19:19,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9401 conditions, 2841 events. 1350/2841 cut-off events. For 5879/6176 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 16708 event pairs, 99 based on Foata normal form. 226/3051 useless extension candidates. Maximal degree in co-relation 9369. Up to 570 conditions per place. [2025-04-30 10:19:19,609 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 333 selfloop transitions, 81 changer transitions 0/428 dead transitions. [2025-04-30 10:19:19,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 428 transitions, 3473 flow [2025-04-30 10:19:19,609 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-04-30 10:19:19,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2025-04-30 10:19:19,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 521 transitions. [2025-04-30 10:19:19,611 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.6051103368176539 [2025-04-30 10:19:19,611 INFO L175 Difference]: Start difference. First operand has 77 places, 66 transitions, 416 flow. Second operand 21 states and 521 transitions. [2025-04-30 10:19:19,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 428 transitions, 3473 flow [2025-04-30 10:19:19,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 428 transitions, 3205 flow, removed 41 selfloop flow, removed 5 redundant places. [2025-04-30 10:19:19,634 INFO L231 Difference]: Finished difference. Result has 101 places, 152 transitions, 1341 flow [2025-04-30 10:19:19,634 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=377, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1341, PETRI_PLACES=101, PETRI_TRANSITIONS=152} [2025-04-30 10:19:19,635 INFO L279 CegarLoopForPetriNet]: 38 programPoint places, 63 predicate places. [2025-04-30 10:19:19,635 INFO L485 AbstractCegarLoop]: Abstraction has has 101 places, 152 transitions, 1341 flow [2025-04-30 10:19:19,636 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 14.380952380952381) internal successors, (302), 21 states have internal predecessors, (302), 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 10:19:19,637 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-30 10:19:19,637 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-30 10:19:19,644 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-04-30 10:19:19,838 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-30 10:19:19,839 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting workerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2025-04-30 10:19:19,839 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:19:19,840 INFO L85 PathProgramCache]: Analyzing trace with hash 756550964, now seen corresponding path program 1 times [2025-04-30 10:19:19,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:19:19,840 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953338357] [2025-04-30 10:19:19,840 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:19:19,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:19:19,849 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-04-30 10:19:19,855 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-04-30 10:19:19,855 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:19:19,855 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:19:20,060 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 10:19:20,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:19:20,060 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953338357] [2025-04-30 10:19:20,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953338357] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:19:20,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:19:20,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-04-30 10:19:20,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839824969] [2025-04-30 10:19:20,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:19:20,061 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-04-30 10:19:20,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:19:20,061 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-04-30 10:19:20,061 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2025-04-30 10:19:20,089 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 41 [2025-04-30 10:19:20,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 152 transitions, 1341 flow. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 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 10:19:20,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-30 10:19:20,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 41 [2025-04-30 10:19:20,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-30 10:19:20,697 INFO L116 PetriNetUnfolderBase]: 1658/3505 cut-off events. [2025-04-30 10:19:20,697 INFO L117 PetriNetUnfolderBase]: For 9433/9620 co-relation queries the response was YES. [2025-04-30 10:19:20,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12775 conditions, 3505 events. 1658/3505 cut-off events. For 9433/9620 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 21794 event pairs, 598 based on Foata normal form. 103/3588 useless extension candidates. Maximal degree in co-relation 12735. Up to 2246 conditions per place. [2025-04-30 10:19:20,727 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 224 selfloop transitions, 51 changer transitions 0/288 dead transitions. [2025-04-30 10:19:20,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 288 transitions, 2869 flow [2025-04-30 10:19:20,728 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-04-30 10:19:20,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-04-30 10:19:20,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 261 transitions. [2025-04-30 10:19:20,729 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.4896810506566604 [2025-04-30 10:19:20,729 INFO L175 Difference]: Start difference. First operand has 101 places, 152 transitions, 1341 flow. Second operand 13 states and 261 transitions. [2025-04-30 10:19:20,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 288 transitions, 2869 flow [2025-04-30 10:19:20,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 288 transitions, 2532 flow, removed 152 selfloop flow, removed 6 redundant places. [2025-04-30 10:19:20,767 INFO L231 Difference]: Finished difference. Result has 115 places, 187 transitions, 1695 flow [2025-04-30 10:19:20,768 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1164, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1695, PETRI_PLACES=115, PETRI_TRANSITIONS=187} [2025-04-30 10:19:20,768 INFO L279 CegarLoopForPetriNet]: 38 programPoint places, 77 predicate places. [2025-04-30 10:19:20,768 INFO L485 AbstractCegarLoop]: Abstraction has has 115 places, 187 transitions, 1695 flow [2025-04-30 10:19:20,769 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 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 10:19:20,769 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-30 10:19:20,769 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-30 10:19:20,769 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-04-30 10:19:20,769 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting workerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2025-04-30 10:19:20,769 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:19:20,769 INFO L85 PathProgramCache]: Analyzing trace with hash -2027658056, now seen corresponding path program 2 times [2025-04-30 10:19:20,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:19:20,769 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865059333] [2025-04-30 10:19:20,769 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-30 10:19:20,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:19:20,777 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 1 equivalence classes. [2025-04-30 10:19:20,781 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-04-30 10:19:20,781 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-04-30 10:19:20,781 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:19:20,940 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 10:19:20,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:19:20,940 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865059333] [2025-04-30 10:19:20,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865059333] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:19:20,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:19:20,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-04-30 10:19:20,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477882349] [2025-04-30 10:19:20,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:19:20,941 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-04-30 10:19:20,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:19:20,941 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-04-30 10:19:20,941 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2025-04-30 10:19:20,978 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 41 [2025-04-30 10:19:20,978 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 187 transitions, 1695 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:19:20,978 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-30 10:19:20,978 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 41 [2025-04-30 10:19:20,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-30 10:19:21,716 INFO L116 PetriNetUnfolderBase]: 2210/4711 cut-off events. [2025-04-30 10:19:21,716 INFO L117 PetriNetUnfolderBase]: For 16883/17241 co-relation queries the response was YES. [2025-04-30 10:19:21,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17228 conditions, 4711 events. 2210/4711 cut-off events. For 16883/17241 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 31191 event pairs, 366 based on Foata normal form. 270/4955 useless extension candidates. Maximal degree in co-relation 17182. Up to 2291 conditions per place. [2025-04-30 10:19:21,746 INFO L140 encePairwiseOnDemand]: 27/41 looper letters, 265 selfloop transitions, 142 changer transitions 1/421 dead transitions. [2025-04-30 10:19:21,746 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 421 transitions, 4089 flow [2025-04-30 10:19:21,746 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-04-30 10:19:21,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2025-04-30 10:19:21,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 353 transitions. [2025-04-30 10:19:21,747 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.47831978319783197 [2025-04-30 10:19:21,747 INFO L175 Difference]: Start difference. First operand has 115 places, 187 transitions, 1695 flow. Second operand 18 states and 353 transitions. [2025-04-30 10:19:21,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 421 transitions, 4089 flow [2025-04-30 10:19:21,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 421 transitions, 4084 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-04-30 10:19:21,789 INFO L231 Difference]: Finished difference. Result has 142 places, 287 transitions, 3190 flow [2025-04-30 10:19:21,789 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1692, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=3190, PETRI_PLACES=142, PETRI_TRANSITIONS=287} [2025-04-30 10:19:21,790 INFO L279 CegarLoopForPetriNet]: 38 programPoint places, 104 predicate places. [2025-04-30 10:19:21,790 INFO L485 AbstractCegarLoop]: Abstraction has has 142 places, 287 transitions, 3190 flow [2025-04-30 10:19:21,790 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:19:21,790 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-30 10:19:21,790 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-30 10:19:21,790 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-04-30 10:19:21,791 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting workerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2025-04-30 10:19:21,791 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:19:21,791 INFO L85 PathProgramCache]: Analyzing trace with hash 150990328, now seen corresponding path program 3 times [2025-04-30 10:19:21,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:19:21,791 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686386168] [2025-04-30 10:19:21,791 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-30 10:19:21,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:19:21,797 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 1 equivalence classes. [2025-04-30 10:19:21,800 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-04-30 10:19:21,800 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-04-30 10:19:21,800 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:19:21,911 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 10:19:21,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:19:21,911 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686386168] [2025-04-30 10:19:21,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686386168] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:19:21,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:19:21,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-04-30 10:19:21,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592114221] [2025-04-30 10:19:21,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:19:21,912 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-04-30 10:19:21,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:19:21,912 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-04-30 10:19:21,912 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2025-04-30 10:19:21,936 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 41 [2025-04-30 10:19:21,936 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 287 transitions, 3190 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:19:21,936 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-30 10:19:21,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 41 [2025-04-30 10:19:21,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-30 10:19:22,971 INFO L116 PetriNetUnfolderBase]: 2857/6101 cut-off events. [2025-04-30 10:19:22,972 INFO L117 PetriNetUnfolderBase]: For 38769/39261 co-relation queries the response was YES. [2025-04-30 10:19:22,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25714 conditions, 6101 events. 2857/6101 cut-off events. For 38769/39261 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 43009 event pairs, 661 based on Foata normal form. 359/6440 useless extension candidates. Maximal degree in co-relation 25656. Up to 2940 conditions per place. [2025-04-30 10:19:23,018 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 345 selfloop transitions, 176 changer transitions 2/536 dead transitions. [2025-04-30 10:19:23,018 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 536 transitions, 6503 flow [2025-04-30 10:19:23,019 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-04-30 10:19:23,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2025-04-30 10:19:23,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 319 transitions. [2025-04-30 10:19:23,020 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.48628048780487804 [2025-04-30 10:19:23,020 INFO L175 Difference]: Start difference. First operand has 142 places, 287 transitions, 3190 flow. Second operand 16 states and 319 transitions. [2025-04-30 10:19:23,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 536 transitions, 6503 flow [2025-04-30 10:19:23,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 536 transitions, 6408 flow, removed 41 selfloop flow, removed 2 redundant places. [2025-04-30 10:19:23,124 INFO L231 Difference]: Finished difference. Result has 163 places, 386 transitions, 5207 flow [2025-04-30 10:19:23,125 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3123, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=5207, PETRI_PLACES=163, PETRI_TRANSITIONS=386} [2025-04-30 10:19:23,125 INFO L279 CegarLoopForPetriNet]: 38 programPoint places, 125 predicate places. [2025-04-30 10:19:23,125 INFO L485 AbstractCegarLoop]: Abstraction has has 163 places, 386 transitions, 5207 flow [2025-04-30 10:19:23,125 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:19:23,125 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-30 10:19:23,125 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-30 10:19:23,125 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-04-30 10:19:23,125 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2025-04-30 10:19:23,126 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:19:23,126 INFO L85 PathProgramCache]: Analyzing trace with hash 1170380910, now seen corresponding path program 1 times [2025-04-30 10:19:23,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:19:23,126 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670203715] [2025-04-30 10:19:23,126 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:19:23,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:19:23,131 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-04-30 10:19:23,134 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-04-30 10:19:23,134 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:19:23,134 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:19:23,159 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-30 10:19:23,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:19:23,159 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670203715] [2025-04-30 10:19:23,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670203715] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:19:23,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:19:23,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-30 10:19:23,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794095989] [2025-04-30 10:19:23,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:19:23,160 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-30 10:19:23,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:19:23,160 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-30 10:19:23,160 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-30 10:19:23,167 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 41 [2025-04-30 10:19:23,167 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 386 transitions, 5207 flow. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 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 10:19:23,167 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-30 10:19:23,167 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 41 [2025-04-30 10:19:23,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-30 10:19:23,958 INFO L116 PetriNetUnfolderBase]: 2723/5889 cut-off events. [2025-04-30 10:19:23,958 INFO L117 PetriNetUnfolderBase]: For 43183/43734 co-relation queries the response was YES. [2025-04-30 10:19:23,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26283 conditions, 5889 events. 2723/5889 cut-off events. For 43183/43734 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 41437 event pairs, 655 based on Foata normal form. 521/6338 useless extension candidates. Maximal degree in co-relation 26217. Up to 2847 conditions per place. [2025-04-30 10:19:23,994 INFO L140 encePairwiseOnDemand]: 34/41 looper letters, 402 selfloop transitions, 92 changer transitions 0/510 dead transitions. [2025-04-30 10:19:23,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 510 transitions, 7705 flow [2025-04-30 10:19:23,994 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-30 10:19:23,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-04-30 10:19:23,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 107 transitions. [2025-04-30 10:19:23,995 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.6524390243902439 [2025-04-30 10:19:23,995 INFO L175 Difference]: Start difference. First operand has 163 places, 386 transitions, 5207 flow. Second operand 4 states and 107 transitions. [2025-04-30 10:19:23,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 510 transitions, 7705 flow [2025-04-30 10:19:24,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 510 transitions, 7467 flow, removed 93 selfloop flow, removed 7 redundant places. [2025-04-30 10:19:24,111 INFO L231 Difference]: Finished difference. Result has 161 places, 394 transitions, 5484 flow [2025-04-30 10:19:24,112 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4891, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=5484, PETRI_PLACES=161, PETRI_TRANSITIONS=394} [2025-04-30 10:19:24,113 INFO L279 CegarLoopForPetriNet]: 38 programPoint places, 123 predicate places. [2025-04-30 10:19:24,113 INFO L485 AbstractCegarLoop]: Abstraction has has 161 places, 394 transitions, 5484 flow [2025-04-30 10:19:24,114 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 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 10:19:24,114 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-30 10:19:24,114 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-30 10:19:24,114 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-04-30 10:19:24,114 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2025-04-30 10:19:24,114 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:19:24,115 INFO L85 PathProgramCache]: Analyzing trace with hash 1922068386, now seen corresponding path program 1 times [2025-04-30 10:19:24,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:19:24,115 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623452856] [2025-04-30 10:19:24,115 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:19:24,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:19:24,121 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-04-30 10:19:24,124 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-04-30 10:19:24,124 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:19:24,124 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:19:24,310 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-30 10:19:24,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:19:24,310 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623452856] [2025-04-30 10:19:24,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623452856] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-30 10:19:24,310 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [640331145] [2025-04-30 10:19:24,310 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:19:24,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-30 10:19:24,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-30 10:19:24,331 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 10:19:24,332 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 10:19:24,384 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-04-30 10:19:24,400 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-04-30 10:19:24,400 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:19:24,401 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:19:24,402 INFO L256 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-04-30 10:19:24,403 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-30 10:19:24,453 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-30 10:19:24,453 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-04-30 10:19:24,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [640331145] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:19:24,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-04-30 10:19:24,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 13 [2025-04-30 10:19:24,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237770659] [2025-04-30 10:19:24,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:19:24,454 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-04-30 10:19:24,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:19:24,454 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-04-30 10:19:24,454 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2025-04-30 10:19:24,459 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 41 [2025-04-30 10:19:24,460 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 394 transitions, 5484 flow. Second operand has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:19:24,460 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-30 10:19:24,460 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 41 [2025-04-30 10:19:24,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-30 10:19:25,429 INFO L116 PetriNetUnfolderBase]: 2790/5890 cut-off events. [2025-04-30 10:19:25,429 INFO L117 PetriNetUnfolderBase]: For 45639/46239 co-relation queries the response was YES. [2025-04-30 10:19:25,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27915 conditions, 5890 events. 2790/5890 cut-off events. For 45639/46239 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 40819 event pairs, 609 based on Foata normal form. 505/6231 useless extension candidates. Maximal degree in co-relation 27849. Up to 3442 conditions per place. [2025-04-30 10:19:25,476 INFO L140 encePairwiseOnDemand]: 36/41 looper letters, 442 selfloop transitions, 69 changer transitions 25/553 dead transitions. [2025-04-30 10:19:25,476 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 553 transitions, 8402 flow [2025-04-30 10:19:25,476 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-30 10:19:25,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-04-30 10:19:25,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 156 transitions. [2025-04-30 10:19:25,477 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.6341463414634146 [2025-04-30 10:19:25,477 INFO L175 Difference]: Start difference. First operand has 161 places, 394 transitions, 5484 flow. Second operand 6 states and 156 transitions. [2025-04-30 10:19:25,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 553 transitions, 8402 flow [2025-04-30 10:19:25,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 553 transitions, 8384 flow, removed 9 selfloop flow, removed 0 redundant places. [2025-04-30 10:19:25,620 INFO L231 Difference]: Finished difference. Result has 165 places, 393 transitions, 5600 flow [2025-04-30 10:19:25,620 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5462, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=393, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5600, PETRI_PLACES=165, PETRI_TRANSITIONS=393} [2025-04-30 10:19:25,620 INFO L279 CegarLoopForPetriNet]: 38 programPoint places, 127 predicate places. [2025-04-30 10:19:25,620 INFO L485 AbstractCegarLoop]: Abstraction has has 165 places, 393 transitions, 5600 flow [2025-04-30 10:19:25,621 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:19:25,621 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-30 10:19:25,621 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-30 10:19:25,627 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 10:19:25,821 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,SelfDestructingSolverStorable11 [2025-04-30 10:19:25,821 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 10:19:25,822 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:19:25,822 INFO L85 PathProgramCache]: Analyzing trace with hash -545421789, now seen corresponding path program 1 times [2025-04-30 10:19:25,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:19:25,822 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888927244] [2025-04-30 10:19:25,822 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:19:25,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:19:25,830 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-04-30 10:19:25,833 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-04-30 10:19:25,835 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:19:25,836 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:19:25,880 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 10:19:25,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:19:25,880 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888927244] [2025-04-30 10:19:25,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888927244] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-30 10:19:25,881 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [464106790] [2025-04-30 10:19:25,881 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:19:25,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-30 10:19:25,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-30 10:19:25,883 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 10:19:25,884 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 10:19:25,931 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-04-30 10:19:25,946 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-04-30 10:19:25,946 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:19:25,946 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:19:25,947 INFO L256 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-04-30 10:19:25,948 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-30 10:19:25,980 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 10:19:25,981 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-30 10:19:26,025 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 10:19:26,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [464106790] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-30 10:19:26,026 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-30 10:19:26,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2025-04-30 10:19:26,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794149109] [2025-04-30 10:19:26,027 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-30 10:19:26,027 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-04-30 10:19:26,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:19:26,028 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-04-30 10:19:26,029 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-04-30 10:19:26,041 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 41 [2025-04-30 10:19:26,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 393 transitions, 5600 flow. Second operand has 12 states, 12 states have (on average 16.583333333333332) internal successors, (199), 12 states have internal predecessors, (199), 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 10:19:26,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-30 10:19:26,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 41 [2025-04-30 10:19:26,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-30 10:19:28,622 INFO L116 PetriNetUnfolderBase]: 8773/18078 cut-off events. [2025-04-30 10:19:28,622 INFO L117 PetriNetUnfolderBase]: For 140273/142258 co-relation queries the response was YES. [2025-04-30 10:19:28,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86881 conditions, 18078 events. 8773/18078 cut-off events. For 140273/142258 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 145675 event pairs, 1476 based on Foata normal form. 1640/19624 useless extension candidates. Maximal degree in co-relation 86814. Up to 4966 conditions per place. [2025-04-30 10:19:28,733 INFO L140 encePairwiseOnDemand]: 36/41 looper letters, 1220 selfloop transitions, 163 changer transitions 0/1400 dead transitions. [2025-04-30 10:19:28,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 1400 transitions, 22068 flow [2025-04-30 10:19:28,733 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-04-30 10:19:28,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-04-30 10:19:28,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 284 transitions. [2025-04-30 10:19:28,734 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.6926829268292682 [2025-04-30 10:19:28,734 INFO L175 Difference]: Start difference. First operand has 165 places, 393 transitions, 5600 flow. Second operand 10 states and 284 transitions. [2025-04-30 10:19:28,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 1400 transitions, 22068 flow [2025-04-30 10:19:29,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 1400 transitions, 21979 flow, removed 12 selfloop flow, removed 4 redundant places. [2025-04-30 10:19:29,137 INFO L231 Difference]: Finished difference. Result has 173 places, 535 transitions, 7930 flow [2025-04-30 10:19:29,137 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5532, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=393, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7930, PETRI_PLACES=173, PETRI_TRANSITIONS=535} [2025-04-30 10:19:29,138 INFO L279 CegarLoopForPetriNet]: 38 programPoint places, 135 predicate places. [2025-04-30 10:19:29,138 INFO L485 AbstractCegarLoop]: Abstraction has has 173 places, 535 transitions, 7930 flow [2025-04-30 10:19:29,138 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 16.583333333333332) internal successors, (199), 12 states have internal predecessors, (199), 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 10:19:29,138 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-30 10:19:29,138 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, 1] [2025-04-30 10:19:29,143 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-04-30 10:19:29,340 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-30 10:19:29,340 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2025-04-30 10:19:29,340 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:19:29,340 INFO L85 PathProgramCache]: Analyzing trace with hash 295454368, now seen corresponding path program 1 times [2025-04-30 10:19:29,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:19:29,341 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211289946] [2025-04-30 10:19:29,341 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:19:29,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:19:29,349 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-04-30 10:19:29,356 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-04-30 10:19:29,356 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:19:29,356 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:19:29,659 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 10:19:29,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:19:29,660 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211289946] [2025-04-30 10:19:29,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211289946] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:19:29,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:19:29,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2025-04-30 10:19:29,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851754261] [2025-04-30 10:19:29,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:19:29,660 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-04-30 10:19:29,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:19:29,661 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-04-30 10:19:29,661 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2025-04-30 10:19:29,711 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 41 [2025-04-30 10:19:29,711 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 535 transitions, 7930 flow. Second operand has 14 states, 14 states have (on average 12.571428571428571) internal successors, (176), 14 states have internal predecessors, (176), 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 10:19:29,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-30 10:19:29,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 41 [2025-04-30 10:19:29,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-30 10:19:35,060 INFO L116 PetriNetUnfolderBase]: 14627/30089 cut-off events. [2025-04-30 10:19:35,061 INFO L117 PetriNetUnfolderBase]: For 261820/263096 co-relation queries the response was YES. [2025-04-30 10:19:35,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148123 conditions, 30089 events. 14627/30089 cut-off events. For 261820/263096 co-relation queries the response was YES. Maximal size of possible extension queue 596. Compared 265711 event pairs, 3490 based on Foata normal form. 1421/31391 useless extension candidates. Maximal degree in co-relation 148054. Up to 16336 conditions per place. [2025-04-30 10:19:35,514 INFO L140 encePairwiseOnDemand]: 26/41 looper letters, 699 selfloop transitions, 334 changer transitions 1/1046 dead transitions. [2025-04-30 10:19:35,514 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 1046 transitions, 16102 flow [2025-04-30 10:19:35,515 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-04-30 10:19:35,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2025-04-30 10:19:35,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 491 transitions. [2025-04-30 10:19:35,516 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.4606003752345216 [2025-04-30 10:19:35,516 INFO L175 Difference]: Start difference. First operand has 173 places, 535 transitions, 7930 flow. Second operand 26 states and 491 transitions. [2025-04-30 10:19:35,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 1046 transitions, 16102 flow [2025-04-30 10:19:36,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 1046 transitions, 16035 flow, removed 9 selfloop flow, removed 2 redundant places. [2025-04-30 10:19:36,752 INFO L231 Difference]: Finished difference. Result has 209 places, 810 transitions, 13427 flow [2025-04-30 10:19:36,753 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=7823, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=530, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=13427, PETRI_PLACES=209, PETRI_TRANSITIONS=810} [2025-04-30 10:19:36,753 INFO L279 CegarLoopForPetriNet]: 38 programPoint places, 171 predicate places. [2025-04-30 10:19:36,753 INFO L485 AbstractCegarLoop]: Abstraction has has 209 places, 810 transitions, 13427 flow [2025-04-30 10:19:36,753 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 12.571428571428571) internal successors, (176), 14 states have internal predecessors, (176), 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 10:19:36,754 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-30 10:19:36,754 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, 1] [2025-04-30 10:19:36,754 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-04-30 10:19:36,754 INFO L403 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2025-04-30 10:19:36,754 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:19:36,754 INFO L85 PathProgramCache]: Analyzing trace with hash 1594172804, now seen corresponding path program 2 times [2025-04-30 10:19:36,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:19:36,754 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795359624] [2025-04-30 10:19:36,754 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-30 10:19:36,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:19:36,760 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 28 statements into 1 equivalence classes. [2025-04-30 10:19:36,764 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-04-30 10:19:36,765 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-04-30 10:19:36,765 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:19:37,040 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 10:19:37,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:19:37,040 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795359624] [2025-04-30 10:19:37,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795359624] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:19:37,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:19:37,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2025-04-30 10:19:37,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409114841] [2025-04-30 10:19:37,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:19:37,041 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-04-30 10:19:37,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:19:37,041 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-04-30 10:19:37,041 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2025-04-30 10:19:37,083 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 41 [2025-04-30 10:19:37,083 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 810 transitions, 13427 flow. Second operand has 14 states, 14 states have (on average 12.571428571428571) internal successors, (176), 14 states have internal predecessors, (176), 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 10:19:37,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-30 10:19:37,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 41 [2025-04-30 10:19:37,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-30 10:19:46,189 INFO L116 PetriNetUnfolderBase]: 20041/41358 cut-off events. [2025-04-30 10:19:46,189 INFO L117 PetriNetUnfolderBase]: For 535468/537153 co-relation queries the response was YES. [2025-04-30 10:19:46,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 232042 conditions, 41358 events. 20041/41358 cut-off events. For 535468/537153 co-relation queries the response was YES. Maximal size of possible extension queue 826. Compared 387974 event pairs, 4535 based on Foata normal form. 1745/42904 useless extension candidates. Maximal degree in co-relation 231957. Up to 25448 conditions per place. [2025-04-30 10:19:46,821 INFO L140 encePairwiseOnDemand]: 25/41 looper letters, 964 selfloop transitions, 369 changer transitions 0/1345 dead transitions. [2025-04-30 10:19:46,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 1345 transitions, 23565 flow [2025-04-30 10:19:46,821 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-04-30 10:19:46,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2025-04-30 10:19:46,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 452 transitions. [2025-04-30 10:19:46,822 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5011086474501109 [2025-04-30 10:19:46,822 INFO L175 Difference]: Start difference. First operand has 209 places, 810 transitions, 13427 flow. Second operand 22 states and 452 transitions. [2025-04-30 10:19:46,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 1345 transitions, 23565 flow [2025-04-30 10:19:50,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 1345 transitions, 23360 flow, removed 49 selfloop flow, removed 19 redundant places. [2025-04-30 10:19:50,640 INFO L231 Difference]: Finished difference. Result has 225 places, 1116 transitions, 20092 flow [2025-04-30 10:19:50,641 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=13132, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=804, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=549, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=20092, PETRI_PLACES=225, PETRI_TRANSITIONS=1116} [2025-04-30 10:19:50,641 INFO L279 CegarLoopForPetriNet]: 38 programPoint places, 187 predicate places. [2025-04-30 10:19:50,641 INFO L485 AbstractCegarLoop]: Abstraction has has 225 places, 1116 transitions, 20092 flow [2025-04-30 10:19:50,641 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 12.571428571428571) internal successors, (176), 14 states have internal predecessors, (176), 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 10:19:50,641 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-30 10:19:50,641 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, 1] [2025-04-30 10:19:50,641 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-04-30 10:19:50,641 INFO L403 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2025-04-30 10:19:50,642 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:19:50,642 INFO L85 PathProgramCache]: Analyzing trace with hash -156256780, now seen corresponding path program 3 times [2025-04-30 10:19:50,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:19:50,642 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286642153] [2025-04-30 10:19:50,642 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-30 10:19:50,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:19:50,648 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 28 statements into 1 equivalence classes. [2025-04-30 10:19:50,651 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-04-30 10:19:50,651 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-04-30 10:19:50,651 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:19:50,729 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 10:19:50,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:19:50,729 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286642153] [2025-04-30 10:19:50,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286642153] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:19:50,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:19:50,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-04-30 10:19:50,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207942543] [2025-04-30 10:19:50,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:19:50,730 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-04-30 10:19:50,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:19:50,730 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-04-30 10:19:50,730 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-04-30 10:19:50,749 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2025-04-30 10:19:50,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 1116 transitions, 20092 flow. Second operand has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 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 10:19:50,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-30 10:19:50,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2025-04-30 10:19:50,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-30 10:20:05,643 INFO L116 PetriNetUnfolderBase]: 29679/59745 cut-off events. [2025-04-30 10:20:05,643 INFO L117 PetriNetUnfolderBase]: For 1017466/1018843 co-relation queries the response was YES. [2025-04-30 10:20:06,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 371595 conditions, 59745 events. 29679/59745 cut-off events. For 1017466/1018843 co-relation queries the response was YES. Maximal size of possible extension queue 1119. Compared 576036 event pairs, 4557 based on Foata normal form. 1285/60762 useless extension candidates. Maximal degree in co-relation 371502. Up to 30718 conditions per place. [2025-04-30 10:20:06,645 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 1491 selfloop transitions, 943 changer transitions 2/2447 dead transitions. [2025-04-30 10:20:06,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 2447 transitions, 48474 flow [2025-04-30 10:20:06,645 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-04-30 10:20:06,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2025-04-30 10:20:06,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 283 transitions. [2025-04-30 10:20:06,646 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.4930313588850174 [2025-04-30 10:20:06,646 INFO L175 Difference]: Start difference. First operand has 225 places, 1116 transitions, 20092 flow. Second operand 14 states and 283 transitions. [2025-04-30 10:20:06,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 2447 transitions, 48474 flow