./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/pthread/stack-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e2fb8bed 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 ../sv-benchmarks/c/pthread/stack-2.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 1c5d098180a5596f0a60d3177354c69a5ee6da68b8191dc75b6c33b291ef0421 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-09 06:21:17,778 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-09 06:21:17,839 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-03-09 06:21:17,845 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-09 06:21:17,845 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-09 06:21:17,863 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-09 06:21:17,864 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-09 06:21:17,864 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-09 06:21:17,864 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-09 06:21:17,864 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-09 06:21:17,864 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-09 06:21:17,864 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-09 06:21:17,864 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-09 06:21:17,865 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-09 06:21:17,865 INFO L153 SettingsManager]: * Use SBE=true [2025-03-09 06:21:17,865 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-09 06:21:17,865 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-09 06:21:17,865 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-09 06:21:17,865 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-09 06:21:17,865 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-09 06:21:17,865 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-09 06:21:17,865 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-09 06:21:17,865 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-09 06:21:17,865 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-09 06:21:17,865 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-03-09 06:21:17,865 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-09 06:21:17,865 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-09 06:21:17,865 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-09 06:21:17,865 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-09 06:21:17,865 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-09 06:21:17,865 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-09 06:21:17,865 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-09 06:21:17,865 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-09 06:21:17,866 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-09 06:21:17,866 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 06:21:17,866 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-09 06:21:17,866 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-09 06:21:17,866 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-09 06:21:17,866 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-09 06:21:17,866 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-09 06:21:17,866 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-09 06:21:17,866 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-09 06:21:17,866 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-09 06:21:17,866 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-09 06:21:17,866 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-09 06:21:17,866 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 -> 1c5d098180a5596f0a60d3177354c69a5ee6da68b8191dc75b6c33b291ef0421 [2025-03-09 06:21:18,081 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-09 06:21:18,087 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-09 06:21:18,088 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-09 06:21:18,089 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-09 06:21:18,089 INFO L274 PluginConnector]: CDTParser initialized [2025-03-09 06:21:18,090 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/stack-2.i [2025-03-09 06:21:19,234 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a51ae96c6/9dfec5946f4d43b587922858688f61ad/FLAG4cf4b093e [2025-03-09 06:21:19,525 INFO L384 CDTParser]: Found 1 translation units. [2025-03-09 06:21:19,528 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/stack-2.i [2025-03-09 06:21:19,546 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a51ae96c6/9dfec5946f4d43b587922858688f61ad/FLAG4cf4b093e [2025-03-09 06:21:19,561 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a51ae96c6/9dfec5946f4d43b587922858688f61ad [2025-03-09 06:21:19,563 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-09 06:21:19,564 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-09 06:21:19,566 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-09 06:21:19,566 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-09 06:21:19,569 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-09 06:21:19,570 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 06:21:19" (1/1) ... [2025-03-09 06:21:19,571 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4df865c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:21:19, skipping insertion in model container [2025-03-09 06:21:19,571 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 06:21:19" (1/1) ... [2025-03-09 06:21:19,602 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-09 06:21:19,965 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 06:21:19,978 INFO L200 MainTranslator]: Completed pre-run [2025-03-09 06:21:20,034 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 06:21:20,090 INFO L204 MainTranslator]: Completed translation [2025-03-09 06:21:20,090 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:21:20 WrapperNode [2025-03-09 06:21:20,091 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-09 06:21:20,092 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-09 06:21:20,092 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-09 06:21:20,092 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-09 06:21:20,097 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:21:20" (1/1) ... [2025-03-09 06:21:20,112 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:21:20" (1/1) ... [2025-03-09 06:21:20,132 INFO L138 Inliner]: procedures = 277, calls = 37, calls flagged for inlining = 13, calls inlined = 14, statements flattened = 163 [2025-03-09 06:21:20,134 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-09 06:21:20,135 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-09 06:21:20,135 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-09 06:21:20,135 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-09 06:21:20,141 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:21:20" (1/1) ... [2025-03-09 06:21:20,142 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:21:20" (1/1) ... [2025-03-09 06:21:20,145 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:21:20" (1/1) ... [2025-03-09 06:21:20,159 INFO L175 MemorySlicer]: Split 14 memory accesses to 3 slices as follows [2, 5, 7]. 50 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 5, 5]. The 1 writes are split as follows [0, 0, 1]. [2025-03-09 06:21:20,160 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:21:20" (1/1) ... [2025-03-09 06:21:20,160 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:21:20" (1/1) ... [2025-03-09 06:21:20,164 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:21:20" (1/1) ... [2025-03-09 06:21:20,164 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:21:20" (1/1) ... [2025-03-09 06:21:20,165 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:21:20" (1/1) ... [2025-03-09 06:21:20,166 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:21:20" (1/1) ... [2025-03-09 06:21:20,168 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-09 06:21:20,169 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-09 06:21:20,169 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-09 06:21:20,169 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-09 06:21:20,170 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:21:20" (1/1) ... [2025-03-09 06:21:20,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 06:21:20,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:21:20,193 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) [2025-03-09 06:21:20,196 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 [2025-03-09 06:21:20,210 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2025-03-09 06:21:20,210 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2025-03-09 06:21:20,210 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2025-03-09 06:21:20,210 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2025-03-09 06:21:20,210 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-03-09 06:21:20,210 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-09 06:21:20,210 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-09 06:21:20,210 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-09 06:21:20,210 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-09 06:21:20,210 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-09 06:21:20,210 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-09 06:21:20,210 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-03-09 06:21:20,210 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-09 06:21:20,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-09 06:21:20,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-09 06:21:20,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-09 06:21:20,211 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-09 06:21:20,211 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-09 06:21:20,211 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-09 06:21:20,334 INFO L256 CfgBuilder]: Building ICFG [2025-03-09 06:21:20,336 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-09 06:21:20,578 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L986-1: pop_#res#1 := 0; [2025-03-09 06:21:20,579 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L984: havoc pop_#t~mem38#1; [2025-03-09 06:21:20,579 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L984-1: havoc pop_#t~ret37#1; [2025-03-09 06:21:20,580 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-09 06:21:20,580 INFO L307 CfgBuilder]: Performing block encoding [2025-03-09 06:21:20,727 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-09 06:21:20,728 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-09 06:21:20,728 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 06:21:20 BoogieIcfgContainer [2025-03-09 06:21:20,728 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-09 06:21:20,730 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-09 06:21:20,730 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-09 06:21:20,733 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-09 06:21:20,734 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.03 06:21:19" (1/3) ... [2025-03-09 06:21:20,734 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a02524e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 06:21:20, skipping insertion in model container [2025-03-09 06:21:20,734 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:21:20" (2/3) ... [2025-03-09 06:21:20,735 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a02524e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 06:21:20, skipping insertion in model container [2025-03-09 06:21:20,735 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 06:21:20" (3/3) ... [2025-03-09 06:21:20,736 INFO L128 eAbstractionObserver]: Analyzing ICFG stack-2.i [2025-03-09 06:21:20,748 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-09 06:21:20,749 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG stack-2.i that has 3 procedures, 44 locations, 1 initial locations, 2 loop locations, and 8 error locations. [2025-03-09 06:21:20,749 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-09 06:21:20,811 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-03-09 06:21:20,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 50 places, 48 transitions, 110 flow [2025-03-09 06:21:20,877 INFO L124 PetriNetUnfolderBase]: 5/46 cut-off events. [2025-03-09 06:21:20,880 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-03-09 06:21:20,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 46 events. 5/46 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 131 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 43. Up to 2 conditions per place. [2025-03-09 06:21:20,883 INFO L82 GeneralOperation]: Start removeDead. Operand has 50 places, 48 transitions, 110 flow [2025-03-09 06:21:20,888 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 46 places, 44 transitions, 97 flow [2025-03-09 06:21:20,897 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-09 06:21:20,940 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7ea56a7a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-09 06:21:20,941 INFO L334 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2025-03-09 06:21:20,951 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-09 06:21:20,951 INFO L124 PetriNetUnfolderBase]: 1/20 cut-off events. [2025-03-09 06:21:20,951 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-03-09 06:21:20,951 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:21:20,952 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:21:20,952 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-03-09 06:21:20,956 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:21:20,958 INFO L85 PathProgramCache]: Analyzing trace with hash -1435140805, now seen corresponding path program 1 times [2025-03-09 06:21:20,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:21:20,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721702042] [2025-03-09 06:21:20,964 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:21:20,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:21:21,033 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-09 06:21:21,066 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-09 06:21:21,067 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:21:21,067 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:21:21,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:21:21,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:21:21,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721702042] [2025-03-09 06:21:21,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721702042] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:21:21,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:21:21,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 06:21:21,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528139014] [2025-03-09 06:21:21,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:21:21,252 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:21:21,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:21:21,272 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:21:21,273 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:21:21,283 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2025-03-09 06:21:21,286 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 44 transitions, 97 flow. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 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) [2025-03-09 06:21:21,286 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:21:21,286 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2025-03-09 06:21:21,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:21:21,605 INFO L124 PetriNetUnfolderBase]: 708/1406 cut-off events. [2025-03-09 06:21:21,605 INFO L125 PetriNetUnfolderBase]: For 59/59 co-relation queries the response was YES. [2025-03-09 06:21:21,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2592 conditions, 1406 events. 708/1406 cut-off events. For 59/59 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 7651 event pairs, 143 based on Foata normal form. 40/1294 useless extension candidates. Maximal degree in co-relation 2468. Up to 781 conditions per place. [2025-03-09 06:21:21,618 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 71 selfloop transitions, 6 changer transitions 0/91 dead transitions. [2025-03-09 06:21:21,619 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 91 transitions, 354 flow [2025-03-09 06:21:21,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 06:21:21,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-09 06:21:21,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 162 transitions. [2025-03-09 06:21:21,630 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.675 [2025-03-09 06:21:21,631 INFO L175 Difference]: Start difference. First operand has 46 places, 44 transitions, 97 flow. Second operand 5 states and 162 transitions. [2025-03-09 06:21:21,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 91 transitions, 354 flow [2025-03-09 06:21:21,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 91 transitions, 345 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-09 06:21:21,641 INFO L231 Difference]: Finished difference. Result has 50 places, 49 transitions, 140 flow [2025-03-09 06:21:21,643 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=140, PETRI_PLACES=50, PETRI_TRANSITIONS=49} [2025-03-09 06:21:21,646 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 4 predicate places. [2025-03-09 06:21:21,647 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 49 transitions, 140 flow [2025-03-09 06:21:21,647 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 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) [2025-03-09 06:21:21,647 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:21:21,647 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:21:21,647 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-09 06:21:21,647 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-03-09 06:21:21,648 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:21:21,648 INFO L85 PathProgramCache]: Analyzing trace with hash 16184202, now seen corresponding path program 1 times [2025-03-09 06:21:21,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:21:21,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088547836] [2025-03-09 06:21:21,648 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:21:21,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:21:21,659 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-09 06:21:21,692 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-09 06:21:21,692 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:21:21,692 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:21:21,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:21:21,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:21:21,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088547836] [2025-03-09 06:21:21,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088547836] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:21:21,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:21:21,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 06:21:21,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619459439] [2025-03-09 06:21:21,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:21:21,745 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:21:21,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:21:21,745 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:21:21,745 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:21:21,750 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2025-03-09 06:21:21,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 49 transitions, 140 flow. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 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) [2025-03-09 06:21:21,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:21:21,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2025-03-09 06:21:21,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:21:21,944 INFO L124 PetriNetUnfolderBase]: 746/1508 cut-off events. [2025-03-09 06:21:21,945 INFO L125 PetriNetUnfolderBase]: For 346/350 co-relation queries the response was YES. [2025-03-09 06:21:21,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3178 conditions, 1508 events. 746/1508 cut-off events. For 346/350 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 8366 event pairs, 195 based on Foata normal form. 64/1451 useless extension candidates. Maximal degree in co-relation 2800. Up to 839 conditions per place. [2025-03-09 06:21:21,953 INFO L140 encePairwiseOnDemand]: 42/48 looper letters, 67 selfloop transitions, 7 changer transitions 0/88 dead transitions. [2025-03-09 06:21:21,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 88 transitions, 388 flow [2025-03-09 06:21:21,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 06:21:21,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-09 06:21:21,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 156 transitions. [2025-03-09 06:21:21,955 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.65 [2025-03-09 06:21:21,955 INFO L175 Difference]: Start difference. First operand has 50 places, 49 transitions, 140 flow. Second operand 5 states and 156 transitions. [2025-03-09 06:21:21,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 88 transitions, 388 flow [2025-03-09 06:21:21,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 88 transitions, 388 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-09 06:21:21,958 INFO L231 Difference]: Finished difference. Result has 57 places, 52 transitions, 188 flow [2025-03-09 06:21:21,959 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=188, PETRI_PLACES=57, PETRI_TRANSITIONS=52} [2025-03-09 06:21:21,959 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 11 predicate places. [2025-03-09 06:21:21,959 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 52 transitions, 188 flow [2025-03-09 06:21:21,959 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 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) [2025-03-09 06:21:21,959 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:21:21,959 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:21:21,960 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-09 06:21:21,960 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-03-09 06:21:21,960 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:21:21,960 INFO L85 PathProgramCache]: Analyzing trace with hash 501678887, now seen corresponding path program 1 times [2025-03-09 06:21:21,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:21:21,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353929408] [2025-03-09 06:21:21,960 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:21:21,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:21:21,967 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-09 06:21:21,972 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-09 06:21:21,972 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:21:21,972 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:21:22,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:21:22,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:21:22,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353929408] [2025-03-09 06:21:22,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353929408] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:21:22,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:21:22,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:21:22,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629025057] [2025-03-09 06:21:22,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:21:22,012 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:21:22,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:21:22,013 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:21:22,013 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:21:22,018 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2025-03-09 06:21:22,018 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 52 transitions, 188 flow. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 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) [2025-03-09 06:21:22,018 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:21:22,018 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2025-03-09 06:21:22,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:21:22,279 INFO L124 PetriNetUnfolderBase]: 1250/2479 cut-off events. [2025-03-09 06:21:22,280 INFO L125 PetriNetUnfolderBase]: For 1160/1168 co-relation queries the response was YES. [2025-03-09 06:21:22,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5711 conditions, 2479 events. 1250/2479 cut-off events. For 1160/1168 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 15000 event pairs, 528 based on Foata normal form. 68/2430 useless extension candidates. Maximal degree in co-relation 5209. Up to 1228 conditions per place. [2025-03-09 06:21:22,309 INFO L140 encePairwiseOnDemand]: 42/48 looper letters, 81 selfloop transitions, 3 changer transitions 0/98 dead transitions. [2025-03-09 06:21:22,310 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 98 transitions, 527 flow [2025-03-09 06:21:22,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:21:22,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:21:22,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 132 transitions. [2025-03-09 06:21:22,312 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6875 [2025-03-09 06:21:22,313 INFO L175 Difference]: Start difference. First operand has 57 places, 52 transitions, 188 flow. Second operand 4 states and 132 transitions. [2025-03-09 06:21:22,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 98 transitions, 527 flow [2025-03-09 06:21:22,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 98 transitions, 517 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-09 06:21:22,325 INFO L231 Difference]: Finished difference. Result has 61 places, 54 transitions, 207 flow [2025-03-09 06:21:22,326 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=183, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=207, PETRI_PLACES=61, PETRI_TRANSITIONS=54} [2025-03-09 06:21:22,327 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 15 predicate places. [2025-03-09 06:21:22,327 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 54 transitions, 207 flow [2025-03-09 06:21:22,328 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 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) [2025-03-09 06:21:22,328 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:21:22,328 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:21:22,328 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-09 06:21:22,328 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-03-09 06:21:22,329 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:21:22,329 INFO L85 PathProgramCache]: Analyzing trace with hash 1588362660, now seen corresponding path program 1 times [2025-03-09 06:21:22,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:21:22,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396396432] [2025-03-09 06:21:22,329 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:21:22,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:21:22,347 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-09 06:21:22,353 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-09 06:21:22,353 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:21:22,353 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:21:22,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:21:22,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:21:22,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396396432] [2025-03-09 06:21:22,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396396432] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:21:22,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:21:22,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:21:22,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898357694] [2025-03-09 06:21:22,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:21:22,431 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:21:22,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:21:22,432 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:21:22,432 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:21:22,441 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2025-03-09 06:21:22,442 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 54 transitions, 207 flow. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 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) [2025-03-09 06:21:22,442 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:21:22,442 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2025-03-09 06:21:22,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:21:22,780 INFO L124 PetriNetUnfolderBase]: 1711/3261 cut-off events. [2025-03-09 06:21:22,780 INFO L125 PetriNetUnfolderBase]: For 2145/2317 co-relation queries the response was YES. [2025-03-09 06:21:22,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7902 conditions, 3261 events. 1711/3261 cut-off events. For 2145/2317 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 20120 event pairs, 635 based on Foata normal form. 106/3248 useless extension candidates. Maximal degree in co-relation 7134. Up to 1454 conditions per place. [2025-03-09 06:21:22,800 INFO L140 encePairwiseOnDemand]: 42/48 looper letters, 82 selfloop transitions, 3 changer transitions 0/99 dead transitions. [2025-03-09 06:21:22,800 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 99 transitions, 546 flow [2025-03-09 06:21:22,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:21:22,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:21:22,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 134 transitions. [2025-03-09 06:21:22,801 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6979166666666666 [2025-03-09 06:21:22,801 INFO L175 Difference]: Start difference. First operand has 61 places, 54 transitions, 207 flow. Second operand 4 states and 134 transitions. [2025-03-09 06:21:22,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 99 transitions, 546 flow [2025-03-09 06:21:22,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 99 transitions, 540 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-09 06:21:22,807 INFO L231 Difference]: Finished difference. Result has 65 places, 56 transitions, 229 flow [2025-03-09 06:21:22,807 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=205, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=229, PETRI_PLACES=65, PETRI_TRANSITIONS=56} [2025-03-09 06:21:22,808 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 19 predicate places. [2025-03-09 06:21:22,809 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 56 transitions, 229 flow [2025-03-09 06:21:22,809 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 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) [2025-03-09 06:21:22,809 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:21:22,809 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:21:22,809 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-09 06:21:22,809 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-03-09 06:21:22,810 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:21:22,810 INFO L85 PathProgramCache]: Analyzing trace with hash -1389023405, now seen corresponding path program 1 times [2025-03-09 06:21:22,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:21:22,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575065622] [2025-03-09 06:21:22,810 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:21:22,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:21:22,822 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-09 06:21:22,828 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-09 06:21:22,828 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:21:22,828 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:21:22,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:21:22,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:21:22,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575065622] [2025-03-09 06:21:22,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575065622] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:21:22,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:21:22,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:21:22,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370239086] [2025-03-09 06:21:22,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:21:22,934 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 06:21:22,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:21:22,934 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 06:21:22,935 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 06:21:22,935 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 48 [2025-03-09 06:21:22,935 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 56 transitions, 229 flow. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 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) [2025-03-09 06:21:22,935 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:21:22,935 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 48 [2025-03-09 06:21:22,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:21:23,121 INFO L124 PetriNetUnfolderBase]: 823/1825 cut-off events. [2025-03-09 06:21:23,122 INFO L125 PetriNetUnfolderBase]: For 1150/1226 co-relation queries the response was YES. [2025-03-09 06:21:23,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4525 conditions, 1825 events. 823/1825 cut-off events. For 1150/1226 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 10593 event pairs, 210 based on Foata normal form. 92/1886 useless extension candidates. Maximal degree in co-relation 4331. Up to 954 conditions per place. [2025-03-09 06:21:23,132 INFO L140 encePairwiseOnDemand]: 44/48 looper letters, 48 selfloop transitions, 4 changer transitions 0/68 dead transitions. [2025-03-09 06:21:23,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 68 transitions, 368 flow [2025-03-09 06:21:23,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 06:21:23,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-09 06:21:23,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 96 transitions. [2025-03-09 06:21:23,134 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2025-03-09 06:21:23,134 INFO L175 Difference]: Start difference. First operand has 65 places, 56 transitions, 229 flow. Second operand 3 states and 96 transitions. [2025-03-09 06:21:23,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 68 transitions, 368 flow [2025-03-09 06:21:23,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 68 transitions, 352 flow, removed 6 selfloop flow, removed 3 redundant places. [2025-03-09 06:21:23,140 INFO L231 Difference]: Finished difference. Result has 62 places, 52 transitions, 193 flow [2025-03-09 06:21:23,141 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=193, PETRI_PLACES=62, PETRI_TRANSITIONS=52} [2025-03-09 06:21:23,141 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 16 predicate places. [2025-03-09 06:21:23,141 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 52 transitions, 193 flow [2025-03-09 06:21:23,141 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 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) [2025-03-09 06:21:23,141 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:21:23,142 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:21:23,142 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-09 06:21:23,142 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-03-09 06:21:23,142 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:21:23,142 INFO L85 PathProgramCache]: Analyzing trace with hash -1575967881, now seen corresponding path program 1 times [2025-03-09 06:21:23,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:21:23,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564831425] [2025-03-09 06:21:23,143 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:21:23,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:21:23,150 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-09 06:21:23,156 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-09 06:21:23,156 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:21:23,156 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:21:23,230 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:21:23,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:21:23,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564831425] [2025-03-09 06:21:23,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564831425] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:21:23,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1502603034] [2025-03-09 06:21:23,231 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:21:23,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:21:23,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:21:23,234 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) [2025-03-09 06:21:23,235 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-09 06:21:23,289 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-09 06:21:23,309 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-09 06:21:23,310 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:21:23,310 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:21:23,312 INFO L256 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-09 06:21:23,314 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:21:23,371 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:21:23,372 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 06:21:23,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1502603034] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:21:23,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-09 06:21:23,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-09 06:21:23,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994559435] [2025-03-09 06:21:23,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:21:23,372 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-09 06:21:23,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:21:23,373 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-09 06:21:23,373 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-03-09 06:21:23,379 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2025-03-09 06:21:23,379 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 52 transitions, 193 flow. Second operand has 6 states, 6 states have (on average 18.5) internal successors, (111), 6 states have internal predecessors, (111), 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) [2025-03-09 06:21:23,379 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:21:23,380 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2025-03-09 06:21:23,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:21:23,668 INFO L124 PetriNetUnfolderBase]: 1302/2777 cut-off events. [2025-03-09 06:21:23,668 INFO L125 PetriNetUnfolderBase]: For 1364/1474 co-relation queries the response was YES. [2025-03-09 06:21:23,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6869 conditions, 2777 events. 1302/2777 cut-off events. For 1364/1474 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 17041 event pairs, 273 based on Foata normal form. 18/2744 useless extension candidates. Maximal degree in co-relation 5597. Up to 906 conditions per place. [2025-03-09 06:21:23,683 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 97 selfloop transitions, 9 changer transitions 0/120 dead transitions. [2025-03-09 06:21:23,683 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 120 transitions, 654 flow [2025-03-09 06:21:23,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-09 06:21:23,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-09 06:21:23,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 203 transitions. [2025-03-09 06:21:23,684 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6041666666666666 [2025-03-09 06:21:23,685 INFO L175 Difference]: Start difference. First operand has 62 places, 52 transitions, 193 flow. Second operand 7 states and 203 transitions. [2025-03-09 06:21:23,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 120 transitions, 654 flow [2025-03-09 06:21:23,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 120 transitions, 643 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-09 06:21:23,689 INFO L231 Difference]: Finished difference. Result has 70 places, 57 transitions, 251 flow [2025-03-09 06:21:23,689 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=251, PETRI_PLACES=70, PETRI_TRANSITIONS=57} [2025-03-09 06:21:23,689 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 24 predicate places. [2025-03-09 06:21:23,689 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 57 transitions, 251 flow [2025-03-09 06:21:23,690 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.5) internal successors, (111), 6 states have internal predecessors, (111), 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) [2025-03-09 06:21:23,690 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:21:23,690 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:21:23,696 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-09 06:21:23,890 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2025-03-09 06:21:23,890 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-03-09 06:21:23,891 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:21:23,891 INFO L85 PathProgramCache]: Analyzing trace with hash 2098313892, now seen corresponding path program 1 times [2025-03-09 06:21:23,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:21:23,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137076749] [2025-03-09 06:21:23,891 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:21:23,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:21:23,903 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-09 06:21:23,910 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-09 06:21:23,911 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:21:23,911 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:21:23,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:21:23,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:21:23,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137076749] [2025-03-09 06:21:23,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137076749] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:21:23,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:21:23,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 06:21:23,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288418604] [2025-03-09 06:21:23,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:21:23,987 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-09 06:21:23,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:21:23,988 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-09 06:21:23,988 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-09 06:21:24,002 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2025-03-09 06:21:24,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 57 transitions, 251 flow. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 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) [2025-03-09 06:21:24,003 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:21:24,003 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2025-03-09 06:21:24,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:21:24,361 INFO L124 PetriNetUnfolderBase]: 1824/3777 cut-off events. [2025-03-09 06:21:24,361 INFO L125 PetriNetUnfolderBase]: For 2941/3113 co-relation queries the response was YES. [2025-03-09 06:21:24,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9793 conditions, 3777 events. 1824/3777 cut-off events. For 2941/3113 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 24314 event pairs, 351 based on Foata normal form. 26/3786 useless extension candidates. Maximal degree in co-relation 7956. Up to 1716 conditions per place. [2025-03-09 06:21:24,413 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 107 selfloop transitions, 10 changer transitions 0/129 dead transitions. [2025-03-09 06:21:24,414 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 129 transitions, 757 flow [2025-03-09 06:21:24,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-09 06:21:24,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-09 06:21:24,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 195 transitions. [2025-03-09 06:21:24,415 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5803571428571429 [2025-03-09 06:21:24,415 INFO L175 Difference]: Start difference. First operand has 70 places, 57 transitions, 251 flow. Second operand 7 states and 195 transitions. [2025-03-09 06:21:24,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 129 transitions, 757 flow [2025-03-09 06:21:24,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 129 transitions, 748 flow, removed 2 selfloop flow, removed 2 redundant places. [2025-03-09 06:21:24,420 INFO L231 Difference]: Finished difference. Result has 77 places, 62 transitions, 318 flow [2025-03-09 06:21:24,421 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=318, PETRI_PLACES=77, PETRI_TRANSITIONS=62} [2025-03-09 06:21:24,421 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 31 predicate places. [2025-03-09 06:21:24,421 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 62 transitions, 318 flow [2025-03-09 06:21:24,421 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 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) [2025-03-09 06:21:24,421 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:21:24,421 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:21:24,421 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-09 06:21:24,421 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-03-09 06:21:24,422 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:21:24,422 INFO L85 PathProgramCache]: Analyzing trace with hash 1616305839, now seen corresponding path program 1 times [2025-03-09 06:21:24,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:21:24,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734465167] [2025-03-09 06:21:24,422 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:21:24,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:21:24,429 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-09 06:21:24,434 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-09 06:21:24,435 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:21:24,435 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:21:24,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:21:24,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:21:24,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734465167] [2025-03-09 06:21:24,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734465167] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:21:24,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:21:24,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 06:21:24,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003972498] [2025-03-09 06:21:24,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:21:24,509 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-09 06:21:24,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:21:24,510 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-09 06:21:24,510 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-09 06:21:24,525 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2025-03-09 06:21:24,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 62 transitions, 318 flow. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 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) [2025-03-09 06:21:24,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:21:24,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2025-03-09 06:21:24,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:21:25,029 INFO L124 PetriNetUnfolderBase]: 2301/4739 cut-off events. [2025-03-09 06:21:25,029 INFO L125 PetriNetUnfolderBase]: For 4939/5173 co-relation queries the response was YES. [2025-03-09 06:21:25,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12824 conditions, 4739 events. 2301/4739 cut-off events. For 4939/5173 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 32212 event pairs, 536 based on Foata normal form. 24/4736 useless extension candidates. Maximal degree in co-relation 9575. Up to 2363 conditions per place. [2025-03-09 06:21:25,056 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 108 selfloop transitions, 15 changer transitions 0/135 dead transitions. [2025-03-09 06:21:25,056 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 135 transitions, 848 flow [2025-03-09 06:21:25,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-09 06:21:25,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-03-09 06:21:25,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 210 transitions. [2025-03-09 06:21:25,057 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.546875 [2025-03-09 06:21:25,058 INFO L175 Difference]: Start difference. First operand has 77 places, 62 transitions, 318 flow. Second operand 8 states and 210 transitions. [2025-03-09 06:21:25,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 135 transitions, 848 flow [2025-03-09 06:21:25,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 135 transitions, 839 flow, removed 2 selfloop flow, removed 2 redundant places. [2025-03-09 06:21:25,069 INFO L231 Difference]: Finished difference. Result has 85 places, 67 transitions, 410 flow [2025-03-09 06:21:25,070 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=309, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=410, PETRI_PLACES=85, PETRI_TRANSITIONS=67} [2025-03-09 06:21:25,072 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 39 predicate places. [2025-03-09 06:21:25,072 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 67 transitions, 410 flow [2025-03-09 06:21:25,072 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 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) [2025-03-09 06:21:25,072 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:21:25,072 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:21:25,072 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-09 06:21:25,073 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-03-09 06:21:25,073 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:21:25,073 INFO L85 PathProgramCache]: Analyzing trace with hash -1478154692, now seen corresponding path program 1 times [2025-03-09 06:21:25,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:21:25,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376963475] [2025-03-09 06:21:25,073 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:21:25,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:21:25,080 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-09 06:21:25,083 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-09 06:21:25,083 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:21:25,083 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:21:25,141 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:21:25,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:21:25,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376963475] [2025-03-09 06:21:25,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376963475] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:21:25,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [132356775] [2025-03-09 06:21:25,142 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:21:25,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:21:25,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:21:25,144 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) [2025-03-09 06:21:25,146 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-09 06:21:25,198 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-09 06:21:25,212 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-09 06:21:25,213 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:21:25,213 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:21:25,214 INFO L256 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-09 06:21:25,215 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:21:25,245 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:21:25,245 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 06:21:25,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [132356775] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:21:25,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-09 06:21:25,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2025-03-09 06:21:25,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407340882] [2025-03-09 06:21:25,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:21:25,246 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 06:21:25,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:21:25,246 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 06:21:25,246 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2025-03-09 06:21:25,252 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2025-03-09 06:21:25,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 67 transitions, 410 flow. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 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) [2025-03-09 06:21:25,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:21:25,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2025-03-09 06:21:25,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:21:25,674 INFO L124 PetriNetUnfolderBase]: 2583/5004 cut-off events. [2025-03-09 06:21:25,675 INFO L125 PetriNetUnfolderBase]: For 8300/8538 co-relation queries the response was YES. [2025-03-09 06:21:25,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14300 conditions, 5004 events. 2583/5004 cut-off events. For 8300/8538 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 32580 event pairs, 315 based on Foata normal form. 130/4995 useless extension candidates. Maximal degree in co-relation 11097. Up to 2463 conditions per place. [2025-03-09 06:21:25,699 INFO L140 encePairwiseOnDemand]: 44/48 looper letters, 89 selfloop transitions, 5 changer transitions 0/110 dead transitions. [2025-03-09 06:21:25,700 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 110 transitions, 898 flow [2025-03-09 06:21:25,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:21:25,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:21:25,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 117 transitions. [2025-03-09 06:21:25,701 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.609375 [2025-03-09 06:21:25,701 INFO L175 Difference]: Start difference. First operand has 85 places, 67 transitions, 410 flow. Second operand 4 states and 117 transitions. [2025-03-09 06:21:25,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 110 transitions, 898 flow [2025-03-09 06:21:25,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 110 transitions, 864 flow, removed 8 selfloop flow, removed 4 redundant places. [2025-03-09 06:21:25,713 INFO L231 Difference]: Finished difference. Result has 83 places, 66 transitions, 396 flow [2025-03-09 06:21:25,713 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=386, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=396, PETRI_PLACES=83, PETRI_TRANSITIONS=66} [2025-03-09 06:21:25,714 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 37 predicate places. [2025-03-09 06:21:25,714 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 66 transitions, 396 flow [2025-03-09 06:21:25,714 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 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) [2025-03-09 06:21:25,714 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:21:25,714 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:21:25,720 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-09 06:21:25,914 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2025-03-09 06:21:25,915 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-03-09 06:21:25,915 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:21:25,915 INFO L85 PathProgramCache]: Analyzing trace with hash -1610363678, now seen corresponding path program 1 times [2025-03-09 06:21:25,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:21:25,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747014565] [2025-03-09 06:21:25,915 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:21:25,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:21:25,924 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-09 06:21:25,931 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-09 06:21:25,931 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:21:25,931 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:21:25,999 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:21:25,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:21:25,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747014565] [2025-03-09 06:21:25,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747014565] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:21:25,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [623895373] [2025-03-09 06:21:25,999 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:21:25,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:21:25,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:21:26,003 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) [2025-03-09 06:21:26,005 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-09 06:21:26,052 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-09 06:21:26,069 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-09 06:21:26,069 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:21:26,069 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:21:26,070 INFO L256 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-09 06:21:26,071 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:21:26,110 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:21:26,111 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:21:26,154 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:21:26,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [623895373] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:21:26,155 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:21:26,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2025-03-09 06:21:26,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042891822] [2025-03-09 06:21:26,155 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:21:26,156 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-09 06:21:26,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:21:26,156 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-09 06:21:26,157 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-03-09 06:21:26,166 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2025-03-09 06:21:26,166 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 66 transitions, 396 flow. Second operand has 12 states, 12 states have (on average 19.083333333333332) internal successors, (229), 12 states have internal predecessors, (229), 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) [2025-03-09 06:21:26,166 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:21:26,167 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2025-03-09 06:21:26,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:21:26,894 INFO L124 PetriNetUnfolderBase]: 3141/6608 cut-off events. [2025-03-09 06:21:26,894 INFO L125 PetriNetUnfolderBase]: For 12128/12358 co-relation queries the response was YES. [2025-03-09 06:21:26,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19322 conditions, 6608 events. 3141/6608 cut-off events. For 12128/12358 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 46702 event pairs, 788 based on Foata normal form. 90/6667 useless extension candidates. Maximal degree in co-relation 15679. Up to 2350 conditions per place. [2025-03-09 06:21:26,932 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 173 selfloop transitions, 20 changer transitions 0/207 dead transitions. [2025-03-09 06:21:26,932 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 207 transitions, 1464 flow [2025-03-09 06:21:26,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-09 06:21:26,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-03-09 06:21:26,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 335 transitions. [2025-03-09 06:21:26,934 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.634469696969697 [2025-03-09 06:21:26,934 INFO L175 Difference]: Start difference. First operand has 83 places, 66 transitions, 396 flow. Second operand 11 states and 335 transitions. [2025-03-09 06:21:26,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 207 transitions, 1464 flow [2025-03-09 06:21:26,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 207 transitions, 1366 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-09 06:21:26,952 INFO L231 Difference]: Finished difference. Result has 94 places, 77 transitions, 588 flow [2025-03-09 06:21:26,953 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=386, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=588, PETRI_PLACES=94, PETRI_TRANSITIONS=77} [2025-03-09 06:21:26,953 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 48 predicate places. [2025-03-09 06:21:26,953 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 77 transitions, 588 flow [2025-03-09 06:21:26,953 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 19.083333333333332) internal successors, (229), 12 states have internal predecessors, (229), 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) [2025-03-09 06:21:26,953 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:21:26,953 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:21:26,960 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-09 06:21:27,158 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:21:27,158 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-03-09 06:21:27,159 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:21:27,159 INFO L85 PathProgramCache]: Analyzing trace with hash -1350610787, now seen corresponding path program 1 times [2025-03-09 06:21:27,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:21:27,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903586119] [2025-03-09 06:21:27,159 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:21:27,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:21:27,165 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-03-09 06:21:27,173 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-03-09 06:21:27,173 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:21:27,173 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:21:27,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:21:27,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:21:27,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903586119] [2025-03-09 06:21:27,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903586119] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:21:27,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:21:27,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 06:21:27,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438996202] [2025-03-09 06:21:27,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:21:27,226 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-09 06:21:27,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:21:27,226 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-09 06:21:27,226 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-09 06:21:27,239 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2025-03-09 06:21:27,240 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 77 transitions, 588 flow. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 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) [2025-03-09 06:21:27,240 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:21:27,240 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2025-03-09 06:21:27,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:21:27,850 INFO L124 PetriNetUnfolderBase]: 3469/6946 cut-off events. [2025-03-09 06:21:27,851 INFO L125 PetriNetUnfolderBase]: For 13979/14366 co-relation queries the response was YES. [2025-03-09 06:21:27,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20153 conditions, 6946 events. 3469/6946 cut-off events. For 13979/14366 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 45881 event pairs, 727 based on Foata normal form. 67/6990 useless extension candidates. Maximal degree in co-relation 17120. Up to 3973 conditions per place. [2025-03-09 06:21:27,894 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 127 selfloop transitions, 14 changer transitions 0/152 dead transitions. [2025-03-09 06:21:27,894 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 152 transitions, 1179 flow [2025-03-09 06:21:27,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-09 06:21:27,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-03-09 06:21:27,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 212 transitions. [2025-03-09 06:21:27,895 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5520833333333334 [2025-03-09 06:21:27,895 INFO L175 Difference]: Start difference. First operand has 94 places, 77 transitions, 588 flow. Second operand 8 states and 212 transitions. [2025-03-09 06:21:27,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 152 transitions, 1179 flow [2025-03-09 06:21:27,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 152 transitions, 1162 flow, removed 6 selfloop flow, removed 2 redundant places. [2025-03-09 06:21:27,924 INFO L231 Difference]: Finished difference. Result has 102 places, 84 transitions, 689 flow [2025-03-09 06:21:27,925 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=571, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=689, PETRI_PLACES=102, PETRI_TRANSITIONS=84} [2025-03-09 06:21:27,925 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 56 predicate places. [2025-03-09 06:21:27,925 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 84 transitions, 689 flow [2025-03-09 06:21:27,926 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 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) [2025-03-09 06:21:27,926 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:21:27,926 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:21:27,926 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-09 06:21:27,926 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-03-09 06:21:27,927 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:21:27,927 INFO L85 PathProgramCache]: Analyzing trace with hash -1434126166, now seen corresponding path program 1 times [2025-03-09 06:21:27,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:21:27,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310595074] [2025-03-09 06:21:27,927 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:21:27,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:21:27,939 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-03-09 06:21:27,944 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-03-09 06:21:27,944 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:21:27,945 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:21:28,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:21:28,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:21:28,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310595074] [2025-03-09 06:21:28,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310595074] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:21:28,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:21:28,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 06:21:28,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855650962] [2025-03-09 06:21:28,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:21:28,008 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-09 06:21:28,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:21:28,009 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-09 06:21:28,009 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-09 06:21:28,023 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2025-03-09 06:21:28,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 84 transitions, 689 flow. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 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) [2025-03-09 06:21:28,024 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:21:28,024 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2025-03-09 06:21:28,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:21:28,697 INFO L124 PetriNetUnfolderBase]: 3507/7161 cut-off events. [2025-03-09 06:21:28,697 INFO L125 PetriNetUnfolderBase]: For 14979/15265 co-relation queries the response was YES. [2025-03-09 06:21:28,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21149 conditions, 7161 events. 3507/7161 cut-off events. For 14979/15265 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 49122 event pairs, 947 based on Foata normal form. 12/7148 useless extension candidates. Maximal degree in co-relation 17965. Up to 5369 conditions per place. [2025-03-09 06:21:28,736 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 113 selfloop transitions, 8 changer transitions 0/132 dead transitions. [2025-03-09 06:21:28,737 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 132 transitions, 1113 flow [2025-03-09 06:21:28,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-09 06:21:28,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-09 06:21:28,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 177 transitions. [2025-03-09 06:21:28,738 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5267857142857143 [2025-03-09 06:21:28,738 INFO L175 Difference]: Start difference. First operand has 102 places, 84 transitions, 689 flow. Second operand 7 states and 177 transitions. [2025-03-09 06:21:28,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 132 transitions, 1113 flow [2025-03-09 06:21:28,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 132 transitions, 1096 flow, removed 5 selfloop flow, removed 3 redundant places. [2025-03-09 06:21:28,766 INFO L231 Difference]: Finished difference. Result has 107 places, 85 transitions, 709 flow [2025-03-09 06:21:28,767 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=674, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=709, PETRI_PLACES=107, PETRI_TRANSITIONS=85} [2025-03-09 06:21:28,768 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 61 predicate places. [2025-03-09 06:21:28,768 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 85 transitions, 709 flow [2025-03-09 06:21:28,769 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 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) [2025-03-09 06:21:28,769 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:21:28,769 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:21:28,769 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-09 06:21:28,769 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-03-09 06:21:28,769 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:21:28,769 INFO L85 PathProgramCache]: Analyzing trace with hash 1421845207, now seen corresponding path program 1 times [2025-03-09 06:21:28,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:21:28,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812355538] [2025-03-09 06:21:28,770 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:21:28,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:21:28,777 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-03-09 06:21:28,780 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-03-09 06:21:28,780 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:21:28,780 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:21:28,804 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-09 06:21:28,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:21:28,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812355538] [2025-03-09 06:21:28,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812355538] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:21:28,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:21:28,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:21:28,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925306863] [2025-03-09 06:21:28,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:21:28,806 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:21:28,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:21:28,807 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:21:28,807 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:21:28,810 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2025-03-09 06:21:28,811 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 85 transitions, 709 flow. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 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) [2025-03-09 06:21:28,811 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:21:28,811 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2025-03-09 06:21:28,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:21:29,362 INFO L124 PetriNetUnfolderBase]: 3533/7263 cut-off events. [2025-03-09 06:21:29,362 INFO L125 PetriNetUnfolderBase]: For 16088/16336 co-relation queries the response was YES. [2025-03-09 06:21:29,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21252 conditions, 7263 events. 3533/7263 cut-off events. For 16088/16336 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 50249 event pairs, 590 based on Foata normal form. 0/7262 useless extension candidates. Maximal degree in co-relation 18131. Up to 3403 conditions per place. [2025-03-09 06:21:29,393 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 134 selfloop transitions, 6 changer transitions 0/157 dead transitions. [2025-03-09 06:21:29,393 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 157 transitions, 1695 flow [2025-03-09 06:21:29,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:21:29,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:21:29,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 117 transitions. [2025-03-09 06:21:29,394 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.609375 [2025-03-09 06:21:29,394 INFO L175 Difference]: Start difference. First operand has 107 places, 85 transitions, 709 flow. Second operand 4 states and 117 transitions. [2025-03-09 06:21:29,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 157 transitions, 1695 flow [2025-03-09 06:21:29,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 157 transitions, 1668 flow, removed 10 selfloop flow, removed 2 redundant places. [2025-03-09 06:21:29,419 INFO L231 Difference]: Finished difference. Result has 108 places, 85 transitions, 712 flow [2025-03-09 06:21:29,419 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=692, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=712, PETRI_PLACES=108, PETRI_TRANSITIONS=85} [2025-03-09 06:21:29,420 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 62 predicate places. [2025-03-09 06:21:29,420 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 85 transitions, 712 flow [2025-03-09 06:21:29,420 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 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) [2025-03-09 06:21:29,420 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:21:29,420 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:21:29,420 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-09 06:21:29,420 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-03-09 06:21:29,421 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:21:29,421 INFO L85 PathProgramCache]: Analyzing trace with hash 1044717523, now seen corresponding path program 1 times [2025-03-09 06:21:29,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:21:29,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952707502] [2025-03-09 06:21:29,421 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:21:29,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:21:29,429 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-03-09 06:21:29,438 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-03-09 06:21:29,438 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:21:29,438 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:21:29,482 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:21:29,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:21:29,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952707502] [2025-03-09 06:21:29,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952707502] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:21:29,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1591704412] [2025-03-09 06:21:29,483 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:21:29,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:21:29,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:21:29,485 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 06:21:29,486 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-09 06:21:29,533 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-03-09 06:21:29,548 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-03-09 06:21:29,548 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:21:29,548 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:21:29,549 INFO L256 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-09 06:21:29,550 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:21:29,581 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:21:29,582 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:21:29,623 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:21:29,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1591704412] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:21:29,624 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:21:29,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2025-03-09 06:21:29,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390733765] [2025-03-09 06:21:29,624 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:21:29,624 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-09 06:21:29,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:21:29,625 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-09 06:21:29,625 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-03-09 06:21:29,629 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2025-03-09 06:21:29,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 85 transitions, 712 flow. Second operand has 12 states, 12 states have (on average 18.833333333333332) internal successors, (226), 12 states have internal predecessors, (226), 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) [2025-03-09 06:21:29,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:21:29,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2025-03-09 06:21:29,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:21:30,747 INFO L124 PetriNetUnfolderBase]: 4337/8694 cut-off events. [2025-03-09 06:21:30,747 INFO L125 PetriNetUnfolderBase]: For 19505/19861 co-relation queries the response was YES. [2025-03-09 06:21:30,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27014 conditions, 8694 events. 4337/8694 cut-off events. For 19505/19861 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 58788 event pairs, 927 based on Foata normal form. 39/8708 useless extension candidates. Maximal degree in co-relation 23704. Up to 4364 conditions per place. [2025-03-09 06:21:30,808 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 201 selfloop transitions, 45 changer transitions 0/260 dead transitions. [2025-03-09 06:21:30,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 260 transitions, 1989 flow [2025-03-09 06:21:30,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-03-09 06:21:30,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2025-03-09 06:21:30,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 456 transitions. [2025-03-09 06:21:30,810 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5588235294117647 [2025-03-09 06:21:30,810 INFO L175 Difference]: Start difference. First operand has 108 places, 85 transitions, 712 flow. Second operand 17 states and 456 transitions. [2025-03-09 06:21:30,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 260 transitions, 1989 flow [2025-03-09 06:21:30,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 260 transitions, 1955 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-09 06:21:30,847 INFO L231 Difference]: Finished difference. Result has 126 places, 108 transitions, 1072 flow [2025-03-09 06:21:30,847 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=704, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1072, PETRI_PLACES=126, PETRI_TRANSITIONS=108} [2025-03-09 06:21:30,847 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 80 predicate places. [2025-03-09 06:21:30,848 INFO L471 AbstractCegarLoop]: Abstraction has has 126 places, 108 transitions, 1072 flow [2025-03-09 06:21:30,848 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 18.833333333333332) internal successors, (226), 12 states have internal predecessors, (226), 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) [2025-03-09 06:21:30,848 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:21:30,848 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2025-03-09 06:21:30,853 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-09 06:21:31,048 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:21:31,048 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-03-09 06:21:31,049 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:21:31,049 INFO L85 PathProgramCache]: Analyzing trace with hash 779869416, now seen corresponding path program 1 times [2025-03-09 06:21:31,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:21:31,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705955504] [2025-03-09 06:21:31,049 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:21:31,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:21:31,057 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-03-09 06:21:31,063 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-03-09 06:21:31,064 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:21:31,064 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:21:31,136 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:21:31,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:21:31,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705955504] [2025-03-09 06:21:31,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705955504] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:21:31,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2004271428] [2025-03-09 06:21:31,137 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:21:31,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:21:31,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:21:31,139 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 06:21:31,140 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-09 06:21:31,193 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-03-09 06:21:31,210 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-03-09 06:21:31,211 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:21:31,211 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:21:31,211 INFO L256 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-09 06:21:31,213 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:21:31,244 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:21:31,244 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 06:21:31,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2004271428] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:21:31,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-09 06:21:31,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2025-03-09 06:21:31,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484226085] [2025-03-09 06:21:31,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:21:31,245 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 06:21:31,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:21:31,246 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 06:21:31,246 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2025-03-09 06:21:31,250 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2025-03-09 06:21:31,251 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 108 transitions, 1072 flow. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 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) [2025-03-09 06:21:31,251 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:21:31,251 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2025-03-09 06:21:31,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:21:32,078 INFO L124 PetriNetUnfolderBase]: 4901/9400 cut-off events. [2025-03-09 06:21:32,078 INFO L125 PetriNetUnfolderBase]: For 24971/25025 co-relation queries the response was YES. [2025-03-09 06:21:32,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29817 conditions, 9400 events. 4901/9400 cut-off events. For 24971/25025 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 62801 event pairs, 712 based on Foata normal form. 262/9400 useless extension candidates. Maximal degree in co-relation 28870. Up to 5331 conditions per place. [2025-03-09 06:21:32,129 INFO L140 encePairwiseOnDemand]: 44/48 looper letters, 138 selfloop transitions, 5 changer transitions 0/163 dead transitions. [2025-03-09 06:21:32,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 163 transitions, 1819 flow [2025-03-09 06:21:32,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:21:32,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:21:32,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 119 transitions. [2025-03-09 06:21:32,130 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6197916666666666 [2025-03-09 06:21:32,130 INFO L175 Difference]: Start difference. First operand has 126 places, 108 transitions, 1072 flow. Second operand 4 states and 119 transitions. [2025-03-09 06:21:32,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 163 transitions, 1819 flow [2025-03-09 06:21:32,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 163 transitions, 1699 flow, removed 52 selfloop flow, removed 4 redundant places. [2025-03-09 06:21:32,168 INFO L231 Difference]: Finished difference. Result has 124 places, 107 transitions, 1007 flow [2025-03-09 06:21:32,168 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=997, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1007, PETRI_PLACES=124, PETRI_TRANSITIONS=107} [2025-03-09 06:21:32,168 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 78 predicate places. [2025-03-09 06:21:32,168 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 107 transitions, 1007 flow [2025-03-09 06:21:32,168 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 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) [2025-03-09 06:21:32,169 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:21:32,169 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2025-03-09 06:21:32,174 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-03-09 06:21:32,369 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2025-03-09 06:21:32,369 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-03-09 06:21:32,370 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:21:32,370 INFO L85 PathProgramCache]: Analyzing trace with hash -1593851497, now seen corresponding path program 1 times [2025-03-09 06:21:32,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:21:32,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827647032] [2025-03-09 06:21:32,370 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:21:32,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:21:32,378 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-03-09 06:21:32,381 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-03-09 06:21:32,381 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:21:32,381 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:21:32,405 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-09 06:21:32,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:21:32,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827647032] [2025-03-09 06:21:32,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827647032] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:21:32,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:21:32,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:21:32,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154835024] [2025-03-09 06:21:32,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:21:32,406 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:21:32,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:21:32,407 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:21:32,407 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:21:32,411 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2025-03-09 06:21:32,411 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 107 transitions, 1007 flow. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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) [2025-03-09 06:21:32,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:21:32,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2025-03-09 06:21:32,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:21:33,094 INFO L124 PetriNetUnfolderBase]: 4541/9002 cut-off events. [2025-03-09 06:21:33,094 INFO L125 PetriNetUnfolderBase]: For 23394/23398 co-relation queries the response was YES. [2025-03-09 06:21:33,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28777 conditions, 9002 events. 4541/9002 cut-off events. For 23394/23398 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 60676 event pairs, 901 based on Foata normal form. 262/9238 useless extension candidates. Maximal degree in co-relation 27049. Up to 4371 conditions per place. [2025-03-09 06:21:33,137 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 153 selfloop transitions, 6 changer transitions 0/179 dead transitions. [2025-03-09 06:21:33,137 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 179 transitions, 1925 flow [2025-03-09 06:21:33,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:21:33,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:21:33,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 119 transitions. [2025-03-09 06:21:33,138 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6197916666666666 [2025-03-09 06:21:33,138 INFO L175 Difference]: Start difference. First operand has 124 places, 107 transitions, 1007 flow. Second operand 4 states and 119 transitions. [2025-03-09 06:21:33,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 179 transitions, 1925 flow [2025-03-09 06:21:33,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 179 transitions, 1915 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-09 06:21:33,182 INFO L231 Difference]: Finished difference. Result has 124 places, 107 transitions, 1013 flow [2025-03-09 06:21:33,182 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=993, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1013, PETRI_PLACES=124, PETRI_TRANSITIONS=107} [2025-03-09 06:21:33,182 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 78 predicate places. [2025-03-09 06:21:33,182 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 107 transitions, 1013 flow [2025-03-09 06:21:33,182 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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) [2025-03-09 06:21:33,182 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:21:33,182 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, 1, 1, 1] [2025-03-09 06:21:33,182 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-03-09 06:21:33,182 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-03-09 06:21:33,183 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:21:33,183 INFO L85 PathProgramCache]: Analyzing trace with hash 1507878101, now seen corresponding path program 1 times [2025-03-09 06:21:33,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:21:33,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085507166] [2025-03-09 06:21:33,183 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:21:33,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:21:33,190 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-03-09 06:21:33,197 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-03-09 06:21:33,197 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:21:33,197 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:21:33,277 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:21:33,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:21:33,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085507166] [2025-03-09 06:21:33,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085507166] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:21:33,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [743136842] [2025-03-09 06:21:33,278 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:21:33,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:21:33,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:21:33,280 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 06:21:33,281 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-09 06:21:33,330 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-03-09 06:21:33,350 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-03-09 06:21:33,350 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:21:33,350 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:21:33,351 INFO L256 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-09 06:21:33,352 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:21:33,373 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-09 06:21:33,373 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 06:21:33,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [743136842] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:21:33,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-09 06:21:33,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 9 [2025-03-09 06:21:33,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583310179] [2025-03-09 06:21:33,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:21:33,374 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:21:33,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:21:33,375 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:21:33,375 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2025-03-09 06:21:33,378 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2025-03-09 06:21:33,378 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 107 transitions, 1013 flow. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 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) [2025-03-09 06:21:33,378 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:21:33,378 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2025-03-09 06:21:33,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:21:33,973 INFO L124 PetriNetUnfolderBase]: 4019/8167 cut-off events. [2025-03-09 06:21:33,973 INFO L125 PetriNetUnfolderBase]: For 23608/23608 co-relation queries the response was YES. [2025-03-09 06:21:34,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26770 conditions, 8167 events. 4019/8167 cut-off events. For 23608/23608 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 55416 event pairs, 2882 based on Foata normal form. 76/8190 useless extension candidates. Maximal degree in co-relation 25162. Up to 5989 conditions per place. [2025-03-09 06:21:34,029 INFO L140 encePairwiseOnDemand]: 44/48 looper letters, 73 selfloop transitions, 24 changer transitions 0/115 dead transitions. [2025-03-09 06:21:34,029 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 115 transitions, 1237 flow [2025-03-09 06:21:34,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:21:34,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:21:34,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 101 transitions. [2025-03-09 06:21:34,030 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5260416666666666 [2025-03-09 06:21:34,030 INFO L175 Difference]: Start difference. First operand has 124 places, 107 transitions, 1013 flow. Second operand 4 states and 101 transitions. [2025-03-09 06:21:34,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 115 transitions, 1237 flow [2025-03-09 06:21:34,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 115 transitions, 1213 flow, removed 6 selfloop flow, removed 3 redundant places. [2025-03-09 06:21:34,077 INFO L231 Difference]: Finished difference. Result has 121 places, 106 transitions, 1027 flow [2025-03-09 06:21:34,077 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=979, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1027, PETRI_PLACES=121, PETRI_TRANSITIONS=106} [2025-03-09 06:21:34,077 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 75 predicate places. [2025-03-09 06:21:34,077 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 106 transitions, 1027 flow [2025-03-09 06:21:34,077 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 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) [2025-03-09 06:21:34,077 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:21:34,077 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:21:34,084 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-03-09 06:21:34,278 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2025-03-09 06:21:34,278 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-03-09 06:21:34,279 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:21:34,279 INFO L85 PathProgramCache]: Analyzing trace with hash 1612448420, now seen corresponding path program 1 times [2025-03-09 06:21:34,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:21:34,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449585249] [2025-03-09 06:21:34,279 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:21:34,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:21:34,285 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-03-09 06:21:34,289 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-03-09 06:21:34,289 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:21:34,289 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:21:34,362 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:21:34,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:21:34,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449585249] [2025-03-09 06:21:34,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449585249] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:21:34,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [577812350] [2025-03-09 06:21:34,362 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:21:34,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:21:34,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:21:34,365 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 06:21:34,367 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-09 06:21:34,421 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-03-09 06:21:34,441 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-03-09 06:21:34,442 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:21:34,442 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:21:34,443 INFO L256 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-09 06:21:34,444 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:21:34,490 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:21:34,490 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 06:21:34,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [577812350] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:21:34,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-09 06:21:34,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2025-03-09 06:21:34,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047798342] [2025-03-09 06:21:34,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:21:34,491 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-09 06:21:34,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:21:34,491 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-09 06:21:34,491 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2025-03-09 06:21:34,504 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2025-03-09 06:21:34,504 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 106 transitions, 1027 flow. Second operand has 8 states, 8 states have (on average 17.0) internal successors, (136), 8 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:21:34,505 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:21:34,505 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2025-03-09 06:21:34,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:21:35,415 INFO L124 PetriNetUnfolderBase]: 4670/9095 cut-off events. [2025-03-09 06:21:35,416 INFO L125 PetriNetUnfolderBase]: For 26349/26349 co-relation queries the response was YES. [2025-03-09 06:21:35,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29418 conditions, 9095 events. 4670/9095 cut-off events. For 26349/26349 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 59956 event pairs, 908 based on Foata normal form. 63/9125 useless extension candidates. Maximal degree in co-relation 27915. Up to 2687 conditions per place. [2025-03-09 06:21:35,478 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 179 selfloop transitions, 41 changer transitions 0/231 dead transitions. [2025-03-09 06:21:35,478 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 231 transitions, 2070 flow [2025-03-09 06:21:35,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-09 06:21:35,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-03-09 06:21:35,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 311 transitions. [2025-03-09 06:21:35,480 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5399305555555556 [2025-03-09 06:21:35,480 INFO L175 Difference]: Start difference. First operand has 121 places, 106 transitions, 1027 flow. Second operand 12 states and 311 transitions. [2025-03-09 06:21:35,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 231 transitions, 2070 flow [2025-03-09 06:21:35,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 231 transitions, 2012 flow, removed 1 selfloop flow, removed 3 redundant places. [2025-03-09 06:21:35,526 INFO L231 Difference]: Finished difference. Result has 132 places, 118 transitions, 1242 flow [2025-03-09 06:21:35,526 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=977, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1242, PETRI_PLACES=132, PETRI_TRANSITIONS=118} [2025-03-09 06:21:35,527 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 86 predicate places. [2025-03-09 06:21:35,527 INFO L471 AbstractCegarLoop]: Abstraction has has 132 places, 118 transitions, 1242 flow [2025-03-09 06:21:35,527 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.0) internal successors, (136), 8 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:21:35,527 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:21:35,527 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:21:35,533 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-03-09 06:21:35,727 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:21:35,728 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-03-09 06:21:35,728 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:21:35,728 INFO L85 PathProgramCache]: Analyzing trace with hash 2035566679, now seen corresponding path program 1 times [2025-03-09 06:21:35,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:21:35,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591926640] [2025-03-09 06:21:35,728 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:21:35,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:21:35,738 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 32 statements into 1 equivalence classes. [2025-03-09 06:21:35,746 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 32 of 32 statements. [2025-03-09 06:21:35,746 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:21:35,746 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:21:35,818 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:21:35,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:21:35,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591926640] [2025-03-09 06:21:35,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591926640] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:21:35,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [177846526] [2025-03-09 06:21:35,819 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:21:35,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:21:35,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:21:35,821 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 06:21:35,822 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-09 06:21:35,876 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 32 statements into 1 equivalence classes. [2025-03-09 06:21:35,895 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 32 of 32 statements. [2025-03-09 06:21:35,896 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:21:35,896 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:21:35,897 INFO L256 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-09 06:21:35,898 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:21:35,932 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:21:35,932 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:21:35,997 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:21:35,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [177846526] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:21:35,998 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:21:35,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 12 [2025-03-09 06:21:35,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055385114] [2025-03-09 06:21:35,998 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:21:35,998 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-09 06:21:35,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:21:35,999 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-09 06:21:35,999 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2025-03-09 06:21:36,013 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2025-03-09 06:21:36,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 118 transitions, 1242 flow. Second operand has 14 states, 14 states have (on average 17.285714285714285) internal successors, (242), 14 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:21:36,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:21:36,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2025-03-09 06:21:36,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:21:37,245 INFO L124 PetriNetUnfolderBase]: 6445/12245 cut-off events. [2025-03-09 06:21:37,245 INFO L125 PetriNetUnfolderBase]: For 36038/36038 co-relation queries the response was YES. [2025-03-09 06:21:37,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40236 conditions, 12245 events. 6445/12245 cut-off events. For 36038/36038 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 84568 event pairs, 978 based on Foata normal form. 93/12301 useless extension candidates. Maximal degree in co-relation 38919. Up to 3478 conditions per place. [2025-03-09 06:21:37,336 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 267 selfloop transitions, 98 changer transitions 0/374 dead transitions. [2025-03-09 06:21:37,337 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 374 transitions, 3333 flow [2025-03-09 06:21:37,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-03-09 06:21:37,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2025-03-09 06:21:37,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 567 transitions. [2025-03-09 06:21:37,338 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4725 [2025-03-09 06:21:37,338 INFO L175 Difference]: Start difference. First operand has 132 places, 118 transitions, 1242 flow. Second operand 25 states and 567 transitions. [2025-03-09 06:21:37,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 374 transitions, 3333 flow [2025-03-09 06:21:37,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 374 transitions, 3290 flow, removed 6 selfloop flow, removed 3 redundant places. [2025-03-09 06:21:37,400 INFO L231 Difference]: Finished difference. Result has 158 places, 157 transitions, 1944 flow [2025-03-09 06:21:37,400 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1208, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=1944, PETRI_PLACES=158, PETRI_TRANSITIONS=157} [2025-03-09 06:21:37,400 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 112 predicate places. [2025-03-09 06:21:37,400 INFO L471 AbstractCegarLoop]: Abstraction has has 158 places, 157 transitions, 1944 flow [2025-03-09 06:21:37,400 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 17.285714285714285) internal successors, (242), 14 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:21:37,400 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:21:37,401 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:21:37,408 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-03-09 06:21:37,601 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:21:37,601 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-03-09 06:21:37,602 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:21:37,602 INFO L85 PathProgramCache]: Analyzing trace with hash -1004436461, now seen corresponding path program 1 times [2025-03-09 06:21:37,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:21:37,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479192841] [2025-03-09 06:21:37,602 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:21:37,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:21:37,608 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 32 statements into 1 equivalence classes. [2025-03-09 06:21:37,616 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 32 of 32 statements. [2025-03-09 06:21:37,616 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:21:37,616 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:21:37,677 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:21:37,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:21:37,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479192841] [2025-03-09 06:21:37,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479192841] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:21:37,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [601450715] [2025-03-09 06:21:37,678 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:21:37,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:21:37,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:21:37,680 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 06:21:37,681 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-09 06:21:37,732 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 32 statements into 1 equivalence classes. [2025-03-09 06:21:37,753 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 32 of 32 statements. [2025-03-09 06:21:37,753 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:21:37,753 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:21:37,754 INFO L256 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-09 06:21:37,760 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:21:37,802 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:21:37,802 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:21:37,864 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:21:37,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [601450715] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:21:37,864 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:21:37,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2025-03-09 06:21:37,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046614879] [2025-03-09 06:21:37,864 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:21:37,864 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-03-09 06:21:37,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:21:37,865 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-03-09 06:21:37,865 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2025-03-09 06:21:37,883 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2025-03-09 06:21:37,883 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 157 transitions, 1944 flow. Second operand has 16 states, 16 states have (on average 17.625) internal successors, (282), 16 states have internal predecessors, (282), 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) [2025-03-09 06:21:37,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:21:37,883 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2025-03-09 06:21:37,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:21:39,342 INFO L124 PetriNetUnfolderBase]: 7531/14748 cut-off events. [2025-03-09 06:21:39,343 INFO L125 PetriNetUnfolderBase]: For 57441/57441 co-relation queries the response was YES. [2025-03-09 06:21:39,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48302 conditions, 14748 events. 7531/14748 cut-off events. For 57441/57441 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 107154 event pairs, 1611 based on Foata normal form. 547/15254 useless extension candidates. Maximal degree in co-relation 46684. Up to 4101 conditions per place. [2025-03-09 06:21:39,425 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 200 selfloop transitions, 135 changer transitions 0/348 dead transitions. [2025-03-09 06:21:39,425 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 348 transitions, 3631 flow [2025-03-09 06:21:39,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-03-09 06:21:39,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2025-03-09 06:21:39,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 447 transitions. [2025-03-09 06:21:39,426 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5173611111111112 [2025-03-09 06:21:39,427 INFO L175 Difference]: Start difference. First operand has 158 places, 157 transitions, 1944 flow. Second operand 18 states and 447 transitions. [2025-03-09 06:21:39,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 348 transitions, 3631 flow [2025-03-09 06:21:39,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 348 transitions, 3325 flow, removed 117 selfloop flow, removed 7 redundant places. [2025-03-09 06:21:39,521 INFO L231 Difference]: Finished difference. Result has 159 places, 185 transitions, 2336 flow [2025-03-09 06:21:39,521 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1588, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2336, PETRI_PLACES=159, PETRI_TRANSITIONS=185} [2025-03-09 06:21:39,521 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 113 predicate places. [2025-03-09 06:21:39,521 INFO L471 AbstractCegarLoop]: Abstraction has has 159 places, 185 transitions, 2336 flow [2025-03-09 06:21:39,521 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 17.625) internal successors, (282), 16 states have internal predecessors, (282), 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) [2025-03-09 06:21:39,522 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:21:39,522 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:21:39,527 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-03-09 06:21:39,722 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:21:39,722 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-03-09 06:21:39,722 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:21:39,723 INFO L85 PathProgramCache]: Analyzing trace with hash -1953025358, now seen corresponding path program 1 times [2025-03-09 06:21:39,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:21:39,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830556062] [2025-03-09 06:21:39,723 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:21:39,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:21:39,729 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 43 statements into 1 equivalence classes. [2025-03-09 06:21:39,738 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 43 of 43 statements. [2025-03-09 06:21:39,738 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:21:39,738 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:21:39,835 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:21:39,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:21:39,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830556062] [2025-03-09 06:21:39,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830556062] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:21:39,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1758797735] [2025-03-09 06:21:39,835 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:21:39,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:21:39,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:21:39,837 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 06:21:39,839 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-03-09 06:21:39,895 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 43 statements into 1 equivalence classes. [2025-03-09 06:21:39,921 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 43 of 43 statements. [2025-03-09 06:21:39,922 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:21:39,922 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:21:39,923 INFO L256 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-09 06:21:39,924 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:21:39,978 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:21:39,979 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:21:40,059 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:21:40,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1758797735] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:21:40,059 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:21:40,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 16 [2025-03-09 06:21:40,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264699079] [2025-03-09 06:21:40,060 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:21:40,060 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-03-09 06:21:40,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:21:40,060 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-03-09 06:21:40,060 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2025-03-09 06:21:40,097 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2025-03-09 06:21:40,098 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 185 transitions, 2336 flow. Second operand has 18 states, 18 states have (on average 18.11111111111111) internal successors, (326), 18 states have internal predecessors, (326), 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) [2025-03-09 06:21:40,098 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:21:40,098 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2025-03-09 06:21:40,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:21:43,060 INFO L124 PetriNetUnfolderBase]: 12002/23461 cut-off events. [2025-03-09 06:21:43,060 INFO L125 PetriNetUnfolderBase]: For 76523/76523 co-relation queries the response was YES. [2025-03-09 06:21:43,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76896 conditions, 23461 events. 12002/23461 cut-off events. For 76523/76523 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 181374 event pairs, 2065 based on Foata normal form. 242/23638 useless extension candidates. Maximal degree in co-relation 74359. Up to 5548 conditions per place. [2025-03-09 06:21:43,574 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 350 selfloop transitions, 199 changer transitions 0/562 dead transitions. [2025-03-09 06:21:43,574 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 562 transitions, 6110 flow [2025-03-09 06:21:43,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2025-03-09 06:21:43,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2025-03-09 06:21:43,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 673 transitions. [2025-03-09 06:21:43,576 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5192901234567902 [2025-03-09 06:21:43,576 INFO L175 Difference]: Start difference. First operand has 159 places, 185 transitions, 2336 flow. Second operand 27 states and 673 transitions. [2025-03-09 06:21:43,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 562 transitions, 6110 flow [2025-03-09 06:21:43,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 562 transitions, 5710 flow, removed 162 selfloop flow, removed 8 redundant places. [2025-03-09 06:21:43,769 INFO L231 Difference]: Finished difference. Result has 187 places, 292 transitions, 4314 flow [2025-03-09 06:21:43,769 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2138, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=4314, PETRI_PLACES=187, PETRI_TRANSITIONS=292} [2025-03-09 06:21:43,769 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 141 predicate places. [2025-03-09 06:21:43,769 INFO L471 AbstractCegarLoop]: Abstraction has has 187 places, 292 transitions, 4314 flow [2025-03-09 06:21:43,770 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 18.11111111111111) internal successors, (326), 18 states have internal predecessors, (326), 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) [2025-03-09 06:21:43,770 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:21:43,770 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:21:43,777 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-03-09 06:21:43,970 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2025-03-09 06:21:43,970 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-03-09 06:21:43,971 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:21:43,971 INFO L85 PathProgramCache]: Analyzing trace with hash -991226511, now seen corresponding path program 2 times [2025-03-09 06:21:43,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:21:43,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536955890] [2025-03-09 06:21:43,971 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 06:21:43,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:21:43,980 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 56 statements into 2 equivalence classes. [2025-03-09 06:21:43,985 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 32 of 56 statements. [2025-03-09 06:21:43,985 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-09 06:21:43,985 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:21:44,030 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-03-09 06:21:44,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:21:44,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536955890] [2025-03-09 06:21:44,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536955890] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:21:44,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:21:44,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-09 06:21:44,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588271635] [2025-03-09 06:21:44,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:21:44,031 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-09 06:21:44,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:21:44,031 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-09 06:21:44,031 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-09 06:21:44,038 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2025-03-09 06:21:44,039 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 292 transitions, 4314 flow. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:21:44,039 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:21:44,039 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2025-03-09 06:21:44,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:21:47,067 INFO L124 PetriNetUnfolderBase]: 13531/25997 cut-off events. [2025-03-09 06:21:47,068 INFO L125 PetriNetUnfolderBase]: For 90420/90430 co-relation queries the response was YES. [2025-03-09 06:21:47,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87002 conditions, 25997 events. 13531/25997 cut-off events. For 90420/90430 co-relation queries the response was YES. Maximal size of possible extension queue 431. Compared 202720 event pairs, 5918 based on Foata normal form. 67/25891 useless extension candidates. Maximal degree in co-relation 85087. Up to 11818 conditions per place. [2025-03-09 06:21:47,306 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 143 selfloop transitions, 213 changer transitions 0/365 dead transitions. [2025-03-09 06:21:47,307 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 365 transitions, 5537 flow [2025-03-09 06:21:47,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-09 06:21:47,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-03-09 06:21:47,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 182 transitions. [2025-03-09 06:21:47,307 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4739583333333333 [2025-03-09 06:21:47,307 INFO L175 Difference]: Start difference. First operand has 187 places, 292 transitions, 4314 flow. Second operand 8 states and 182 transitions. [2025-03-09 06:21:47,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 365 transitions, 5537 flow [2025-03-09 06:21:47,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 365 transitions, 5486 flow, removed 22 selfloop flow, removed 3 redundant places. [2025-03-09 06:21:47,600 INFO L231 Difference]: Finished difference. Result has 191 places, 311 transitions, 5220 flow [2025-03-09 06:21:47,600 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4163, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=190, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5220, PETRI_PLACES=191, PETRI_TRANSITIONS=311} [2025-03-09 06:21:47,601 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 145 predicate places. [2025-03-09 06:21:47,601 INFO L471 AbstractCegarLoop]: Abstraction has has 191 places, 311 transitions, 5220 flow [2025-03-09 06:21:47,601 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:21:47,601 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:21:47,601 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:21:47,601 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2025-03-09 06:21:47,601 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-03-09 06:21:47,602 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:21:47,602 INFO L85 PathProgramCache]: Analyzing trace with hash 187608425, now seen corresponding path program 3 times [2025-03-09 06:21:47,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:21:47,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994652315] [2025-03-09 06:21:47,602 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-09 06:21:47,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:21:47,610 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 56 statements into 3 equivalence classes. [2025-03-09 06:21:47,613 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 32 of 56 statements. [2025-03-09 06:21:47,613 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-03-09 06:21:47,614 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:21:47,650 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-03-09 06:21:47,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:21:47,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994652315] [2025-03-09 06:21:47,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994652315] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:21:47,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:21:47,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 06:21:47,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514036533] [2025-03-09 06:21:47,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:21:47,650 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 06:21:47,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:21:47,651 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 06:21:47,651 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 06:21:47,653 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 48 [2025-03-09 06:21:47,653 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 311 transitions, 5220 flow. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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) [2025-03-09 06:21:47,653 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:21:47,653 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 48 [2025-03-09 06:21:47,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:21:50,375 INFO L124 PetriNetUnfolderBase]: 9132/18075 cut-off events. [2025-03-09 06:21:50,375 INFO L125 PetriNetUnfolderBase]: For 88927/88927 co-relation queries the response was YES. [2025-03-09 06:21:50,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64666 conditions, 18075 events. 9132/18075 cut-off events. For 88927/88927 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 134200 event pairs, 3861 based on Foata normal form. 8/18028 useless extension candidates. Maximal degree in co-relation 64613. Up to 14819 conditions per place. [2025-03-09 06:21:50,516 INFO L140 encePairwiseOnDemand]: 45/48 looper letters, 222 selfloop transitions, 2 changer transitions 0/250 dead transitions. [2025-03-09 06:21:50,516 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 250 transitions, 4408 flow [2025-03-09 06:21:50,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 06:21:50,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-09 06:21:50,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 97 transitions. [2025-03-09 06:21:50,519 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6736111111111112 [2025-03-09 06:21:50,519 INFO L175 Difference]: Start difference. First operand has 191 places, 311 transitions, 5220 flow. Second operand 3 states and 97 transitions. [2025-03-09 06:21:50,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 250 transitions, 4408 flow [2025-03-09 06:21:50,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 250 transitions, 4176 flow, removed 60 selfloop flow, removed 12 redundant places. [2025-03-09 06:21:50,749 INFO L231 Difference]: Finished difference. Result has 173 places, 237 transitions, 3687 flow [2025-03-09 06:21:50,749 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3675, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=3687, PETRI_PLACES=173, PETRI_TRANSITIONS=237} [2025-03-09 06:21:50,749 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 127 predicate places. [2025-03-09 06:21:50,749 INFO L471 AbstractCegarLoop]: Abstraction has has 173 places, 237 transitions, 3687 flow [2025-03-09 06:21:50,749 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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) [2025-03-09 06:21:50,749 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:21:50,750 INFO L206 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1] [2025-03-09 06:21:50,750 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2025-03-09 06:21:50,750 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-03-09 06:21:50,750 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:21:50,750 INFO L85 PathProgramCache]: Analyzing trace with hash 1305571810, now seen corresponding path program 2 times [2025-03-09 06:21:50,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:21:50,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386714799] [2025-03-09 06:21:50,750 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 06:21:50,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:21:50,759 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 64 statements into 2 equivalence classes. [2025-03-09 06:21:50,775 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 64 of 64 statements. [2025-03-09 06:21:50,775 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 06:21:50,775 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:21:51,125 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:21:51,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:21:51,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386714799] [2025-03-09 06:21:51,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386714799] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:21:51,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [623484290] [2025-03-09 06:21:51,126 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 06:21:51,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:21:51,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:21:51,129 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 06:21:51,130 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-03-09 06:21:51,197 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 64 statements into 2 equivalence classes. [2025-03-09 06:21:51,235 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 64 of 64 statements. [2025-03-09 06:21:51,235 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 06:21:51,235 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:21:51,237 INFO L256 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-03-09 06:21:51,238 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:21:51,324 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:21:51,324 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:21:51,506 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:21:51,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [623484290] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:21:51,507 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:21:51,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 26 [2025-03-09 06:21:51,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164750771] [2025-03-09 06:21:51,507 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:21:51,507 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2025-03-09 06:21:51,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:21:51,507 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2025-03-09 06:21:51,508 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=547, Unknown=0, NotChecked=0, Total=756 [2025-03-09 06:21:51,526 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2025-03-09 06:21:51,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 237 transitions, 3687 flow. Second operand has 28 states, 28 states have (on average 19.607142857142858) internal successors, (549), 28 states have internal predecessors, (549), 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) [2025-03-09 06:21:51,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:21:51,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2025-03-09 06:21:51,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:21:54,094 INFO L124 PetriNetUnfolderBase]: 9834/19326 cut-off events. [2025-03-09 06:21:54,094 INFO L125 PetriNetUnfolderBase]: For 87483/87483 co-relation queries the response was YES. [2025-03-09 06:21:54,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68538 conditions, 19326 events. 9834/19326 cut-off events. For 87483/87483 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 141870 event pairs, 3541 based on Foata normal form. 54/19317 useless extension candidates. Maximal degree in co-relation 68489. Up to 11201 conditions per place. [2025-03-09 06:21:54,227 INFO L140 encePairwiseOnDemand]: 42/48 looper letters, 330 selfloop transitions, 49 changer transitions 11/409 dead transitions. [2025-03-09 06:21:54,227 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 409 transitions, 5301 flow [2025-03-09 06:21:54,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-03-09 06:21:54,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-03-09 06:21:54,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 405 transitions. [2025-03-09 06:21:54,228 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6490384615384616 [2025-03-09 06:21:54,228 INFO L175 Difference]: Start difference. First operand has 173 places, 237 transitions, 3687 flow. Second operand 13 states and 405 transitions. [2025-03-09 06:21:54,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 409 transitions, 5301 flow [2025-03-09 06:21:54,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 409 transitions, 5269 flow, removed 9 selfloop flow, removed 5 redundant places. [2025-03-09 06:21:54,438 INFO L231 Difference]: Finished difference. Result has 182 places, 241 transitions, 3871 flow [2025-03-09 06:21:54,439 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3643, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3871, PETRI_PLACES=182, PETRI_TRANSITIONS=241} [2025-03-09 06:21:54,439 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 136 predicate places. [2025-03-09 06:21:54,439 INFO L471 AbstractCegarLoop]: Abstraction has has 182 places, 241 transitions, 3871 flow [2025-03-09 06:21:54,439 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 19.607142857142858) internal successors, (549), 28 states have internal predecessors, (549), 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) [2025-03-09 06:21:54,440 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:21:54,440 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:21:54,446 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2025-03-09 06:21:54,641 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2025-03-09 06:21:54,641 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-03-09 06:21:54,641 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:21:54,641 INFO L85 PathProgramCache]: Analyzing trace with hash -967996526, now seen corresponding path program 2 times [2025-03-09 06:21:54,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:21:54,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583922486] [2025-03-09 06:21:54,642 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 06:21:54,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:21:54,656 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 65 statements into 2 equivalence classes. [2025-03-09 06:21:54,694 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 65 of 65 statements. [2025-03-09 06:21:54,695 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 06:21:54,695 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:21:54,900 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:21:54,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:21:54,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583922486] [2025-03-09 06:21:54,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583922486] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:21:54,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [54606902] [2025-03-09 06:21:54,901 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 06:21:54,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:21:54,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:21:54,903 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 06:21:54,904 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-03-09 06:21:54,975 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 65 statements into 2 equivalence classes. [2025-03-09 06:21:55,014 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 65 of 65 statements. [2025-03-09 06:21:55,014 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 06:21:55,014 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:21:55,016 INFO L256 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-03-09 06:21:55,017 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:21:55,081 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:21:55,081 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:21:55,209 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:21:55,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [54606902] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:21:55,209 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:21:55,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 20 [2025-03-09 06:21:55,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945173561] [2025-03-09 06:21:55,210 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:21:55,210 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-03-09 06:21:55,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:21:55,210 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-03-09 06:21:55,210 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2025-03-09 06:21:55,233 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2025-03-09 06:21:55,233 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 241 transitions, 3871 flow. Second operand has 22 states, 22 states have (on average 18.09090909090909) internal successors, (398), 22 states have internal predecessors, (398), 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) [2025-03-09 06:21:55,233 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:21:55,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2025-03-09 06:21:55,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:21:59,953 INFO L124 PetriNetUnfolderBase]: 16535/32245 cut-off events. [2025-03-09 06:21:59,953 INFO L125 PetriNetUnfolderBase]: For 153468/153468 co-relation queries the response was YES. [2025-03-09 06:22:00,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114199 conditions, 32245 events. 16535/32245 cut-off events. For 153468/153468 co-relation queries the response was YES. Maximal size of possible extension queue 427. Compared 252532 event pairs, 2849 based on Foata normal form. 276/32428 useless extension candidates. Maximal degree in co-relation 114152. Up to 6214 conditions per place. [2025-03-09 06:22:00,281 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 405 selfloop transitions, 284 changer transitions 2/706 dead transitions. [2025-03-09 06:22:00,281 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 706 transitions, 9164 flow [2025-03-09 06:22:00,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2025-03-09 06:22:00,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2025-03-09 06:22:00,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 735 transitions. [2025-03-09 06:22:00,282 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.546875 [2025-03-09 06:22:00,283 INFO L175 Difference]: Start difference. First operand has 182 places, 241 transitions, 3871 flow. Second operand 28 states and 735 transitions. [2025-03-09 06:22:00,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 706 transitions, 9164 flow [2025-03-09 06:22:00,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 706 transitions, 8870 flow, removed 0 selfloop flow, removed 10 redundant places. [2025-03-09 06:22:00,651 INFO L231 Difference]: Finished difference. Result has 210 places, 392 transitions, 7248 flow [2025-03-09 06:22:00,651 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3664, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=153, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=7248, PETRI_PLACES=210, PETRI_TRANSITIONS=392} [2025-03-09 06:22:00,651 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 164 predicate places. [2025-03-09 06:22:00,651 INFO L471 AbstractCegarLoop]: Abstraction has has 210 places, 392 transitions, 7248 flow [2025-03-09 06:22:00,652 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 18.09090909090909) internal successors, (398), 22 states have internal predecessors, (398), 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) [2025-03-09 06:22:00,652 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:22:00,652 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:22:00,661 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2025-03-09 06:22:00,852 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2025-03-09 06:22:00,853 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-03-09 06:22:00,853 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:22:00,853 INFO L85 PathProgramCache]: Analyzing trace with hash -550366714, now seen corresponding path program 4 times [2025-03-09 06:22:00,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:22:00,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136085221] [2025-03-09 06:22:00,853 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-09 06:22:00,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:22:00,865 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 68 statements into 2 equivalence classes. [2025-03-09 06:22:00,874 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 68 of 68 statements. [2025-03-09 06:22:00,874 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-09 06:22:00,874 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:22:01,181 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:22:01,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:22:01,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136085221] [2025-03-09 06:22:01,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136085221] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:22:01,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1488615525] [2025-03-09 06:22:01,182 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-09 06:22:01,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:22:01,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:22:01,184 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 06:22:01,186 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-03-09 06:22:01,252 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 68 statements into 2 equivalence classes. [2025-03-09 06:22:01,289 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 68 of 68 statements. [2025-03-09 06:22:01,289 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-09 06:22:01,289 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:22:01,291 INFO L256 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-03-09 06:22:01,292 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:22:01,365 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:22:01,365 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:22:01,510 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:22:01,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1488615525] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:22:01,510 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:22:01,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 24 [2025-03-09 06:22:01,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333986083] [2025-03-09 06:22:01,510 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:22:01,511 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-03-09 06:22:01,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:22:01,511 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-03-09 06:22:01,511 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=499, Unknown=0, NotChecked=0, Total=650 [2025-03-09 06:22:01,524 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2025-03-09 06:22:01,525 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 392 transitions, 7248 flow. Second operand has 26 states, 26 states have (on average 17.384615384615383) internal successors, (452), 26 states have internal predecessors, (452), 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) [2025-03-09 06:22:01,525 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:22:01,525 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2025-03-09 06:22:01,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:22:10,184 INFO L124 PetriNetUnfolderBase]: 26773/50601 cut-off events. [2025-03-09 06:22:10,184 INFO L125 PetriNetUnfolderBase]: For 251241/251241 co-relation queries the response was YES. [2025-03-09 06:22:10,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 183334 conditions, 50601 events. 26773/50601 cut-off events. For 251241/251241 co-relation queries the response was YES. Maximal size of possible extension queue 538. Compared 408607 event pairs, 4902 based on Foata normal form. 324/50786 useless extension candidates. Maximal degree in co-relation 183277. Up to 11465 conditions per place. [2025-03-09 06:22:10,839 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 479 selfloop transitions, 498 changer transitions 2/988 dead transitions. [2025-03-09 06:22:10,839 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 988 transitions, 15242 flow [2025-03-09 06:22:10,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2025-03-09 06:22:10,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2025-03-09 06:22:10,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 936 transitions. [2025-03-09 06:22:10,840 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.47560975609756095 [2025-03-09 06:22:10,841 INFO L175 Difference]: Start difference. First operand has 210 places, 392 transitions, 7248 flow. Second operand 41 states and 936 transitions. [2025-03-09 06:22:10,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 988 transitions, 15242 flow [2025-03-09 06:22:12,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 988 transitions, 15046 flow, removed 93 selfloop flow, removed 4 redundant places. [2025-03-09 06:22:12,052 INFO L231 Difference]: Finished difference. Result has 257 places, 615 transitions, 12958 flow [2025-03-09 06:22:12,052 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7098, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=392, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=287, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=12958, PETRI_PLACES=257, PETRI_TRANSITIONS=615} [2025-03-09 06:22:12,053 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 211 predicate places. [2025-03-09 06:22:12,053 INFO L471 AbstractCegarLoop]: Abstraction has has 257 places, 615 transitions, 12958 flow [2025-03-09 06:22:12,053 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 17.384615384615383) internal successors, (452), 26 states have internal predecessors, (452), 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) [2025-03-09 06:22:12,053 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:22:12,053 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:22:12,059 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-03-09 06:22:12,253 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2025-03-09 06:22:12,253 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-03-09 06:22:12,254 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:22:12,254 INFO L85 PathProgramCache]: Analyzing trace with hash 56662911, now seen corresponding path program 1 times [2025-03-09 06:22:12,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:22:12,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470650385] [2025-03-09 06:22:12,254 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:22:12,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:22:12,265 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 77 statements into 1 equivalence classes. [2025-03-09 06:22:12,273 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 77 of 77 statements. [2025-03-09 06:22:12,273 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:22:12,273 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:22:12,435 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-09 06:22:12,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:22:12,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470650385] [2025-03-09 06:22:12,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470650385] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:22:12,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1995136121] [2025-03-09 06:22:12,435 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:22:12,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:22:12,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:22:12,437 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 06:22:12,439 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-03-09 06:22:12,512 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 77 statements into 1 equivalence classes. [2025-03-09 06:22:12,552 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 77 of 77 statements. [2025-03-09 06:22:12,553 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:22:12,553 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:22:12,555 INFO L256 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-03-09 06:22:12,556 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:22:12,638 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-09 06:22:12,638 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:22:12,786 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-09 06:22:12,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1995136121] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:22:12,786 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:22:12,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2025-03-09 06:22:12,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743661583] [2025-03-09 06:22:12,786 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:22:12,787 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-03-09 06:22:12,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:22:12,787 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-03-09 06:22:12,787 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=358, Unknown=0, NotChecked=0, Total=462 [2025-03-09 06:22:12,815 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2025-03-09 06:22:12,816 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 615 transitions, 12958 flow. Second operand has 22 states, 22 states have (on average 18.545454545454547) internal successors, (408), 22 states have internal predecessors, (408), 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) [2025-03-09 06:22:12,816 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:22:12,816 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2025-03-09 06:22:12,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand