./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/goblint-regression/28-race_reach_71-funloop_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version c00e63dc Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/goblint-regression/28-race_reach_71-funloop_racing.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/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 bde6fe221f69c3fccb0f7c90e011f0b13ab5ca582ddcd328a459cbb512a8fd7f --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 18:45:52,086 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 18:45:52,133 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-02-06 18:45:52,137 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 18:45:52,137 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 18:45:52,155 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 18:45:52,156 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 18:45:52,156 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 18:45:52,156 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 18:45:52,156 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 18:45:52,156 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 18:45:52,156 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 18:45:52,157 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 18:45:52,157 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 18:45:52,157 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 18:45:52,157 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 18:45:52,157 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-06 18:45:52,157 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 18:45:52,157 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 18:45:52,157 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 18:45:52,157 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 18:45:52,158 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-06 18:45:52,158 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 18:45:52,158 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-06 18:45:52,158 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-02-06 18:45:52,158 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-06 18:45:52,158 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 18:45:52,158 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-06 18:45:52,158 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 18:45:52,158 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 18:45:52,158 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 18:45:52,158 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 18:45:52,158 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 18:45:52,158 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 18:45:52,159 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 18:45:52,159 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 18:45:52,159 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 18:45:52,159 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-06 18:45:52,159 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-06 18:45:52,159 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 18:45:52,159 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 18:45:52,159 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 18:45:52,159 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 18:45:52,159 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 18:45:52,159 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 18:45:52,159 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-jdk21/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 -> bde6fe221f69c3fccb0f7c90e011f0b13ab5ca582ddcd328a459cbb512a8fd7f [2025-02-06 18:45:52,366 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 18:45:52,371 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 18:45:52,372 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 18:45:52,373 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 18:45:52,373 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 18:45:52,374 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_71-funloop_racing.i [2025-02-06 18:45:53,434 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/61ff705f7/e76e002072394a1e97c26c6908b28f37/FLAG0e2eaf8a4 [2025-02-06 18:45:53,814 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 18:45:53,817 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_71-funloop_racing.i [2025-02-06 18:45:53,833 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/61ff705f7/e76e002072394a1e97c26c6908b28f37/FLAG0e2eaf8a4 [2025-02-06 18:45:54,013 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/61ff705f7/e76e002072394a1e97c26c6908b28f37 [2025-02-06 18:45:54,015 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 18:45:54,016 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 18:45:54,017 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 18:45:54,017 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 18:45:54,020 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 18:45:54,020 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 06:45:54" (1/1) ... [2025-02-06 18:45:54,021 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2217ad44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:45:54, skipping insertion in model container [2025-02-06 18:45:54,021 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 06:45:54" (1/1) ... [2025-02-06 18:45:54,041 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 18:45:54,288 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 18:45:54,308 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 18:45:54,340 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 18:45:54,377 INFO L204 MainTranslator]: Completed translation [2025-02-06 18:45:54,377 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:45:54 WrapperNode [2025-02-06 18:45:54,378 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 18:45:54,378 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 18:45:54,378 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 18:45:54,378 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 18:45:54,382 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:45:54" (1/1) ... [2025-02-06 18:45:54,391 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:45:54" (1/1) ... [2025-02-06 18:45:54,410 INFO L138 Inliner]: procedures = 272, calls = 108, calls flagged for inlining = 7, calls inlined = 10, statements flattened = 336 [2025-02-06 18:45:54,411 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 18:45:54,411 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 18:45:54,411 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 18:45:54,411 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 18:45:54,417 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:45:54" (1/1) ... [2025-02-06 18:45:54,417 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:45:54" (1/1) ... [2025-02-06 18:45:54,420 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:45:54" (1/1) ... [2025-02-06 18:45:54,432 INFO L175 MemorySlicer]: Split 84 memory accesses to 4 slices as follows [2, 5, 75, 2]. 89 percent of accesses are in the largest equivalence class. The 67 initializations are split as follows [2, 5, 60, 0]. The 7 writes are split as follows [0, 0, 6, 1]. [2025-02-06 18:45:54,432 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:45:54" (1/1) ... [2025-02-06 18:45:54,432 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:45:54" (1/1) ... [2025-02-06 18:45:54,438 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:45:54" (1/1) ... [2025-02-06 18:45:54,439 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:45:54" (1/1) ... [2025-02-06 18:45:54,440 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:45:54" (1/1) ... [2025-02-06 18:45:54,441 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:45:54" (1/1) ... [2025-02-06 18:45:54,442 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 18:45:54,443 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 18:45:54,443 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 18:45:54,443 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 18:45:54,444 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:45:54" (1/1) ... [2025-02-06 18:45:54,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 18:45:54,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:45:54,467 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-06 18:45:54,468 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-06 18:45:54,482 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-02-06 18:45:54,482 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-06 18:45:54,482 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-02-06 18:45:54,482 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-06 18:45:54,482 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-06 18:45:54,483 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-02-06 18:45:54,483 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-02-06 18:45:54,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-06 18:45:54,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-06 18:45:54,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-02-06 18:45:54,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-02-06 18:45:54,483 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-02-06 18:45:54,483 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 18:45:54,483 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2025-02-06 18:45:54,483 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2025-02-06 18:45:54,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 18:45:54,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-06 18:45:54,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-02-06 18:45:54,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-02-06 18:45:54,483 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 18:45:54,483 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 18:45:54,484 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-06 18:45:54,574 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 18:45:54,576 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 18:45:54,913 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L954: havoc main_~#t_ids~0#1.base, main_~#t_ids~0#1.offset; [2025-02-06 18:45:54,915 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L954-1: SUMMARY for call ULTIMATE.dealloc(main_~#t_ids~0#1.base, main_~#t_ids~0#1.offset); srcloc: null [2025-02-06 18:45:54,970 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-06 18:45:54,971 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 18:45:55,228 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 18:45:55,229 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 18:45:55,229 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 06:45:55 BoogieIcfgContainer [2025-02-06 18:45:55,229 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 18:45:55,231 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 18:45:55,232 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 18:45:55,235 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 18:45:55,235 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 06:45:54" (1/3) ... [2025-02-06 18:45:55,236 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4138ccde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 06:45:55, skipping insertion in model container [2025-02-06 18:45:55,236 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:45:54" (2/3) ... [2025-02-06 18:45:55,236 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4138ccde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 06:45:55, skipping insertion in model container [2025-02-06 18:45:55,236 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 06:45:55" (3/3) ... [2025-02-06 18:45:55,237 INFO L128 eAbstractionObserver]: Analyzing ICFG 28-race_reach_71-funloop_racing.i [2025-02-06 18:45:55,246 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 18:45:55,248 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 28-race_reach_71-funloop_racing.i that has 2 procedures, 135 locations, 1 initial locations, 20 loop locations, and 22 error locations. [2025-02-06 18:45:55,248 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-06 18:45:55,312 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2025-02-06 18:45:55,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 138 places, 172 transitions, 351 flow [2025-02-06 18:45:55,409 INFO L124 PetriNetUnfolderBase]: 60/271 cut-off events. [2025-02-06 18:45:55,410 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-02-06 18:45:55,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 276 conditions, 271 events. 60/271 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1384 event pairs, 0 based on Foata normal form. 0/176 useless extension candidates. Maximal degree in co-relation 157. Up to 8 conditions per place. [2025-02-06 18:45:55,419 INFO L82 GeneralOperation]: Start removeDead. Operand has 138 places, 172 transitions, 351 flow [2025-02-06 18:45:55,425 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 138 places, 171 transitions, 349 flow [2025-02-06 18:45:55,436 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 18:45:55,447 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;@67dbf82, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 18:45:55,448 INFO L334 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2025-02-06 18:45:55,453 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 18:45:55,453 INFO L124 PetriNetUnfolderBase]: 1/5 cut-off events. [2025-02-06 18:45:55,453 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 18:45:55,453 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:45:55,454 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-02-06 18:45:55,454 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2025-02-06 18:45:55,458 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:45:55,459 INFO L85 PathProgramCache]: Analyzing trace with hash 842477, now seen corresponding path program 1 times [2025-02-06 18:45:55,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:45:55,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278004253] [2025-02-06 18:45:55,466 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:45:55,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:45:55,526 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-06 18:45:55,542 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-06 18:45:55,542 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:45:55,542 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:45:55,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:45:55,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:45:55,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278004253] [2025-02-06 18:45:55,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278004253] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:45:55,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:45:55,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 18:45:55,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981992293] [2025-02-06 18:45:55,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:45:55,692 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:45:55,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:45:55,710 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:45:55,711 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:45:55,725 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 172 [2025-02-06 18:45:55,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 171 transitions, 349 flow. Second operand has 4 states, 4 states have (on average 74.75) internal successors, (299), 4 states have internal predecessors, (299), 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) [2025-02-06 18:45:55,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:45:55,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 172 [2025-02-06 18:45:55,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:45:56,135 INFO L124 PetriNetUnfolderBase]: 894/2941 cut-off events. [2025-02-06 18:45:56,135 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-02-06 18:45:56,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4632 conditions, 2941 events. 894/2941 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 24480 event pairs, 740 based on Foata normal form. 742/3288 useless extension candidates. Maximal degree in co-relation 4483. Up to 1684 conditions per place. [2025-02-06 18:45:56,150 INFO L140 encePairwiseOnDemand]: 136/172 looper letters, 66 selfloop transitions, 3 changer transitions 0/143 dead transitions. [2025-02-06 18:45:56,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 143 transitions, 431 flow [2025-02-06 18:45:56,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:45:56,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:45:56,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 398 transitions. [2025-02-06 18:45:56,159 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5784883720930233 [2025-02-06 18:45:56,160 INFO L175 Difference]: Start difference. First operand has 138 places, 171 transitions, 349 flow. Second operand 4 states and 398 transitions. [2025-02-06 18:45:56,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 143 transitions, 431 flow [2025-02-06 18:45:56,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 143 transitions, 431 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-06 18:45:56,169 INFO L231 Difference]: Finished difference. Result has 143 places, 143 transitions, 313 flow [2025-02-06 18:45:56,171 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=289, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=313, PETRI_PLACES=143, PETRI_TRANSITIONS=143} [2025-02-06 18:45:56,177 INFO L279 CegarLoopForPetriNet]: 138 programPoint places, 5 predicate places. [2025-02-06 18:45:56,177 INFO L471 AbstractCegarLoop]: Abstraction has has 143 places, 143 transitions, 313 flow [2025-02-06 18:45:56,177 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 74.75) internal successors, (299), 4 states have internal predecessors, (299), 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) [2025-02-06 18:45:56,177 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:45:56,177 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-02-06 18:45:56,177 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 18:45:56,178 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2025-02-06 18:45:56,178 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:45:56,178 INFO L85 PathProgramCache]: Analyzing trace with hash -670808755, now seen corresponding path program 1 times [2025-02-06 18:45:56,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:45:56,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75118309] [2025-02-06 18:45:56,178 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:45:56,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:45:56,191 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-06 18:45:56,198 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-06 18:45:56,198 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:45:56,198 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:45:56,277 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:45:56,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:45:56,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75118309] [2025-02-06 18:45:56,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75118309] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:45:56,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [62017485] [2025-02-06 18:45:56,277 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:45:56,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:45:56,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:45:56,279 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:45:56,291 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-06 18:45:56,337 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-06 18:45:56,358 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-06 18:45:56,358 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:45:56,358 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:45:56,360 INFO L256 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-06 18:45:56,362 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:45:56,391 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:45:56,391 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 18:45:56,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [62017485] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:45:56,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 18:45:56,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-02-06 18:45:56,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370428886] [2025-02-06 18:45:56,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:45:56,392 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 18:45:56,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:45:56,393 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 18:45:56,393 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-02-06 18:45:56,399 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 172 [2025-02-06 18:45:56,400 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 143 transitions, 313 flow. Second operand has 6 states, 6 states have (on average 74.83333333333333) internal successors, (449), 6 states have internal predecessors, (449), 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) [2025-02-06 18:45:56,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:45:56,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 172 [2025-02-06 18:45:56,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:45:56,880 INFO L124 PetriNetUnfolderBase]: 894/2940 cut-off events. [2025-02-06 18:45:56,880 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-02-06 18:45:56,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4642 conditions, 2940 events. 894/2940 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 24438 event pairs, 740 based on Foata normal form. 1/2546 useless extension candidates. Maximal degree in co-relation 4624. Up to 1679 conditions per place. [2025-02-06 18:45:56,897 INFO L140 encePairwiseOnDemand]: 167/172 looper letters, 62 selfloop transitions, 6 changer transitions 0/142 dead transitions. [2025-02-06 18:45:56,898 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 142 transitions, 445 flow [2025-02-06 18:45:56,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 18:45:56,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 18:45:56,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 513 transitions. [2025-02-06 18:45:56,900 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.49709302325581395 [2025-02-06 18:45:56,900 INFO L175 Difference]: Start difference. First operand has 143 places, 143 transitions, 313 flow. Second operand 6 states and 513 transitions. [2025-02-06 18:45:56,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 142 transitions, 445 flow [2025-02-06 18:45:56,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 142 transitions, 443 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 18:45:56,903 INFO L231 Difference]: Finished difference. Result has 146 places, 142 transitions, 319 flow [2025-02-06 18:45:56,903 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=307, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=319, PETRI_PLACES=146, PETRI_TRANSITIONS=142} [2025-02-06 18:45:56,903 INFO L279 CegarLoopForPetriNet]: 138 programPoint places, 8 predicate places. [2025-02-06 18:45:56,904 INFO L471 AbstractCegarLoop]: Abstraction has has 146 places, 142 transitions, 319 flow [2025-02-06 18:45:56,904 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 74.83333333333333) internal successors, (449), 6 states have internal predecessors, (449), 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) [2025-02-06 18:45:56,904 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:45:56,904 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2025-02-06 18:45:56,911 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-06 18:45:57,108 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:45:57,108 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2025-02-06 18:45:57,108 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:45:57,109 INFO L85 PathProgramCache]: Analyzing trace with hash 679765844, now seen corresponding path program 1 times [2025-02-06 18:45:57,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:45:57,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194206030] [2025-02-06 18:45:57,109 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:45:57,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:45:57,130 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-06 18:45:57,146 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-06 18:45:57,146 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:45:57,146 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:45:57,196 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 18:45:57,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:45:57,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194206030] [2025-02-06 18:45:57,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194206030] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:45:57,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:45:57,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 18:45:57,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374624194] [2025-02-06 18:45:57,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:45:57,197 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 18:45:57,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:45:57,197 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 18:45:57,198 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 18:45:57,204 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 172 [2025-02-06 18:45:57,205 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 142 transitions, 319 flow. Second operand has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 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) [2025-02-06 18:45:57,205 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:45:57,205 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 172 [2025-02-06 18:45:57,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:45:57,536 INFO L124 PetriNetUnfolderBase]: 894/2939 cut-off events. [2025-02-06 18:45:57,536 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2025-02-06 18:45:57,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4644 conditions, 2939 events. 894/2939 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 24449 event pairs, 740 based on Foata normal form. 1/2546 useless extension candidates. Maximal degree in co-relation 4620. Up to 1682 conditions per place. [2025-02-06 18:45:57,547 INFO L140 encePairwiseOnDemand]: 169/172 looper letters, 63 selfloop transitions, 4 changer transitions 0/141 dead transitions. [2025-02-06 18:45:57,547 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 141 transitions, 449 flow [2025-02-06 18:45:57,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 18:45:57,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 18:45:57,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 288 transitions. [2025-02-06 18:45:57,549 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5581395348837209 [2025-02-06 18:45:57,549 INFO L175 Difference]: Start difference. First operand has 146 places, 142 transitions, 319 flow. Second operand 3 states and 288 transitions. [2025-02-06 18:45:57,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 141 transitions, 449 flow [2025-02-06 18:45:57,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 141 transitions, 427 flow, removed 3 selfloop flow, removed 6 redundant places. [2025-02-06 18:45:57,554 INFO L231 Difference]: Finished difference. Result has 141 places, 141 transitions, 301 flow [2025-02-06 18:45:57,555 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=293, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=301, PETRI_PLACES=141, PETRI_TRANSITIONS=141} [2025-02-06 18:45:57,556 INFO L279 CegarLoopForPetriNet]: 138 programPoint places, 3 predicate places. [2025-02-06 18:45:57,556 INFO L471 AbstractCegarLoop]: Abstraction has has 141 places, 141 transitions, 301 flow [2025-02-06 18:45:57,556 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 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) [2025-02-06 18:45:57,556 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:45:57,556 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:45:57,556 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-06 18:45:57,556 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2025-02-06 18:45:57,556 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:45:57,556 INFO L85 PathProgramCache]: Analyzing trace with hash 423076948, now seen corresponding path program 1 times [2025-02-06 18:45:57,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:45:57,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592292686] [2025-02-06 18:45:57,557 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:45:57,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:45:57,572 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-06 18:45:57,577 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-06 18:45:57,577 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:45:57,577 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:45:57,658 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:45:57,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:45:57,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592292686] [2025-02-06 18:45:57,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592292686] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:45:57,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [184320498] [2025-02-06 18:45:57,659 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:45:57,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:45:57,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:45:57,663 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:45:57,671 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-06 18:45:57,721 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-06 18:45:57,744 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-06 18:45:57,744 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:45:57,744 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:45:57,746 INFO L256 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 18:45:57,746 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:45:57,767 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:45:57,768 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:45:57,793 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:45:57,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [184320498] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:45:57,793 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:45:57,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2025-02-06 18:45:57,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484685806] [2025-02-06 18:45:57,793 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:45:57,793 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-06 18:45:57,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:45:57,794 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-06 18:45:57,794 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2025-02-06 18:45:57,801 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 172 [2025-02-06 18:45:57,802 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 141 transitions, 301 flow. Second operand has 10 states, 10 states have (on average 75.3) internal successors, (753), 10 states have internal predecessors, (753), 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) [2025-02-06 18:45:57,802 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:45:57,802 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 172 [2025-02-06 18:45:57,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:45:58,137 INFO L124 PetriNetUnfolderBase]: 894/2943 cut-off events. [2025-02-06 18:45:58,138 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2025-02-06 18:45:58,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4647 conditions, 2943 events. 894/2943 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 24446 event pairs, 740 based on Foata normal form. 2/2552 useless extension candidates. Maximal degree in co-relation 4613. Up to 1680 conditions per place. [2025-02-06 18:45:58,150 INFO L140 encePairwiseOnDemand]: 168/172 looper letters, 63 selfloop transitions, 7 changer transitions 0/144 dead transitions. [2025-02-06 18:45:58,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 144 transitions, 456 flow [2025-02-06 18:45:58,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 18:45:58,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-06 18:45:58,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 590 transitions. [2025-02-06 18:45:58,152 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4900332225913621 [2025-02-06 18:45:58,152 INFO L175 Difference]: Start difference. First operand has 141 places, 141 transitions, 301 flow. Second operand 7 states and 590 transitions. [2025-02-06 18:45:58,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 144 transitions, 456 flow [2025-02-06 18:45:58,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 144 transitions, 442 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-06 18:45:58,156 INFO L231 Difference]: Finished difference. Result has 147 places, 144 transitions, 327 flow [2025-02-06 18:45:58,156 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=293, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=327, PETRI_PLACES=147, PETRI_TRANSITIONS=144} [2025-02-06 18:45:58,157 INFO L279 CegarLoopForPetriNet]: 138 programPoint places, 9 predicate places. [2025-02-06 18:45:58,157 INFO L471 AbstractCegarLoop]: Abstraction has has 147 places, 144 transitions, 327 flow [2025-02-06 18:45:58,158 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 75.3) internal successors, (753), 10 states have internal predecessors, (753), 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) [2025-02-06 18:45:58,158 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:45:58,158 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1] [2025-02-06 18:45:58,165 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-02-06 18:45:58,358 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:45:58,360 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2025-02-06 18:45:58,361 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:45:58,361 INFO L85 PathProgramCache]: Analyzing trace with hash 957876308, now seen corresponding path program 2 times [2025-02-06 18:45:58,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:45:58,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783939083] [2025-02-06 18:45:58,361 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:45:58,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:45:58,385 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 15 statements into 2 equivalence classes. [2025-02-06 18:45:58,390 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 6 of 15 statements. [2025-02-06 18:45:58,391 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 18:45:58,391 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:45:58,443 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-06 18:45:58,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:45:58,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783939083] [2025-02-06 18:45:58,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783939083] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:45:58,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:45:58,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 18:45:58,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172124134] [2025-02-06 18:45:58,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:45:58,445 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:45:58,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:45:58,445 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:45:58,445 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:45:58,455 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 172 [2025-02-06 18:45:58,457 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 144 transitions, 327 flow. Second operand has 4 states, 4 states have (on average 75.0) internal successors, (300), 4 states have internal predecessors, (300), 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) [2025-02-06 18:45:58,458 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:45:58,458 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 172 [2025-02-06 18:45:58,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:45:58,733 INFO L124 PetriNetUnfolderBase]: 865/2608 cut-off events. [2025-02-06 18:45:58,733 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2025-02-06 18:45:58,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4283 conditions, 2608 events. 865/2608 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 20834 event pairs, 0 based on Foata normal form. 21/2351 useless extension candidates. Maximal degree in co-relation 4244. Up to 1585 conditions per place. [2025-02-06 18:45:58,744 INFO L140 encePairwiseOnDemand]: 166/172 looper letters, 111 selfloop transitions, 3 changer transitions 0/185 dead transitions. [2025-02-06 18:45:58,744 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 185 transitions, 637 flow [2025-02-06 18:45:58,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:45:58,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:45:58,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 404 transitions. [2025-02-06 18:45:58,745 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5872093023255814 [2025-02-06 18:45:58,745 INFO L175 Difference]: Start difference. First operand has 147 places, 144 transitions, 327 flow. Second operand 4 states and 404 transitions. [2025-02-06 18:45:58,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 185 transitions, 637 flow [2025-02-06 18:45:58,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 185 transitions, 633 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-06 18:45:58,748 INFO L231 Difference]: Finished difference. Result has 147 places, 142 transitions, 329 flow [2025-02-06 18:45:58,749 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=319, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=329, PETRI_PLACES=147, PETRI_TRANSITIONS=142} [2025-02-06 18:45:58,749 INFO L279 CegarLoopForPetriNet]: 138 programPoint places, 9 predicate places. [2025-02-06 18:45:58,749 INFO L471 AbstractCegarLoop]: Abstraction has has 147 places, 142 transitions, 329 flow [2025-02-06 18:45:58,749 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 75.0) internal successors, (300), 4 states have internal predecessors, (300), 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) [2025-02-06 18:45:58,750 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:45:58,750 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:45:58,750 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-06 18:45:58,750 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2025-02-06 18:45:58,750 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:45:58,750 INFO L85 PathProgramCache]: Analyzing trace with hash 331136038, now seen corresponding path program 1 times [2025-02-06 18:45:58,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:45:58,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167361230] [2025-02-06 18:45:58,751 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:45:58,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:45:58,757 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-02-06 18:45:58,763 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-02-06 18:45:58,763 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:45:58,763 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:45:58,851 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:45:58,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:45:58,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167361230] [2025-02-06 18:45:58,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167361230] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:45:58,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1129968247] [2025-02-06 18:45:58,852 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:45:58,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:45:58,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:45:58,858 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:45:58,859 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-06 18:45:58,914 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-02-06 18:45:58,935 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-02-06 18:45:58,935 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:45:58,935 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:45:58,936 INFO L256 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-06 18:45:58,937 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:45:58,975 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:45:58,975 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:45:59,059 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:45:59,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1129968247] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:45:59,059 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:45:59,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2025-02-06 18:45:59,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488662842] [2025-02-06 18:45:59,060 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:45:59,060 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-02-06 18:45:59,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:45:59,060 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-02-06 18:45:59,060 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2025-02-06 18:45:59,079 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 172 [2025-02-06 18:45:59,080 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 142 transitions, 329 flow. Second operand has 18 states, 18 states have (on average 75.22222222222223) internal successors, (1354), 18 states have internal predecessors, (1354), 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) [2025-02-06 18:45:59,080 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:45:59,080 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 172 [2025-02-06 18:45:59,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:45:59,442 INFO L124 PetriNetUnfolderBase]: 886/2870 cut-off events. [2025-02-06 18:45:59,442 INFO L125 PetriNetUnfolderBase]: For 81/81 co-relation queries the response was YES. [2025-02-06 18:45:59,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4610 conditions, 2870 events. 886/2870 cut-off events. For 81/81 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 23501 event pairs, 740 based on Foata normal form. 4/2524 useless extension candidates. Maximal degree in co-relation 4535. Up to 1640 conditions per place. [2025-02-06 18:45:59,455 INFO L140 encePairwiseOnDemand]: 168/172 looper letters, 63 selfloop transitions, 15 changer transitions 0/150 dead transitions. [2025-02-06 18:45:59,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 150 transitions, 533 flow [2025-02-06 18:45:59,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-02-06 18:45:59,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2025-02-06 18:45:59,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1192 transitions. [2025-02-06 18:45:59,461 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.462015503875969 [2025-02-06 18:45:59,461 INFO L175 Difference]: Start difference. First operand has 147 places, 142 transitions, 329 flow. Second operand 15 states and 1192 transitions. [2025-02-06 18:45:59,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 150 transitions, 533 flow [2025-02-06 18:45:59,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 150 transitions, 527 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-06 18:45:59,464 INFO L231 Difference]: Finished difference. Result has 162 places, 150 transitions, 420 flow [2025-02-06 18:45:59,464 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=323, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=420, PETRI_PLACES=162, PETRI_TRANSITIONS=150} [2025-02-06 18:45:59,464 INFO L279 CegarLoopForPetriNet]: 138 programPoint places, 24 predicate places. [2025-02-06 18:45:59,464 INFO L471 AbstractCegarLoop]: Abstraction has has 162 places, 150 transitions, 420 flow [2025-02-06 18:45:59,465 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 75.22222222222223) internal successors, (1354), 18 states have internal predecessors, (1354), 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) [2025-02-06 18:45:59,465 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:45:59,465 INFO L206 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 2, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:45:59,475 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-02-06 18:45:59,666 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:45:59,666 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2025-02-06 18:45:59,667 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:45:59,667 INFO L85 PathProgramCache]: Analyzing trace with hash -1630014426, now seen corresponding path program 2 times [2025-02-06 18:45:59,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:45:59,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141334081] [2025-02-06 18:45:59,667 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:45:59,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:45:59,679 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 30 statements into 2 equivalence classes. [2025-02-06 18:45:59,697 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 30 of 30 statements. [2025-02-06 18:45:59,699 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 18:45:59,699 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:45:59,960 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:45:59,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:45:59,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141334081] [2025-02-06 18:45:59,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141334081] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:45:59,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1694410502] [2025-02-06 18:45:59,961 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:45:59,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:45:59,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:45:59,964 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:45:59,971 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-02-06 18:46:00,020 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 30 statements into 2 equivalence classes. [2025-02-06 18:46:00,048 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 30 of 30 statements. [2025-02-06 18:46:00,048 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 18:46:00,048 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:46:00,050 INFO L256 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-02-06 18:46:00,051 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:46:00,125 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:46:00,126 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:46:00,286 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:46:00,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1694410502] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:46:00,286 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:46:00,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 22 [2025-02-06 18:46:00,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881316892] [2025-02-06 18:46:00,286 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:46:00,286 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-02-06 18:46:00,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:46:00,287 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-02-06 18:46:00,287 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2025-02-06 18:46:00,301 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 172 [2025-02-06 18:46:00,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 150 transitions, 420 flow. Second operand has 23 states, 23 states have (on average 75.21739130434783) internal successors, (1730), 23 states have internal predecessors, (1730), 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) [2025-02-06 18:46:00,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:46:00,303 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 172 [2025-02-06 18:46:00,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:46:00,756 INFO L124 PetriNetUnfolderBase]: 886/2879 cut-off events. [2025-02-06 18:46:00,756 INFO L125 PetriNetUnfolderBase]: For 141/141 co-relation queries the response was YES. [2025-02-06 18:46:00,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4651 conditions, 2879 events. 886/2879 cut-off events. For 141/141 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 23493 event pairs, 740 based on Foata normal form. 3/2532 useless extension candidates. Maximal degree in co-relation 4516. Up to 1640 conditions per place. [2025-02-06 18:46:00,766 INFO L140 encePairwiseOnDemand]: 168/172 looper letters, 63 selfloop transitions, 21 changer transitions 0/156 dead transitions. [2025-02-06 18:46:00,766 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 156 transitions, 642 flow [2025-02-06 18:46:00,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-02-06 18:46:00,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2025-02-06 18:46:00,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1641 transitions. [2025-02-06 18:46:00,770 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4543189368770764 [2025-02-06 18:46:00,770 INFO L175 Difference]: Start difference. First operand has 162 places, 150 transitions, 420 flow. Second operand 21 states and 1641 transitions. [2025-02-06 18:46:00,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 156 transitions, 642 flow [2025-02-06 18:46:00,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 156 transitions, 632 flow, removed 1 selfloop flow, removed 4 redundant places. [2025-02-06 18:46:00,773 INFO L231 Difference]: Finished difference. Result has 181 places, 156 transitions, 521 flow [2025-02-06 18:46:00,773 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=410, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=521, PETRI_PLACES=181, PETRI_TRANSITIONS=156} [2025-02-06 18:46:00,773 INFO L279 CegarLoopForPetriNet]: 138 programPoint places, 43 predicate places. [2025-02-06 18:46:00,773 INFO L471 AbstractCegarLoop]: Abstraction has has 181 places, 156 transitions, 521 flow [2025-02-06 18:46:00,774 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 75.21739130434783) internal successors, (1730), 23 states have internal predecessors, (1730), 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) [2025-02-06 18:46:00,774 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:46:00,774 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 2, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:46:00,788 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-02-06 18:46:00,974 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2025-02-06 18:46:00,975 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2025-02-06 18:46:00,975 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:46:00,975 INFO L85 PathProgramCache]: Analyzing trace with hash -1109036602, now seen corresponding path program 3 times [2025-02-06 18:46:00,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:46:00,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223838663] [2025-02-06 18:46:00,975 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 18:46:00,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:46:00,987 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 39 statements into 11 equivalence classes. [2025-02-06 18:46:01,038 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) and asserted 39 of 39 statements. [2025-02-06 18:46:01,038 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2025-02-06 18:46:01,038 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 18:46:01,038 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-06 18:46:01,041 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-02-06 18:46:01,050 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-02-06 18:46:01,050 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:46:01,050 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 18:46:01,063 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-06 18:46:01,063 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-02-06 18:46:01,064 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (28 of 29 remaining) [2025-02-06 18:46:01,065 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 29 remaining) [2025-02-06 18:46:01,065 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 29 remaining) [2025-02-06 18:46:01,065 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 29 remaining) [2025-02-06 18:46:01,065 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 29 remaining) [2025-02-06 18:46:01,065 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 29 remaining) [2025-02-06 18:46:01,065 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 29 remaining) [2025-02-06 18:46:01,065 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 29 remaining) [2025-02-06 18:46:01,065 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 29 remaining) [2025-02-06 18:46:01,065 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 29 remaining) [2025-02-06 18:46:01,065 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 29 remaining) [2025-02-06 18:46:01,065 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 29 remaining) [2025-02-06 18:46:01,065 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 29 remaining) [2025-02-06 18:46:01,065 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 29 remaining) [2025-02-06 18:46:01,065 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 29 remaining) [2025-02-06 18:46:01,065 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 29 remaining) [2025-02-06 18:46:01,065 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 29 remaining) [2025-02-06 18:46:01,065 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 29 remaining) [2025-02-06 18:46:01,065 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 29 remaining) [2025-02-06 18:46:01,065 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 29 remaining) [2025-02-06 18:46:01,065 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 29 remaining) [2025-02-06 18:46:01,065 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 29 remaining) [2025-02-06 18:46:01,065 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 29 remaining) [2025-02-06 18:46:01,065 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 29 remaining) [2025-02-06 18:46:01,065 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 29 remaining) [2025-02-06 18:46:01,065 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 29 remaining) [2025-02-06 18:46:01,065 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 29 remaining) [2025-02-06 18:46:01,066 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 29 remaining) [2025-02-06 18:46:01,066 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 29 remaining) [2025-02-06 18:46:01,066 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-02-06 18:46:01,066 INFO L422 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1] [2025-02-06 18:46:01,067 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2025-02-06 18:46:01,067 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2025-02-06 18:46:01,091 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-02-06 18:46:01,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 182 places, 227 transitions, 470 flow [2025-02-06 18:46:01,122 INFO L124 PetriNetUnfolderBase]: 97/444 cut-off events. [2025-02-06 18:46:01,122 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2025-02-06 18:46:01,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 456 conditions, 444 events. 97/444 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 2567 event pairs, 0 based on Foata normal form. 0/289 useless extension candidates. Maximal degree in co-relation 273. Up to 12 conditions per place. [2025-02-06 18:46:01,124 INFO L82 GeneralOperation]: Start removeDead. Operand has 182 places, 227 transitions, 470 flow [2025-02-06 18:46:01,127 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 182 places, 227 transitions, 470 flow [2025-02-06 18:46:01,127 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 18:46:01,127 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;@67dbf82, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 18:46:01,127 INFO L334 AbstractCegarLoop]: Starting to check reachability of 35 error locations. [2025-02-06 18:46:01,129 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 18:46:01,129 INFO L124 PetriNetUnfolderBase]: 1/5 cut-off events. [2025-02-06 18:46:01,129 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 18:46:01,129 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:46:01,129 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-02-06 18:46:01,129 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2025-02-06 18:46:01,130 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:46:01,130 INFO L85 PathProgramCache]: Analyzing trace with hash 1067888, now seen corresponding path program 1 times [2025-02-06 18:46:01,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:46:01,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121399179] [2025-02-06 18:46:01,130 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:46:01,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:46:01,135 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-06 18:46:01,137 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-06 18:46:01,137 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:46:01,137 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:46:01,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:46:01,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:46:01,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121399179] [2025-02-06 18:46:01,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121399179] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:46:01,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:46:01,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 18:46:01,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765262551] [2025-02-06 18:46:01,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:46:01,159 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:46:01,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:46:01,160 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:46:01,160 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:46:01,165 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 227 [2025-02-06 18:46:01,165 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 227 transitions, 470 flow. Second operand has 4 states, 4 states have (on average 96.75) internal successors, (387), 4 states have internal predecessors, (387), 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) [2025-02-06 18:46:01,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:46:01,165 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 227 [2025-02-06 18:46:01,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:46:05,496 INFO L124 PetriNetUnfolderBase]: 37469/83802 cut-off events. [2025-02-06 18:46:05,497 INFO L125 PetriNetUnfolderBase]: For 171/171 co-relation queries the response was YES. [2025-02-06 18:46:05,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138209 conditions, 83802 events. 37469/83802 cut-off events. For 171/171 co-relation queries the response was YES. Maximal size of possible extension queue 2474. Compared 991011 event pairs, 32349 based on Foata normal form. 23577/96017 useless extension candidates. Maximal degree in co-relation 102857. Up to 54293 conditions per place. [2025-02-06 18:46:05,913 INFO L140 encePairwiseOnDemand]: 181/227 looper letters, 90 selfloop transitions, 3 changer transitions 0/189 dead transitions. [2025-02-06 18:46:05,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 189 transitions, 580 flow [2025-02-06 18:46:05,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:46:05,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:46:05,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 520 transitions. [2025-02-06 18:46:05,915 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5726872246696035 [2025-02-06 18:46:05,916 INFO L175 Difference]: Start difference. First operand has 182 places, 227 transitions, 470 flow. Second operand 4 states and 520 transitions. [2025-02-06 18:46:05,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 189 transitions, 580 flow [2025-02-06 18:46:05,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 189 transitions, 580 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-06 18:46:05,919 INFO L231 Difference]: Finished difference. Result has 187 places, 189 transitions, 414 flow [2025-02-06 18:46:05,920 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=227, PETRI_DIFFERENCE_MINUEND_FLOW=390, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=414, PETRI_PLACES=187, PETRI_TRANSITIONS=189} [2025-02-06 18:46:05,920 INFO L279 CegarLoopForPetriNet]: 182 programPoint places, 5 predicate places. [2025-02-06 18:46:05,921 INFO L471 AbstractCegarLoop]: Abstraction has has 187 places, 189 transitions, 414 flow [2025-02-06 18:46:05,921 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 96.75) internal successors, (387), 4 states have internal predecessors, (387), 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) [2025-02-06 18:46:05,921 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:46:05,921 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-02-06 18:46:05,921 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-02-06 18:46:05,921 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2025-02-06 18:46:05,922 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:46:05,922 INFO L85 PathProgramCache]: Analyzing trace with hash 1749668461, now seen corresponding path program 1 times [2025-02-06 18:46:05,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:46:05,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261982614] [2025-02-06 18:46:05,922 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:46:05,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:46:05,927 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-06 18:46:05,933 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-06 18:46:05,933 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:46:05,933 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:46:05,998 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:46:05,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:46:05,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261982614] [2025-02-06 18:46:05,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261982614] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:46:05,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [577592463] [2025-02-06 18:46:05,999 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:46:05,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:46:05,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:46:06,001 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:46:06,005 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-02-06 18:46:06,179 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-06 18:46:06,196 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-06 18:46:06,196 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:46:06,196 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:46:06,197 INFO L256 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-06 18:46:06,198 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:46:06,228 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:46:06,229 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 18:46:06,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [577592463] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:46:06,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 18:46:06,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-02-06 18:46:06,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491265551] [2025-02-06 18:46:06,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:46:06,230 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 18:46:06,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:46:06,231 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 18:46:06,231 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-02-06 18:46:06,242 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 227 [2025-02-06 18:46:06,243 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 189 transitions, 414 flow. Second operand has 6 states, 6 states have (on average 96.83333333333333) internal successors, (581), 6 states have internal predecessors, (581), 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) [2025-02-06 18:46:06,243 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:46:06,243 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 227 [2025-02-06 18:46:06,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:46:10,677 INFO L124 PetriNetUnfolderBase]: 37469/83801 cut-off events. [2025-02-06 18:46:10,677 INFO L125 PetriNetUnfolderBase]: For 173/173 co-relation queries the response was YES. [2025-02-06 18:46:10,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138219 conditions, 83801 events. 37469/83801 cut-off events. For 173/173 co-relation queries the response was YES. Maximal size of possible extension queue 2474. Compared 990994 event pairs, 32349 based on Foata normal form. 1/72440 useless extension candidates. Maximal degree in co-relation 138200. Up to 54288 conditions per place. [2025-02-06 18:46:11,351 INFO L140 encePairwiseOnDemand]: 222/227 looper letters, 86 selfloop transitions, 6 changer transitions 0/188 dead transitions. [2025-02-06 18:46:11,351 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 188 transitions, 594 flow [2025-02-06 18:46:11,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 18:46:11,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 18:46:11,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 669 transitions. [2025-02-06 18:46:11,353 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4911894273127753 [2025-02-06 18:46:11,353 INFO L175 Difference]: Start difference. First operand has 187 places, 189 transitions, 414 flow. Second operand 6 states and 669 transitions. [2025-02-06 18:46:11,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 188 transitions, 594 flow [2025-02-06 18:46:11,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 188 transitions, 592 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 18:46:11,357 INFO L231 Difference]: Finished difference. Result has 190 places, 188 transitions, 420 flow [2025-02-06 18:46:11,357 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=227, PETRI_DIFFERENCE_MINUEND_FLOW=408, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=420, PETRI_PLACES=190, PETRI_TRANSITIONS=188} [2025-02-06 18:46:11,359 INFO L279 CegarLoopForPetriNet]: 182 programPoint places, 8 predicate places. [2025-02-06 18:46:11,359 INFO L471 AbstractCegarLoop]: Abstraction has has 190 places, 188 transitions, 420 flow [2025-02-06 18:46:11,359 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 96.83333333333333) internal successors, (581), 6 states have internal predecessors, (581), 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) [2025-02-06 18:46:11,359 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:46:11,359 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2025-02-06 18:46:11,371 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-02-06 18:46:11,559 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2025-02-06 18:46:11,560 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2025-02-06 18:46:11,560 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:46:11,560 INFO L85 PathProgramCache]: Analyzing trace with hash -1594851561, now seen corresponding path program 1 times [2025-02-06 18:46:11,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:46:11,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209862030] [2025-02-06 18:46:11,560 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:46:11,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:46:11,571 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-06 18:46:11,574 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-06 18:46:11,574 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:46:11,574 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:46:11,601 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 18:46:11,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:46:11,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209862030] [2025-02-06 18:46:11,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209862030] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:46:11,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:46:11,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 18:46:11,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401124054] [2025-02-06 18:46:11,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:46:11,602 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 18:46:11,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:46:11,602 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 18:46:11,602 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 18:46:11,606 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 227 [2025-02-06 18:46:11,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 188 transitions, 420 flow. Second operand has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 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) [2025-02-06 18:46:11,607 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:46:11,607 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 227 [2025-02-06 18:46:11,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:46:15,958 INFO L124 PetriNetUnfolderBase]: 37469/83800 cut-off events. [2025-02-06 18:46:15,958 INFO L125 PetriNetUnfolderBase]: For 178/178 co-relation queries the response was YES. [2025-02-06 18:46:16,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138221 conditions, 83800 events. 37469/83800 cut-off events. For 178/178 co-relation queries the response was YES. Maximal size of possible extension queue 2474. Compared 990911 event pairs, 32349 based on Foata normal form. 1/72440 useless extension candidates. Maximal degree in co-relation 138196. Up to 54291 conditions per place. [2025-02-06 18:46:16,380 INFO L140 encePairwiseOnDemand]: 224/227 looper letters, 87 selfloop transitions, 4 changer transitions 0/187 dead transitions. [2025-02-06 18:46:16,380 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 187 transitions, 598 flow [2025-02-06 18:46:16,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 18:46:16,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 18:46:16,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 378 transitions. [2025-02-06 18:46:16,381 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5550660792951542 [2025-02-06 18:46:16,381 INFO L175 Difference]: Start difference. First operand has 190 places, 188 transitions, 420 flow. Second operand 3 states and 378 transitions. [2025-02-06 18:46:16,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 187 transitions, 598 flow [2025-02-06 18:46:16,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 187 transitions, 576 flow, removed 3 selfloop flow, removed 6 redundant places. [2025-02-06 18:46:16,384 INFO L231 Difference]: Finished difference. Result has 185 places, 187 transitions, 402 flow [2025-02-06 18:46:16,384 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=227, PETRI_DIFFERENCE_MINUEND_FLOW=394, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=402, PETRI_PLACES=185, PETRI_TRANSITIONS=187} [2025-02-06 18:46:16,385 INFO L279 CegarLoopForPetriNet]: 182 programPoint places, 3 predicate places. [2025-02-06 18:46:16,385 INFO L471 AbstractCegarLoop]: Abstraction has has 185 places, 187 transitions, 402 flow [2025-02-06 18:46:16,385 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 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) [2025-02-06 18:46:16,385 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:46:16,385 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:46:16,385 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-02-06 18:46:16,385 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2025-02-06 18:46:16,386 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:46:16,386 INFO L85 PathProgramCache]: Analyzing trace with hash 654162604, now seen corresponding path program 1 times [2025-02-06 18:46:16,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:46:16,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530074899] [2025-02-06 18:46:16,386 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:46:16,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:46:16,391 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-06 18:46:16,393 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-06 18:46:16,394 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:46:16,394 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:46:16,426 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:46:16,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:46:16,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530074899] [2025-02-06 18:46:16,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530074899] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:46:16,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1562108745] [2025-02-06 18:46:16,427 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:46:16,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:46:16,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:46:16,429 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:46:16,430 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-02-06 18:46:16,475 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-06 18:46:16,492 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-06 18:46:16,493 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:46:16,493 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:46:16,493 INFO L256 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 18:46:16,494 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:46:16,505 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:46:16,505 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:46:16,526 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:46:16,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1562108745] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:46:16,526 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:46:16,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2025-02-06 18:46:16,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247120985] [2025-02-06 18:46:16,527 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:46:16,527 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-06 18:46:16,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:46:16,527 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-06 18:46:16,527 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2025-02-06 18:46:16,534 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 227 [2025-02-06 18:46:16,535 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 187 transitions, 402 flow. Second operand has 10 states, 10 states have (on average 97.3) internal successors, (973), 10 states have internal predecessors, (973), 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) [2025-02-06 18:46:16,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:46:16,535 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 227 [2025-02-06 18:46:16,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:46:20,970 INFO L124 PetriNetUnfolderBase]: 37469/83804 cut-off events. [2025-02-06 18:46:20,970 INFO L125 PetriNetUnfolderBase]: For 180/180 co-relation queries the response was YES. [2025-02-06 18:46:21,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138224 conditions, 83804 events. 37469/83804 cut-off events. For 180/180 co-relation queries the response was YES. Maximal size of possible extension queue 2474. Compared 991177 event pairs, 32349 based on Foata normal form. 2/72446 useless extension candidates. Maximal degree in co-relation 138189. Up to 54289 conditions per place. [2025-02-06 18:46:21,353 INFO L140 encePairwiseOnDemand]: 223/227 looper letters, 87 selfloop transitions, 7 changer transitions 0/190 dead transitions. [2025-02-06 18:46:21,353 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 190 transitions, 605 flow [2025-02-06 18:46:21,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 18:46:21,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-06 18:46:21,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 768 transitions. [2025-02-06 18:46:21,359 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48332284455632474 [2025-02-06 18:46:21,359 INFO L175 Difference]: Start difference. First operand has 185 places, 187 transitions, 402 flow. Second operand 7 states and 768 transitions. [2025-02-06 18:46:21,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 190 transitions, 605 flow [2025-02-06 18:46:21,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 190 transitions, 591 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-06 18:46:21,362 INFO L231 Difference]: Finished difference. Result has 191 places, 190 transitions, 428 flow [2025-02-06 18:46:21,362 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=227, PETRI_DIFFERENCE_MINUEND_FLOW=394, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=428, PETRI_PLACES=191, PETRI_TRANSITIONS=190} [2025-02-06 18:46:21,363 INFO L279 CegarLoopForPetriNet]: 182 programPoint places, 9 predicate places. [2025-02-06 18:46:21,363 INFO L471 AbstractCegarLoop]: Abstraction has has 191 places, 190 transitions, 428 flow [2025-02-06 18:46:21,363 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 97.3) internal successors, (973), 10 states have internal predecessors, (973), 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) [2025-02-06 18:46:21,364 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:46:21,364 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1] [2025-02-06 18:46:21,370 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-02-06 18:46:21,564 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2025-02-06 18:46:21,565 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2025-02-06 18:46:21,565 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:46:21,565 INFO L85 PathProgramCache]: Analyzing trace with hash 817190284, now seen corresponding path program 2 times [2025-02-06 18:46:21,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:46:21,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115691277] [2025-02-06 18:46:21,565 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:46:21,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:46:21,574 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 15 statements into 2 equivalence classes. [2025-02-06 18:46:21,577 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 6 of 15 statements. [2025-02-06 18:46:21,577 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 18:46:21,577 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:46:21,602 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-06 18:46:21,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:46:21,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115691277] [2025-02-06 18:46:21,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115691277] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:46:21,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:46:21,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 18:46:21,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657938617] [2025-02-06 18:46:21,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:46:21,603 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:46:21,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:46:21,604 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:46:21,604 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:46:21,616 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 227 [2025-02-06 18:46:21,616 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 190 transitions, 428 flow. Second operand has 4 states, 4 states have (on average 97.0) internal successors, (388), 4 states have internal predecessors, (388), 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) [2025-02-06 18:46:21,616 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:46:21,616 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 227 [2025-02-06 18:46:21,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:46:26,274 INFO L124 PetriNetUnfolderBase]: 39152/84913 cut-off events. [2025-02-06 18:46:26,274 INFO L125 PetriNetUnfolderBase]: For 144/144 co-relation queries the response was YES. [2025-02-06 18:46:26,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142080 conditions, 84913 events. 39152/84913 cut-off events. For 144/144 co-relation queries the response was YES. Maximal size of possible extension queue 2310. Compared 981625 event pairs, 16880 based on Foata normal form. 21/74144 useless extension candidates. Maximal degree in co-relation 142040. Up to 56970 conditions per place. [2025-02-06 18:46:26,674 INFO L140 encePairwiseOnDemand]: 221/227 looper letters, 139 selfloop transitions, 3 changer transitions 0/235 dead transitions. [2025-02-06 18:46:26,674 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 235 transitions, 802 flow [2025-02-06 18:46:26,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:46:26,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:46:26,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 520 transitions. [2025-02-06 18:46:26,676 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5726872246696035 [2025-02-06 18:46:26,676 INFO L175 Difference]: Start difference. First operand has 191 places, 190 transitions, 428 flow. Second operand 4 states and 520 transitions. [2025-02-06 18:46:26,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 235 transitions, 802 flow [2025-02-06 18:46:26,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 235 transitions, 798 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-06 18:46:26,679 INFO L231 Difference]: Finished difference. Result has 194 places, 192 transitions, 448 flow [2025-02-06 18:46:26,679 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=227, PETRI_DIFFERENCE_MINUEND_FLOW=424, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=448, PETRI_PLACES=194, PETRI_TRANSITIONS=192} [2025-02-06 18:46:26,680 INFO L279 CegarLoopForPetriNet]: 182 programPoint places, 12 predicate places. [2025-02-06 18:46:26,680 INFO L471 AbstractCegarLoop]: Abstraction has has 194 places, 192 transitions, 448 flow [2025-02-06 18:46:26,681 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 97.0) internal successors, (388), 4 states have internal predecessors, (388), 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) [2025-02-06 18:46:26,681 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:46:26,681 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:46:26,681 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-02-06 18:46:26,681 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2025-02-06 18:46:26,681 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:46:26,682 INFO L85 PathProgramCache]: Analyzing trace with hash 732113898, now seen corresponding path program 1 times [2025-02-06 18:46:26,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:46:26,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164762350] [2025-02-06 18:46:26,682 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:46:26,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:46:26,687 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-02-06 18:46:26,691 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-06 18:46:26,691 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:46:26,691 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:46:26,754 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:46:26,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:46:26,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164762350] [2025-02-06 18:46:26,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164762350] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:46:26,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [206871862] [2025-02-06 18:46:26,754 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:46:26,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:46:26,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:46:26,757 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:46:26,758 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-02-06 18:46:26,807 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-02-06 18:46:26,828 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-06 18:46:26,828 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:46:26,828 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:46:26,829 INFO L256 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-06 18:46:26,830 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:46:26,859 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:46:26,859 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:46:26,922 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:46:26,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [206871862] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:46:26,922 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:46:26,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2025-02-06 18:46:26,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267962629] [2025-02-06 18:46:26,922 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:46:26,923 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-02-06 18:46:26,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:46:26,923 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-02-06 18:46:26,923 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2025-02-06 18:46:26,935 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 227 [2025-02-06 18:46:26,936 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 192 transitions, 448 flow. Second operand has 18 states, 18 states have (on average 97.27777777777777) internal successors, (1751), 18 states have internal predecessors, (1751), 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) [2025-02-06 18:46:26,936 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:46:26,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 227 [2025-02-06 18:46:26,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand