./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/pthread/queue_longest.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8fc3dc66 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/queue_longest.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5fb3c623242420f3b3352ce2377df781fcc1efd56f82dd0011f9620e127821b3 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 19:24:01,315 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 19:24:01,373 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-03-17 19:24:01,378 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 19:24:01,380 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 19:24:01,400 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 19:24:01,401 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 19:24:01,401 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 19:24:01,401 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 19:24:01,401 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 19:24:01,401 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 19:24:01,401 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 19:24:01,401 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 19:24:01,402 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 19:24:01,403 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 19:24:01,403 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 19:24:01,403 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 19:24:01,403 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 19:24:01,404 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 19:24:01,404 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 19:24:01,404 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 19:24:01,404 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 19:24:01,404 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 19:24:01,404 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 19:24:01,404 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-03-17 19:24:01,404 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-17 19:24:01,404 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 19:24:01,404 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 19:24:01,404 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 19:24:01,404 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 19:24:01,405 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 19:24:01,405 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 19:24:01,405 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 19:24:01,405 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 19:24:01,405 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 19:24:01,405 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 19:24:01,405 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 19:24:01,405 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 19:24:01,405 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 19:24:01,406 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 19:24:01,406 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 19:24:01,406 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 19:24:01,406 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 19:24:01,406 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 19:24:01,406 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 19:24:01,406 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 -> 5fb3c623242420f3b3352ce2377df781fcc1efd56f82dd0011f9620e127821b3 [2025-03-17 19:24:01,613 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 19:24:01,618 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 19:24:01,620 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 19:24:01,621 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 19:24:01,621 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 19:24:01,622 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/queue_longest.i [2025-03-17 19:24:02,736 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0234489f4/11c14c814d544b3abb7d8b5616d30382/FLAGf1959bada [2025-03-17 19:24:02,996 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 19:24:02,997 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/queue_longest.i [2025-03-17 19:24:03,010 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0234489f4/11c14c814d544b3abb7d8b5616d30382/FLAGf1959bada [2025-03-17 19:24:03,288 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0234489f4/11c14c814d544b3abb7d8b5616d30382 [2025-03-17 19:24:03,289 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 19:24:03,290 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 19:24:03,291 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 19:24:03,291 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 19:24:03,294 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 19:24:03,295 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 07:24:03" (1/1) ... [2025-03-17 19:24:03,295 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@659b9ad3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:24:03, skipping insertion in model container [2025-03-17 19:24:03,295 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 07:24:03" (1/1) ... [2025-03-17 19:24:03,336 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 19:24:03,726 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 19:24:03,777 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 19:24:03,834 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 19:24:03,938 INFO L204 MainTranslator]: Completed translation [2025-03-17 19:24:03,939 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:24:03 WrapperNode [2025-03-17 19:24:03,939 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 19:24:03,940 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 19:24:03,940 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 19:24:03,940 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 19:24:03,944 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:24:03" (1/1) ... [2025-03-17 19:24:03,972 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:24:03" (1/1) ... [2025-03-17 19:24:04,041 INFO L138 Inliner]: procedures = 274, calls = 1659, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 1858 [2025-03-17 19:24:04,041 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 19:24:04,042 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 19:24:04,042 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 19:24:04,042 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 19:24:04,050 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:24:03" (1/1) ... [2025-03-17 19:24:04,051 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:24:03" (1/1) ... [2025-03-17 19:24:04,065 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:24:03" (1/1) ... [2025-03-17 19:24:04,107 INFO L175 MemorySlicer]: Split 1644 memory accesses to 4 slices as follows [2, 5, 803, 834]. 51 percent of accesses are in the largest equivalence class. The 1610 initializations are split as follows [2, 5, 800, 803]. The 16 writes are split as follows [0, 0, 2, 14]. [2025-03-17 19:24:04,107 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:24:03" (1/1) ... [2025-03-17 19:24:04,107 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:24:03" (1/1) ... [2025-03-17 19:24:04,147 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:24:03" (1/1) ... [2025-03-17 19:24:04,151 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:24:03" (1/1) ... [2025-03-17 19:24:04,158 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:24:03" (1/1) ... [2025-03-17 19:24:04,164 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:24:03" (1/1) ... [2025-03-17 19:24:04,173 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 19:24:04,174 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 19:24:04,175 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 19:24:04,175 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 19:24:04,176 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:24:03" (1/1) ... [2025-03-17 19:24:04,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 19:24:04,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:24:04,204 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) [2025-03-17 19:24:04,209 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 [2025-03-17 19:24:04,223 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2025-03-17 19:24:04,223 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2025-03-17 19:24:04,223 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2025-03-17 19:24:04,223 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2025-03-17 19:24:04,223 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-03-17 19:24:04,223 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-17 19:24:04,223 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-17 19:24:04,223 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-17 19:24:04,223 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-03-17 19:24:04,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-17 19:24:04,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-17 19:24:04,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-17 19:24:04,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-03-17 19:24:04,224 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-03-17 19:24:04,224 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 19:24:04,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-17 19:24:04,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-17 19:24:04,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-17 19:24:04,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-17 19:24:04,225 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 19:24:04,225 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 19:24:04,226 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-17 19:24:04,355 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 19:24:04,357 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 19:24:05,997 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-17 19:24:05,998 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 19:24:28,634 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 19:24:28,635 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 19:24:28,635 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 07:24:28 BoogieIcfgContainer [2025-03-17 19:24:28,635 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 19:24:28,636 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 19:24:28,637 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 19:24:28,640 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 19:24:28,640 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 07:24:03" (1/3) ... [2025-03-17 19:24:28,640 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7154e76a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 07:24:28, skipping insertion in model container [2025-03-17 19:24:28,641 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:24:03" (2/3) ... [2025-03-17 19:24:28,641 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7154e76a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 07:24:28, skipping insertion in model container [2025-03-17 19:24:28,641 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 07:24:28" (3/3) ... [2025-03-17 19:24:28,642 INFO L128 eAbstractionObserver]: Analyzing ICFG queue_longest.i [2025-03-17 19:24:28,653 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 19:24:28,655 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG queue_longest.i that has 3 procedures, 75 locations, 1 initial locations, 2 loop locations, and 18 error locations. [2025-03-17 19:24:28,655 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-17 19:24:28,738 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-03-17 19:24:28,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 81 places, 83 transitions, 180 flow [2025-03-17 19:24:28,834 INFO L124 PetriNetUnfolderBase]: 9/81 cut-off events. [2025-03-17 19:24:28,837 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-03-17 19:24:28,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 81 events. 9/81 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 204 event pairs, 0 based on Foata normal form. 0/54 useless extension candidates. Maximal degree in co-relation 78. Up to 2 conditions per place. [2025-03-17 19:24:28,842 INFO L82 GeneralOperation]: Start removeDead. Operand has 81 places, 83 transitions, 180 flow [2025-03-17 19:24:28,844 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 77 places, 79 transitions, 167 flow [2025-03-17 19:24:28,853 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 19:24:28,862 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;@1645466e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 19:24:28,862 INFO L334 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2025-03-17 19:24:28,904 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 19:24:28,905 INFO L124 PetriNetUnfolderBase]: 0/12 cut-off events. [2025-03-17 19:24:28,905 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 19:24:28,905 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:24:28,905 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2025-03-17 19:24:28,906 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2025-03-17 19:24:28,909 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:24:28,910 INFO L85 PathProgramCache]: Analyzing trace with hash -1888831995, now seen corresponding path program 1 times [2025-03-17 19:24:28,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:24:28,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570099379] [2025-03-17 19:24:28,916 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:24:28,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:24:29,039 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-17 19:24:29,353 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-17 19:24:29,353 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:24:29,353 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:24:30,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:24:30,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:24:30,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570099379] [2025-03-17 19:24:30,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570099379] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:24:30,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:24:30,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 19:24:30,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511971350] [2025-03-17 19:24:30,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:24:30,945 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:24:30,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:24:30,969 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:24:30,970 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:24:30,994 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 83 [2025-03-17 19:24:30,996 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 79 transitions, 167 flow. Second operand has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:24:30,997 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:24:30,997 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 83 [2025-03-17 19:24:30,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:24:31,789 INFO L124 PetriNetUnfolderBase]: 1233/2525 cut-off events. [2025-03-17 19:24:31,789 INFO L125 PetriNetUnfolderBase]: For 57/57 co-relation queries the response was YES. [2025-03-17 19:24:31,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4503 conditions, 2525 events. 1233/2525 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 15697 event pairs, 205 based on Foata normal form. 48/2196 useless extension candidates. Maximal degree in co-relation 4434. Up to 1608 conditions per place. [2025-03-17 19:24:31,820 INFO L140 encePairwiseOnDemand]: 75/83 looper letters, 73 selfloop transitions, 6 changer transitions 0/109 dead transitions. [2025-03-17 19:24:31,820 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 109 transitions, 391 flow [2025-03-17 19:24:31,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:24:31,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:24:31,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 209 transitions. [2025-03-17 19:24:31,831 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6295180722891566 [2025-03-17 19:24:31,832 INFO L175 Difference]: Start difference. First operand has 77 places, 79 transitions, 167 flow. Second operand 4 states and 209 transitions. [2025-03-17 19:24:31,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 109 transitions, 391 flow [2025-03-17 19:24:31,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 109 transitions, 384 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-17 19:24:31,842 INFO L231 Difference]: Finished difference. Result has 80 places, 82 transitions, 202 flow [2025-03-17 19:24:31,844 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=202, PETRI_PLACES=80, PETRI_TRANSITIONS=82} [2025-03-17 19:24:31,847 INFO L279 CegarLoopForPetriNet]: 77 programPoint places, 3 predicate places. [2025-03-17 19:24:31,848 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 82 transitions, 202 flow [2025-03-17 19:24:31,848 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:24:31,848 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:24:31,848 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:24:31,848 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-17 19:24:31,849 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2025-03-17 19:24:31,849 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:24:31,849 INFO L85 PathProgramCache]: Analyzing trace with hash 1575754117, now seen corresponding path program 1 times [2025-03-17 19:24:31,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:24:31,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768381338] [2025-03-17 19:24:31,850 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:24:31,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:24:31,889 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-17 19:24:31,985 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-17 19:24:31,986 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:24:31,986 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:24:33,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:24:33,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:24:33,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768381338] [2025-03-17 19:24:33,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768381338] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:24:33,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:24:33,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 19:24:33,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282765640] [2025-03-17 19:24:33,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:24:33,292 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:24:33,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:24:33,292 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:24:33,292 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:24:33,315 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 83 [2025-03-17 19:24:33,316 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 82 transitions, 202 flow. Second operand has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:24:33,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:24:33,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 83 [2025-03-17 19:24:33,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:24:33,994 INFO L124 PetriNetUnfolderBase]: 1242/2581 cut-off events. [2025-03-17 19:24:33,994 INFO L125 PetriNetUnfolderBase]: For 452/455 co-relation queries the response was YES. [2025-03-17 19:24:33,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4890 conditions, 2581 events. 1242/2581 cut-off events. For 452/455 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 16503 event pairs, 264 based on Foata normal form. 38/2287 useless extension candidates. Maximal degree in co-relation 4354. Up to 1757 conditions per place. [2025-03-17 19:24:34,009 INFO L140 encePairwiseOnDemand]: 78/83 looper letters, 81 selfloop transitions, 6 changer transitions 0/117 dead transitions. [2025-03-17 19:24:34,009 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 117 transitions, 456 flow [2025-03-17 19:24:34,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 19:24:34,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-17 19:24:34,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 249 transitions. [2025-03-17 19:24:34,012 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6 [2025-03-17 19:24:34,012 INFO L175 Difference]: Start difference. First operand has 80 places, 82 transitions, 202 flow. Second operand 5 states and 249 transitions. [2025-03-17 19:24:34,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 117 transitions, 456 flow [2025-03-17 19:24:34,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 117 transitions, 450 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 19:24:34,018 INFO L231 Difference]: Finished difference. Result has 84 places, 83 transitions, 219 flow [2025-03-17 19:24:34,018 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=193, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=219, PETRI_PLACES=84, PETRI_TRANSITIONS=83} [2025-03-17 19:24:34,020 INFO L279 CegarLoopForPetriNet]: 77 programPoint places, 7 predicate places. [2025-03-17 19:24:34,020 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 83 transitions, 219 flow [2025-03-17 19:24:34,020 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:24:34,020 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:24:34,020 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:24:34,020 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-17 19:24:34,020 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2025-03-17 19:24:34,020 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:24:34,020 INFO L85 PathProgramCache]: Analyzing trace with hash -1823624855, now seen corresponding path program 1 times [2025-03-17 19:24:34,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:24:34,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320927021] [2025-03-17 19:24:34,021 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:24:34,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:24:34,055 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-17 19:24:34,132 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-17 19:24:34,132 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:24:34,132 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:24:35,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:24:35,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:24:35,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320927021] [2025-03-17 19:24:35,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320927021] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:24:35,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:24:35,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:24:35,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733444826] [2025-03-17 19:24:35,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:24:35,364 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 19:24:35,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:24:35,364 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 19:24:35,364 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 19:24:35,381 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 83 [2025-03-17 19:24:35,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 83 transitions, 219 flow. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:24:35,381 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:24:35,381 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 83 [2025-03-17 19:24:35,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:24:36,683 INFO L124 PetriNetUnfolderBase]: 1442/2909 cut-off events. [2025-03-17 19:24:36,683 INFO L125 PetriNetUnfolderBase]: For 544/560 co-relation queries the response was YES. [2025-03-17 19:24:36,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5605 conditions, 2909 events. 1442/2909 cut-off events. For 544/560 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 18752 event pairs, 222 based on Foata normal form. 40/2533 useless extension candidates. Maximal degree in co-relation 5043. Up to 1637 conditions per place. [2025-03-17 19:24:36,699 INFO L140 encePairwiseOnDemand]: 69/83 looper letters, 107 selfloop transitions, 17 changer transitions 0/154 dead transitions. [2025-03-17 19:24:36,700 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 154 transitions, 631 flow [2025-03-17 19:24:36,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-17 19:24:36,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-17 19:24:36,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 349 transitions. [2025-03-17 19:24:36,703 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6006884681583476 [2025-03-17 19:24:36,703 INFO L175 Difference]: Start difference. First operand has 84 places, 83 transitions, 219 flow. Second operand 7 states and 349 transitions. [2025-03-17 19:24:36,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 154 transitions, 631 flow [2025-03-17 19:24:36,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 154 transitions, 617 flow, removed 1 selfloop flow, removed 3 redundant places. [2025-03-17 19:24:36,708 INFO L231 Difference]: Finished difference. Result has 91 places, 93 transitions, 317 flow [2025-03-17 19:24:36,708 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=205, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=317, PETRI_PLACES=91, PETRI_TRANSITIONS=93} [2025-03-17 19:24:36,708 INFO L279 CegarLoopForPetriNet]: 77 programPoint places, 14 predicate places. [2025-03-17 19:24:36,708 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 93 transitions, 317 flow [2025-03-17 19:24:36,709 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:24:36,709 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:24:36,709 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:24:36,709 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-17 19:24:36,709 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2025-03-17 19:24:36,709 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:24:36,709 INFO L85 PathProgramCache]: Analyzing trace with hash 499917802, now seen corresponding path program 1 times [2025-03-17 19:24:36,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:24:36,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660347130] [2025-03-17 19:24:36,709 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:24:36,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:24:36,745 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-17 19:24:36,763 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-17 19:24:36,764 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:24:36,764 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:24:36,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:24:36,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:24:36,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660347130] [2025-03-17 19:24:36,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660347130] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:24:36,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:24:36,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 19:24:36,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352387318] [2025-03-17 19:24:36,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:24:36,960 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 19:24:36,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:24:36,961 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 19:24:36,961 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 19:24:36,966 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 83 [2025-03-17 19:24:36,967 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 93 transitions, 317 flow. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:24:36,967 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:24:36,967 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 83 [2025-03-17 19:24:36,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:24:37,481 INFO L124 PetriNetUnfolderBase]: 1085/2491 cut-off events. [2025-03-17 19:24:37,482 INFO L125 PetriNetUnfolderBase]: For 673/673 co-relation queries the response was YES. [2025-03-17 19:24:37,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4910 conditions, 2491 events. 1085/2491 cut-off events. For 673/673 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 14714 event pairs, 502 based on Foata normal form. 43/2268 useless extension candidates. Maximal degree in co-relation 4780. Up to 925 conditions per place. [2025-03-17 19:24:37,492 INFO L140 encePairwiseOnDemand]: 79/83 looper letters, 67 selfloop transitions, 3 changer transitions 0/101 dead transitions. [2025-03-17 19:24:37,493 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 101 transitions, 433 flow [2025-03-17 19:24:37,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 19:24:37,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 19:24:37,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 175 transitions. [2025-03-17 19:24:37,494 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7028112449799196 [2025-03-17 19:24:37,494 INFO L175 Difference]: Start difference. First operand has 91 places, 93 transitions, 317 flow. Second operand 3 states and 175 transitions. [2025-03-17 19:24:37,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 101 transitions, 433 flow [2025-03-17 19:24:37,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 101 transitions, 387 flow, removed 7 selfloop flow, removed 12 redundant places. [2025-03-17 19:24:37,501 INFO L231 Difference]: Finished difference. Result has 78 places, 79 transitions, 205 flow [2025-03-17 19:24:37,501 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=205, PETRI_PLACES=78, PETRI_TRANSITIONS=79} [2025-03-17 19:24:37,502 INFO L279 CegarLoopForPetriNet]: 77 programPoint places, 1 predicate places. [2025-03-17 19:24:37,502 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 79 transitions, 205 flow [2025-03-17 19:24:37,503 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:24:37,503 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:24:37,503 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:24:37,503 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-17 19:24:37,503 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2025-03-17 19:24:37,504 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:24:37,504 INFO L85 PathProgramCache]: Analyzing trace with hash -697791832, now seen corresponding path program 1 times [2025-03-17 19:24:37,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:24:37,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928417512] [2025-03-17 19:24:37,504 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:24:37,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:24:37,539 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-17 19:24:37,632 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-17 19:24:37,632 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:24:37,632 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:24:38,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:24:38,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:24:38,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928417512] [2025-03-17 19:24:38,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928417512] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:24:38,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:24:38,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:24:38,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049418251] [2025-03-17 19:24:38,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:24:38,614 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 19:24:38,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:24:38,615 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 19:24:38,615 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 19:24:38,636 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 83 [2025-03-17 19:24:38,636 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 79 transitions, 205 flow. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:24:38,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:24:38,637 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 83 [2025-03-17 19:24:38,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:24:39,398 INFO L124 PetriNetUnfolderBase]: 1207/2573 cut-off events. [2025-03-17 19:24:39,398 INFO L125 PetriNetUnfolderBase]: For 258/258 co-relation queries the response was YES. [2025-03-17 19:24:39,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5051 conditions, 2573 events. 1207/2573 cut-off events. For 258/258 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 14578 event pairs, 166 based on Foata normal form. 14/2329 useless extension candidates. Maximal degree in co-relation 4462. Up to 1733 conditions per place. [2025-03-17 19:24:39,411 INFO L140 encePairwiseOnDemand]: 76/83 looper letters, 80 selfloop transitions, 6 changer transitions 0/114 dead transitions. [2025-03-17 19:24:39,412 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 114 transitions, 455 flow [2025-03-17 19:24:39,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 19:24:39,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 19:24:39,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 275 transitions. [2025-03-17 19:24:39,413 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5522088353413654 [2025-03-17 19:24:39,413 INFO L175 Difference]: Start difference. First operand has 78 places, 79 transitions, 205 flow. Second operand 6 states and 275 transitions. [2025-03-17 19:24:39,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 114 transitions, 455 flow [2025-03-17 19:24:39,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 114 transitions, 445 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-17 19:24:39,416 INFO L231 Difference]: Finished difference. Result has 80 places, 78 transitions, 205 flow [2025-03-17 19:24:39,416 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=193, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=205, PETRI_PLACES=80, PETRI_TRANSITIONS=78} [2025-03-17 19:24:39,417 INFO L279 CegarLoopForPetriNet]: 77 programPoint places, 3 predicate places. [2025-03-17 19:24:39,417 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 78 transitions, 205 flow [2025-03-17 19:24:39,417 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:24:39,417 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:24:39,417 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:24:39,417 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-17 19:24:39,417 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2025-03-17 19:24:39,418 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:24:39,418 INFO L85 PathProgramCache]: Analyzing trace with hash -615236243, now seen corresponding path program 1 times [2025-03-17 19:24:39,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:24:39,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796402656] [2025-03-17 19:24:39,418 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:24:39,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:24:39,451 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-17 19:24:39,471 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-17 19:24:39,471 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:24:39,471 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:24:39,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:24:39,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:24:39,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796402656] [2025-03-17 19:24:39,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796402656] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:24:39,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:24:39,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:24:39,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479553353] [2025-03-17 19:24:39,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:24:39,614 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:24:39,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:24:39,615 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:24:39,615 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:24:39,621 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 83 [2025-03-17 19:24:39,622 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 78 transitions, 205 flow. Second operand has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:24:39,622 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:24:39,622 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 83 [2025-03-17 19:24:39,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:24:40,574 INFO L124 PetriNetUnfolderBase]: 2004/4379 cut-off events. [2025-03-17 19:24:40,574 INFO L125 PetriNetUnfolderBase]: For 605/605 co-relation queries the response was YES. [2025-03-17 19:24:40,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8392 conditions, 4379 events. 2004/4379 cut-off events. For 605/605 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 28810 event pairs, 1018 based on Foata normal form. 146/4088 useless extension candidates. Maximal degree in co-relation 7771. Up to 2101 conditions per place. [2025-03-17 19:24:40,613 INFO L140 encePairwiseOnDemand]: 77/83 looper letters, 119 selfloop transitions, 3 changer transitions 0/150 dead transitions. [2025-03-17 19:24:40,613 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 150 transitions, 663 flow [2025-03-17 19:24:40,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:24:40,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:24:40,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 251 transitions. [2025-03-17 19:24:40,615 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7560240963855421 [2025-03-17 19:24:40,615 INFO L175 Difference]: Start difference. First operand has 80 places, 78 transitions, 205 flow. Second operand 4 states and 251 transitions. [2025-03-17 19:24:40,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 150 transitions, 663 flow [2025-03-17 19:24:40,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 150 transitions, 631 flow, removed 0 selfloop flow, removed 5 redundant places. [2025-03-17 19:24:40,619 INFO L231 Difference]: Finished difference. Result has 80 places, 80 transitions, 217 flow [2025-03-17 19:24:40,620 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=193, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=217, PETRI_PLACES=80, PETRI_TRANSITIONS=80} [2025-03-17 19:24:40,620 INFO L279 CegarLoopForPetriNet]: 77 programPoint places, 3 predicate places. [2025-03-17 19:24:40,620 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 80 transitions, 217 flow [2025-03-17 19:24:40,620 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:24:40,620 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:24:40,620 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:24:40,621 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-17 19:24:40,621 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2025-03-17 19:24:40,621 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:24:40,621 INFO L85 PathProgramCache]: Analyzing trace with hash -1967660111, now seen corresponding path program 1 times [2025-03-17 19:24:40,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:24:40,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170665683] [2025-03-17 19:24:40,621 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:24:40,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:24:40,668 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-17 19:24:40,700 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-17 19:24:40,700 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:24:40,700 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:24:41,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:24:41,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:24:41,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170665683] [2025-03-17 19:24:41,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170665683] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:24:41,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:24:41,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 19:24:41,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931204387] [2025-03-17 19:24:41,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:24:41,361 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 19:24:41,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:24:41,361 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 19:24:41,361 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 19:24:41,361 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 83 [2025-03-17 19:24:41,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 80 transitions, 217 flow. Second operand has 5 states, 5 states have (on average 38.8) internal successors, (194), 5 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:24:41,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:24:41,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 83 [2025-03-17 19:24:41,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:24:42,447 INFO L124 PetriNetUnfolderBase]: 1823/4036 cut-off events. [2025-03-17 19:24:42,448 INFO L125 PetriNetUnfolderBase]: For 1010/1154 co-relation queries the response was YES. [2025-03-17 19:24:42,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8199 conditions, 4036 events. 1823/4036 cut-off events. For 1010/1154 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 26314 event pairs, 263 based on Foata normal form. 38/3696 useless extension candidates. Maximal degree in co-relation 7584. Up to 2417 conditions per place. [2025-03-17 19:24:42,464 INFO L140 encePairwiseOnDemand]: 73/83 looper letters, 88 selfloop transitions, 9 changer transitions 0/127 dead transitions. [2025-03-17 19:24:42,465 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 127 transitions, 581 flow [2025-03-17 19:24:42,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 19:24:42,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 19:24:42,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 303 transitions. [2025-03-17 19:24:42,466 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.608433734939759 [2025-03-17 19:24:42,466 INFO L175 Difference]: Start difference. First operand has 80 places, 80 transitions, 217 flow. Second operand 6 states and 303 transitions. [2025-03-17 19:24:42,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 127 transitions, 581 flow [2025-03-17 19:24:42,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 127 transitions, 571 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 19:24:42,469 INFO L231 Difference]: Finished difference. Result has 84 places, 79 transitions, 231 flow [2025-03-17 19:24:42,469 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=213, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=231, PETRI_PLACES=84, PETRI_TRANSITIONS=79} [2025-03-17 19:24:42,470 INFO L279 CegarLoopForPetriNet]: 77 programPoint places, 7 predicate places. [2025-03-17 19:24:42,470 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 79 transitions, 231 flow [2025-03-17 19:24:42,470 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 38.8) internal successors, (194), 5 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:24:42,470 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:24:42,470 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:24:42,470 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-17 19:24:42,470 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2025-03-17 19:24:42,471 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:24:42,471 INFO L85 PathProgramCache]: Analyzing trace with hash -1615894494, now seen corresponding path program 1 times [2025-03-17 19:24:42,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:24:42,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616395413] [2025-03-17 19:24:42,471 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:24:42,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:24:42,502 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-17 19:24:42,521 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-17 19:24:42,521 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:24:42,522 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:24:42,691 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:24:42,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:24:42,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616395413] [2025-03-17 19:24:42,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616395413] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:24:42,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1603796891] [2025-03-17 19:24:42,692 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:24:42,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:24:42,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:24:42,694 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) [2025-03-17 19:24:42,695 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process