./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/goblint-regression/13-privatized_27-multiple-protecting2_true.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version da043454 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/goblint-regression/13-privatized_27-multiple-protecting2_true.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b467a32b0eca9139f7a8347695f46ec00315627748ff1a92daed133af33e0293 --- Real Ultimate output --- This is Ultimate 0.3.0-wip.fs.system-includes-da04345-m [2025-04-29 11:01:12,168 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-29 11:01:12,226 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-04-29 11:01:12,232 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-29 11:01:12,232 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-29 11:01:12,251 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-29 11:01:12,251 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-29 11:01:12,251 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-29 11:01:12,252 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-29 11:01:12,252 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-29 11:01:12,252 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-29 11:01:12,252 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-29 11:01:12,252 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-29 11:01:12,252 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-29 11:01:12,252 INFO L153 SettingsManager]: * Use SBE=true [2025-04-29 11:01:12,252 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-29 11:01:12,252 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-29 11:01:12,252 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-29 11:01:12,253 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-29 11:01:12,253 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-29 11:01:12,253 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-29 11:01:12,253 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-29 11:01:12,253 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-29 11:01:12,253 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-29 11:01:12,253 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-04-29 11:01:12,253 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-04-29 11:01:12,253 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-29 11:01:12,253 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-29 11:01:12,253 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-29 11:01:12,253 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-29 11:01:12,253 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-29 11:01:12,253 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-29 11:01:12,253 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-29 11:01:12,253 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-29 11:01:12,254 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-29 11:01:12,254 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-29 11:01:12,254 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-29 11:01:12,254 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-29 11:01:12,254 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-29 11:01:12,254 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-29 11:01:12,254 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-29 11:01:12,254 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-29 11:01:12,254 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-29 11:01:12,254 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-29 11:01:12,254 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-29 11:01:12,254 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-29 11:01:12,255 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-29 11:01:12,255 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-29 11:01:12,255 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-29 11:01:12,255 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b467a32b0eca9139f7a8347695f46ec00315627748ff1a92daed133af33e0293 [2025-04-29 11:01:12,449 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-29 11:01:12,454 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-29 11:01:12,456 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-29 11:01:12,456 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-29 11:01:12,457 INFO L274 PluginConnector]: CDTParser initialized [2025-04-29 11:01:12,457 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_27-multiple-protecting2_true.c [2025-04-29 11:01:13,746 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d5dcf291/11b06da9974847f58124e5fca745ac5f/FLAG1dd7bc370 [2025-04-29 11:01:13,960 INFO L389 CDTParser]: Found 1 translation units. [2025-04-29 11:01:13,961 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_27-multiple-protecting2_true.c [2025-04-29 11:01:13,963 WARN L117 ultiparseSymbolTable]: System include assert.h could not be resolved by CDT -- only built-in system includes are available. [2025-04-29 11:01:13,966 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2025-04-29 11:01:13,974 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d5dcf291/11b06da9974847f58124e5fca745ac5f/FLAG1dd7bc370 [2025-04-29 11:01:14,746 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d5dcf291/11b06da9974847f58124e5fca745ac5f [2025-04-29 11:01:14,749 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-29 11:01:14,750 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-04-29 11:01:14,751 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-29 11:01:14,751 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-29 11:01:14,754 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-29 11:01:14,757 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.04 11:01:14" (1/1) ... [2025-04-29 11:01:14,757 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52217a68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:01:14, skipping insertion in model container [2025-04-29 11:01:14,759 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.04 11:01:14" (1/1) ... [2025-04-29 11:01:14,771 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-29 11:01:14,932 INFO L211 PostProcessor]: Analyzing one entry point: main [2025-04-29 11:01:14,939 INFO L200 MainTranslator]: Completed pre-run [2025-04-29 11:01:14,973 INFO L211 PostProcessor]: Analyzing one entry point: main [2025-04-29 11:01:15,004 INFO L204 MainTranslator]: Completed translation [2025-04-29 11:01:15,005 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:01:15 WrapperNode [2025-04-29 11:01:15,005 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-29 11:01:15,006 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-29 11:01:15,007 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-29 11:01:15,007 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-29 11:01:15,013 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:01:15" (1/1) ... [2025-04-29 11:01:15,022 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:01:15" (1/1) ... [2025-04-29 11:01:15,044 INFO L138 Inliner]: procedures = 15, calls = 39, calls flagged for inlining = 7, calls inlined = 10, statements flattened = 97 [2025-04-29 11:01:15,045 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-29 11:01:15,045 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-29 11:01:15,046 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-29 11:01:15,046 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-29 11:01:15,053 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:01:15" (1/1) ... [2025-04-29 11:01:15,054 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:01:15" (1/1) ... [2025-04-29 11:01:15,058 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:01:15" (1/1) ... [2025-04-29 11:01:15,079 INFO L175 MemorySlicer]: Split 3 memory accesses to 3 slices as follows [1, 1, 1]. 33 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [1, 1, 1]. The 0 writes are split as follows [0, 0, 0]. [2025-04-29 11:01:15,079 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:01:15" (1/1) ... [2025-04-29 11:01:15,079 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:01:15" (1/1) ... [2025-04-29 11:01:15,083 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:01:15" (1/1) ... [2025-04-29 11:01:15,085 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:01:15" (1/1) ... [2025-04-29 11:01:15,086 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:01:15" (1/1) ... [2025-04-29 11:01:15,089 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:01:15" (1/1) ... [2025-04-29 11:01:15,091 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:01:15" (1/1) ... [2025-04-29 11:01:15,094 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-29 11:01:15,094 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-29 11:01:15,094 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-29 11:01:15,094 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-29 11:01:15,095 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:01:15" (1/1) ... [2025-04-29 11:01:15,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-29 11:01:15,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-29 11:01:15,122 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-04-29 11:01:15,125 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-04-29 11:01:15,143 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2025-04-29 11:01:15,143 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2025-04-29 11:01:15,143 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-29 11:01:15,143 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-04-29 11:01:15,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-04-29 11:01:15,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-04-29 11:01:15,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-04-29 11:01:15,143 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-04-29 11:01:15,143 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-29 11:01:15,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-29 11:01:15,143 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2025-04-29 11:01:15,143 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2025-04-29 11:01:15,144 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-04-29 11:01:15,215 INFO L234 CfgBuilder]: Building ICFG [2025-04-29 11:01:15,216 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-29 11:01:15,467 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-29 11:01:15,467 INFO L283 CfgBuilder]: Performing block encoding [2025-04-29 11:01:15,561 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-29 11:01:15,562 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-29 11:01:15,562 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.04 11:01:15 BoogieIcfgContainer [2025-04-29 11:01:15,563 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-29 11:01:15,565 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-29 11:01:15,565 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-29 11:01:15,569 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-29 11:01:15,569 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.04 11:01:14" (1/3) ... [2025-04-29 11:01:15,570 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26a10c7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.04 11:01:15, skipping insertion in model container [2025-04-29 11:01:15,570 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:01:15" (2/3) ... [2025-04-29 11:01:15,570 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26a10c7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.04 11:01:15, skipping insertion in model container [2025-04-29 11:01:15,570 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.04 11:01:15" (3/3) ... [2025-04-29 11:01:15,571 INFO L128 eAbstractionObserver]: Analyzing ICFG 13-privatized_27-multiple-protecting2_true.c [2025-04-29 11:01:15,581 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-29 11:01:15,583 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 13-privatized_27-multiple-protecting2_true.c that has 3 procedures, 77 locations, 74 edges, 1 initial locations, 0 loop locations, and 8 error locations. [2025-04-29 11:01:15,583 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-29 11:01:15,638 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-04-29 11:01:15,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 83 places, 76 transitions, 166 flow [2025-04-29 11:01:15,696 INFO L116 PetriNetUnfolderBase]: 0/74 cut-off events. [2025-04-29 11:01:15,698 INFO L117 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-04-29 11:01:15,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83 conditions, 74 events. 0/74 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 136 event pairs, 0 based on Foata normal form. 0/66 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2025-04-29 11:01:15,699 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 76 transitions, 166 flow [2025-04-29 11:01:15,702 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 79 places, 72 transitions, 153 flow [2025-04-29 11:01:15,707 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-29 11:01:15,716 INFO L340 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;@42e12705, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-29 11:01:15,717 INFO L341 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2025-04-29 11:01:15,723 INFO L177 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-04-29 11:01:15,724 INFO L116 PetriNetUnfolderBase]: 0/17 cut-off events. [2025-04-29 11:01:15,724 INFO L117 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-04-29 11:01:15,724 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-29 11:01:15,724 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-04-29 11:01:15,724 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-04-29 11:01:15,730 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 11:01:15,730 INFO L85 PathProgramCache]: Analyzing trace with hash 1241519539, now seen corresponding path program 1 times [2025-04-29 11:01:15,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 11:01:15,735 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944402297] [2025-04-29 11:01:15,736 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-29 11:01:15,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 11:01:15,795 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-04-29 11:01:15,816 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-04-29 11:01:15,816 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-29 11:01:15,817 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:01:15,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-29 11:01:15,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-29 11:01:15,964 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944402297] [2025-04-29 11:01:15,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944402297] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-29 11:01:15,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-29 11:01:15,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-29 11:01:15,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515829049] [2025-04-29 11:01:15,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-29 11:01:15,971 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-29 11:01:15,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-29 11:01:15,991 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-29 11:01:15,992 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-29 11:01:16,006 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 76 [2025-04-29 11:01:16,008 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 72 transitions, 153 flow. Second operand has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 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) [2025-04-29 11:01:16,008 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-29 11:01:16,008 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 76 [2025-04-29 11:01:16,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-29 11:01:17,422 INFO L116 PetriNetUnfolderBase]: 6965/13395 cut-off events. [2025-04-29 11:01:17,422 INFO L117 PetriNetUnfolderBase]: For 57/57 co-relation queries the response was YES. [2025-04-29 11:01:17,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24399 conditions, 13395 events. 6965/13395 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 366. Compared 110056 event pairs, 2238 based on Foata normal form. 218/13268 useless extension candidates. Maximal degree in co-relation 24273. Up to 5449 conditions per place. [2025-04-29 11:01:17,487 INFO L140 encePairwiseOnDemand]: 67/76 looper letters, 105 selfloop transitions, 7 changer transitions 0/138 dead transitions. [2025-04-29 11:01:17,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 138 transitions, 518 flow [2025-04-29 11:01:17,488 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-29 11:01:17,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-04-29 11:01:17,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 226 transitions. [2025-04-29 11:01:17,496 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.743421052631579 [2025-04-29 11:01:17,497 INFO L175 Difference]: Start difference. First operand has 79 places, 72 transitions, 153 flow. Second operand 4 states and 226 transitions. [2025-04-29 11:01:17,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 138 transitions, 518 flow [2025-04-29 11:01:17,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 138 transitions, 509 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-04-29 11:01:17,509 INFO L231 Difference]: Finished difference. Result has 79 places, 74 transitions, 186 flow [2025-04-29 11:01:17,511 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=186, PETRI_PLACES=79, PETRI_TRANSITIONS=74} [2025-04-29 11:01:17,513 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 0 predicate places. [2025-04-29 11:01:17,513 INFO L485 AbstractCegarLoop]: Abstraction has has 79 places, 74 transitions, 186 flow [2025-04-29 11:01:17,513 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 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) [2025-04-29 11:01:17,513 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-29 11:01:17,513 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-29 11:01:17,513 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-29 11:01:17,513 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-04-29 11:01:17,514 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 11:01:17,514 INFO L85 PathProgramCache]: Analyzing trace with hash -58683991, now seen corresponding path program 1 times [2025-04-29 11:01:17,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 11:01:17,514 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501404927] [2025-04-29 11:01:17,514 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-29 11:01:17,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 11:01:17,523 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-04-29 11:01:17,530 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-04-29 11:01:17,534 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-29 11:01:17,535 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:01:17,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-29 11:01:17,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-29 11:01:17,595 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501404927] [2025-04-29 11:01:17,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501404927] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-29 11:01:17,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-29 11:01:17,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-29 11:01:17,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964853671] [2025-04-29 11:01:17,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-29 11:01:17,596 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-29 11:01:17,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-29 11:01:17,597 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-29 11:01:17,597 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-29 11:01:17,601 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 76 [2025-04-29 11:01:17,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 74 transitions, 186 flow. Second operand has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 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) [2025-04-29 11:01:17,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-29 11:01:17,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 76 [2025-04-29 11:01:17,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-29 11:01:18,669 INFO L116 PetriNetUnfolderBase]: 8807/17151 cut-off events. [2025-04-29 11:01:18,669 INFO L117 PetriNetUnfolderBase]: For 3104/3104 co-relation queries the response was YES. [2025-04-29 11:01:18,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33790 conditions, 17151 events. 8807/17151 cut-off events. For 3104/3104 co-relation queries the response was YES. Maximal size of possible extension queue 446. Compared 147037 event pairs, 2309 based on Foata normal form. 330/17094 useless extension candidates. Maximal degree in co-relation 30137. Up to 7471 conditions per place. [2025-04-29 11:01:18,743 INFO L140 encePairwiseOnDemand]: 69/76 looper letters, 116 selfloop transitions, 5 changer transitions 0/145 dead transitions. [2025-04-29 11:01:18,743 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 145 transitions, 632 flow [2025-04-29 11:01:18,743 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-29 11:01:18,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-04-29 11:01:18,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 223 transitions. [2025-04-29 11:01:18,747 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.7335526315789473 [2025-04-29 11:01:18,747 INFO L175 Difference]: Start difference. First operand has 79 places, 74 transitions, 186 flow. Second operand 4 states and 223 transitions. [2025-04-29 11:01:18,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 145 transitions, 632 flow [2025-04-29 11:01:18,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 145 transitions, 626 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-04-29 11:01:18,753 INFO L231 Difference]: Finished difference. Result has 81 places, 74 transitions, 206 flow [2025-04-29 11:01:18,753 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=206, PETRI_PLACES=81, PETRI_TRANSITIONS=74} [2025-04-29 11:01:18,753 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 2 predicate places. [2025-04-29 11:01:18,753 INFO L485 AbstractCegarLoop]: Abstraction has has 81 places, 74 transitions, 206 flow [2025-04-29 11:01:18,754 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 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) [2025-04-29 11:01:18,754 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-29 11:01:18,754 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-29 11:01:18,754 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-04-29 11:01:18,755 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-04-29 11:01:18,755 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 11:01:18,756 INFO L85 PathProgramCache]: Analyzing trace with hash 77749783, now seen corresponding path program 1 times [2025-04-29 11:01:18,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 11:01:18,756 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212701257] [2025-04-29 11:01:18,756 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-29 11:01:18,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 11:01:18,763 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-04-29 11:01:18,773 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-04-29 11:01:18,776 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-29 11:01:18,777 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:01:18,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-29 11:01:18,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-29 11:01:18,880 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212701257] [2025-04-29 11:01:18,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212701257] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-29 11:01:18,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-29 11:01:18,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-29 11:01:18,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542949653] [2025-04-29 11:01:18,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-29 11:01:18,881 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-04-29 11:01:18,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-29 11:01:18,882 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-04-29 11:01:18,882 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-04-29 11:01:18,900 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 76 [2025-04-29 11:01:18,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 74 transitions, 206 flow. Second operand has 6 states, 6 states have (on average 27.666666666666668) internal successors, (166), 6 states have internal predecessors, (166), 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) [2025-04-29 11:01:18,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-29 11:01:18,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 76 [2025-04-29 11:01:18,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-29 11:01:19,927 INFO L116 PetriNetUnfolderBase]: 7460/14039 cut-off events. [2025-04-29 11:01:19,927 INFO L117 PetriNetUnfolderBase]: For 4143/4143 co-relation queries the response was YES. [2025-04-29 11:01:19,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29263 conditions, 14039 events. 7460/14039 cut-off events. For 4143/4143 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 113834 event pairs, 1978 based on Foata normal form. 494/14451 useless extension candidates. Maximal degree in co-relation 25414. Up to 4567 conditions per place. [2025-04-29 11:01:19,986 INFO L140 encePairwiseOnDemand]: 67/76 looper letters, 160 selfloop transitions, 8 changer transitions 5/195 dead transitions. [2025-04-29 11:01:19,987 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 195 transitions, 877 flow [2025-04-29 11:01:19,987 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-29 11:01:19,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-04-29 11:01:19,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 326 transitions. [2025-04-29 11:01:19,989 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.7149122807017544 [2025-04-29 11:01:19,989 INFO L175 Difference]: Start difference. First operand has 81 places, 74 transitions, 206 flow. Second operand 6 states and 326 transitions. [2025-04-29 11:01:19,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 195 transitions, 877 flow [2025-04-29 11:01:19,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 195 transitions, 860 flow, removed 1 selfloop flow, removed 2 redundant places. [2025-04-29 11:01:19,999 INFO L231 Difference]: Finished difference. Result has 83 places, 72 transitions, 205 flow [2025-04-29 11:01:19,999 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=205, PETRI_PLACES=83, PETRI_TRANSITIONS=72} [2025-04-29 11:01:20,000 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 4 predicate places. [2025-04-29 11:01:20,001 INFO L485 AbstractCegarLoop]: Abstraction has has 83 places, 72 transitions, 205 flow [2025-04-29 11:01:20,001 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.666666666666668) internal successors, (166), 6 states have internal predecessors, (166), 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) [2025-04-29 11:01:20,001 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-29 11:01:20,001 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-29 11:01:20,001 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-04-29 11:01:20,001 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-04-29 11:01:20,002 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 11:01:20,002 INFO L85 PathProgramCache]: Analyzing trace with hash -1884723528, now seen corresponding path program 1 times [2025-04-29 11:01:20,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 11:01:20,002 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721371561] [2025-04-29 11:01:20,002 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-29 11:01:20,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 11:01:20,010 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-04-29 11:01:20,018 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-04-29 11:01:20,018 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-29 11:01:20,018 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:01:20,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-29 11:01:20,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-29 11:01:20,095 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721371561] [2025-04-29 11:01:20,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721371561] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-29 11:01:20,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-29 11:01:20,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-29 11:01:20,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310102203] [2025-04-29 11:01:20,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-29 11:01:20,095 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-04-29 11:01:20,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-29 11:01:20,096 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-04-29 11:01:20,096 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-04-29 11:01:20,106 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 76 [2025-04-29 11:01:20,106 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 72 transitions, 205 flow. Second operand has 6 states, 6 states have (on average 27.666666666666668) internal successors, (166), 6 states have internal predecessors, (166), 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) [2025-04-29 11:01:20,106 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-29 11:01:20,106 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 76 [2025-04-29 11:01:20,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-29 11:01:20,993 INFO L116 PetriNetUnfolderBase]: 7003/13308 cut-off events. [2025-04-29 11:01:20,993 INFO L117 PetriNetUnfolderBase]: For 3923/3923 co-relation queries the response was YES. [2025-04-29 11:01:21,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28242 conditions, 13308 events. 7003/13308 cut-off events. For 3923/3923 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 107514 event pairs, 1978 based on Foata normal form. 274/13500 useless extension candidates. Maximal degree in co-relation 24432. Up to 5155 conditions per place. [2025-04-29 11:01:21,028 INFO L140 encePairwiseOnDemand]: 67/76 looper letters, 115 selfloop transitions, 8 changer transitions 21/165 dead transitions. [2025-04-29 11:01:21,028 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 165 transitions, 738 flow [2025-04-29 11:01:21,029 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-29 11:01:21,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-04-29 11:01:21,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 292 transitions. [2025-04-29 11:01:21,030 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.6403508771929824 [2025-04-29 11:01:21,030 INFO L175 Difference]: Start difference. First operand has 83 places, 72 transitions, 205 flow. Second operand 6 states and 292 transitions. [2025-04-29 11:01:21,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 165 transitions, 738 flow [2025-04-29 11:01:21,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 165 transitions, 717 flow, removed 0 selfloop flow, removed 6 redundant places. [2025-04-29 11:01:21,037 INFO L231 Difference]: Finished difference. Result has 81 places, 65 transitions, 180 flow [2025-04-29 11:01:21,037 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=180, PETRI_PLACES=81, PETRI_TRANSITIONS=65} [2025-04-29 11:01:21,038 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 2 predicate places. [2025-04-29 11:01:21,038 INFO L485 AbstractCegarLoop]: Abstraction has has 81 places, 65 transitions, 180 flow [2025-04-29 11:01:21,038 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.666666666666668) internal successors, (166), 6 states have internal predecessors, (166), 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) [2025-04-29 11:01:21,038 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-29 11:01:21,038 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-29 11:01:21,039 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-04-29 11:01:21,039 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-04-29 11:01:21,039 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 11:01:21,039 INFO L85 PathProgramCache]: Analyzing trace with hash -1931283027, now seen corresponding path program 1 times [2025-04-29 11:01:21,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 11:01:21,039 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690546451] [2025-04-29 11:01:21,039 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-29 11:01:21,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 11:01:21,047 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-04-29 11:01:21,052 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-04-29 11:01:21,055 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-29 11:01:21,055 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:01:21,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-29 11:01:21,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-29 11:01:21,117 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690546451] [2025-04-29 11:01:21,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690546451] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-29 11:01:21,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-29 11:01:21,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-29 11:01:21,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636299650] [2025-04-29 11:01:21,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-29 11:01:21,117 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-04-29 11:01:21,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-29 11:01:21,117 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-04-29 11:01:21,117 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-04-29 11:01:21,130 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 76 [2025-04-29 11:01:21,130 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 65 transitions, 180 flow. Second operand has 6 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-29 11:01:21,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-29 11:01:21,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 76 [2025-04-29 11:01:21,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-29 11:01:21,708 INFO L116 PetriNetUnfolderBase]: 4043/7777 cut-off events. [2025-04-29 11:01:21,708 INFO L117 PetriNetUnfolderBase]: For 2137/2137 co-relation queries the response was YES. [2025-04-29 11:01:21,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16174 conditions, 7777 events. 4043/7777 cut-off events. For 2137/2137 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 58951 event pairs, 1183 based on Foata normal form. 354/8114 useless extension candidates. Maximal degree in co-relation 13913. Up to 2232 conditions per place. [2025-04-29 11:01:21,739 INFO L140 encePairwiseOnDemand]: 70/76 looper letters, 134 selfloop transitions, 4 changer transitions 0/157 dead transitions. [2025-04-29 11:01:21,740 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 157 transitions, 725 flow [2025-04-29 11:01:21,740 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-29 11:01:21,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-04-29 11:01:21,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 285 transitions. [2025-04-29 11:01:21,741 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.625 [2025-04-29 11:01:21,741 INFO L175 Difference]: Start difference. First operand has 81 places, 65 transitions, 180 flow. Second operand 6 states and 285 transitions. [2025-04-29 11:01:21,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 157 transitions, 725 flow [2025-04-29 11:01:21,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 157 transitions, 685 flow, removed 0 selfloop flow, removed 7 redundant places. [2025-04-29 11:01:21,746 INFO L231 Difference]: Finished difference. Result has 73 places, 63 transitions, 164 flow [2025-04-29 11:01:21,746 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=164, PETRI_PLACES=73, PETRI_TRANSITIONS=63} [2025-04-29 11:01:21,747 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, -6 predicate places. [2025-04-29 11:01:21,747 INFO L485 AbstractCegarLoop]: Abstraction has has 73 places, 63 transitions, 164 flow [2025-04-29 11:01:21,747 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-29 11:01:21,747 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-29 11:01:21,747 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-29 11:01:21,747 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-04-29 11:01:21,747 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-04-29 11:01:21,748 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 11:01:21,748 INFO L85 PathProgramCache]: Analyzing trace with hash 259768781, now seen corresponding path program 1 times [2025-04-29 11:01:21,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 11:01:21,748 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879626709] [2025-04-29 11:01:21,748 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-29 11:01:21,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 11:01:21,754 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-04-29 11:01:21,757 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-04-29 11:01:21,758 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-29 11:01:21,758 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:01:21,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-29 11:01:21,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-29 11:01:21,824 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879626709] [2025-04-29 11:01:21,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879626709] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-29 11:01:21,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-29 11:01:21,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-29 11:01:21,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111898830] [2025-04-29 11:01:21,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-29 11:01:21,825 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-04-29 11:01:21,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-29 11:01:21,825 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-04-29 11:01:21,825 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-04-29 11:01:21,837 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 76 [2025-04-29 11:01:21,838 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 63 transitions, 164 flow. Second operand has 6 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-29 11:01:21,838 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-29 11:01:21,838 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 76 [2025-04-29 11:01:21,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-29 11:01:22,366 INFO L116 PetriNetUnfolderBase]: 3573/7033 cut-off events. [2025-04-29 11:01:22,366 INFO L117 PetriNetUnfolderBase]: For 1737/1737 co-relation queries the response was YES. [2025-04-29 11:01:22,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14435 conditions, 7033 events. 3573/7033 cut-off events. For 1737/1737 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 53418 event pairs, 1183 based on Foata normal form. 274/7290 useless extension candidates. Maximal degree in co-relation 12359. Up to 2232 conditions per place. [2025-04-29 11:01:22,385 INFO L140 encePairwiseOnDemand]: 71/76 looper letters, 0 selfloop transitions, 0 changer transitions 156/156 dead transitions. [2025-04-29 11:01:22,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 156 transitions, 689 flow [2025-04-29 11:01:22,385 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-29 11:01:22,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-04-29 11:01:22,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 282 transitions. [2025-04-29 11:01:22,386 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.618421052631579 [2025-04-29 11:01:22,386 INFO L175 Difference]: Start difference. First operand has 73 places, 63 transitions, 164 flow. Second operand 6 states and 282 transitions. [2025-04-29 11:01:22,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 156 transitions, 689 flow [2025-04-29 11:01:22,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 156 transitions, 682 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-04-29 11:01:22,391 INFO L231 Difference]: Finished difference. Result has 73 places, 0 transitions, 0 flow [2025-04-29 11:01:22,392 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=73, PETRI_TRANSITIONS=0} [2025-04-29 11:01:22,392 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, -6 predicate places. [2025-04-29 11:01:22,392 INFO L485 AbstractCegarLoop]: Abstraction has has 73 places, 0 transitions, 0 flow [2025-04-29 11:01:22,392 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-29 11:01:22,395 INFO L790 garLoopResultBuilder]: Registering result SAFE for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 18 remaining) [2025-04-29 11:01:22,395 INFO L790 garLoopResultBuilder]: Registering result SAFE for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 18 remaining) [2025-04-29 11:01:22,395 INFO L790 garLoopResultBuilder]: Registering result SAFE for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2025-04-29 11:01:22,395 INFO L790 garLoopResultBuilder]: Registering result SAFE for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2025-04-29 11:01:22,395 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (13 of 18 remaining) [2025-04-29 11:01:22,395 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 18 remaining) [2025-04-29 11:01:22,395 INFO L790 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2025-04-29 11:01:22,395 INFO L790 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2025-04-29 11:01:22,395 INFO L790 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 18 remaining) [2025-04-29 11:01:22,395 INFO L790 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 18 remaining) [2025-04-29 11:01:22,395 INFO L790 garLoopResultBuilder]: Registering result SAFE for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 18 remaining) [2025-04-29 11:01:22,395 INFO L790 garLoopResultBuilder]: Registering result SAFE for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 18 remaining) [2025-04-29 11:01:22,395 INFO L790 garLoopResultBuilder]: Registering result SAFE for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2025-04-29 11:01:22,395 INFO L790 garLoopResultBuilder]: Registering result SAFE for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 18 remaining) [2025-04-29 11:01:22,395 INFO L790 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2025-04-29 11:01:22,395 INFO L790 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2025-04-29 11:01:22,395 INFO L790 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2025-04-29 11:01:22,395 INFO L790 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2025-04-29 11:01:22,396 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-04-29 11:01:22,396 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2025-04-29 11:01:22,399 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-04-29 11:01:22,400 INFO L171 ceAbstractionStarter]: Computing trace abstraction results [2025-04-29 11:01:22,403 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.04 11:01:22 BasicIcfg [2025-04-29 11:01:22,404 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-04-29 11:01:22,404 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-04-29 11:01:22,404 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-04-29 11:01:22,404 INFO L274 PluginConnector]: Witness Printer initialized [2025-04-29 11:01:22,405 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.04 11:01:15" (3/4) ... [2025-04-29 11:01:22,406 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-04-29 11:01:22,408 INFO L362 RCFGBacktranslator]: Ignoring RootEdge to procedure t2_fun [2025-04-29 11:01:22,409 INFO L362 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2025-04-29 11:01:22,411 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 26 nodes and edges [2025-04-29 11:01:22,411 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2025-04-29 11:01:22,411 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2025-04-29 11:01:22,463 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-04-29 11:01:22,463 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-04-29 11:01:22,463 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-04-29 11:01:22,464 INFO L158 Benchmark]: Toolchain (without parser) took 7714.38ms. Allocated memory was 142.6MB in the beginning and 1.3GB in the end (delta: 1.2GB). Free memory was 111.6MB in the beginning and 646.8MB in the end (delta: -535.1MB). Peak memory consumption was 643.1MB. Max. memory is 16.1GB. [2025-04-29 11:01:22,464 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 201.3MB. Free memory is still 127.5MB. There was no memory consumed. Max. memory is 16.1GB. [2025-04-29 11:01:22,464 INFO L158 Benchmark]: CACSL2BoogieTranslator took 255.16ms. Allocated memory is still 142.6MB. Free memory was 111.6MB in the beginning and 97.7MB in the end (delta: 13.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-04-29 11:01:22,465 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.54ms. Allocated memory is still 142.6MB. Free memory was 97.7MB in the beginning and 95.8MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. [2025-04-29 11:01:22,465 INFO L158 Benchmark]: Boogie Preprocessor took 48.32ms. Allocated memory is still 142.6MB. Free memory was 95.8MB in the beginning and 93.9MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. [2025-04-29 11:01:22,465 INFO L158 Benchmark]: RCFGBuilder took 469.25ms. Allocated memory is still 142.6MB. Free memory was 93.9MB in the beginning and 64.2MB in the end (delta: 29.8MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2025-04-29 11:01:22,465 INFO L158 Benchmark]: TraceAbstraction took 6838.43ms. Allocated memory was 142.6MB in the beginning and 1.3GB in the end (delta: 1.2GB). Free memory was 63.2MB in the beginning and 651.0MB in the end (delta: -587.7MB). Peak memory consumption was 592.7MB. Max. memory is 16.1GB. [2025-04-29 11:01:22,466 INFO L158 Benchmark]: Witness Printer took 59.16ms. Allocated memory is still 1.3GB. Free memory was 651.0MB in the beginning and 646.8MB in the end (delta: 4.2MB). There was no memory consumed. Max. memory is 16.1GB. [2025-04-29 11:01:22,467 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 127.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 255.16ms. Allocated memory is still 142.6MB. Free memory was 111.6MB in the beginning and 97.7MB in the end (delta: 13.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.54ms. Allocated memory is still 142.6MB. Free memory was 97.7MB in the beginning and 95.8MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 48.32ms. Allocated memory is still 142.6MB. Free memory was 95.8MB in the beginning and 93.9MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 469.25ms. Allocated memory is still 142.6MB. Free memory was 93.9MB in the beginning and 64.2MB in the end (delta: 29.8MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * TraceAbstraction took 6838.43ms. Allocated memory was 142.6MB in the beginning and 1.3GB in the end (delta: 1.2GB). Free memory was 63.2MB in the beginning and 651.0MB in the end (delta: -587.7MB). Peak memory consumption was 592.7MB. Max. memory is 16.1GB. * Witness Printer took 59.16ms. Allocated memory is still 1.3GB. Free memory was 651.0MB in the beginning and 646.8MB in the end (delta: 4.2MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 35]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 35]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 38]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 38]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 23]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 23]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 26]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 26]: 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 5 procedures, 123 locations, 122 edges, 18 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: 6.7s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 5.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 782 SdHoareTripleChecker+Valid, 1.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 746 mSDsluCounter, 106 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 97 mSDsCounter, 31 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1944 IncrementalHoareTripleChecker+Invalid, 1975 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 31 mSolverCounterUnsat, 9 mSDtfsCounter, 1944 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=206occurred in iteration=2, 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, 0.5s InterpolantComputationTime, 80 NumberOfCodeBlocks, 80 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 74 ConstructedInterpolants, 0 QuantifiedInterpolants, 222 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! [2025-04-29 11:01:22,478 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/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