./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/goblint-regression/04-mutex_04-munge_nr.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 551b0097 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/04-mutex_04-munge_nr.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 09d5acb2f81ee0994352651dad5f891cf0af6948836360f3240d2ea1a246e8a6 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-10 06:43:35,665 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-10 06:43:35,738 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-01-10 06:43:35,741 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-10 06:43:35,745 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-10 06:43:35,758 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-10 06:43:35,759 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-10 06:43:35,759 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-10 06:43:35,759 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-10 06:43:35,759 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-10 06:43:35,760 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-10 06:43:35,760 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-10 06:43:35,760 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-10 06:43:35,760 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-10 06:43:35,760 INFO L153 SettingsManager]: * Use SBE=true [2025-01-10 06:43:35,760 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-10 06:43:35,760 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-10 06:43:35,760 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-10 06:43:35,760 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-10 06:43:35,761 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-10 06:43:35,761 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-10 06:43:35,761 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-10 06:43:35,761 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-10 06:43:35,761 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-10 06:43:35,761 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-01-10 06:43:35,761 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-01-10 06:43:35,761 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-10 06:43:35,761 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-10 06:43:35,761 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-10 06:43:35,761 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-10 06:43:35,761 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-10 06:43:35,761 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 06:43:35,762 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 06:43:35,762 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 06:43:35,762 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 06:43:35,762 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-10 06:43:35,762 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 06:43:35,762 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 06:43:35,762 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 06:43:35,762 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 06:43:35,762 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-10 06:43:35,762 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-10 06:43:35,763 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-10 06:43:35,763 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-10 06:43:35,763 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-10 06:43:35,763 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-10 06:43:35,763 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-10 06:43:35,763 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-10 06:43:35,763 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-10 06:43:35,763 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-10 06:43:35,763 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 -> 09d5acb2f81ee0994352651dad5f891cf0af6948836360f3240d2ea1a246e8a6 [2025-01-10 06:43:35,974 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-10 06:43:35,980 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-10 06:43:35,982 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-10 06:43:35,983 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-10 06:43:35,983 INFO L274 PluginConnector]: CDTParser initialized [2025-01-10 06:43:35,984 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/04-mutex_04-munge_nr.i [2025-01-10 06:43:37,225 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/b9d22b281/e05f4f4d56234bffb6c81119236959e1/FLAG876f3dc95 [2025-01-10 06:43:37,511 INFO L384 CDTParser]: Found 1 translation units. [2025-01-10 06:43:37,515 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/goblint-regression/04-mutex_04-munge_nr.i [2025-01-10 06:43:37,534 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/b9d22b281/e05f4f4d56234bffb6c81119236959e1/FLAG876f3dc95 [2025-01-10 06:43:37,552 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/b9d22b281/e05f4f4d56234bffb6c81119236959e1 [2025-01-10 06:43:37,554 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-10 06:43:37,555 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-10 06:43:37,556 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-10 06:43:37,559 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-10 06:43:37,566 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-10 06:43:37,567 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:43:37" (1/1) ... [2025-01-10 06:43:37,567 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24a3d7f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:43:37, skipping insertion in model container [2025-01-10 06:43:37,568 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:43:37" (1/1) ... [2025-01-10 06:43:37,601 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-10 06:43:37,852 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 06:43:37,862 INFO L200 MainTranslator]: Completed pre-run [2025-01-10 06:43:37,905 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 06:43:37,940 INFO L204 MainTranslator]: Completed translation [2025-01-10 06:43:37,941 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:43:37 WrapperNode [2025-01-10 06:43:37,941 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-10 06:43:37,942 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-10 06:43:37,942 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-10 06:43:37,942 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-10 06:43:37,946 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:43:37" (1/1) ... [2025-01-10 06:43:37,954 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:43:37" (1/1) ... [2025-01-10 06:43:37,966 INFO L138 Inliner]: procedures = 263, calls = 13, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 47 [2025-01-10 06:43:37,966 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-10 06:43:37,967 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-10 06:43:37,967 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-10 06:43:37,967 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-10 06:43:37,973 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:43:37" (1/1) ... [2025-01-10 06:43:37,973 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:43:37" (1/1) ... [2025-01-10 06:43:37,975 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:43:37" (1/1) ... [2025-01-10 06:43:37,984 INFO L175 MemorySlicer]: Split 5 memory accesses to 1 slices as follows [5]. 100 percent of accesses are in the largest equivalence class. The 5 initializations are split as follows [5]. The 0 writes are split as follows [0]. [2025-01-10 06:43:37,985 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:43:37" (1/1) ... [2025-01-10 06:43:37,985 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:43:37" (1/1) ... [2025-01-10 06:43:37,988 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:43:37" (1/1) ... [2025-01-10 06:43:37,988 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:43:37" (1/1) ... [2025-01-10 06:43:37,989 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:43:37" (1/1) ... [2025-01-10 06:43:37,990 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:43:37" (1/1) ... [2025-01-10 06:43:37,990 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:43:37" (1/1) ... [2025-01-10 06:43:37,991 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-10 06:43:37,992 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-10 06:43:37,992 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-10 06:43:37,992 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-10 06:43:37,993 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:43:37" (1/1) ... [2025-01-10 06:43:37,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 06:43:38,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:43:38,032 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) [2025-01-10 06:43:38,038 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 [2025-01-10 06:43:38,049 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-01-10 06:43:38,049 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-01-10 06:43:38,049 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-10 06:43:38,050 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2025-01-10 06:43:38,050 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2025-01-10 06:43:38,050 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-10 06:43:38,050 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-10 06:43:38,050 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-10 06:43:38,051 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-01-10 06:43:38,123 INFO L234 CfgBuilder]: Building ICFG [2025-01-10 06:43:38,124 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-10 06:43:38,201 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-01-10 06:43:38,202 INFO L283 CfgBuilder]: Performing block encoding [2025-01-10 06:43:38,253 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-10 06:43:38,253 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-10 06:43:38,254 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:43:38 BoogieIcfgContainer [2025-01-10 06:43:38,254 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-10 06:43:38,255 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-10 06:43:38,255 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-10 06:43:38,259 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-10 06:43:38,259 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 06:43:37" (1/3) ... [2025-01-10 06:43:38,259 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b3788fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:43:38, skipping insertion in model container [2025-01-10 06:43:38,259 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:43:37" (2/3) ... [2025-01-10 06:43:38,259 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b3788fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:43:38, skipping insertion in model container [2025-01-10 06:43:38,260 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:43:38" (3/3) ... [2025-01-10 06:43:38,260 INFO L128 eAbstractionObserver]: Analyzing ICFG 04-mutex_04-munge_nr.i [2025-01-10 06:43:38,270 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-10 06:43:38,272 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 04-mutex_04-munge_nr.i that has 2 procedures, 24 locations, 1 initial locations, 0 loop locations, and 4 error locations. [2025-01-10 06:43:38,272 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-01-10 06:43:38,311 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2025-01-10 06:43:38,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 27 places, 23 transitions, 53 flow [2025-01-10 06:43:38,365 INFO L124 PetriNetUnfolderBase]: 0/22 cut-off events. [2025-01-10 06:43:38,367 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-01-10 06:43:38,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27 conditions, 22 events. 0/22 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 28 event pairs, 0 based on Foata normal form. 0/18 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2025-01-10 06:43:38,369 INFO L82 GeneralOperation]: Start removeDead. Operand has 27 places, 23 transitions, 53 flow [2025-01-10 06:43:38,373 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 24 places, 20 transitions, 43 flow [2025-01-10 06:43:38,382 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-10 06:43:38,395 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;@16672d05, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-10 06:43:38,395 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2025-01-10 06:43:38,405 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-01-10 06:43:38,409 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2025-01-10 06:43:38,409 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-01-10 06:43:38,409 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:43:38,410 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2025-01-10 06:43:38,410 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-01-10 06:43:38,413 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:43:38,414 INFO L85 PathProgramCache]: Analyzing trace with hash 275175833, now seen corresponding path program 1 times [2025-01-10 06:43:38,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:43:38,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099815507] [2025-01-10 06:43:38,422 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:43:38,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:43:38,487 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-01-10 06:43:38,501 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-01-10 06:43:38,502 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:43:38,502 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:43:38,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:43:38,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:43:38,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099815507] [2025-01-10 06:43:38,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099815507] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:43:38,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:43:38,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-01-10 06:43:38,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088853137] [2025-01-10 06:43:38,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:43:38,601 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-10 06:43:38,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:43:38,621 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-10 06:43:38,622 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 06:43:38,643 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 23 [2025-01-10 06:43:38,645 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 20 transitions, 43 flow. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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) [2025-01-10 06:43:38,646 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:43:38,646 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 23 [2025-01-10 06:43:38,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:43:38,720 INFO L124 PetriNetUnfolderBase]: 33/92 cut-off events. [2025-01-10 06:43:38,721 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-01-10 06:43:38,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 179 conditions, 92 events. 33/92 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 292 event pairs, 18 based on Foata normal form. 5/90 useless extension candidates. Maximal degree in co-relation 170. Up to 69 conditions per place. [2025-01-10 06:43:38,724 INFO L140 encePairwiseOnDemand]: 16/23 looper letters, 17 selfloop transitions, 3 changer transitions 2/26 dead transitions. [2025-01-10 06:43:38,725 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 26 transitions, 99 flow [2025-01-10 06:43:38,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-10 06:43:38,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-10 06:43:38,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 41 transitions. [2025-01-10 06:43:38,734 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5942028985507246 [2025-01-10 06:43:38,735 INFO L175 Difference]: Start difference. First operand has 24 places, 20 transitions, 43 flow. Second operand 3 states and 41 transitions. [2025-01-10 06:43:38,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 26 transitions, 99 flow [2025-01-10 06:43:38,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 26 transitions, 98 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-01-10 06:43:38,740 INFO L231 Difference]: Finished difference. Result has 26 places, 20 transitions, 59 flow [2025-01-10 06:43:38,741 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=59, PETRI_PLACES=26, PETRI_TRANSITIONS=20} [2025-01-10 06:43:38,743 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 2 predicate places. [2025-01-10 06:43:38,744 INFO L471 AbstractCegarLoop]: Abstraction has has 26 places, 20 transitions, 59 flow [2025-01-10 06:43:38,744 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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) [2025-01-10 06:43:38,744 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:43:38,744 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:43:38,744 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-10 06:43:38,744 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-01-10 06:43:38,745 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:43:38,745 INFO L85 PathProgramCache]: Analyzing trace with hash -1247447553, now seen corresponding path program 1 times [2025-01-10 06:43:38,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:43:38,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744256005] [2025-01-10 06:43:38,745 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:43:38,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:43:38,761 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-01-10 06:43:38,770 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-01-10 06:43:38,771 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:43:38,771 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:43:38,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:43:38,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:43:38,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744256005] [2025-01-10 06:43:38,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744256005] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:43:38,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:43:38,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-10 06:43:38,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216625476] [2025-01-10 06:43:38,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:43:38,937 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-10 06:43:38,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:43:38,938 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-10 06:43:38,938 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-10 06:43:38,938 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 23 [2025-01-10 06:43:38,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 20 transitions, 59 flow. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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) [2025-01-10 06:43:38,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:43:38,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 23 [2025-01-10 06:43:38,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:43:39,077 INFO L124 PetriNetUnfolderBase]: 21/119 cut-off events. [2025-01-10 06:43:39,077 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2025-01-10 06:43:39,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 235 conditions, 119 events. 21/119 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 594 event pairs, 1 based on Foata normal form. 4/123 useless extension candidates. Maximal degree in co-relation 224. Up to 32 conditions per place. [2025-01-10 06:43:39,078 INFO L140 encePairwiseOnDemand]: 15/23 looper letters, 16 selfloop transitions, 18 changer transitions 0/42 dead transitions. [2025-01-10 06:43:39,078 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 42 transitions, 186 flow [2025-01-10 06:43:39,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-10 06:43:39,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-01-10 06:43:39,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 99 transitions. [2025-01-10 06:43:39,079 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6149068322981367 [2025-01-10 06:43:39,079 INFO L175 Difference]: Start difference. First operand has 26 places, 20 transitions, 59 flow. Second operand 7 states and 99 transitions. [2025-01-10 06:43:39,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 42 transitions, 186 flow [2025-01-10 06:43:39,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 42 transitions, 178 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-01-10 06:43:39,081 INFO L231 Difference]: Finished difference. Result has 35 places, 34 transitions, 160 flow [2025-01-10 06:43:39,081 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=160, PETRI_PLACES=35, PETRI_TRANSITIONS=34} [2025-01-10 06:43:39,081 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 11 predicate places. [2025-01-10 06:43:39,081 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 34 transitions, 160 flow [2025-01-10 06:43:39,081 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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) [2025-01-10 06:43:39,081 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:43:39,081 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:43:39,081 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-10 06:43:39,082 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-01-10 06:43:39,082 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:43:39,082 INFO L85 PathProgramCache]: Analyzing trace with hash 1937954055, now seen corresponding path program 2 times [2025-01-10 06:43:39,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:43:39,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006902135] [2025-01-10 06:43:39,082 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 06:43:39,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:43:39,089 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 11 statements into 1 equivalence classes. [2025-01-10 06:43:39,096 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-01-10 06:43:39,097 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-01-10 06:43:39,097 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:43:39,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:43:39,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:43:39,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006902135] [2025-01-10 06:43:39,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006902135] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:43:39,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:43:39,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-10 06:43:39,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286375168] [2025-01-10 06:43:39,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:43:39,187 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-10 06:43:39,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:43:39,187 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-10 06:43:39,187 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-10 06:43:39,187 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 23 [2025-01-10 06:43:39,188 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 34 transitions, 160 flow. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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) [2025-01-10 06:43:39,188 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:43:39,188 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 23 [2025-01-10 06:43:39,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:43:39,293 INFO L124 PetriNetUnfolderBase]: 16/100 cut-off events. [2025-01-10 06:43:39,293 INFO L125 PetriNetUnfolderBase]: For 63/63 co-relation queries the response was YES. [2025-01-10 06:43:39,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 277 conditions, 100 events. 16/100 cut-off events. For 63/63 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 446 event pairs, 0 based on Foata normal form. 4/104 useless extension candidates. Maximal degree in co-relation 262. Up to 26 conditions per place. [2025-01-10 06:43:39,294 INFO L140 encePairwiseOnDemand]: 15/23 looper letters, 17 selfloop transitions, 20 changer transitions 0/45 dead transitions. [2025-01-10 06:43:39,294 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 45 transitions, 290 flow [2025-01-10 06:43:39,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-10 06:43:39,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-01-10 06:43:39,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 87 transitions. [2025-01-10 06:43:39,295 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6304347826086957 [2025-01-10 06:43:39,295 INFO L175 Difference]: Start difference. First operand has 35 places, 34 transitions, 160 flow. Second operand 6 states and 87 transitions. [2025-01-10 06:43:39,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 45 transitions, 290 flow [2025-01-10 06:43:39,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 45 transitions, 284 flow, removed 3 selfloop flow, removed 0 redundant places. [2025-01-10 06:43:39,300 INFO L231 Difference]: Finished difference. Result has 44 places, 40 transitions, 275 flow [2025-01-10 06:43:39,301 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=275, PETRI_PLACES=44, PETRI_TRANSITIONS=40} [2025-01-10 06:43:39,301 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 20 predicate places. [2025-01-10 06:43:39,301 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 40 transitions, 275 flow [2025-01-10 06:43:39,301 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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) [2025-01-10 06:43:39,302 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:43:39,302 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:43:39,302 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-01-10 06:43:39,302 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-01-10 06:43:39,302 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:43:39,302 INFO L85 PathProgramCache]: Analyzing trace with hash -1180689778, now seen corresponding path program 1 times [2025-01-10 06:43:39,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:43:39,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297972194] [2025-01-10 06:43:39,302 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:43:39,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:43:39,310 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-01-10 06:43:39,312 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-01-10 06:43:39,313 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:43:39,313 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:43:39,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:43:39,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:43:39,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297972194] [2025-01-10 06:43:39,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297972194] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:43:39,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:43:39,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-10 06:43:39,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441706445] [2025-01-10 06:43:39,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:43:39,393 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-10 06:43:39,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:43:39,394 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-10 06:43:39,394 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-10 06:43:39,395 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 23 [2025-01-10 06:43:39,395 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 40 transitions, 275 flow. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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) [2025-01-10 06:43:39,395 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:43:39,395 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 23 [2025-01-10 06:43:39,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:43:39,474 INFO L124 PetriNetUnfolderBase]: 14/86 cut-off events. [2025-01-10 06:43:39,474 INFO L125 PetriNetUnfolderBase]: For 140/140 co-relation queries the response was YES. [2025-01-10 06:43:39,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 301 conditions, 86 events. 14/86 cut-off events. For 140/140 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 336 event pairs, 0 based on Foata normal form. 2/88 useless extension candidates. Maximal degree in co-relation 281. Up to 20 conditions per place. [2025-01-10 06:43:39,475 INFO L140 encePairwiseOnDemand]: 16/23 looper letters, 13 selfloop transitions, 22 changer transitions 0/43 dead transitions. [2025-01-10 06:43:39,476 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 43 transitions, 358 flow [2025-01-10 06:43:39,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-10 06:43:39,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-01-10 06:43:39,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 87 transitions. [2025-01-10 06:43:39,477 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5403726708074534 [2025-01-10 06:43:39,477 INFO L175 Difference]: Start difference. First operand has 44 places, 40 transitions, 275 flow. Second operand 7 states and 87 transitions. [2025-01-10 06:43:39,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 43 transitions, 358 flow [2025-01-10 06:43:39,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 43 transitions, 324 flow, removed 8 selfloop flow, removed 3 redundant places. [2025-01-10 06:43:39,480 INFO L231 Difference]: Finished difference. Result has 48 places, 41 transitions, 299 flow [2025-01-10 06:43:39,480 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=299, PETRI_PLACES=48, PETRI_TRANSITIONS=41} [2025-01-10 06:43:39,481 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 24 predicate places. [2025-01-10 06:43:39,481 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 41 transitions, 299 flow [2025-01-10 06:43:39,481 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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) [2025-01-10 06:43:39,481 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:43:39,481 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:43:39,481 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-01-10 06:43:39,481 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-01-10 06:43:39,486 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:43:39,486 INFO L85 PathProgramCache]: Analyzing trace with hash 845137821, now seen corresponding path program 1 times [2025-01-10 06:43:39,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:43:39,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880251058] [2025-01-10 06:43:39,486 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:43:39,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:43:39,492 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-01-10 06:43:39,495 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-01-10 06:43:39,495 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:43:39,495 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:43:39,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:43:39,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:43:39,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880251058] [2025-01-10 06:43:39,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880251058] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:43:39,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:43:39,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-10 06:43:39,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253746239] [2025-01-10 06:43:39,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:43:39,554 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 06:43:39,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:43:39,554 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 06:43:39,558 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 06:43:39,565 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 23 [2025-01-10 06:43:39,566 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 41 transitions, 299 flow. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 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) [2025-01-10 06:43:39,569 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:43:39,569 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 23 [2025-01-10 06:43:39,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:43:39,621 INFO L124 PetriNetUnfolderBase]: 18/84 cut-off events. [2025-01-10 06:43:39,622 INFO L125 PetriNetUnfolderBase]: For 171/171 co-relation queries the response was YES. [2025-01-10 06:43:39,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 331 conditions, 84 events. 18/84 cut-off events. For 171/171 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 289 event pairs, 0 based on Foata normal form. 6/89 useless extension candidates. Maximal degree in co-relation 312. Up to 46 conditions per place. [2025-01-10 06:43:39,624 INFO L140 encePairwiseOnDemand]: 18/23 looper letters, 44 selfloop transitions, 3 changer transitions 0/51 dead transitions. [2025-01-10 06:43:39,624 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 51 transitions, 503 flow [2025-01-10 06:43:39,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 06:43:39,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-01-10 06:43:39,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 40 transitions. [2025-01-10 06:43:39,626 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43478260869565216 [2025-01-10 06:43:39,626 INFO L175 Difference]: Start difference. First operand has 48 places, 41 transitions, 299 flow. Second operand 4 states and 40 transitions. [2025-01-10 06:43:39,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 51 transitions, 503 flow [2025-01-10 06:43:39,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 51 transitions, 474 flow, removed 6 selfloop flow, removed 2 redundant places. [2025-01-10 06:43:39,632 INFO L231 Difference]: Finished difference. Result has 47 places, 39 transitions, 277 flow [2025-01-10 06:43:39,632 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=271, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=277, PETRI_PLACES=47, PETRI_TRANSITIONS=39} [2025-01-10 06:43:39,632 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 23 predicate places. [2025-01-10 06:43:39,633 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 39 transitions, 277 flow [2025-01-10 06:43:39,633 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 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) [2025-01-10 06:43:39,633 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:43:39,633 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:43:39,633 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-01-10 06:43:39,633 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-01-10 06:43:39,634 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:43:39,634 INFO L85 PathProgramCache]: Analyzing trace with hash -1657685929, now seen corresponding path program 1 times [2025-01-10 06:43:39,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:43:39,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676496240] [2025-01-10 06:43:39,634 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:43:39,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:43:39,638 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-01-10 06:43:39,640 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-01-10 06:43:39,641 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:43:39,641 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:43:39,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:43:39,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:43:39,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676496240] [2025-01-10 06:43:39,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676496240] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:43:39,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:43:39,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-10 06:43:39,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805485951] [2025-01-10 06:43:39,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:43:39,664 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 06:43:39,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:43:39,665 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 06:43:39,665 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-01-10 06:43:39,675 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 23 [2025-01-10 06:43:39,675 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 39 transitions, 277 flow. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 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) [2025-01-10 06:43:39,675 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:43:39,675 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 23 [2025-01-10 06:43:39,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:43:39,705 INFO L124 PetriNetUnfolderBase]: 14/72 cut-off events. [2025-01-10 06:43:39,705 INFO L125 PetriNetUnfolderBase]: For 132/132 co-relation queries the response was YES. [2025-01-10 06:43:39,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 286 conditions, 72 events. 14/72 cut-off events. For 132/132 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 242 event pairs, 0 based on Foata normal form. 6/76 useless extension candidates. Maximal degree in co-relation 266. Up to 36 conditions per place. [2025-01-10 06:43:39,706 INFO L140 encePairwiseOnDemand]: 18/23 looper letters, 0 selfloop transitions, 0 changer transitions 49/49 dead transitions. [2025-01-10 06:43:39,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 49 transitions, 468 flow [2025-01-10 06:43:39,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 06:43:39,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-01-10 06:43:39,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 38 transitions. [2025-01-10 06:43:39,707 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.41304347826086957 [2025-01-10 06:43:39,707 INFO L175 Difference]: Start difference. First operand has 47 places, 39 transitions, 277 flow. Second operand 4 states and 38 transitions. [2025-01-10 06:43:39,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 49 transitions, 468 flow [2025-01-10 06:43:39,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 49 transitions, 461 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-01-10 06:43:39,713 INFO L231 Difference]: Finished difference. Result has 45 places, 0 transitions, 0 flow [2025-01-10 06:43:39,713 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=45, PETRI_TRANSITIONS=0} [2025-01-10 06:43:39,714 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 21 predicate places. [2025-01-10 06:43:39,714 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 0 transitions, 0 flow [2025-01-10 06:43:39,714 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 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) [2025-01-10 06:43:39,716 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 7 remaining) [2025-01-10 06:43:39,720 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 7 remaining) [2025-01-10 06:43:39,720 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2025-01-10 06:43:39,720 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 7 remaining) [2025-01-10 06:43:39,720 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 7 remaining) [2025-01-10 06:43:39,720 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 7 remaining) [2025-01-10 06:43:39,720 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 7 remaining) [2025-01-10 06:43:39,720 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-01-10 06:43:39,720 INFO L422 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1] [2025-01-10 06:43:39,723 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-01-10 06:43:39,727 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-01-10 06:43:39,735 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 06:43:39 BasicIcfg [2025-01-10 06:43:39,735 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-01-10 06:43:39,735 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-01-10 06:43:39,735 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-01-10 06:43:39,735 INFO L274 PluginConnector]: Witness Printer initialized [2025-01-10 06:43:39,736 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:43:38" (3/4) ... [2025-01-10 06:43:39,737 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-01-10 06:43:39,739 INFO L362 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2025-01-10 06:43:39,744 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2025-01-10 06:43:39,748 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2025-01-10 06:43:39,748 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2025-01-10 06:43:39,839 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-01-10 06:43:39,840 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.yml [2025-01-10 06:43:39,840 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-01-10 06:43:39,840 INFO L158 Benchmark]: Toolchain (without parser) took 2285.54ms. Allocated memory is still 167.8MB. Free memory was 130.1MB in the beginning and 105.7MB in the end (delta: 24.5MB). Peak memory consumption was 23.8MB. Max. memory is 16.1GB. [2025-01-10 06:43:39,841 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 226.5MB. Free memory is still 148.2MB. There was no memory consumed. Max. memory is 16.1GB. [2025-01-10 06:43:39,841 INFO L158 Benchmark]: CACSL2BoogieTranslator took 385.78ms. Allocated memory is still 167.8MB. Free memory was 129.2MB in the beginning and 103.0MB in the end (delta: 26.1MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-01-10 06:43:39,841 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.43ms. Allocated memory is still 167.8MB. Free memory was 103.0MB in the beginning and 101.1MB in the end (delta: 2.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-01-10 06:43:39,844 INFO L158 Benchmark]: Boogie Preprocessor took 24.91ms. Allocated memory is still 167.8MB. Free memory was 101.1MB in the beginning and 99.1MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-10 06:43:39,845 INFO L158 Benchmark]: RCFGBuilder took 261.86ms. Allocated memory is still 167.8MB. Free memory was 99.1MB in the beginning and 82.3MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-01-10 06:43:39,845 INFO L158 Benchmark]: TraceAbstraction took 1479.60ms. Allocated memory is still 167.8MB. Free memory was 81.3MB in the beginning and 111.7MB in the end (delta: -30.4MB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-10 06:43:39,845 INFO L158 Benchmark]: Witness Printer took 104.42ms. Allocated memory is still 167.8MB. Free memory was 111.7MB in the beginning and 105.7MB in the end (delta: 6.1MB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-10 06:43:39,846 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 226.5MB. Free memory is still 148.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 385.78ms. Allocated memory is still 167.8MB. Free memory was 129.2MB in the beginning and 103.0MB in the end (delta: 26.1MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 24.43ms. Allocated memory is still 167.8MB. Free memory was 103.0MB in the beginning and 101.1MB in the end (delta: 2.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 24.91ms. Allocated memory is still 167.8MB. Free memory was 101.1MB in the beginning and 99.1MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 261.86ms. Allocated memory is still 167.8MB. Free memory was 99.1MB in the beginning and 82.3MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 1479.60ms. Allocated memory is still 167.8MB. Free memory was 81.3MB in the beginning and 111.7MB in the end (delta: -30.4MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 104.42ms. Allocated memory is still 167.8MB. Free memory was 111.7MB in the beginning and 105.7MB in the end (delta: 6.1MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 921]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 921]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 921]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 921]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 35 locations, 7 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1.4s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 112 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 94 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 20 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 322 IncrementalHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 20 mSolverCounterUnsat, 0 mSDtfsCounter, 322 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=299occurred in iteration=4, InterpolantAutomatonStates: 31, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 64 NumberOfCodeBlocks, 64 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 58 ConstructedInterpolants, 0 QuantifiedInterpolants, 186 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-01-10 06:43:39,869 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE