./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/pthread-ext/35_double_lock_p3_vs.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 48c9605d 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/pthread-ext/35_double_lock_p3_vs.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 22ba795826618dfa50b90a88d5a4c30adee7dfead438325f939eb97a379da897 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 13:54:47,039 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 13:54:47,089 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-02-08 13:54:47,092 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 13:54:47,093 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 13:54:47,112 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 13:54:47,114 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 13:54:47,114 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 13:54:47,114 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 13:54:47,114 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 13:54:47,115 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 13:54:47,115 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 13:54:47,115 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 13:54:47,115 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 13:54:47,116 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 13:54:47,116 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 13:54:47,116 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-08 13:54:47,116 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 13:54:47,116 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 13:54:47,116 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 13:54:47,116 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 13:54:47,116 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-08 13:54:47,116 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 13:54:47,116 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-08 13:54:47,116 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-02-08 13:54:47,116 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 13:54:47,117 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 13:54:47,117 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-08 13:54:47,117 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 13:54:47,117 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 13:54:47,117 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 13:54:47,117 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 13:54:47,117 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 13:54:47,117 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 13:54:47,117 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 13:54:47,117 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 13:54:47,117 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 13:54:47,117 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-08 13:54:47,117 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-08 13:54:47,117 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 13:54:47,117 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 13:54:47,117 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 13:54:47,117 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 13:54:47,117 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 13:54:47,117 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 13:54:47,117 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 -> 22ba795826618dfa50b90a88d5a4c30adee7dfead438325f939eb97a379da897 [2025-02-08 13:54:47,371 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 13:54:47,377 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 13:54:47,379 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 13:54:47,380 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 13:54:47,381 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 13:54:47,383 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/35_double_lock_p3_vs.i [2025-02-08 13:54:48,573 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/4c45a2eb9/a7ae036cd2db475fa7d79d64dad88e54/FLAGcd5b34350 [2025-02-08 13:54:48,858 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 13:54:48,859 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-ext/35_double_lock_p3_vs.i [2025-02-08 13:54:48,875 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/4c45a2eb9/a7ae036cd2db475fa7d79d64dad88e54/FLAGcd5b34350 [2025-02-08 13:54:49,132 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/4c45a2eb9/a7ae036cd2db475fa7d79d64dad88e54 [2025-02-08 13:54:49,134 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 13:54:49,135 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 13:54:49,136 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 13:54:49,137 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 13:54:49,140 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 13:54:49,141 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 01:54:49" (1/1) ... [2025-02-08 13:54:49,142 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78342a3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:54:49, skipping insertion in model container [2025-02-08 13:54:49,142 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 01:54:49" (1/1) ... [2025-02-08 13:54:49,165 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 13:54:49,406 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 13:54:49,419 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 13:54:49,461 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 13:54:49,496 INFO L204 MainTranslator]: Completed translation [2025-02-08 13:54:49,496 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:54:49 WrapperNode [2025-02-08 13:54:49,496 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 13:54:49,497 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 13:54:49,497 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 13:54:49,497 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 13:54:49,501 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:54:49" (1/1) ... [2025-02-08 13:54:49,508 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:54:49" (1/1) ... [2025-02-08 13:54:49,519 INFO L138 Inliner]: procedures = 164, calls = 22, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 88 [2025-02-08 13:54:49,519 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 13:54:49,519 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 13:54:49,520 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 13:54:49,520 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 13:54:49,526 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:54:49" (1/1) ... [2025-02-08 13:54:49,526 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:54:49" (1/1) ... [2025-02-08 13:54:49,528 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:54:49" (1/1) ... [2025-02-08 13:54:49,535 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [2, 5]. 71 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5]. The 0 writes are split as follows [0, 0]. [2025-02-08 13:54:49,535 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:54:49" (1/1) ... [2025-02-08 13:54:49,536 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:54:49" (1/1) ... [2025-02-08 13:54:49,539 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:54:49" (1/1) ... [2025-02-08 13:54:49,539 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:54:49" (1/1) ... [2025-02-08 13:54:49,540 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:54:49" (1/1) ... [2025-02-08 13:54:49,541 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:54:49" (1/1) ... [2025-02-08 13:54:49,543 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 13:54:49,543 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 13:54:49,543 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 13:54:49,544 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 13:54:49,544 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:54:49" (1/1) ... [2025-02-08 13:54:49,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 13:54:49,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 13:54:49,570 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) [2025-02-08 13:54:49,574 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 [2025-02-08 13:54:49,591 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2025-02-08 13:54:49,591 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2025-02-08 13:54:49,592 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2025-02-08 13:54:49,592 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2025-02-08 13:54:49,592 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-02-08 13:54:49,592 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 13:54:49,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 13:54:49,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-08 13:54:49,592 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-02-08 13:54:49,592 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 13:54:49,592 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 13:54:49,593 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-08 13:54:49,699 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 13:54:49,701 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 13:54:49,832 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L713: havoc my_thread1_#t~ret1#1, my_thread1_#t~post2#1, my_thread1_#t~post3#1, my_thread1_#t~ret4#1, my_thread1_#t~ret5#1, my_thread1_#t~post6#1, my_thread1_#t~post7#1, my_thread1_#t~ret8#1;assume { :end_inline_my_thread1 } true; [2025-02-08 13:54:49,888 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-08 13:54:49,888 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 13:54:49,964 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 13:54:49,964 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 13:54:49,965 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 01:54:49 BoogieIcfgContainer [2025-02-08 13:54:49,965 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 13:54:49,967 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 13:54:49,967 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 13:54:49,970 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 13:54:49,970 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 01:54:49" (1/3) ... [2025-02-08 13:54:49,971 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15415fed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 01:54:49, skipping insertion in model container [2025-02-08 13:54:49,971 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:54:49" (2/3) ... [2025-02-08 13:54:49,971 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15415fed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 01:54:49, skipping insertion in model container [2025-02-08 13:54:49,971 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 01:54:49" (3/3) ... [2025-02-08 13:54:49,972 INFO L128 eAbstractionObserver]: Analyzing ICFG 35_double_lock_p3_vs.i [2025-02-08 13:54:49,983 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 13:54:49,985 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 35_double_lock_p3_vs.i that has 3 procedures, 42 locations, 1 initial locations, 2 loop locations, and 8 error locations. [2025-02-08 13:54:49,985 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-08 13:54:50,040 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-02-08 13:54:50,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 48 places, 43 transitions, 94 flow [2025-02-08 13:54:50,096 INFO L124 PetriNetUnfolderBase]: 1/44 cut-off events. [2025-02-08 13:54:50,097 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-08 13:54:50,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51 conditions, 44 events. 1/44 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 55 event pairs, 0 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2025-02-08 13:54:50,101 INFO L82 GeneralOperation]: Start removeDead. Operand has 48 places, 43 transitions, 94 flow [2025-02-08 13:54:50,104 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 47 places, 42 transitions, 91 flow [2025-02-08 13:54:50,110 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 13:54:50,119 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;@74ce56a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 13:54:50,120 INFO L334 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2025-02-08 13:54:50,125 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 13:54:50,126 INFO L124 PetriNetUnfolderBase]: 1/19 cut-off events. [2025-02-08 13:54:50,126 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-08 13:54:50,126 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 13:54:50,131 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2025-02-08 13:54:50,131 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-02-08 13:54:50,139 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 13:54:50,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1559028009, now seen corresponding path program 1 times [2025-02-08 13:54:50,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 13:54:50,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818788197] [2025-02-08 13:54:50,152 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 13:54:50,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 13:54:50,227 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-08 13:54:50,244 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-08 13:54:50,244 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 13:54:50,244 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 13:54:50,245 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-08 13:54:50,249 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-08 13:54:50,256 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-08 13:54:50,256 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 13:54:50,257 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 13:54:50,275 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-08 13:54:50,276 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-02-08 13:54:50,277 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 18 remaining) [2025-02-08 13:54:50,279 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 18 remaining) [2025-02-08 13:54:50,279 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2025-02-08 13:54:50,279 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2025-02-08 13:54:50,280 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2025-02-08 13:54:50,280 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2025-02-08 13:54:50,281 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2025-02-08 13:54:50,282 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2025-02-08 13:54:50,282 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 18 remaining) [2025-02-08 13:54:50,282 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 18 remaining) [2025-02-08 13:54:50,282 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 18 remaining) [2025-02-08 13:54:50,283 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 18 remaining) [2025-02-08 13:54:50,283 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2025-02-08 13:54:50,283 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 18 remaining) [2025-02-08 13:54:50,283 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2025-02-08 13:54:50,283 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2025-02-08 13:54:50,283 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2025-02-08 13:54:50,283 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2025-02-08 13:54:50,283 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-08 13:54:50,284 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2025-02-08 13:54:50,286 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2025-02-08 13:54:50,286 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2025-02-08 13:54:50,342 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-02-08 13:54:50,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 87 places, 79 transitions, 178 flow [2025-02-08 13:54:50,365 INFO L124 PetriNetUnfolderBase]: 1/75 cut-off events. [2025-02-08 13:54:50,365 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-02-08 13:54:50,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87 conditions, 75 events. 1/75 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 158 event pairs, 0 based on Foata normal form. 0/53 useless extension candidates. Maximal degree in co-relation 82. Up to 3 conditions per place. [2025-02-08 13:54:50,366 INFO L82 GeneralOperation]: Start removeDead. Operand has 87 places, 79 transitions, 178 flow [2025-02-08 13:54:50,372 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 77 places, 70 transitions, 153 flow [2025-02-08 13:54:50,373 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 13:54:50,374 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;@74ce56a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 13:54:50,374 INFO L334 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2025-02-08 13:54:50,379 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 13:54:50,379 INFO L124 PetriNetUnfolderBase]: 1/25 cut-off events. [2025-02-08 13:54:50,379 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-02-08 13:54:50,379 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 13:54:50,379 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 13:54:50,379 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2025-02-08 13:54:50,380 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 13:54:50,380 INFO L85 PathProgramCache]: Analyzing trace with hash 1760057802, now seen corresponding path program 1 times [2025-02-08 13:54:50,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 13:54:50,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522124845] [2025-02-08 13:54:50,380 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 13:54:50,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 13:54:50,394 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-08 13:54:50,403 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-08 13:54:50,403 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 13:54:50,404 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 13:54:50,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 13:54:50,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 13:54:50,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522124845] [2025-02-08 13:54:50,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522124845] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 13:54:50,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 13:54:50,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 13:54:50,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429383051] [2025-02-08 13:54:50,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 13:54:50,561 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 13:54:50,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 13:54:50,580 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 13:54:50,580 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 13:54:50,595 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 79 [2025-02-08 13:54:50,598 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 70 transitions, 153 flow. Second operand has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 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) [2025-02-08 13:54:50,598 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 13:54:50,598 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 79 [2025-02-08 13:54:50,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 13:54:51,716 INFO L124 PetriNetUnfolderBase]: 7005/13160 cut-off events. [2025-02-08 13:54:51,717 INFO L125 PetriNetUnfolderBase]: For 174/174 co-relation queries the response was YES. [2025-02-08 13:54:51,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23168 conditions, 13160 events. 7005/13160 cut-off events. For 174/174 co-relation queries the response was YES. Maximal size of possible extension queue 437. Compared 102519 event pairs, 1765 based on Foata normal form. 1583/13414 useless extension candidates. Maximal degree in co-relation 23157. Up to 7901 conditions per place. [2025-02-08 13:54:51,820 INFO L140 encePairwiseOnDemand]: 71/79 looper letters, 75 selfloop transitions, 6 changer transitions 0/111 dead transitions. [2025-02-08 13:54:51,820 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 111 transitions, 407 flow [2025-02-08 13:54:51,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 13:54:51,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 13:54:51,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 263 transitions. [2025-02-08 13:54:51,833 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6658227848101266 [2025-02-08 13:54:51,834 INFO L175 Difference]: Start difference. First operand has 77 places, 70 transitions, 153 flow. Second operand 5 states and 263 transitions. [2025-02-08 13:54:51,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 111 transitions, 407 flow [2025-02-08 13:54:51,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 111 transitions, 406 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 13:54:51,844 INFO L231 Difference]: Finished difference. Result has 81 places, 73 transitions, 192 flow [2025-02-08 13:54:51,846 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=192, PETRI_PLACES=81, PETRI_TRANSITIONS=73} [2025-02-08 13:54:51,848 INFO L279 CegarLoopForPetriNet]: 77 programPoint places, 4 predicate places. [2025-02-08 13:54:51,848 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 73 transitions, 192 flow [2025-02-08 13:54:51,849 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 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) [2025-02-08 13:54:51,849 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 13:54:51,849 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1] [2025-02-08 13:54:51,849 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-08 13:54:51,849 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2025-02-08 13:54:51,849 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 13:54:51,850 INFO L85 PathProgramCache]: Analyzing trace with hash 1104231260, now seen corresponding path program 1 times [2025-02-08 13:54:51,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 13:54:51,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043750429] [2025-02-08 13:54:51,850 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 13:54:51,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 13:54:51,866 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-08 13:54:51,873 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-08 13:54:51,873 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 13:54:51,873 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 13:54:51,873 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-08 13:54:51,876 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-08 13:54:51,884 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-08 13:54:51,885 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 13:54:51,886 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 13:54:51,892 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-08 13:54:51,892 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-02-08 13:54:51,892 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (25 of 26 remaining) [2025-02-08 13:54:51,892 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 26 remaining) [2025-02-08 13:54:51,893 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 26 remaining) [2025-02-08 13:54:51,893 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 26 remaining) [2025-02-08 13:54:51,893 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 26 remaining) [2025-02-08 13:54:51,893 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 26 remaining) [2025-02-08 13:54:51,893 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 26 remaining) [2025-02-08 13:54:51,893 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 26 remaining) [2025-02-08 13:54:51,893 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 26 remaining) [2025-02-08 13:54:51,894 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 26 remaining) [2025-02-08 13:54:51,894 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 26 remaining) [2025-02-08 13:54:51,894 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 26 remaining) [2025-02-08 13:54:51,894 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 26 remaining) [2025-02-08 13:54:51,894 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 26 remaining) [2025-02-08 13:54:51,894 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 26 remaining) [2025-02-08 13:54:51,894 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 26 remaining) [2025-02-08 13:54:51,894 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 26 remaining) [2025-02-08 13:54:51,895 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 26 remaining) [2025-02-08 13:54:51,895 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 26 remaining) [2025-02-08 13:54:51,895 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 26 remaining) [2025-02-08 13:54:51,895 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 26 remaining) [2025-02-08 13:54:51,895 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 26 remaining) [2025-02-08 13:54:51,895 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 26 remaining) [2025-02-08 13:54:51,895 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 26 remaining) [2025-02-08 13:54:51,895 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 26 remaining) [2025-02-08 13:54:51,895 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 26 remaining) [2025-02-08 13:54:51,895 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-08 13:54:51,895 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-02-08 13:54:51,896 WARN L246 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2025-02-08 13:54:51,896 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2025-02-08 13:54:51,974 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-02-08 13:54:51,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 126 places, 115 transitions, 266 flow [2025-02-08 13:54:51,983 INFO L124 PetriNetUnfolderBase]: 1/106 cut-off events. [2025-02-08 13:54:51,983 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2025-02-08 13:54:51,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124 conditions, 106 events. 1/106 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 311 event pairs, 0 based on Foata normal form. 0/74 useless extension candidates. Maximal degree in co-relation 117. Up to 4 conditions per place. [2025-02-08 13:54:51,984 INFO L82 GeneralOperation]: Start removeDead. Operand has 126 places, 115 transitions, 266 flow [2025-02-08 13:54:51,985 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 107 places, 98 transitions, 217 flow [2025-02-08 13:54:51,986 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 13:54:51,986 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;@74ce56a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 13:54:51,986 INFO L334 AbstractCegarLoop]: Starting to check reachability of 34 error locations. [2025-02-08 13:54:51,988 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 13:54:51,988 INFO L124 PetriNetUnfolderBase]: 1/29 cut-off events. [2025-02-08 13:54:51,988 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-02-08 13:54:51,988 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 13:54:51,989 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 13:54:51,989 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2025-02-08 13:54:51,989 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 13:54:51,989 INFO L85 PathProgramCache]: Analyzing trace with hash 1993767568, now seen corresponding path program 1 times [2025-02-08 13:54:51,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 13:54:51,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904752833] [2025-02-08 13:54:51,989 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 13:54:51,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 13:54:51,995 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-08 13:54:51,999 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-08 13:54:51,999 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 13:54:51,999 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 13:54:52,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 13:54:52,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 13:54:52,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904752833] [2025-02-08 13:54:52,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904752833] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 13:54:52,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 13:54:52,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 13:54:52,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318935790] [2025-02-08 13:54:52,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 13:54:52,034 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 13:54:52,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 13:54:52,035 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 13:54:52,035 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 13:54:52,038 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 115 [2025-02-08 13:54:52,039 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 98 transitions, 217 flow. Second operand has 4 states, 4 states have (on average 53.5) internal successors, (214), 4 states have internal predecessors, (214), 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) [2025-02-08 13:54:52,039 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 13:54:52,040 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 115 [2025-02-08 13:54:52,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 13:55:03,400 INFO L124 PetriNetUnfolderBase]: 141677/236192 cut-off events. [2025-02-08 13:55:03,401 INFO L125 PetriNetUnfolderBase]: For 5638/5638 co-relation queries the response was YES. [2025-02-08 13:55:03,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 423081 conditions, 236192 events. 141677/236192 cut-off events. For 5638/5638 co-relation queries the response was YES. Maximal size of possible extension queue 5610. Compared 2330824 event pairs, 39073 based on Foata normal form. 23277/235532 useless extension candidates. Maximal degree in co-relation 423069. Up to 163437 conditions per place. [2025-02-08 13:55:04,838 INFO L140 encePairwiseOnDemand]: 106/115 looper letters, 121 selfloop transitions, 8 changer transitions 0/173 dead transitions. [2025-02-08 13:55:04,838 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 173 transitions, 656 flow [2025-02-08 13:55:04,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 13:55:04,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 13:55:04,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 396 transitions. [2025-02-08 13:55:04,840 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.688695652173913 [2025-02-08 13:55:04,840 INFO L175 Difference]: Start difference. First operand has 107 places, 98 transitions, 217 flow. Second operand 5 states and 396 transitions. [2025-02-08 13:55:04,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 173 transitions, 656 flow [2025-02-08 13:55:04,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 173 transitions, 647 flow, removed 4 selfloop flow, removed 1 redundant places. [2025-02-08 13:55:04,848 INFO L231 Difference]: Finished difference. Result has 111 places, 103 transitions, 271 flow [2025-02-08 13:55:04,848 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=271, PETRI_PLACES=111, PETRI_TRANSITIONS=103} [2025-02-08 13:55:04,848 INFO L279 CegarLoopForPetriNet]: 107 programPoint places, 4 predicate places. [2025-02-08 13:55:04,848 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 103 transitions, 271 flow [2025-02-08 13:55:04,849 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.5) internal successors, (214), 4 states have internal predecessors, (214), 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) [2025-02-08 13:55:04,849 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 13:55:04,849 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 13:55:04,849 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-08 13:55:04,849 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2025-02-08 13:55:04,850 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 13:55:04,850 INFO L85 PathProgramCache]: Analyzing trace with hash 455231313, now seen corresponding path program 1 times [2025-02-08 13:55:04,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 13:55:04,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651637673] [2025-02-08 13:55:04,850 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 13:55:04,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 13:55:04,856 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-08 13:55:04,859 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-08 13:55:04,859 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 13:55:04,859 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 13:55:04,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 13:55:04,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 13:55:04,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651637673] [2025-02-08 13:55:04,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651637673] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 13:55:04,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 13:55:04,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 13:55:04,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81095386] [2025-02-08 13:55:04,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 13:55:04,924 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 13:55:04,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 13:55:04,924 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 13:55:04,924 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 13:55:04,937 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 115 [2025-02-08 13:55:04,937 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 103 transitions, 271 flow. Second operand has 5 states, 5 states have (on average 51.2) internal successors, (256), 5 states have internal predecessors, (256), 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) [2025-02-08 13:55:04,937 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 13:55:04,937 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 115 [2025-02-08 13:55:04,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 13:55:19,352 INFO L124 PetriNetUnfolderBase]: 166457/273584 cut-off events. [2025-02-08 13:55:19,353 INFO L125 PetriNetUnfolderBase]: For 37694/38174 co-relation queries the response was YES. [2025-02-08 13:55:20,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 521865 conditions, 273584 events. 166457/273584 cut-off events. For 37694/38174 co-relation queries the response was YES. Maximal size of possible extension queue 6611. Compared 2704329 event pairs, 42637 based on Foata normal form. 2964/247499 useless extension candidates. Maximal degree in co-relation 521849. Up to 170093 conditions per place. [2025-02-08 13:55:21,374 INFO L140 encePairwiseOnDemand]: 107/115 looper letters, 156 selfloop transitions, 10 changer transitions 0/208 dead transitions. [2025-02-08 13:55:21,374 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 208 transitions, 864 flow [2025-02-08 13:55:21,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 13:55:21,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 13:55:21,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 461 transitions. [2025-02-08 13:55:21,376 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6681159420289855 [2025-02-08 13:55:21,376 INFO L175 Difference]: Start difference. First operand has 111 places, 103 transitions, 271 flow. Second operand 6 states and 461 transitions. [2025-02-08 13:55:21,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 208 transitions, 864 flow [2025-02-08 13:55:21,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 208 transitions, 864 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-08 13:55:21,708 INFO L231 Difference]: Finished difference. Result has 118 places, 105 transitions, 310 flow [2025-02-08 13:55:21,708 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=271, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=310, PETRI_PLACES=118, PETRI_TRANSITIONS=105} [2025-02-08 13:55:21,709 INFO L279 CegarLoopForPetriNet]: 107 programPoint places, 11 predicate places. [2025-02-08 13:55:21,709 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 105 transitions, 310 flow [2025-02-08 13:55:21,709 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 51.2) internal successors, (256), 5 states have internal predecessors, (256), 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) [2025-02-08 13:55:21,709 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 13:55:21,709 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 13:55:21,710 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-08 13:55:21,710 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2025-02-08 13:55:21,710 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 13:55:21,710 INFO L85 PathProgramCache]: Analyzing trace with hash 453116746, now seen corresponding path program 1 times [2025-02-08 13:55:21,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 13:55:21,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514429013] [2025-02-08 13:55:21,710 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 13:55:21,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 13:55:21,716 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-08 13:55:21,718 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-08 13:55:21,718 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 13:55:21,718 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 13:55:21,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 13:55:21,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 13:55:21,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514429013] [2025-02-08 13:55:21,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514429013] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 13:55:21,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 13:55:21,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 13:55:21,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104194086] [2025-02-08 13:55:21,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 13:55:21,755 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 13:55:21,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 13:55:21,755 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 13:55:21,756 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 13:55:21,764 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 115 [2025-02-08 13:55:21,764 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 105 transitions, 310 flow. Second operand has 4 states, 4 states have (on average 54.0) internal successors, (216), 4 states have internal predecessors, (216), 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) [2025-02-08 13:55:21,764 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 13:55:21,764 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 115 [2025-02-08 13:55:21,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand