./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/pthread-deagle/circular_buffer_bad.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_bad.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 a5ee9b9286f55973fff2cea9c449f3602c5be2a48fed2e7e6cce6beebc18d9bc --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 14:15:09,217 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 14:15:09,267 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-02-08 14:15:09,271 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 14:15:09,271 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 14:15:09,290 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 14:15:09,290 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 14:15:09,290 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 14:15:09,291 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 14:15:09,291 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 14:15:09,291 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 14:15:09,291 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 14:15:09,291 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 14:15:09,291 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 14:15:09,291 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 14:15:09,291 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 14:15:09,291 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-08 14:15:09,292 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 14:15:09,292 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 14:15:09,292 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 14:15:09,292 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 14:15:09,292 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-08 14:15:09,292 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 14:15:09,292 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-08 14:15:09,292 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-02-08 14:15:09,292 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 14:15:09,292 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 14:15:09,292 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-08 14:15:09,292 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 14:15:09,292 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 14:15:09,292 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 14:15:09,292 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 14:15:09,292 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 14:15:09,292 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 14:15:09,292 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 14:15:09,293 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 14:15:09,293 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 14:15:09,293 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-08 14:15:09,293 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-08 14:15:09,293 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 14:15:09,293 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 14:15:09,293 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 14:15:09,293 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 14:15:09,293 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 14:15:09,293 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 14:15:09,293 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 -> a5ee9b9286f55973fff2cea9c449f3602c5be2a48fed2e7e6cce6beebc18d9bc [2025-02-08 14:15:09,531 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 14:15:09,537 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 14:15:09,538 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 14:15:09,541 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 14:15:09,542 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 14:15:09,543 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-deagle/circular_buffer_bad.i [2025-02-08 14:15:10,713 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/5620c81b0/0a75fd9165b74632a630941dccb757aa/FLAG907024280 [2025-02-08 14:15:11,017 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 14:15:11,018 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-deagle/circular_buffer_bad.i [2025-02-08 14:15:11,033 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/5620c81b0/0a75fd9165b74632a630941dccb757aa/FLAG907024280 [2025-02-08 14:15:11,289 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/5620c81b0/0a75fd9165b74632a630941dccb757aa [2025-02-08 14:15:11,291 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 14:15:11,292 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 14:15:11,293 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 14:15:11,293 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 14:15:11,296 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 14:15:11,297 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 02:15:11" (1/1) ... [2025-02-08 14:15:11,297 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cf6305b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:15:11, skipping insertion in model container [2025-02-08 14:15:11,298 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 02:15:11" (1/1) ... [2025-02-08 14:15:11,322 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 14:15:11,539 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 14:15:11,550 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 14:15:11,585 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 14:15:11,616 INFO L204 MainTranslator]: Completed translation [2025-02-08 14:15:11,617 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:15:11 WrapperNode [2025-02-08 14:15:11,617 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 14:15:11,618 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 14:15:11,619 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 14:15:11,619 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 14:15:11,623 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:15:11" (1/1) ... [2025-02-08 14:15:11,637 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:15:11" (1/1) ... [2025-02-08 14:15:11,650 INFO L138 Inliner]: procedures = 168, calls = 40, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 140 [2025-02-08 14:15:11,650 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 14:15:11,651 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 14:15:11,651 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 14:15:11,651 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 14:15:11,657 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:15:11" (1/1) ... [2025-02-08 14:15:11,657 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:15:11" (1/1) ... [2025-02-08 14:15:11,659 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:15:11" (1/1) ... [2025-02-08 14:15:11,681 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 14:15:11,681 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:15:11" (1/1) ... [2025-02-08 14:15:11,681 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:15:11" (1/1) ... [2025-02-08 14:15:11,686 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:15:11" (1/1) ... [2025-02-08 14:15:11,686 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:15:11" (1/1) ... [2025-02-08 14:15:11,693 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:15:11" (1/1) ... [2025-02-08 14:15:11,694 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:15:11" (1/1) ... [2025-02-08 14:15:11,698 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 14:15:11,698 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 14:15:11,698 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 14:15:11,698 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 14:15:11,701 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:15:11" (1/1) ... [2025-02-08 14:15:11,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 14:15:11,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:15:11,726 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 14:15:11,728 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 14:15:11,745 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-08 14:15:11,745 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-08 14:15:11,745 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-02-08 14:15:11,746 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-02-08 14:15:11,746 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2025-02-08 14:15:11,746 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2025-02-08 14:15:11,746 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2025-02-08 14:15:11,746 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2025-02-08 14:15:11,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-08 14:15:11,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-08 14:15:11,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-02-08 14:15:11,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-02-08 14:15:11,747 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-02-08 14:15:11,747 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 14:15:11,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2025-02-08 14:15:11,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2025-02-08 14:15:11,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2025-02-08 14:15:11,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2025-02-08 14:15:11,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 14:15:11,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-08 14:15:11,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-02-08 14:15:11,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-02-08 14:15:11,748 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-02-08 14:15:11,748 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 14:15:11,748 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 14:15:11,749 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 14:15:11,854 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 14:15:11,856 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 14:15:12,031 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L731: ~receive~0 := 1; [2025-02-08 14:15:12,031 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L729: havoc #t~ret4#1; [2025-02-08 14:15:12,031 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L729-1: assume { :end_inline_insertLogElement } true;assume -2147483648 <= #t~ret4#1 && #t~ret4#1 <= 2147483647; [2025-02-08 14:15:12,031 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L729-2: havoc insertLogElement_#in~b#1; [2025-02-08 14:15:12,031 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L729-3: havoc insertLogElement_~b#1; [2025-02-08 14:15:12,031 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L729-4: #t~ret4#1 := insertLogElement_#res#1; [2025-02-08 14:15:12,031 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L730: ~send~0 := 0; [2025-02-08 14:15:12,073 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L746: assume { :end_inline_reach_error } true;assume false; [2025-02-08 14:15:12,074 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L746-1: havoc reach_error_#t~nondet0#1.base, reach_error_#t~nondet0#1.offset; [2025-02-08 14:15:12,074 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L746-2: assume { :begin_inline_reach_error } true;havoc reach_error_#t~nondet0#1.base, reach_error_#t~nondet0#1.offset; [2025-02-08 14:15:12,074 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L747: ~receive~0 := 0; [2025-02-08 14:15:12,074 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L681: assume false; [2025-02-08 14:15:12,074 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L681: assume !false; [2025-02-08 14:15:12,074 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L681-1: assume false; [2025-02-08 14:15:12,074 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L698: havoc removeLogElement_#t~mem2#1; [2025-02-08 14:15:12,074 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L748: ~send~0 := 1; [2025-02-08 14:15:12,074 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L745: assume #t~ret8#1 == ~i~1#1; [2025-02-08 14:15:12,074 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L745: assume !(#t~ret8#1 == ~i~1#1); [2025-02-08 14:15:12,074 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L745-1: havoc #t~ret8#1; [2025-02-08 14:15:12,074 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L745-2: havoc #t~ret8#1; [2025-02-08 14:15:12,075 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L745-3: assume { :end_inline_removeLogElement } true;assume -2147483648 <= #t~ret8#1 && #t~ret8#1 <= 2147483647; [2025-02-08 14:15:12,075 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L745-4: havoc removeLogElement_#t~post1#1, removeLogElement_#t~mem2#1; [2025-02-08 14:15:12,075 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L745-5: #t~ret8#1 := removeLogElement_#res#1; [2025-02-08 14:15:12,078 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-08 14:15:12,078 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 14:15:12,227 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 14:15:12,227 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 14:15:12,227 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 02:15:12 BoogieIcfgContainer [2025-02-08 14:15:12,227 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 14:15:12,229 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 14:15:12,229 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 14:15:12,233 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 14:15:12,234 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 02:15:11" (1/3) ... [2025-02-08 14:15:12,235 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49921f33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 02:15:12, skipping insertion in model container [2025-02-08 14:15:12,235 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:15:11" (2/3) ... [2025-02-08 14:15:12,235 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49921f33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 02:15:12, skipping insertion in model container [2025-02-08 14:15:12,235 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 02:15:12" (3/3) ... [2025-02-08 14:15:12,236 INFO L128 eAbstractionObserver]: Analyzing ICFG circular_buffer_bad.i [2025-02-08 14:15:12,247 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 14:15:12,248 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG circular_buffer_bad.i that has 3 procedures, 35 locations, 1 initial locations, 2 loop locations, and 4 error locations. [2025-02-08 14:15:12,248 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-08 14:15:12,302 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-02-08 14:15:12,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 41 places, 36 transitions, 86 flow [2025-02-08 14:15:12,350 INFO L124 PetriNetUnfolderBase]: 2/34 cut-off events. [2025-02-08 14:15:12,351 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-02-08 14:15:12,354 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 4. Compared 77 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 14:15:12,354 INFO L82 GeneralOperation]: Start removeDead. Operand has 41 places, 36 transitions, 86 flow [2025-02-08 14:15:12,356 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 37 places, 32 transitions, 73 flow [2025-02-08 14:15:12,363 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 14:15:12,372 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;@1692ce91, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 14:15:12,373 INFO L334 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2025-02-08 14:15:12,386 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 14:15:12,386 INFO L124 PetriNetUnfolderBase]: 1/25 cut-off events. [2025-02-08 14:15:12,386 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-02-08 14:15:12,386 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:15:12,387 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:15:12,388 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 14:15:12,392 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:15:12,392 INFO L85 PathProgramCache]: Analyzing trace with hash 1907297556, now seen corresponding path program 1 times [2025-02-08 14:15:12,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:15:12,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305500107] [2025-02-08 14:15:12,398 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:15:12,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:15:12,463 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-08 14:15:12,490 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-08 14:15:12,490 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:15:12,490 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:15:12,646 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 14:15:12,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:15:12,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305500107] [2025-02-08 14:15:12,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305500107] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:15:12,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:15:12,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 14:15:12,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118903353] [2025-02-08 14:15:12,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:15:12,656 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:15:12,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:15:12,676 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:15:12,677 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:15:12,690 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 36 [2025-02-08 14:15:12,693 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 14:15:12,693 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:15:12,693 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 36 [2025-02-08 14:15:12,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:15:12,893 INFO L124 PetriNetUnfolderBase]: 330/708 cut-off events. [2025-02-08 14:15:12,893 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2025-02-08 14:15:12,895 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 3633 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 14:15:12,899 INFO L140 encePairwiseOnDemand]: 30/36 looper letters, 44 selfloop transitions, 3 changer transitions 0/57 dead transitions. [2025-02-08 14:15:12,899 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 57 transitions, 223 flow [2025-02-08 14:15:12,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:15:12,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:15:12,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 98 transitions. [2025-02-08 14:15:12,908 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6805555555555556 [2025-02-08 14:15:12,909 INFO L175 Difference]: Start difference. First operand has 37 places, 32 transitions, 73 flow. Second operand 4 states and 98 transitions. [2025-02-08 14:15:12,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 57 transitions, 223 flow [2025-02-08 14:15:12,913 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 14:15:12,915 INFO L231 Difference]: Finished difference. Result has 39 places, 34 transitions, 92 flow [2025-02-08 14:15:12,917 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 14:15:12,962 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 2 predicate places. [2025-02-08 14:15:12,962 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 34 transitions, 92 flow [2025-02-08 14:15:12,962 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 14:15:12,962 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:15:12,963 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:15:12,963 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-08 14:15:12,963 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 14:15:12,964 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:15:12,964 INFO L85 PathProgramCache]: Analyzing trace with hash 491907495, now seen corresponding path program 1 times [2025-02-08 14:15:12,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:15:12,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647648558] [2025-02-08 14:15:12,964 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:15:12,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:15:12,977 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-08 14:15:12,988 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-08 14:15:12,988 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:15:12,988 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:15:13,058 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 14:15:13,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:15:13,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647648558] [2025-02-08 14:15:13,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647648558] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:15:13,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:15:13,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 14:15:13,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063071094] [2025-02-08 14:15:13,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:15:13,061 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:15:13,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:15:13,062 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:15:13,062 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:15:13,073 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 36 [2025-02-08 14:15:13,074 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 14:15:13,074 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:15:13,074 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 36 [2025-02-08 14:15:13,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:15:13,273 INFO L124 PetriNetUnfolderBase]: 543/1169 cut-off events. [2025-02-08 14:15:13,273 INFO L125 PetriNetUnfolderBase]: For 279/305 co-relation queries the response was YES. [2025-02-08 14:15:13,275 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 6669 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 14:15:13,283 INFO L140 encePairwiseOnDemand]: 30/36 looper letters, 48 selfloop transitions, 3 changer transitions 0/61 dead transitions. [2025-02-08 14:15:13,283 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 61 transitions, 282 flow [2025-02-08 14:15:13,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:15:13,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:15:13,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 96 transitions. [2025-02-08 14:15:13,286 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2025-02-08 14:15:13,286 INFO L175 Difference]: Start difference. First operand has 39 places, 34 transitions, 92 flow. Second operand 4 states and 96 transitions. [2025-02-08 14:15:13,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 61 transitions, 282 flow [2025-02-08 14:15:13,287 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 14:15:13,287 INFO L231 Difference]: Finished difference. Result has 43 places, 36 transitions, 114 flow [2025-02-08 14:15:13,288 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 14:15:13,288 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 6 predicate places. [2025-02-08 14:15:13,288 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 36 transitions, 114 flow [2025-02-08 14:15:13,288 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 14:15:13,288 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:15:13,288 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2025-02-08 14:15:13,289 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-08 14:15:13,289 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 14:15:13,290 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:15:13,290 INFO L85 PathProgramCache]: Analyzing trace with hash -83724723, now seen corresponding path program 1 times [2025-02-08 14:15:13,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:15:13,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026279172] [2025-02-08 14:15:13,290 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:15:13,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:15:13,313 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-02-08 14:15:13,320 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-02-08 14:15:13,320 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:15:13,320 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:15:13,417 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 14:15:13,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:15:13,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026279172] [2025-02-08 14:15:13,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026279172] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:15:13,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1373984315] [2025-02-08 14:15:13,417 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:15:13,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:15:13,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:15:13,420 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 14:15:13,422 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 14:15:13,479 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-02-08 14:15:13,497 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-02-08 14:15:13,497 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:15:13,497 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:15:13,499 INFO L256 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-08 14:15:13,501 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:15:13,555 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 14:15:13,555 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 14:15:13,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1373984315] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:15:13,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 14:15:13,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2025-02-08 14:15:13,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021049812] [2025-02-08 14:15:13,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:15:13,556 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 14:15:13,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:15:13,556 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 14:15:13,557 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2025-02-08 14:15:13,564 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 36 [2025-02-08 14:15:13,565 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 36 transitions, 114 flow. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 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 14:15:13,565 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:15:13,565 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 36 [2025-02-08 14:15:13,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:15:13,752 INFO L124 PetriNetUnfolderBase]: 583/1162 cut-off events. [2025-02-08 14:15:13,753 INFO L125 PetriNetUnfolderBase]: For 351/405 co-relation queries the response was YES. [2025-02-08 14:15:13,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2646 conditions, 1162 events. 583/1162 cut-off events. For 351/405 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 6448 event pairs, 11 based on Foata normal form. 26/1162 useless extension candidates. Maximal degree in co-relation 2456. Up to 626 conditions per place. [2025-02-08 14:15:13,758 INFO L140 encePairwiseOnDemand]: 32/36 looper letters, 45 selfloop transitions, 5 changer transitions 0/59 dead transitions. [2025-02-08 14:15:13,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 59 transitions, 294 flow [2025-02-08 14:15:13,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:15:13,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:15:13,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 87 transitions. [2025-02-08 14:15:13,759 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6041666666666666 [2025-02-08 14:15:13,759 INFO L175 Difference]: Start difference. First operand has 43 places, 36 transitions, 114 flow. Second operand 4 states and 87 transitions. [2025-02-08 14:15:13,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 59 transitions, 294 flow [2025-02-08 14:15:13,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 59 transitions, 288 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 14:15:13,761 INFO L231 Difference]: Finished difference. Result has 44 places, 35 transitions, 118 flow [2025-02-08 14:15:13,761 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=4, PETRI_FLOW=118, PETRI_PLACES=44, PETRI_TRANSITIONS=35} [2025-02-08 14:15:13,761 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 7 predicate places. [2025-02-08 14:15:13,762 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 35 transitions, 118 flow [2025-02-08 14:15:13,762 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 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 14:15:13,762 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:15:13,762 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2025-02-08 14:15:13,769 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 14:15:13,966 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 14:15:13,966 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 14:15:13,966 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:15:13,966 INFO L85 PathProgramCache]: Analyzing trace with hash 1699501178, now seen corresponding path program 1 times [2025-02-08 14:15:13,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:15:13,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227171473] [2025-02-08 14:15:13,967 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:15:13,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:15:13,974 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-02-08 14:15:13,982 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-02-08 14:15:13,985 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:15:13,986 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:15:14,030 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 14:15:14,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:15:14,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227171473] [2025-02-08 14:15:14,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227171473] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:15:14,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:15:14,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 14:15:14,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649928904] [2025-02-08 14:15:14,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:15:14,031 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:15:14,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:15:14,032 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:15:14,032 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:15:14,036 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 36 [2025-02-08 14:15:14,037 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 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 14:15:14,037 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:15:14,037 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 36 [2025-02-08 14:15:14,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:15:14,174 INFO L124 PetriNetUnfolderBase]: 545/1127 cut-off events. [2025-02-08 14:15:14,174 INFO L125 PetriNetUnfolderBase]: For 603/635 co-relation queries the response was YES. [2025-02-08 14:15:14,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2614 conditions, 1127 events. 545/1127 cut-off events. For 603/635 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 6347 event pairs, 94 based on Foata normal form. 26/1139 useless extension candidates. Maximal degree in co-relation 1224. Up to 576 conditions per place. [2025-02-08 14:15:14,179 INFO L140 encePairwiseOnDemand]: 31/36 looper letters, 38 selfloop transitions, 6 changer transitions 6/59 dead transitions. [2025-02-08 14:15:14,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 59 transitions, 296 flow [2025-02-08 14:15:14,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:15:14,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:15:14,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 87 transitions. [2025-02-08 14:15:14,180 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6041666666666666 [2025-02-08 14:15:14,180 INFO L175 Difference]: Start difference. First operand has 44 places, 35 transitions, 118 flow. Second operand 4 states and 87 transitions. [2025-02-08 14:15:14,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 59 transitions, 296 flow [2025-02-08 14:15:14,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 59 transitions, 286 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-08 14:15:14,183 INFO L231 Difference]: Finished difference. Result has 44 places, 33 transitions, 118 flow [2025-02-08 14:15:14,183 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=40, 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=118, PETRI_PLACES=44, PETRI_TRANSITIONS=33} [2025-02-08 14:15:14,184 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 7 predicate places. [2025-02-08 14:15:14,184 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 33 transitions, 118 flow [2025-02-08 14:15:14,184 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 14:15:14,184 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:15:14,184 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:15:14,184 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-08 14:15:14,184 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 14:15:14,184 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:15:14,184 INFO L85 PathProgramCache]: Analyzing trace with hash -463362464, now seen corresponding path program 1 times [2025-02-08 14:15:14,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:15:14,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783496110] [2025-02-08 14:15:14,184 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:15:14,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:15:14,191 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-02-08 14:15:14,197 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-08 14:15:14,197 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:15:14,197 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:15:14,275 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 14:15:14,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:15:14,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783496110] [2025-02-08 14:15:14,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783496110] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:15:14,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1645624575] [2025-02-08 14:15:14,275 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:15:14,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:15:14,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:15:14,277 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 14:15:14,279 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 14:15:14,326 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-02-08 14:15:14,342 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-08 14:15:14,342 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:15:14,343 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:15:14,343 INFO L256 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-08 14:15:14,344 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:15:14,383 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 14:15:14,383 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 14:15:14,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1645624575] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:15:14,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 14:15:14,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2025-02-08 14:15:14,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129432520] [2025-02-08 14:15:14,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:15:14,384 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 14:15:14,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:15:14,385 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 14:15:14,385 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2025-02-08 14:15:14,394 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 36 [2025-02-08 14:15:14,394 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 33 transitions, 118 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 14:15:14,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:15:14,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 36 [2025-02-08 14:15:14,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:15:14,527 INFO L124 PetriNetUnfolderBase]: 469/967 cut-off events. [2025-02-08 14:15:14,527 INFO L125 PetriNetUnfolderBase]: For 689/689 co-relation queries the response was YES. [2025-02-08 14:15:14,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2315 conditions, 967 events. 469/967 cut-off events. For 689/689 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 5008 event pairs, 33 based on Foata normal form. 25/963 useless extension candidates. Maximal degree in co-relation 1483. Up to 397 conditions per place. [2025-02-08 14:15:14,534 INFO L140 encePairwiseOnDemand]: 32/36 looper letters, 41 selfloop transitions, 5 changer transitions 0/54 dead transitions. [2025-02-08 14:15:14,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 54 transitions, 306 flow [2025-02-08 14:15:14,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:15:14,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:15:14,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 83 transitions. [2025-02-08 14:15:14,536 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5763888888888888 [2025-02-08 14:15:14,537 INFO L175 Difference]: Start difference. First operand has 44 places, 33 transitions, 118 flow. Second operand 4 states and 83 transitions. [2025-02-08 14:15:14,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 54 transitions, 306 flow [2025-02-08 14:15:14,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 54 transitions, 284 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-08 14:15:14,540 INFO L231 Difference]: Finished difference. Result has 42 places, 32 transitions, 116 flow [2025-02-08 14:15:14,540 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=39, 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=116, PETRI_PLACES=42, PETRI_TRANSITIONS=32} [2025-02-08 14:15:14,540 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 5 predicate places. [2025-02-08 14:15:14,540 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 32 transitions, 116 flow [2025-02-08 14:15:14,540 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 14:15:14,541 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:15:14,541 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:15:14,549 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 14:15:14,741 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 14:15:14,741 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 14:15:14,742 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:15:14,742 INFO L85 PathProgramCache]: Analyzing trace with hash -1479334188, now seen corresponding path program 1 times [2025-02-08 14:15:14,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:15:14,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346094476] [2025-02-08 14:15:14,742 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:15:14,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:15:14,749 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-02-08 14:15:14,753 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-02-08 14:15:14,753 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:15:14,753 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:15:14,790 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 14:15:14,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:15:14,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346094476] [2025-02-08 14:15:14,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346094476] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:15:14,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:15:14,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 14:15:14,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251806690] [2025-02-08 14:15:14,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:15:14,791 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:15:14,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:15:14,791 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:15:14,791 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:15:14,796 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 36 [2025-02-08 14:15:14,796 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 32 transitions, 116 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 14:15:14,796 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:15:14,796 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 36 [2025-02-08 14:15:14,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:15:14,932 INFO L124 PetriNetUnfolderBase]: 432/915 cut-off events. [2025-02-08 14:15:14,932 INFO L125 PetriNetUnfolderBase]: For 669/669 co-relation queries the response was YES. [2025-02-08 14:15:14,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2202 conditions, 915 events. 432/915 cut-off events. For 669/669 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 4805 event pairs, 68 based on Foata normal form. 25/934 useless extension candidates. Maximal degree in co-relation 1413. Up to 434 conditions per place. [2025-02-08 14:15:14,935 INFO L140 encePairwiseOnDemand]: 31/36 looper letters, 0 selfloop transitions, 0 changer transitions 54/54 dead transitions. [2025-02-08 14:15:14,936 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 54 transitions, 292 flow [2025-02-08 14:15:14,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:15:14,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:15:14,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 83 transitions. [2025-02-08 14:15:14,937 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5763888888888888 [2025-02-08 14:15:14,937 INFO L175 Difference]: Start difference. First operand has 42 places, 32 transitions, 116 flow. Second operand 4 states and 83 transitions. [2025-02-08 14:15:14,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 54 transitions, 292 flow [2025-02-08 14:15:14,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 54 transitions, 282 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-08 14:15:14,940 INFO L231 Difference]: Finished difference. Result has 41 places, 0 transitions, 0 flow [2025-02-08 14:15:14,940 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=38, 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=41, PETRI_TRANSITIONS=0} [2025-02-08 14:15:14,940 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 4 predicate places. [2025-02-08 14:15:14,941 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 0 transitions, 0 flow [2025-02-08 14:15:14,941 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 14:15:14,947 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2025-02-08 14:15:14,947 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 10 remaining) [2025-02-08 14:15:14,947 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 10 remaining) [2025-02-08 14:15:14,947 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 10 remaining) [2025-02-08 14:15:14,947 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 10 remaining) [2025-02-08 14:15:14,947 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 10 remaining) [2025-02-08 14:15:14,947 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 10 remaining) [2025-02-08 14:15:14,947 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 10 remaining) [2025-02-08 14:15:14,947 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 10 remaining) [2025-02-08 14:15:14,947 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 10 remaining) [2025-02-08 14:15:14,947 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-08 14:15:14,948 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2025-02-08 14:15:14,954 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-02-08 14:15:14,954 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-02-08 14:15:14,958 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.02 02:15:14 BasicIcfg [2025-02-08 14:15:14,958 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-02-08 14:15:14,959 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-02-08 14:15:14,959 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-02-08 14:15:14,959 INFO L274 PluginConnector]: Witness Printer initialized [2025-02-08 14:15:14,960 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 02:15:12" (3/4) ... [2025-02-08 14:15:14,961 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-02-08 14:15:14,963 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure t1 [2025-02-08 14:15:14,963 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure t2 [2025-02-08 14:15:14,965 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 46 nodes and edges [2025-02-08 14:15:14,965 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2025-02-08 14:15:14,965 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2025-02-08 14:15:14,965 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2025-02-08 14:15:14,965 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-02-08 14:15:15,024 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-02-08 14:15:15,024 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.yml [2025-02-08 14:15:15,024 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-02-08 14:15:15,025 INFO L158 Benchmark]: Toolchain (without parser) took 3733.13ms. Allocated memory was 142.6MB in the beginning and 176.2MB in the end (delta: 33.6MB). Free memory was 111.3MB in the beginning and 99.9MB in the end (delta: 11.4MB). Peak memory consumption was 46.9MB. Max. memory is 16.1GB. [2025-02-08 14:15:15,025 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 201.3MB. Free memory is still 127.1MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 14:15:15,025 INFO L158 Benchmark]: CACSL2BoogieTranslator took 325.04ms. Allocated memory is still 142.6MB. Free memory was 110.9MB in the beginning and 90.8MB in the end (delta: 20.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-02-08 14:15:15,026 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.16ms. Allocated memory is still 142.6MB. Free memory was 90.8MB in the beginning and 88.8MB in the end (delta: 2.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-08 14:15:15,026 INFO L158 Benchmark]: Boogie Preprocessor took 46.76ms. Allocated memory is still 142.6MB. Free memory was 88.8MB in the beginning and 86.7MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 14:15:15,026 INFO L158 Benchmark]: IcfgBuilder took 529.21ms. Allocated memory is still 142.6MB. Free memory was 86.7MB in the beginning and 44.0MB in the end (delta: 42.7MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. [2025-02-08 14:15:15,026 INFO L158 Benchmark]: TraceAbstraction took 2729.56ms. Allocated memory was 142.6MB in the beginning and 176.2MB in the end (delta: 33.6MB). Free memory was 43.2MB in the beginning and 105.5MB in the end (delta: -62.2MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 14:15:15,026 INFO L158 Benchmark]: Witness Printer took 65.73ms. Allocated memory is still 176.2MB. Free memory was 105.5MB in the beginning and 99.9MB in the end (delta: 5.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-08 14:15:15,027 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 201.3MB. Free memory is still 127.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 325.04ms. Allocated memory is still 142.6MB. Free memory was 110.9MB in the beginning and 90.8MB in the end (delta: 20.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.16ms. Allocated memory is still 142.6MB. Free memory was 90.8MB in the beginning and 88.8MB in the end (delta: 2.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 46.76ms. Allocated memory is still 142.6MB. Free memory was 88.8MB in the beginning and 86.7MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 529.21ms. Allocated memory is still 142.6MB. Free memory was 86.7MB in the beginning and 44.0MB in the end (delta: 42.7MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. * TraceAbstraction took 2729.56ms. Allocated memory was 142.6MB in the beginning and 176.2MB in the end (delta: 33.6MB). Free memory was 43.2MB in the beginning and 105.5MB in the end (delta: -62.2MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 65.73ms. Allocated memory is still 176.2MB. Free memory was 105.5MB in the beginning and 99.9MB in the end (delta: 5.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 724]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 724]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 740]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 740]: 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: 2.6s, OverallIterations: 6, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 201 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 173 mSDsluCounter, 47 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 19 mSDsCounter, 15 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 542 IncrementalHoareTripleChecker+Invalid, 557 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 15 mSolverCounterUnsat, 28 mSDtfsCounter, 542 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 68 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=118occurred in iteration=3, InterpolantAutomatonStates: 24, 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, 0.6s InterpolantComputationTime, 138 NumberOfCodeBlocks, 138 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 130 ConstructedInterpolants, 0 QuantifiedInterpolants, 310 SizeOfPredicates, 2 NumberOfNonLiveVariables, 320 ConjunctsInSsa, 8 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 14:15:15,041 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