./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/goblint-regression/13-privatized_24-multiple-protecting_true.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/13-privatized_24-multiple-protecting_true.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 5a41a1715a056c3cefb9e5b0430ae444adde5aa2f4e6078578085bf381d921cf --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-10 06:44:54,334 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-10 06:44:54,378 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-01-10 06:44:54,381 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-10 06:44:54,381 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-10 06:44:54,396 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-10 06:44:54,397 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-10 06:44:54,397 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-10 06:44:54,397 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-10 06:44:54,397 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-10 06:44:54,397 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-10 06:44:54,397 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-10 06:44:54,397 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-10 06:44:54,397 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-10 06:44:54,397 INFO L153 SettingsManager]: * Use SBE=true [2025-01-10 06:44:54,397 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-10 06:44:54,397 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-10 06:44:54,397 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-10 06:44:54,398 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-10 06:44:54,398 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-10 06:44:54,398 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-10 06:44:54,398 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-10 06:44:54,398 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-10 06:44:54,398 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-10 06:44:54,398 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-01-10 06:44:54,398 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-01-10 06:44:54,398 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-10 06:44:54,398 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-10 06:44:54,398 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-10 06:44:54,398 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-10 06:44:54,398 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-10 06:44:54,398 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 06:44:54,398 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 06:44:54,398 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 06:44:54,398 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 06:44:54,398 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-10 06:44:54,398 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 06:44:54,399 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 06:44:54,399 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 06:44:54,399 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 06:44:54,399 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-10 06:44:54,399 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-10 06:44:54,399 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-10 06:44:54,399 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-10 06:44:54,399 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-10 06:44:54,399 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-10 06:44:54,399 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-10 06:44:54,399 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-10 06:44:54,399 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-10 06:44:54,399 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-10 06:44:54,399 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 -> 5a41a1715a056c3cefb9e5b0430ae444adde5aa2f4e6078578085bf381d921cf [2025-01-10 06:44:54,612 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-10 06:44:54,617 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-10 06:44:54,619 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-10 06:44:54,620 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-10 06:44:54,620 INFO L274 PluginConnector]: CDTParser initialized [2025-01-10 06:44:54,621 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/13-privatized_24-multiple-protecting_true.i [2025-01-10 06:44:55,949 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/c7e322503/7321f098c9534245b74e7a74c38de629/FLAGe4d1899e1 [2025-01-10 06:44:56,308 INFO L384 CDTParser]: Found 1 translation units. [2025-01-10 06:44:56,308 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/goblint-regression/13-privatized_24-multiple-protecting_true.i [2025-01-10 06:44:56,326 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/c7e322503/7321f098c9534245b74e7a74c38de629/FLAGe4d1899e1 [2025-01-10 06:44:56,543 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/c7e322503/7321f098c9534245b74e7a74c38de629 [2025-01-10 06:44:56,546 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-10 06:44:56,548 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-10 06:44:56,550 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-10 06:44:56,550 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-10 06:44:56,553 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-10 06:44:56,554 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:44:56" (1/1) ... [2025-01-10 06:44:56,554 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5deddda6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:44:56, skipping insertion in model container [2025-01-10 06:44:56,555 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:44:56" (1/1) ... [2025-01-10 06:44:56,579 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-10 06:44:56,901 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 06:44:56,920 INFO L200 MainTranslator]: Completed pre-run [2025-01-10 06:44:56,963 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 06:44:56,995 INFO L204 MainTranslator]: Completed translation [2025-01-10 06:44:56,997 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:44:56 WrapperNode [2025-01-10 06:44:56,998 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-10 06:44:56,998 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-10 06:44:56,999 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-10 06:44:56,999 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-10 06:44:57,006 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:44:56" (1/1) ... [2025-01-10 06:44:57,018 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:44:56" (1/1) ... [2025-01-10 06:44:57,038 INFO L138 Inliner]: procedures = 162, calls = 54, calls flagged for inlining = 7, calls inlined = 10, statements flattened = 109 [2025-01-10 06:44:57,038 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-10 06:44:57,039 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-10 06:44:57,040 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-10 06:44:57,040 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-10 06:44:57,046 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:44:56" (1/1) ... [2025-01-10 06:44:57,047 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:44:56" (1/1) ... [2025-01-10 06:44:57,052 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:44:56" (1/1) ... [2025-01-10 06:44:57,067 INFO L175 MemorySlicer]: Split 17 memory accesses to 4 slices as follows [2, 5, 5, 5]. 29 percent of accesses are in the largest equivalence class. The 17 initializations are split as follows [2, 5, 5, 5]. The 0 writes are split as follows [0, 0, 0, 0]. [2025-01-10 06:44:57,068 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:44:56" (1/1) ... [2025-01-10 06:44:57,068 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:44:56" (1/1) ... [2025-01-10 06:44:57,075 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:44:56" (1/1) ... [2025-01-10 06:44:57,077 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:44:56" (1/1) ... [2025-01-10 06:44:57,079 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:44:56" (1/1) ... [2025-01-10 06:44:57,080 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:44:56" (1/1) ... [2025-01-10 06:44:57,081 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:44:56" (1/1) ... [2025-01-10 06:44:57,082 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-10 06:44:57,083 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-10 06:44:57,083 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-10 06:44:57,083 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-10 06:44:57,084 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:44:56" (1/1) ... [2025-01-10 06:44:57,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 06:44:57,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:44:57,112 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 06:44:57,118 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 06:44:57,139 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-01-10 06:44:57,139 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-10 06:44:57,139 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2025-01-10 06:44:57,139 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2025-01-10 06:44:57,139 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-10 06:44:57,139 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-01-10 06:44:57,140 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-01-10 06:44:57,140 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-01-10 06:44:57,140 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-01-10 06:44:57,140 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-10 06:44:57,140 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-10 06:44:57,140 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 06:44:57,297 INFO L234 CfgBuilder]: Building ICFG [2025-01-10 06:44:57,303 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-10 06:44:57,725 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-01-10 06:44:57,726 INFO L283 CfgBuilder]: Performing block encoding [2025-01-10 06:44:57,905 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-10 06:44:57,906 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-10 06:44:57,906 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:44:57 BoogieIcfgContainer [2025-01-10 06:44:57,906 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-10 06:44:57,908 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-10 06:44:57,909 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-10 06:44:57,913 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-10 06:44:57,914 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 06:44:56" (1/3) ... [2025-01-10 06:44:57,915 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62148088 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:44:57, skipping insertion in model container [2025-01-10 06:44:57,915 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:44:56" (2/3) ... [2025-01-10 06:44:57,915 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62148088 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:44:57, skipping insertion in model container [2025-01-10 06:44:57,916 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:44:57" (3/3) ... [2025-01-10 06:44:57,917 INFO L128 eAbstractionObserver]: Analyzing ICFG 13-privatized_24-multiple-protecting_true.i [2025-01-10 06:44:57,932 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-10 06:44:57,934 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 13-privatized_24-multiple-protecting_true.i that has 2 procedures, 72 locations, 1 initial locations, 0 loop locations, and 8 error locations. [2025-01-10 06:44:57,934 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-01-10 06:44:57,984 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2025-01-10 06:44:58,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 75 places, 71 transitions, 149 flow [2025-01-10 06:44:58,058 INFO L124 PetriNetUnfolderBase]: 0/70 cut-off events. [2025-01-10 06:44:58,060 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-01-10 06:44:58,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 70 events. 0/70 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 69 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2025-01-10 06:44:58,063 INFO L82 GeneralOperation]: Start removeDead. Operand has 75 places, 71 transitions, 149 flow [2025-01-10 06:44:58,068 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 67 places, 63 transitions, 129 flow [2025-01-10 06:44:58,074 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-10 06:44:58,082 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;@505424d9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-10 06:44:58,083 INFO L334 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2025-01-10 06:44:58,092 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-01-10 06:44:58,092 INFO L124 PetriNetUnfolderBase]: 0/13 cut-off events. [2025-01-10 06:44:58,092 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-01-10 06:44:58,092 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:44:58,097 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:44:58,097 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2025-01-10 06:44:58,106 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:44:58,106 INFO L85 PathProgramCache]: Analyzing trace with hash -1884511695, now seen corresponding path program 1 times [2025-01-10 06:44:58,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:44:58,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930161607] [2025-01-10 06:44:58,121 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:44:58,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:44:58,194 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-01-10 06:44:58,212 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-01-10 06:44:58,213 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:44:58,213 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:44:58,427 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 06:44:58,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:44:58,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930161607] [2025-01-10 06:44:58,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930161607] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:44:58,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:44:58,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-10 06:44:58,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166671507] [2025-01-10 06:44:58,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:44:58,437 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 06:44:58,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:44:58,465 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 06:44:58,469 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 06:44:58,491 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 71 [2025-01-10 06:44:58,494 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 63 transitions, 129 flow. Second operand has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 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 06:44:58,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:44:58,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 71 [2025-01-10 06:44:58,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:44:58,819 INFO L124 PetriNetUnfolderBase]: 457/1372 cut-off events. [2025-01-10 06:44:58,819 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-01-10 06:44:58,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2355 conditions, 1372 events. 457/1372 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 9000 event pairs, 34 based on Foata normal form. 18/1335 useless extension candidates. Maximal degree in co-relation 2346. Up to 481 conditions per place. [2025-01-10 06:44:58,830 INFO L140 encePairwiseOnDemand]: 62/71 looper letters, 76 selfloop transitions, 7 changer transitions 0/108 dead transitions. [2025-01-10 06:44:58,830 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 108 transitions, 385 flow [2025-01-10 06:44:58,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 06:44:58,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-01-10 06:44:58,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 193 transitions. [2025-01-10 06:44:58,840 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6795774647887324 [2025-01-10 06:44:58,841 INFO L175 Difference]: Start difference. First operand has 67 places, 63 transitions, 129 flow. Second operand 4 states and 193 transitions. [2025-01-10 06:44:58,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 108 transitions, 385 flow [2025-01-10 06:44:58,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 108 transitions, 384 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-01-10 06:44:58,847 INFO L231 Difference]: Finished difference. Result has 69 places, 65 transitions, 166 flow [2025-01-10 06:44:58,849 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=166, PETRI_PLACES=69, PETRI_TRANSITIONS=65} [2025-01-10 06:44:58,851 INFO L279 CegarLoopForPetriNet]: 67 programPoint places, 2 predicate places. [2025-01-10 06:44:58,851 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 65 transitions, 166 flow [2025-01-10 06:44:58,852 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 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 06:44:58,852 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:44:58,852 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:44:58,852 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-10 06:44:58,852 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2025-01-10 06:44:58,853 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:44:58,853 INFO L85 PathProgramCache]: Analyzing trace with hash -2059958155, now seen corresponding path program 1 times [2025-01-10 06:44:58,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:44:58,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999530451] [2025-01-10 06:44:58,853 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:44:58,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:44:58,869 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-01-10 06:44:58,877 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-01-10 06:44:58,877 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:44:58,877 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:44:59,045 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 06:44:59,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:44:59,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999530451] [2025-01-10 06:44:59,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999530451] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:44:59,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:44:59,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-10 06:44:59,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201597635] [2025-01-10 06:44:59,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:44:59,047 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-10 06:44:59,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:44:59,048 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-10 06:44:59,048 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-10 06:44:59,073 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 71 [2025-01-10 06:44:59,074 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 65 transitions, 166 flow. Second operand has 6 states, 6 states have (on average 26.666666666666668) internal successors, (160), 6 states have internal predecessors, (160), 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 06:44:59,074 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:44:59,074 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 71 [2025-01-10 06:44:59,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:44:59,392 INFO L124 PetriNetUnfolderBase]: 407/1220 cut-off events. [2025-01-10 06:44:59,392 INFO L125 PetriNetUnfolderBase]: For 215/215 co-relation queries the response was YES. [2025-01-10 06:44:59,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2282 conditions, 1220 events. 407/1220 cut-off events. For 215/215 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 7729 event pairs, 34 based on Foata normal form. 33/1216 useless extension candidates. Maximal degree in co-relation 2270. Up to 375 conditions per place. [2025-01-10 06:44:59,398 INFO L140 encePairwiseOnDemand]: 62/71 looper letters, 100 selfloop transitions, 8 changer transitions 0/131 dead transitions. [2025-01-10 06:44:59,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 131 transitions, 516 flow [2025-01-10 06:44:59,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-10 06:44:59,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-01-10 06:44:59,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 265 transitions. [2025-01-10 06:44:59,400 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6220657276995305 [2025-01-10 06:44:59,400 INFO L175 Difference]: Start difference. First operand has 69 places, 65 transitions, 166 flow. Second operand 6 states and 265 transitions. [2025-01-10 06:44:59,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 131 transitions, 516 flow [2025-01-10 06:44:59,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 131 transitions, 507 flow, removed 1 selfloop flow, removed 2 redundant places. [2025-01-10 06:44:59,403 INFO L231 Difference]: Finished difference. Result has 71 places, 63 transitions, 165 flow [2025-01-10 06:44:59,403 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=165, PETRI_PLACES=71, PETRI_TRANSITIONS=63} [2025-01-10 06:44:59,404 INFO L279 CegarLoopForPetriNet]: 67 programPoint places, 4 predicate places. [2025-01-10 06:44:59,404 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 63 transitions, 165 flow [2025-01-10 06:44:59,404 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.666666666666668) internal successors, (160), 6 states have internal predecessors, (160), 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 06:44:59,404 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:44:59,404 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:44:59,405 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-10 06:44:59,405 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2025-01-10 06:44:59,405 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:44:59,405 INFO L85 PathProgramCache]: Analyzing trace with hash 565807163, now seen corresponding path program 1 times [2025-01-10 06:44:59,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:44:59,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678136079] [2025-01-10 06:44:59,405 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:44:59,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:44:59,413 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-01-10 06:44:59,417 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-01-10 06:44:59,418 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:44:59,418 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:44:59,475 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 06:44:59,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:44:59,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678136079] [2025-01-10 06:44:59,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678136079] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:44:59,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:44:59,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-10 06:44:59,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276932676] [2025-01-10 06:44:59,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:44:59,476 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-10 06:44:59,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:44:59,477 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-10 06:44:59,477 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-01-10 06:44:59,487 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 71 [2025-01-10 06:44:59,488 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 63 transitions, 165 flow. Second operand has 6 states, 6 states have (on average 26.666666666666668) internal successors, (160), 6 states have internal predecessors, (160), 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 06:44:59,488 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:44:59,488 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 71 [2025-01-10 06:44:59,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:44:59,815 INFO L124 PetriNetUnfolderBase]: 393/1188 cut-off events. [2025-01-10 06:44:59,816 INFO L125 PetriNetUnfolderBase]: For 263/263 co-relation queries the response was YES. [2025-01-10 06:44:59,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2255 conditions, 1188 events. 393/1188 cut-off events. For 263/263 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 7484 event pairs, 34 based on Foata normal form. 18/1169 useless extension candidates. Maximal degree in co-relation 2242. Up to 416 conditions per place. [2025-01-10 06:44:59,825 INFO L140 encePairwiseOnDemand]: 62/71 looper letters, 85 selfloop transitions, 8 changer transitions 0/116 dead transitions. [2025-01-10 06:44:59,825 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 116 transitions, 463 flow [2025-01-10 06:44:59,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-10 06:44:59,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-01-10 06:44:59,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 244 transitions. [2025-01-10 06:44:59,827 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5727699530516432 [2025-01-10 06:44:59,827 INFO L175 Difference]: Start difference. First operand has 71 places, 63 transitions, 165 flow. Second operand 6 states and 244 transitions. [2025-01-10 06:44:59,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 116 transitions, 463 flow [2025-01-10 06:44:59,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 116 transitions, 442 flow, removed 0 selfloop flow, removed 6 redundant places. [2025-01-10 06:44:59,833 INFO L231 Difference]: Finished difference. Result has 69 places, 62 transitions, 158 flow [2025-01-10 06:44:59,834 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=158, PETRI_PLACES=69, PETRI_TRANSITIONS=62} [2025-01-10 06:44:59,834 INFO L279 CegarLoopForPetriNet]: 67 programPoint places, 2 predicate places. [2025-01-10 06:44:59,834 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 62 transitions, 158 flow [2025-01-10 06:44:59,835 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.666666666666668) internal successors, (160), 6 states have internal predecessors, (160), 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 06:44:59,835 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:44:59,835 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:44:59,835 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-01-10 06:44:59,835 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2025-01-10 06:44:59,835 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:44:59,835 INFO L85 PathProgramCache]: Analyzing trace with hash -457855941, now seen corresponding path program 1 times [2025-01-10 06:44:59,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:44:59,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430551352] [2025-01-10 06:44:59,836 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:44:59,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:44:59,855 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-01-10 06:44:59,869 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-01-10 06:44:59,869 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:44:59,869 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:44:59,983 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 06:44:59,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:44:59,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430551352] [2025-01-10 06:44:59,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430551352] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:44:59,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:44:59,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-10 06:44:59,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904731264] [2025-01-10 06:44:59,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:44:59,985 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 06:44:59,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:44:59,987 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 06:44:59,987 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 06:44:59,995 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 71 [2025-01-10 06:44:59,996 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 62 transitions, 158 flow. Second operand has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 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 06:44:59,997 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:44:59,997 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 71 [2025-01-10 06:44:59,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:45:00,336 INFO L124 PetriNetUnfolderBase]: 422/1284 cut-off events. [2025-01-10 06:45:00,336 INFO L125 PetriNetUnfolderBase]: For 182/184 co-relation queries the response was YES. [2025-01-10 06:45:00,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2417 conditions, 1284 events. 422/1284 cut-off events. For 182/184 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 8118 event pairs, 233 based on Foata normal form. 32/1279 useless extension candidates. Maximal degree in co-relation 2405. Up to 629 conditions per place. [2025-01-10 06:45:00,340 INFO L140 encePairwiseOnDemand]: 65/71 looper letters, 76 selfloop transitions, 4 changer transitions 0/101 dead transitions. [2025-01-10 06:45:00,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 101 transitions, 428 flow [2025-01-10 06:45:00,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 06:45:00,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-01-10 06:45:00,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 183 transitions. [2025-01-10 06:45:00,342 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6443661971830986 [2025-01-10 06:45:00,342 INFO L175 Difference]: Start difference. First operand has 69 places, 62 transitions, 158 flow. Second operand 4 states and 183 transitions. [2025-01-10 06:45:00,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 101 transitions, 428 flow [2025-01-10 06:45:00,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 101 transitions, 412 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-01-10 06:45:00,345 INFO L231 Difference]: Finished difference. Result has 67 places, 61 transitions, 159 flow [2025-01-10 06:45:00,345 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=159, PETRI_PLACES=67, PETRI_TRANSITIONS=61} [2025-01-10 06:45:00,346 INFO L279 CegarLoopForPetriNet]: 67 programPoint places, 0 predicate places. [2025-01-10 06:45:00,346 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 61 transitions, 159 flow [2025-01-10 06:45:00,347 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 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 06:45:00,347 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:45:00,347 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:45:00,347 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-01-10 06:45:00,347 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2025-01-10 06:45:00,347 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:45:00,347 INFO L85 PathProgramCache]: Analyzing trace with hash 1645447807, now seen corresponding path program 1 times [2025-01-10 06:45:00,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:45:00,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920541131] [2025-01-10 06:45:00,348 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:45:00,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:45:00,358 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 30 statements into 1 equivalence classes. [2025-01-10 06:45:00,368 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 30 of 30 statements. [2025-01-10 06:45:00,368 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:45:00,368 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:45:00,485 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 06:45:00,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:45:00,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920541131] [2025-01-10 06:45:00,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920541131] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:45:00,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:45:00,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-10 06:45:00,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132030264] [2025-01-10 06:45:00,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:45:00,486 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-10 06:45:00,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:45:00,487 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-10 06:45:00,487 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-10 06:45:00,504 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 71 [2025-01-10 06:45:00,504 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 61 transitions, 159 flow. Second operand has 6 states, 6 states have (on average 28.333333333333332) internal successors, (170), 6 states have internal predecessors, (170), 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 06:45:00,504 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:45:00,504 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 71 [2025-01-10 06:45:00,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:45:00,783 INFO L124 PetriNetUnfolderBase]: 413/1175 cut-off events. [2025-01-10 06:45:00,783 INFO L125 PetriNetUnfolderBase]: For 250/252 co-relation queries the response was YES. [2025-01-10 06:45:00,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2299 conditions, 1175 events. 413/1175 cut-off events. For 250/252 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 7105 event pairs, 233 based on Foata normal form. 42/1212 useless extension candidates. Maximal degree in co-relation 2286. Up to 548 conditions per place. [2025-01-10 06:45:00,790 INFO L140 encePairwiseOnDemand]: 65/71 looper letters, 91 selfloop transitions, 4 changer transitions 0/114 dead transitions. [2025-01-10 06:45:00,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 114 transitions, 493 flow [2025-01-10 06:45:00,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-10 06:45:00,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-01-10 06:45:00,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 239 transitions. [2025-01-10 06:45:00,791 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5610328638497653 [2025-01-10 06:45:00,792 INFO L175 Difference]: Start difference. First operand has 67 places, 61 transitions, 159 flow. Second operand 6 states and 239 transitions. [2025-01-10 06:45:00,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 114 transitions, 493 flow [2025-01-10 06:45:00,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 114 transitions, 487 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-01-10 06:45:00,794 INFO L231 Difference]: Finished difference. Result has 68 places, 59 transitions, 154 flow [2025-01-10 06:45:00,794 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=154, PETRI_PLACES=68, PETRI_TRANSITIONS=59} [2025-01-10 06:45:00,794 INFO L279 CegarLoopForPetriNet]: 67 programPoint places, 1 predicate places. [2025-01-10 06:45:00,794 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 59 transitions, 154 flow [2025-01-10 06:45:00,795 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.333333333333332) internal successors, (170), 6 states have internal predecessors, (170), 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 06:45:00,795 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:45:00,795 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:45:00,795 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-01-10 06:45:00,795 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2025-01-10 06:45:00,795 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:45:00,795 INFO L85 PathProgramCache]: Analyzing trace with hash -530724987, now seen corresponding path program 1 times [2025-01-10 06:45:00,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:45:00,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812323737] [2025-01-10 06:45:00,796 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:45:00,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:45:00,804 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-01-10 06:45:00,814 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-01-10 06:45:00,814 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:45:00,814 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:45:00,880 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 06:45:00,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:45:00,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812323737] [2025-01-10 06:45:00,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812323737] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:45:00,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:45:00,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-10 06:45:00,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297216693] [2025-01-10 06:45:00,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:45:00,880 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-10 06:45:00,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:45:00,881 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-10 06:45:00,881 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-01-10 06:45:00,894 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 71 [2025-01-10 06:45:00,894 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 59 transitions, 154 flow. Second operand has 6 states, 6 states have (on average 28.333333333333332) internal successors, (170), 6 states have internal predecessors, (170), 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 06:45:00,894 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:45:00,894 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 71 [2025-01-10 06:45:00,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:45:01,098 INFO L124 PetriNetUnfolderBase]: 385/1115 cut-off events. [2025-01-10 06:45:01,098 INFO L125 PetriNetUnfolderBase]: For 231/233 co-relation queries the response was YES. [2025-01-10 06:45:01,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2206 conditions, 1115 events. 385/1115 cut-off events. For 231/233 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 6703 event pairs, 233 based on Foata normal form. 32/1142 useless extension candidates. Maximal degree in co-relation 2193. Up to 548 conditions per place. [2025-01-10 06:45:01,101 INFO L140 encePairwiseOnDemand]: 66/71 looper letters, 0 selfloop transitions, 0 changer transitions 113/113 dead transitions. [2025-01-10 06:45:01,101 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 113 transitions, 491 flow [2025-01-10 06:45:01,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-10 06:45:01,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-01-10 06:45:01,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 236 transitions. [2025-01-10 06:45:01,102 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5539906103286385 [2025-01-10 06:45:01,102 INFO L175 Difference]: Start difference. First operand has 68 places, 59 transitions, 154 flow. Second operand 6 states and 236 transitions. [2025-01-10 06:45:01,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 113 transitions, 491 flow [2025-01-10 06:45:01,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 113 transitions, 484 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-01-10 06:45:01,104 INFO L231 Difference]: Finished difference. Result has 68 places, 0 transitions, 0 flow [2025-01-10 06:45:01,104 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=68, PETRI_TRANSITIONS=0} [2025-01-10 06:45:01,105 INFO L279 CegarLoopForPetriNet]: 67 programPoint places, 1 predicate places. [2025-01-10 06:45:01,105 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 0 transitions, 0 flow [2025-01-10 06:45:01,105 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.333333333333332) internal successors, (170), 6 states have internal predecessors, (170), 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 06:45:01,107 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2025-01-10 06:45:01,108 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2025-01-10 06:45:01,108 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2025-01-10 06:45:01,108 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2025-01-10 06:45:01,108 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2025-01-10 06:45:01,108 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2025-01-10 06:45:01,108 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2025-01-10 06:45:01,108 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2025-01-10 06:45:01,108 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2025-01-10 06:45:01,108 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2025-01-10 06:45:01,108 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2025-01-10 06:45:01,108 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2025-01-10 06:45:01,108 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2025-01-10 06:45:01,108 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2025-01-10 06:45:01,108 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2025-01-10 06:45:01,108 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2025-01-10 06:45:01,108 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2025-01-10 06:45:01,108 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-01-10 06:45:01,109 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2025-01-10 06:45:01,114 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-01-10 06:45:01,114 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-01-10 06:45:01,118 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 06:45:01 BasicIcfg [2025-01-10 06:45:01,118 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-01-10 06:45:01,118 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-01-10 06:45:01,118 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-01-10 06:45:01,119 INFO L274 PluginConnector]: Witness Printer initialized [2025-01-10 06:45:01,119 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:44:57" (3/4) ... [2025-01-10 06:45:01,120 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-01-10 06:45:01,122 INFO L362 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2025-01-10 06:45:01,124 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 37 nodes and edges [2025-01-10 06:45:01,124 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2025-01-10 06:45:01,124 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2025-01-10 06:45:01,125 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-01-10 06:45:01,172 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-01-10 06:45:01,172 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.yml [2025-01-10 06:45:01,172 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-01-10 06:45:01,173 INFO L158 Benchmark]: Toolchain (without parser) took 4625.27ms. Allocated memory was 167.8MB in the beginning and 293.6MB in the end (delta: 125.8MB). Free memory was 121.5MB in the beginning and 99.5MB in the end (delta: 22.0MB). Peak memory consumption was 150.8MB. Max. memory is 16.1GB. [2025-01-10 06:45:01,173 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 201.3MB. Free memory is still 121.0MB. There was no memory consumed. Max. memory is 16.1GB. [2025-01-10 06:45:01,173 INFO L158 Benchmark]: CACSL2BoogieTranslator took 448.35ms. Allocated memory is still 167.8MB. Free memory was 121.5MB in the beginning and 101.6MB in the end (delta: 19.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-01-10 06:45:01,173 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.68ms. Allocated memory is still 167.8MB. Free memory was 101.6MB in the beginning and 99.5MB in the end (delta: 2.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-01-10 06:45:01,173 INFO L158 Benchmark]: Boogie Preprocessor took 43.62ms. Allocated memory is still 167.8MB. Free memory was 99.5MB in the beginning and 98.1MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-10 06:45:01,174 INFO L158 Benchmark]: RCFGBuilder took 823.52ms. Allocated memory is still 167.8MB. Free memory was 98.1MB in the beginning and 54.8MB in the end (delta: 43.3MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. [2025-01-10 06:45:01,174 INFO L158 Benchmark]: TraceAbstraction took 3209.61ms. Allocated memory was 167.8MB in the beginning and 293.6MB in the end (delta: 125.8MB). Free memory was 54.8MB in the beginning and 106.3MB in the end (delta: -51.6MB). Peak memory consumption was 75.3MB. Max. memory is 16.1GB. [2025-01-10 06:45:01,174 INFO L158 Benchmark]: Witness Printer took 53.79ms. Allocated memory is still 293.6MB. Free memory was 104.8MB in the beginning and 99.5MB in the end (delta: 5.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-01-10 06:45:01,175 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 201.3MB. Free memory is still 121.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 448.35ms. Allocated memory is still 167.8MB. Free memory was 121.5MB in the beginning and 101.6MB in the end (delta: 19.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.68ms. Allocated memory is still 167.8MB. Free memory was 101.6MB in the beginning and 99.5MB in the end (delta: 2.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 43.62ms. Allocated memory is still 167.8MB. Free memory was 99.5MB in the beginning and 98.1MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 823.52ms. Allocated memory is still 167.8MB. Free memory was 98.1MB in the beginning and 54.8MB in the end (delta: 43.3MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. * TraceAbstraction took 3209.61ms. Allocated memory was 167.8MB in the beginning and 293.6MB in the end (delta: 125.8MB). Free memory was 54.8MB in the beginning and 106.3MB in the end (delta: -51.6MB). Peak memory consumption was 75.3MB. Max. memory is 16.1GB. * Witness Printer took 53.79ms. Allocated memory is still 293.6MB. Free memory was 104.8MB in the beginning and 99.5MB in the end (delta: 5.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 688]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 688]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 691]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 691]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 696]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 696]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 699]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 699]: 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, 115 locations, 17 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: 3.1s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 503 SdHoareTripleChecker+Valid, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 461 mSDsluCounter, 136 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 111 mSDsCounter, 30 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1443 IncrementalHoareTripleChecker+Invalid, 1473 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 30 mSolverCounterUnsat, 25 mSDtfsCounter, 1443 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=166occurred in iteration=1, InterpolantAutomatonStates: 32, 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, 0.7s InterpolantComputationTime, 122 NumberOfCodeBlocks, 122 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 116 ConstructedInterpolants, 0 QuantifiedInterpolants, 348 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 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-01-10 06:45:01,189 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE