./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/pthread-deagle/circular_buffer_ok.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 48c9605d Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-deagle/circular_buffer_ok.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 8fcb457b1bed8494a9a3b58e82500f367f4337ac38b5a41a5dad0da896f97e40 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 14:15:15,226 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 14:15:15,293 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-02-08 14:15:15,299 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 14:15:15,299 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 14:15:15,325 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 14:15:15,326 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 14:15:15,326 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 14:15:15,326 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 14:15:15,326 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 14:15:15,326 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 14:15:15,326 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 14:15:15,327 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 14:15:15,327 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 14:15:15,327 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 14:15:15,327 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 14:15:15,327 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-08 14:15:15,327 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 14:15:15,328 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 14:15:15,328 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 14:15:15,328 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 14:15:15,328 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-08 14:15:15,328 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 14:15:15,328 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-08 14:15:15,328 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-02-08 14:15:15,328 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 14:15:15,328 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 14:15:15,328 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-08 14:15:15,328 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 14:15:15,328 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 14:15:15,328 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 14:15:15,329 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 14:15:15,329 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 14:15:15,329 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 14:15:15,329 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 14:15:15,329 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 14:15:15,329 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 14:15:15,329 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-08 14:15:15,329 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-08 14:15:15,329 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 14:15:15,329 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 14:15:15,329 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 14:15:15,329 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 14:15:15,329 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 14:15:15,330 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 14:15:15,330 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 -> 8fcb457b1bed8494a9a3b58e82500f367f4337ac38b5a41a5dad0da896f97e40 [2025-02-08 14:15:15,613 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 14:15:15,624 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 14:15:15,626 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 14:15:15,627 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 14:15:15,627 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 14:15:15,629 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-deagle/circular_buffer_ok.i [2025-02-08 14:15:17,053 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/528e090d9/8458ce64aef746619ddcb4f13ea54cdc/FLAG468585ca0 [2025-02-08 14:15:17,481 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 14:15:17,483 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-deagle/circular_buffer_ok.i [2025-02-08 14:15:17,501 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/528e090d9/8458ce64aef746619ddcb4f13ea54cdc/FLAG468585ca0 [2025-02-08 14:15:17,527 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/528e090d9/8458ce64aef746619ddcb4f13ea54cdc [2025-02-08 14:15:17,531 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 14:15:17,534 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 14:15:17,536 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 14:15:17,536 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 14:15:17,543 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 14:15:17,544 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 02:15:17" (1/1) ... [2025-02-08 14:15:17,545 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@340f9b2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:15:17, skipping insertion in model container [2025-02-08 14:15:17,545 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 02:15:17" (1/1) ... [2025-02-08 14:15:17,584 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 14:15:17,895 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 14:15:17,922 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 14:15:17,962 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 14:15:17,995 INFO L204 MainTranslator]: Completed translation [2025-02-08 14:15:17,996 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:15:17 WrapperNode [2025-02-08 14:15:17,996 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 14:15:17,997 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 14:15:17,998 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 14:15:17,998 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 14:15:18,003 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:15:17" (1/1) ... [2025-02-08 14:15:18,018 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:15:17" (1/1) ... [2025-02-08 14:15:18,046 INFO L138 Inliner]: procedures = 168, calls = 41, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 149 [2025-02-08 14:15:18,047 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 14:15:18,047 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 14:15:18,049 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 14:15:18,049 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 14:15:18,057 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:15:17" (1/1) ... [2025-02-08 14:15:18,058 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:15:17" (1/1) ... [2025-02-08 14:15:18,065 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:15:17" (1/1) ... [2025-02-08 14:15:18,085 INFO L175 MemorySlicer]: Split 23 memory accesses to 4 slices as follows [2, 1, 12, 8]. 52 percent of accesses are in the largest equivalence class. The 21 initializations are split as follows [2, 1, 10, 8]. The 1 writes are split as follows [0, 0, 1, 0]. [2025-02-08 14:15:18,086 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:15:17" (1/1) ... [2025-02-08 14:15:18,086 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:15:17" (1/1) ... [2025-02-08 14:15:18,092 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:15:17" (1/1) ... [2025-02-08 14:15:18,094 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:15:17" (1/1) ... [2025-02-08 14:15:18,095 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:15:17" (1/1) ... [2025-02-08 14:15:18,096 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:15:17" (1/1) ... [2025-02-08 14:15:18,101 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 14:15:18,102 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 14:15:18,102 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 14:15:18,102 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 14:15:18,103 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:15:17" (1/1) ... [2025-02-08 14:15:18,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 14:15:18,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:15:18,137 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-08 14:15:18,140 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-08 14:15:18,160 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-08 14:15:18,160 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-08 14:15:18,160 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-02-08 14:15:18,160 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-02-08 14:15:18,160 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2025-02-08 14:15:18,161 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2025-02-08 14:15:18,161 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2025-02-08 14:15:18,161 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2025-02-08 14:15:18,161 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-08 14:15:18,161 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-08 14:15:18,161 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-02-08 14:15:18,161 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-02-08 14:15:18,161 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-02-08 14:15:18,161 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 14:15:18,161 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2025-02-08 14:15:18,161 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2025-02-08 14:15:18,161 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2025-02-08 14:15:18,161 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2025-02-08 14:15:18,162 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 14:15:18,162 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-08 14:15:18,162 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-02-08 14:15:18,162 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-02-08 14:15:18,162 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-02-08 14:15:18,162 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 14:15:18,163 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 14:15:18,164 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-08 14:15:18,276 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 14:15:18,277 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 14:15:18,607 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L733: ~send~0 := 0; [2025-02-08 14:15:18,607 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L734: ~receive~0 := 1; [2025-02-08 14:15:18,607 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L730: assume ~i~0#1 == #t~ret4#1; [2025-02-08 14:15:18,607 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L730: assume !(~i~0#1 == #t~ret4#1); [2025-02-08 14:15:18,607 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L730-1: havoc #t~ret4#1; [2025-02-08 14:15:18,607 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L730-2: havoc #t~ret4#1; [2025-02-08 14:15:18,607 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L730-3: assume { :end_inline_insertLogElement } true;assume -2147483648 <= #t~ret4#1 && #t~ret4#1 <= 2147483647; [2025-02-08 14:15:18,607 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L730-4: havoc insertLogElement_#in~b#1; [2025-02-08 14:15:18,607 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L730-5: havoc insertLogElement_~b#1; [2025-02-08 14:15:18,607 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L730-6: #t~ret4#1 := insertLogElement_#res#1; [2025-02-08 14:15:18,607 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L681: assume false; [2025-02-08 14:15:18,607 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L681: assume !false; [2025-02-08 14:15:18,607 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L681-1: assume false; [2025-02-08 14:15:18,607 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L731: assume { :end_inline_reach_error } true;assume false; [2025-02-08 14:15:18,608 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L731-1: havoc reach_error_#t~nondet0#1.base, reach_error_#t~nondet0#1.offset; [2025-02-08 14:15:18,608 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L731-2: assume { :begin_inline_reach_error } true;havoc reach_error_#t~nondet0#1.base, reach_error_#t~nondet0#1.offset; [2025-02-08 14:15:18,608 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L732: ~value~0 := ~i~0#1; [2025-02-08 14:15:18,722 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L750: ~receive~0 := 0; [2025-02-08 14:15:18,722 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L751: ~send~0 := 1; [2025-02-08 14:15:18,723 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L681: assume false; [2025-02-08 14:15:18,723 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L681: assume !false; [2025-02-08 14:15:18,723 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L681-1: assume false; [2025-02-08 14:15:18,725 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L748: assume #t~ret8#1 == ~value~0; [2025-02-08 14:15:18,725 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L748: assume !(#t~ret8#1 == ~value~0); [2025-02-08 14:15:18,725 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L748-1: havoc #t~ret8#1; [2025-02-08 14:15:18,725 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L748-2: havoc #t~ret8#1; [2025-02-08 14:15:18,725 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L748-3: assume { :end_inline_removeLogElement } true;assume -2147483648 <= #t~ret8#1 && #t~ret8#1 <= 2147483647; [2025-02-08 14:15:18,726 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L748-4: havoc removeLogElement_#t~post1#1, removeLogElement_#t~mem2#1; [2025-02-08 14:15:18,726 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L748-5: #t~ret8#1 := removeLogElement_#res#1; [2025-02-08 14:15:18,729 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L699: havoc removeLogElement_#t~mem2#1; [2025-02-08 14:15:18,730 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L749: assume { :end_inline_reach_error } true;assume false; [2025-02-08 14:15:18,730 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L749-1: havoc reach_error_#t~nondet0#1.base, reach_error_#t~nondet0#1.offset; [2025-02-08 14:15:18,730 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L749-2: assume { :begin_inline_reach_error } true;havoc reach_error_#t~nondet0#1.base, reach_error_#t~nondet0#1.offset; [2025-02-08 14:15:18,731 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-08 14:15:18,731 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 14:15:19,148 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 14:15:19,151 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 14:15:19,151 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 02:15:19 BoogieIcfgContainer [2025-02-08 14:15:19,151 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 14:15:19,157 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 14:15:19,157 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 14:15:19,167 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 14:15:19,167 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 02:15:17" (1/3) ... [2025-02-08 14:15:19,168 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63cf6ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 02:15:19, skipping insertion in model container [2025-02-08 14:15:19,168 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:15:17" (2/3) ... [2025-02-08 14:15:19,169 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63cf6ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 02:15:19, skipping insertion in model container [2025-02-08 14:15:19,169 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 02:15:19" (3/3) ... [2025-02-08 14:15:19,170 INFO L128 eAbstractionObserver]: Analyzing ICFG circular_buffer_ok.i [2025-02-08 14:15:19,242 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 14:15:19,253 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG circular_buffer_ok.i that has 3 procedures, 35 locations, 1 initial locations, 2 loop locations, and 4 error locations. [2025-02-08 14:15:19,254 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-08 14:15:19,361 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-02-08 14:15:19,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 41 places, 36 transitions, 86 flow [2025-02-08 14:15:19,425 INFO L124 PetriNetUnfolderBase]: 2/34 cut-off events. [2025-02-08 14:15:19,427 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-02-08 14:15:19,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43 conditions, 34 events. 2/34 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 78 event pairs, 0 based on Foata normal form. 0/26 useless extension candidates. Maximal degree in co-relation 31. Up to 2 conditions per place. [2025-02-08 14:15:19,432 INFO L82 GeneralOperation]: Start removeDead. Operand has 41 places, 36 transitions, 86 flow [2025-02-08 14:15:19,437 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 37 places, 32 transitions, 73 flow [2025-02-08 14:15:19,449 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 14:15:19,462 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;@6cc91ec0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 14:15:19,462 INFO L334 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2025-02-08 14:15:19,471 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 14:15:19,472 INFO L124 PetriNetUnfolderBase]: 1/24 cut-off events. [2025-02-08 14:15:19,472 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-02-08 14:15:19,472 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:15:19,473 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:15:19,473 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2025-02-08 14:15:19,479 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:15:19,479 INFO L85 PathProgramCache]: Analyzing trace with hash 795490002, now seen corresponding path program 1 times [2025-02-08 14:15:19,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:15:19,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112971937] [2025-02-08 14:15:19,489 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:15:19,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:15:19,659 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-08 14:15:19,691 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-08 14:15:19,691 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:15:19,691 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:15:19,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:15:19,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:15:19,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112971937] [2025-02-08 14:15:19,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112971937] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:15:19,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:15:19,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 14:15:19,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272988690] [2025-02-08 14:15:19,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:15:19,946 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:15:19,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:15:19,970 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:15:19,970 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:15:19,985 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 36 [2025-02-08 14:15:19,988 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 32 transitions, 73 flow. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:15:19,989 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:15:19,989 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 36 [2025-02-08 14:15:19,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:15:20,320 INFO L124 PetriNetUnfolderBase]: 330/708 cut-off events. [2025-02-08 14:15:20,320 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2025-02-08 14:15:20,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1311 conditions, 708 events. 330/708 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 3630 event pairs, 180 based on Foata normal form. 32/705 useless extension candidates. Maximal degree in co-relation 1266. Up to 368 conditions per place. [2025-02-08 14:15:20,338 INFO L140 encePairwiseOnDemand]: 30/36 looper letters, 44 selfloop transitions, 3 changer transitions 0/57 dead transitions. [2025-02-08 14:15:20,343 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 57 transitions, 223 flow [2025-02-08 14:15:20,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:15:20,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:15:20,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 98 transitions. [2025-02-08 14:15:20,439 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6805555555555556 [2025-02-08 14:15:20,447 INFO L175 Difference]: Start difference. First operand has 37 places, 32 transitions, 73 flow. Second operand 4 states and 98 transitions. [2025-02-08 14:15:20,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 57 transitions, 223 flow [2025-02-08 14:15:20,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 57 transitions, 216 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-08 14:15:20,463 INFO L231 Difference]: Finished difference. Result has 39 places, 34 transitions, 92 flow [2025-02-08 14:15:20,470 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=92, PETRI_PLACES=39, PETRI_TRANSITIONS=34} [2025-02-08 14:15:20,476 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 2 predicate places. [2025-02-08 14:15:20,477 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 34 transitions, 92 flow [2025-02-08 14:15:20,477 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:15:20,477 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:15:20,477 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:15:20,478 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-08 14:15:20,478 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2025-02-08 14:15:20,482 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:15:20,482 INFO L85 PathProgramCache]: Analyzing trace with hash 1266861870, now seen corresponding path program 1 times [2025-02-08 14:15:20,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:15:20,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012755967] [2025-02-08 14:15:20,483 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:15:20,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:15:20,504 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-08 14:15:20,525 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-08 14:15:20,532 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:15:20,533 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:15:20,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:15:20,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:15:20,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012755967] [2025-02-08 14:15:20,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012755967] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:15:20,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:15:20,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 14:15:20,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436927615] [2025-02-08 14:15:20,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:15:20,805 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:15:20,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:15:20,805 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:15:20,805 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:15:20,831 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 36 [2025-02-08 14:15:20,832 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 34 transitions, 92 flow. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:15:20,832 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:15:20,832 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 36 [2025-02-08 14:15:20,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:15:21,356 INFO L124 PetriNetUnfolderBase]: 543/1169 cut-off events. [2025-02-08 14:15:21,360 INFO L125 PetriNetUnfolderBase]: For 279/305 co-relation queries the response was YES. [2025-02-08 14:15:21,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2385 conditions, 1169 events. 543/1169 cut-off events. For 279/305 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 6668 event pairs, 313 based on Foata normal form. 50/1184 useless extension candidates. Maximal degree in co-relation 1563. Up to 609 conditions per place. [2025-02-08 14:15:21,379 INFO L140 encePairwiseOnDemand]: 30/36 looper letters, 48 selfloop transitions, 3 changer transitions 0/61 dead transitions. [2025-02-08 14:15:21,380 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 61 transitions, 282 flow [2025-02-08 14:15:21,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:15:21,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:15:21,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 96 transitions. [2025-02-08 14:15:21,382 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2025-02-08 14:15:21,382 INFO L175 Difference]: Start difference. First operand has 39 places, 34 transitions, 92 flow. Second operand 4 states and 96 transitions. [2025-02-08 14:15:21,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 61 transitions, 282 flow [2025-02-08 14:15:21,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 61 transitions, 276 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 14:15:21,384 INFO L231 Difference]: Finished difference. Result has 43 places, 36 transitions, 114 flow [2025-02-08 14:15:21,388 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=114, PETRI_PLACES=43, PETRI_TRANSITIONS=36} [2025-02-08 14:15:21,389 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 6 predicate places. [2025-02-08 14:15:21,390 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 36 transitions, 114 flow [2025-02-08 14:15:21,390 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:15:21,390 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:15:21,390 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2025-02-08 14:15:21,391 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-08 14:15:21,391 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2025-02-08 14:15:21,392 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:15:21,394 INFO L85 PathProgramCache]: Analyzing trace with hash 1020315659, now seen corresponding path program 1 times [2025-02-08 14:15:21,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:15:21,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879119106] [2025-02-08 14:15:21,394 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:15:21,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:15:21,416 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-02-08 14:15:21,437 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-02-08 14:15:21,444 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:15:21,444 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:15:21,682 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:15:21,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:15:21,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879119106] [2025-02-08 14:15:21,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879119106] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:15:21,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [949458797] [2025-02-08 14:15:21,683 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:15:21,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:15:21,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:15:21,736 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 14:15:21,740 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-08 14:15:21,868 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-02-08 14:15:21,909 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-02-08 14:15:21,909 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:15:21,909 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:15:21,915 INFO L256 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-08 14:15:21,918 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:15:22,030 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:15:22,030 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 14:15:22,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [949458797] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:15:22,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 14:15:22,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2025-02-08 14:15:22,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363526871] [2025-02-08 14:15:22,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:15:22,031 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 14:15:22,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:15:22,033 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 14:15:22,037 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-02-08 14:15:22,066 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 36 [2025-02-08 14:15:22,067 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 36 transitions, 114 flow. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:15:22,067 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:15:22,067 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 36 [2025-02-08 14:15:22,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:15:22,735 INFO L124 PetriNetUnfolderBase]: 507/1078 cut-off events. [2025-02-08 14:15:22,740 INFO L125 PetriNetUnfolderBase]: For 363/393 co-relation queries the response was YES. [2025-02-08 14:15:22,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2414 conditions, 1078 events. 507/1078 cut-off events. For 363/393 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 5952 event pairs, 59 based on Foata normal form. 26/1078 useless extension candidates. Maximal degree in co-relation 2240. Up to 370 conditions per place. [2025-02-08 14:15:22,753 INFO L140 encePairwiseOnDemand]: 32/36 looper letters, 71 selfloop transitions, 5 changer transitions 0/86 dead transitions. [2025-02-08 14:15:22,754 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 86 transitions, 436 flow [2025-02-08 14:15:22,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 14:15:22,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 14:15:22,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 139 transitions. [2025-02-08 14:15:22,759 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6435185185185185 [2025-02-08 14:15:22,759 INFO L175 Difference]: Start difference. First operand has 43 places, 36 transitions, 114 flow. Second operand 6 states and 139 transitions. [2025-02-08 14:15:22,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 86 transitions, 436 flow [2025-02-08 14:15:22,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 86 transitions, 426 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 14:15:22,769 INFO L231 Difference]: Finished difference. Result has 46 places, 35 transitions, 118 flow [2025-02-08 14:15:22,769 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=118, PETRI_PLACES=46, PETRI_TRANSITIONS=35} [2025-02-08 14:15:22,770 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 9 predicate places. [2025-02-08 14:15:22,770 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 35 transitions, 118 flow [2025-02-08 14:15:22,770 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:15:22,771 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:15:22,771 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2025-02-08 14:15:22,807 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-02-08 14:15:22,975 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:15:22,977 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2025-02-08 14:15:22,979 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:15:22,979 INFO L85 PathProgramCache]: Analyzing trace with hash 1565014664, now seen corresponding path program 1 times [2025-02-08 14:15:22,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:15:22,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893594712] [2025-02-08 14:15:22,981 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:15:22,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:15:23,006 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-02-08 14:15:23,022 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-02-08 14:15:23,022 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:15:23,022 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:15:23,059 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 14:15:23,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:15:23,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893594712] [2025-02-08 14:15:23,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893594712] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:15:23,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:15:23,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 14:15:23,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376844462] [2025-02-08 14:15:23,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:15:23,060 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:15:23,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:15:23,061 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:15:23,061 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:15:23,066 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 36 [2025-02-08 14:15:23,067 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 35 transitions, 118 flow. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:15:23,067 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:15:23,067 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 36 [2025-02-08 14:15:23,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:15:23,438 INFO L124 PetriNetUnfolderBase]: 545/1121 cut-off events. [2025-02-08 14:15:23,438 INFO L125 PetriNetUnfolderBase]: For 606/638 co-relation queries the response was YES. [2025-02-08 14:15:23,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2608 conditions, 1121 events. 545/1121 cut-off events. For 606/638 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 6256 event pairs, 94 based on Foata normal form. 26/1129 useless extension candidates. Maximal degree in co-relation 1221. Up to 576 conditions per place. [2025-02-08 14:15:23,457 INFO L140 encePairwiseOnDemand]: 31/36 looper letters, 38 selfloop transitions, 6 changer transitions 6/59 dead transitions. [2025-02-08 14:15:23,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 59 transitions, 296 flow [2025-02-08 14:15:23,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:15:23,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:15:23,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 87 transitions. [2025-02-08 14:15:23,461 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6041666666666666 [2025-02-08 14:15:23,461 INFO L175 Difference]: Start difference. First operand has 46 places, 35 transitions, 118 flow. Second operand 4 states and 87 transitions. [2025-02-08 14:15:23,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 59 transitions, 296 flow [2025-02-08 14:15:23,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 59 transitions, 287 flow, removed 1 selfloop flow, removed 4 redundant places. [2025-02-08 14:15:23,472 INFO L231 Difference]: Finished difference. Result has 45 places, 33 transitions, 119 flow [2025-02-08 14:15:23,473 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=119, PETRI_PLACES=45, PETRI_TRANSITIONS=33} [2025-02-08 14:15:23,474 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 8 predicate places. [2025-02-08 14:15:23,476 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 33 transitions, 119 flow [2025-02-08 14:15:23,477 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:15:23,477 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:15:23,477 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:15:23,477 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-08 14:15:23,478 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2025-02-08 14:15:23,478 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:15:23,481 INFO L85 PathProgramCache]: Analyzing trace with hash -1795304729, now seen corresponding path program 1 times [2025-02-08 14:15:23,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:15:23,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005646857] [2025-02-08 14:15:23,482 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:15:23,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:15:23,497 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-02-08 14:15:23,515 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-08 14:15:23,518 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:15:23,522 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:15:23,734 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:15:23,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:15:23,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005646857] [2025-02-08 14:15:23,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005646857] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:15:23,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1848976432] [2025-02-08 14:15:23,738 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:15:23,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:15:23,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:15:23,748 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 14:15:23,752 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-08 14:15:23,850 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-02-08 14:15:23,895 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-08 14:15:23,896 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:15:23,896 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:15:23,901 INFO L256 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-08 14:15:23,902 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:15:24,009 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:15:24,010 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 14:15:24,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1848976432] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:15:24,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 14:15:24,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2025-02-08 14:15:24,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515606297] [2025-02-08 14:15:24,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:15:24,015 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 14:15:24,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:15:24,015 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 14:15:24,015 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2025-02-08 14:15:24,031 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 36 [2025-02-08 14:15:24,031 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 33 transitions, 119 flow. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:15:24,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:15:24,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 36 [2025-02-08 14:15:24,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:15:24,423 INFO L124 PetriNetUnfolderBase]: 469/970 cut-off events. [2025-02-08 14:15:24,424 INFO L125 PetriNetUnfolderBase]: For 684/684 co-relation queries the response was YES. [2025-02-08 14:15:24,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2344 conditions, 970 events. 469/970 cut-off events. For 684/684 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 5069 event pairs, 33 based on Foata normal form. 25/966 useless extension candidates. Maximal degree in co-relation 1507. Up to 397 conditions per place. [2025-02-08 14:15:24,440 INFO L140 encePairwiseOnDemand]: 32/36 looper letters, 41 selfloop transitions, 5 changer transitions 0/54 dead transitions. [2025-02-08 14:15:24,442 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 54 transitions, 309 flow [2025-02-08 14:15:24,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:15:24,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:15:24,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 83 transitions. [2025-02-08 14:15:24,447 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5763888888888888 [2025-02-08 14:15:24,447 INFO L175 Difference]: Start difference. First operand has 45 places, 33 transitions, 119 flow. Second operand 4 states and 83 transitions. [2025-02-08 14:15:24,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 54 transitions, 309 flow [2025-02-08 14:15:24,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 54 transitions, 287 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-08 14:15:24,456 INFO L231 Difference]: Finished difference. Result has 43 places, 32 transitions, 117 flow [2025-02-08 14:15:24,457 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=107, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=117, PETRI_PLACES=43, PETRI_TRANSITIONS=32} [2025-02-08 14:15:24,458 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 6 predicate places. [2025-02-08 14:15:24,461 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 32 transitions, 117 flow [2025-02-08 14:15:24,461 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:15:24,462 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:15:24,462 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:15:24,527 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-02-08 14:15:24,665 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:15:24,666 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2025-02-08 14:15:24,666 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:15:24,666 INFO L85 PathProgramCache]: Analyzing trace with hash 180128569, now seen corresponding path program 1 times [2025-02-08 14:15:24,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:15:24,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124970163] [2025-02-08 14:15:24,667 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:15:24,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:15:24,686 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-02-08 14:15:24,699 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-02-08 14:15:24,703 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:15:24,704 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:15:24,826 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 14:15:24,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:15:24,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124970163] [2025-02-08 14:15:24,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124970163] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:15:24,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:15:24,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 14:15:24,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009933551] [2025-02-08 14:15:24,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:15:24,827 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:15:24,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:15:24,828 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:15:24,828 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:15:24,843 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 36 [2025-02-08 14:15:24,843 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 32 transitions, 117 flow. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:15:24,843 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:15:24,843 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 36 [2025-02-08 14:15:24,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:15:25,246 INFO L124 PetriNetUnfolderBase]: 432/918 cut-off events. [2025-02-08 14:15:25,249 INFO L125 PetriNetUnfolderBase]: For 663/663 co-relation queries the response was YES. [2025-02-08 14:15:25,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2229 conditions, 918 events. 432/918 cut-off events. For 663/663 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 4819 event pairs, 68 based on Foata normal form. 25/937 useless extension candidates. Maximal degree in co-relation 1435. Up to 434 conditions per place. [2025-02-08 14:15:25,253 INFO L140 encePairwiseOnDemand]: 31/36 looper letters, 0 selfloop transitions, 0 changer transitions 54/54 dead transitions. [2025-02-08 14:15:25,253 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 54 transitions, 295 flow [2025-02-08 14:15:25,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:15:25,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:15:25,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 83 transitions. [2025-02-08 14:15:25,259 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5763888888888888 [2025-02-08 14:15:25,259 INFO L175 Difference]: Start difference. First operand has 43 places, 32 transitions, 117 flow. Second operand 4 states and 83 transitions. [2025-02-08 14:15:25,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 54 transitions, 295 flow [2025-02-08 14:15:25,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 54 transitions, 285 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-08 14:15:25,268 INFO L231 Difference]: Finished difference. Result has 42 places, 0 transitions, 0 flow [2025-02-08 14:15:25,268 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=103, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=42, PETRI_TRANSITIONS=0} [2025-02-08 14:15:25,269 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 5 predicate places. [2025-02-08 14:15:25,270 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 0 transitions, 0 flow [2025-02-08 14:15:25,271 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:15:25,277 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2025-02-08 14:15:25,278 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 10 remaining) [2025-02-08 14:15:25,278 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 10 remaining) [2025-02-08 14:15:25,278 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 10 remaining) [2025-02-08 14:15:25,278 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 10 remaining) [2025-02-08 14:15:25,278 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 10 remaining) [2025-02-08 14:15:25,278 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 10 remaining) [2025-02-08 14:15:25,278 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 10 remaining) [2025-02-08 14:15:25,278 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 10 remaining) [2025-02-08 14:15:25,278 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 10 remaining) [2025-02-08 14:15:25,278 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-08 14:15:25,279 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2025-02-08 14:15:25,289 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-02-08 14:15:25,293 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-02-08 14:15:25,304 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.02 02:15:25 BasicIcfg [2025-02-08 14:15:25,309 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-02-08 14:15:25,310 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-02-08 14:15:25,310 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-02-08 14:15:25,311 INFO L274 PluginConnector]: Witness Printer initialized [2025-02-08 14:15:25,311 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 02:15:19" (3/4) ... [2025-02-08 14:15:25,313 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-02-08 14:15:25,319 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure t1 [2025-02-08 14:15:25,320 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure t2 [2025-02-08 14:15:25,330 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 47 nodes and edges [2025-02-08 14:15:25,330 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2025-02-08 14:15:25,330 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2025-02-08 14:15:25,331 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2025-02-08 14:15:25,540 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-02-08 14:15:25,540 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.yml [2025-02-08 14:15:25,541 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-02-08 14:15:25,541 INFO L158 Benchmark]: Toolchain (without parser) took 8007.81ms. Allocated memory was 142.6MB in the beginning and 184.5MB in the end (delta: 41.9MB). Free memory was 111.7MB in the beginning and 73.8MB in the end (delta: 37.9MB). Peak memory consumption was 81.9MB. Max. memory is 16.1GB. [2025-02-08 14:15:25,541 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 201.3MB. Free memory is still 123.7MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 14:15:25,542 INFO L158 Benchmark]: CACSL2BoogieTranslator took 460.85ms. Allocated memory is still 142.6MB. Free memory was 111.4MB in the beginning and 91.2MB in the end (delta: 20.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-02-08 14:15:25,542 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.34ms. Allocated memory is still 142.6MB. Free memory was 91.2MB in the beginning and 88.9MB in the end (delta: 2.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-08 14:15:25,542 INFO L158 Benchmark]: Boogie Preprocessor took 54.28ms. Allocated memory is still 142.6MB. Free memory was 88.9MB in the beginning and 86.8MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 14:15:25,542 INFO L158 Benchmark]: IcfgBuilder took 1049.23ms. Allocated memory is still 142.6MB. Free memory was 86.8MB in the beginning and 45.3MB in the end (delta: 41.5MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. [2025-02-08 14:15:25,542 INFO L158 Benchmark]: TraceAbstraction took 6152.47ms. Allocated memory was 142.6MB in the beginning and 184.5MB in the end (delta: 41.9MB). Free memory was 44.6MB in the beginning and 78.5MB in the end (delta: -33.9MB). Peak memory consumption was 6.4MB. Max. memory is 16.1GB. [2025-02-08 14:15:25,543 INFO L158 Benchmark]: Witness Printer took 230.41ms. Allocated memory is still 184.5MB. Free memory was 78.5MB in the beginning and 73.8MB in the end (delta: 4.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-08 14:15:25,544 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 201.3MB. Free memory is still 123.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 460.85ms. Allocated memory is still 142.6MB. Free memory was 111.4MB in the beginning and 91.2MB in the end (delta: 20.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 49.34ms. Allocated memory is still 142.6MB. Free memory was 91.2MB in the beginning and 88.9MB in the end (delta: 2.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 54.28ms. Allocated memory is still 142.6MB. Free memory was 88.9MB in the beginning and 86.8MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 1049.23ms. Allocated memory is still 142.6MB. Free memory was 86.8MB in the beginning and 45.3MB in the end (delta: 41.5MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. * TraceAbstraction took 6152.47ms. Allocated memory was 142.6MB in the beginning and 184.5MB in the end (delta: 41.9MB). Free memory was 44.6MB in the beginning and 78.5MB in the end (delta: -33.9MB). Peak memory consumption was 6.4MB. Max. memory is 16.1GB. * Witness Printer took 230.41ms. Allocated memory is still 184.5MB. Free memory was 78.5MB in the beginning and 73.8MB in the end (delta: 4.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 725]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 725]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 743]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 743]: 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, 63 locations, 10 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: 5.9s, OverallIterations: 6, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 219 SdHoareTripleChecker+Valid, 1.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 188 mSDsluCounter, 46 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 24 mSDsCounter, 13 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 666 IncrementalHoareTripleChecker+Invalid, 679 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 13 mSolverCounterUnsat, 22 mSDtfsCounter, 666 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 68 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=119occurred in iteration=4, InterpolantAutomatonStates: 26, 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: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 138 NumberOfCodeBlocks, 138 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 130 ConstructedInterpolants, 0 QuantifiedInterpolants, 308 SizeOfPredicates, 3 NumberOfNonLiveVariables, 324 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 8 InterpolantComputations, 6 PerfectInterpolantSequences, 30/44 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-02-08 14:15:25,567 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