./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/goblint-regression/09-regions_19-nested_nr.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version c7c6ca5d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/goblint-regression/09-regions_19-nested_nr.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e4a3fff277216174585e9d802eee36c2b619da26d56e48ed5261f2ab62942b7a --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-09 15:03:28,011 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 15:03:28,074 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-09 15:03:28,078 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 15:03:28,078 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 15:03:28,102 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 15:03:28,103 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 15:03:28,105 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 15:03:28,105 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 15:03:28,106 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 15:03:28,106 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 15:03:28,106 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 15:03:28,107 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 15:03:28,110 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 15:03:28,110 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 15:03:28,110 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 15:03:28,111 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 15:03:28,111 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 15:03:28,111 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 15:03:28,111 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 15:03:28,112 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 15:03:28,115 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 15:03:28,116 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 15:03:28,116 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 15:03:28,116 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 15:03:28,117 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-09 15:03:28,117 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 15:03:28,117 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 15:03:28,117 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 15:03:28,118 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 15:03:28,118 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 15:03:28,118 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 15:03:28,118 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 15:03:28,119 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 15:03:28,119 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 15:03:28,120 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 15:03:28,120 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 15:03:28,120 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 15:03:28,121 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 15:03:28,121 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 15:03:28,121 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 15:03:28,122 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 15:03:28,122 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 15:03:28,122 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 15:03:28,122 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e4a3fff277216174585e9d802eee36c2b619da26d56e48ed5261f2ab62942b7a [2024-11-09 15:03:28,410 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 15:03:28,438 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 15:03:28,442 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 15:03:28,443 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 15:03:28,443 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 15:03:28,445 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/09-regions_19-nested_nr.i [2024-11-09 15:03:29,873 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 15:03:30,141 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 15:03:30,142 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/09-regions_19-nested_nr.i [2024-11-09 15:03:30,160 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03c05b74c/c613e556230840dc954e2eee16126858/FLAG7eb1598ac [2024-11-09 15:03:30,447 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03c05b74c/c613e556230840dc954e2eee16126858 [2024-11-09 15:03:30,449 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 15:03:30,451 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 15:03:30,452 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 15:03:30,452 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 15:03:30,457 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 15:03:30,458 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 03:03:30" (1/1) ... [2024-11-09 15:03:30,459 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@552dbaa3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:03:30, skipping insertion in model container [2024-11-09 15:03:30,459 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 03:03:30" (1/1) ... [2024-11-09 15:03:30,507 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 15:03:31,004 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 15:03:31,045 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 15:03:31,086 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 15:03:31,177 INFO L204 MainTranslator]: Completed translation [2024-11-09 15:03:31,178 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:03:31 WrapperNode [2024-11-09 15:03:31,178 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 15:03:31,179 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 15:03:31,179 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 15:03:31,180 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 15:03:31,186 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:03:31" (1/1) ... [2024-11-09 15:03:31,215 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:03:31" (1/1) ... [2024-11-09 15:03:31,257 INFO L138 Inliner]: procedures = 372, calls = 87, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 190 [2024-11-09 15:03:31,257 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 15:03:31,258 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 15:03:31,258 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 15:03:31,258 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 15:03:31,269 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:03:31" (1/1) ... [2024-11-09 15:03:31,270 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:03:31" (1/1) ... [2024-11-09 15:03:31,280 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:03:31" (1/1) ... [2024-11-09 15:03:31,320 INFO L175 MemorySlicer]: Split 78 memory accesses to 2 slices as follows [64, 14]. 82 percent of accesses are in the largest equivalence class. The 60 initializations are split as follows [60, 0]. The 11 writes are split as follows [1, 10]. [2024-11-09 15:03:31,321 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:03:31" (1/1) ... [2024-11-09 15:03:31,321 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:03:31" (1/1) ... [2024-11-09 15:03:31,335 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:03:31" (1/1) ... [2024-11-09 15:03:31,342 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:03:31" (1/1) ... [2024-11-09 15:03:31,345 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:03:31" (1/1) ... [2024-11-09 15:03:31,347 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:03:31" (1/1) ... [2024-11-09 15:03:31,350 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 15:03:31,352 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 15:03:31,352 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 15:03:31,352 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 15:03:31,353 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:03:31" (1/1) ... [2024-11-09 15:03:31,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 15:03:31,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:03:31,390 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-09 15:03:31,397 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-09 15:03:31,473 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-09 15:03:31,473 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-09 15:03:31,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-09 15:03:31,474 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-09 15:03:31,474 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-09 15:03:31,474 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 15:03:31,474 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-09 15:03:31,474 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 15:03:31,474 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-09 15:03:31,474 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-09 15:03:31,474 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 15:03:31,475 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 15:03:31,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-09 15:03:31,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-09 15:03:31,475 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-09 15:03:31,475 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-09 15:03:31,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 15:03:31,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 15:03:31,481 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 15:03:31,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 15:03:31,482 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-09 15:03:31,700 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 15:03:31,702 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 15:03:32,097 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 15:03:32,098 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 15:03:32,623 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 15:03:32,623 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-09 15:03:32,624 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 03:03:32 BoogieIcfgContainer [2024-11-09 15:03:32,624 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 15:03:32,626 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 15:03:32,626 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 15:03:32,629 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 15:03:32,629 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 03:03:30" (1/3) ... [2024-11-09 15:03:32,630 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19aed205 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 03:03:32, skipping insertion in model container [2024-11-09 15:03:32,630 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:03:31" (2/3) ... [2024-11-09 15:03:32,631 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19aed205 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 03:03:32, skipping insertion in model container [2024-11-09 15:03:32,631 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 03:03:32" (3/3) ... [2024-11-09 15:03:32,632 INFO L112 eAbstractionObserver]: Analyzing ICFG 09-regions_19-nested_nr.i [2024-11-09 15:03:32,650 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 15:03:32,650 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-11-09 15:03:32,650 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 15:03:32,703 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-09 15:03:32,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 27 places, 25 transitions, 54 flow [2024-11-09 15:03:32,766 INFO L124 PetriNetUnfolderBase]: 2/24 cut-off events. [2024-11-09 15:03:32,767 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 15:03:32,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28 conditions, 24 events. 2/24 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 44 event pairs, 0 based on Foata normal form. 0/18 useless extension candidates. Maximal degree in co-relation 13. Up to 2 conditions per place. [2024-11-09 15:03:32,770 INFO L82 GeneralOperation]: Start removeDead. Operand has 27 places, 25 transitions, 54 flow [2024-11-09 15:03:32,773 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 11 places, 12 transitions, 24 flow [2024-11-09 15:03:32,786 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 15:03:32,793 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;@73479c95, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 15:03:32,794 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-09 15:03:32,800 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 15:03:32,801 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-09 15:03:32,801 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 15:03:32,801 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:03:32,802 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-09 15:03:32,803 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2024-11-09 15:03:32,807 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:03:32,807 INFO L85 PathProgramCache]: Analyzing trace with hash 501930, now seen corresponding path program 1 times [2024-11-09 15:03:32,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:03:32,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049248454] [2024-11-09 15:03:32,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:03:32,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:03:32,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:03:33,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:03:33,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:03:33,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049248454] [2024-11-09 15:03:33,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049248454] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:03:33,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:03:33,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 15:03:33,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514026046] [2024-11-09 15:03:33,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:03:33,180 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:03:33,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:03:33,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:03:33,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:03:33,217 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 25 [2024-11-09 15:03:33,219 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 11 places, 12 transitions, 24 flow. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 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) [2024-11-09 15:03:33,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:03:33,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 25 [2024-11-09 15:03:33,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:03:33,327 INFO L124 PetriNetUnfolderBase]: 2/15 cut-off events. [2024-11-09 15:03:33,327 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 15:03:33,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27 conditions, 15 events. 2/15 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 14 event pairs, 0 based on Foata normal form. 1/13 useless extension candidates. Maximal degree in co-relation 0. Up to 9 conditions per place. [2024-11-09 15:03:33,329 INFO L140 encePairwiseOnDemand]: 19/25 looper letters, 7 selfloop transitions, 3 changer transitions 0/14 dead transitions. [2024-11-09 15:03:33,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 14 places, 14 transitions, 48 flow [2024-11-09 15:03:33,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:03:33,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:03:33,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 33 transitions. [2024-11-09 15:03:33,340 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.33 [2024-11-09 15:03:33,341 INFO L175 Difference]: Start difference. First operand has 11 places, 12 transitions, 24 flow. Second operand 4 states and 33 transitions. [2024-11-09 15:03:33,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 14 places, 14 transitions, 48 flow [2024-11-09 15:03:33,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 14 places, 14 transitions, 48 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-09 15:03:33,345 INFO L231 Difference]: Finished difference. Result has 16 places, 14 transitions, 48 flow [2024-11-09 15:03:33,346 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=24, PETRI_DIFFERENCE_MINUEND_PLACES=11, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=48, PETRI_PLACES=16, PETRI_TRANSITIONS=14} [2024-11-09 15:03:33,349 INFO L277 CegarLoopForPetriNet]: 11 programPoint places, 5 predicate places. [2024-11-09 15:03:33,349 INFO L471 AbstractCegarLoop]: Abstraction has has 16 places, 14 transitions, 48 flow [2024-11-09 15:03:33,349 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 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) [2024-11-09 15:03:33,350 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:03:33,350 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-09 15:03:33,350 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 15:03:33,350 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2024-11-09 15:03:33,351 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:03:33,351 INFO L85 PathProgramCache]: Analyzing trace with hash 2068591867, now seen corresponding path program 1 times [2024-11-09 15:03:33,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:03:33,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097436312] [2024-11-09 15:03:33,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:03:33,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:03:33,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:03:33,492 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:03:33,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:03:33,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097436312] [2024-11-09 15:03:33,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097436312] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:03:33,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1508884204] [2024-11-09 15:03:33,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:03:33,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:03:33,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:03:33,495 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:03:33,497 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 15:03:33,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:03:33,605 INFO L255 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 15:03:33,609 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:03:33,667 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:03:33,667 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 15:03:33,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1508884204] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:03:33,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 15:03:33,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-09 15:03:33,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127294205] [2024-11-09 15:03:33,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:03:33,669 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 15:03:33,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:03:33,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 15:03:33,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-09 15:03:33,683 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 25 [2024-11-09 15:03:33,683 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 16 places, 14 transitions, 48 flow. Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 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) [2024-11-09 15:03:33,683 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:03:33,683 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 25 [2024-11-09 15:03:33,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:03:33,816 INFO L124 PetriNetUnfolderBase]: 2/14 cut-off events. [2024-11-09 15:03:33,816 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-09 15:03:33,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 14 events. 2/14 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 9 event pairs, 0 based on Foata normal form. 1/12 useless extension candidates. Maximal degree in co-relation 20. Up to 4 conditions per place. [2024-11-09 15:03:33,818 INFO L140 encePairwiseOnDemand]: 20/25 looper letters, 3 selfloop transitions, 6 changer transitions 0/13 dead transitions. [2024-11-09 15:03:33,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 13 transitions, 62 flow [2024-11-09 15:03:33,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 15:03:33,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 15:03:33,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 40 transitions. [2024-11-09 15:03:33,821 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.26666666666666666 [2024-11-09 15:03:33,821 INFO L175 Difference]: Start difference. First operand has 16 places, 14 transitions, 48 flow. Second operand 6 states and 40 transitions. [2024-11-09 15:03:33,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 13 transitions, 62 flow [2024-11-09 15:03:33,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 13 transitions, 60 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 15:03:33,824 INFO L231 Difference]: Finished difference. Result has 19 places, 13 transitions, 54 flow [2024-11-09 15:03:33,825 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=14, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=54, PETRI_PLACES=19, PETRI_TRANSITIONS=13} [2024-11-09 15:03:33,826 INFO L277 CegarLoopForPetriNet]: 11 programPoint places, 8 predicate places. [2024-11-09 15:03:33,827 INFO L471 AbstractCegarLoop]: Abstraction has has 19 places, 13 transitions, 54 flow [2024-11-09 15:03:33,827 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 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) [2024-11-09 15:03:33,827 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:03:33,827 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-09 15:03:33,848 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-09 15:03:34,028 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:03:34,029 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2024-11-09 15:03:34,030 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:03:34,030 INFO L85 PathProgramCache]: Analyzing trace with hash -298161062, now seen corresponding path program 1 times [2024-11-09 15:03:34,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:03:34,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237239943] [2024-11-09 15:03:34,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:03:34,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:03:34,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:03:34,106 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:03:34,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:03:34,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237239943] [2024-11-09 15:03:34,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237239943] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:03:34,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:03:34,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 15:03:34,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888087566] [2024-11-09 15:03:34,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:03:34,108 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 15:03:34,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:03:34,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 15:03:34,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 15:03:34,114 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 25 [2024-11-09 15:03:34,114 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 13 transitions, 54 flow. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:03:34,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:03:34,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 25 [2024-11-09 15:03:34,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:03:34,174 INFO L124 PetriNetUnfolderBase]: 2/13 cut-off events. [2024-11-09 15:03:34,174 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-09 15:03:34,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39 conditions, 13 events. 2/13 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 6 event pairs, 0 based on Foata normal form. 1/12 useless extension candidates. Maximal degree in co-relation 16. Up to 7 conditions per place. [2024-11-09 15:03:34,175 INFO L140 encePairwiseOnDemand]: 22/25 looper letters, 4 selfloop transitions, 4 changer transitions 0/12 dead transitions. [2024-11-09 15:03:34,176 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 12 transitions, 66 flow [2024-11-09 15:03:34,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 15:03:34,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 15:03:34,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 22 transitions. [2024-11-09 15:03:34,177 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.29333333333333333 [2024-11-09 15:03:34,177 INFO L175 Difference]: Start difference. First operand has 19 places, 13 transitions, 54 flow. Second operand 3 states and 22 transitions. [2024-11-09 15:03:34,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 12 transitions, 66 flow [2024-11-09 15:03:34,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 14 places, 12 transitions, 44 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-11-09 15:03:34,179 INFO L231 Difference]: Finished difference. Result has 14 places, 12 transitions, 36 flow [2024-11-09 15:03:34,179 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=12, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=36, PETRI_PLACES=14, PETRI_TRANSITIONS=12} [2024-11-09 15:03:34,180 INFO L277 CegarLoopForPetriNet]: 11 programPoint places, 3 predicate places. [2024-11-09 15:03:34,180 INFO L471 AbstractCegarLoop]: Abstraction has has 14 places, 12 transitions, 36 flow [2024-11-09 15:03:34,181 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:03:34,181 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:03:34,181 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:03:34,181 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 15:03:34,182 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2024-11-09 15:03:34,182 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:03:34,182 INFO L85 PathProgramCache]: Analyzing trace with hash -298160043, now seen corresponding path program 1 times [2024-11-09 15:03:34,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:03:34,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592108627] [2024-11-09 15:03:34,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:03:34,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:03:34,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:03:34,351 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:03:34,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:03:34,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592108627] [2024-11-09 15:03:34,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592108627] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:03:34,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1778927531] [2024-11-09 15:03:34,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:03:34,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:03:34,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:03:34,355 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:03:34,358 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 15:03:34,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:03:34,501 INFO L255 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 15:03:34,502 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:03:34,523 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:03:34,523 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:03:34,555 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:03:34,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1778927531] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:03:34,555 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:03:34,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-11-09 15:03:34,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404503226] [2024-11-09 15:03:34,556 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:03:34,556 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 15:03:34,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:03:34,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 15:03:34,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-09 15:03:34,571 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 25 [2024-11-09 15:03:34,571 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 14 places, 12 transitions, 36 flow. Second operand has 10 states, 10 states have (on average 6.2) internal successors, (62), 10 states have internal predecessors, (62), 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) [2024-11-09 15:03:34,572 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:03:34,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 25 [2024-11-09 15:03:34,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:03:34,718 INFO L124 PetriNetUnfolderBase]: 2/17 cut-off events. [2024-11-09 15:03:34,718 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2024-11-09 15:03:34,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42 conditions, 17 events. 2/17 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 3 event pairs, 0 based on Foata normal form. 2/18 useless extension candidates. Maximal degree in co-relation 9. Up to 5 conditions per place. [2024-11-09 15:03:34,718 INFO L140 encePairwiseOnDemand]: 21/25 looper letters, 4 selfloop transitions, 7 changer transitions 0/15 dead transitions. [2024-11-09 15:03:34,719 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 15 transitions, 73 flow [2024-11-09 15:03:34,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 15:03:34,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-09 15:03:34,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 48 transitions. [2024-11-09 15:03:34,721 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2742857142857143 [2024-11-09 15:03:34,721 INFO L175 Difference]: Start difference. First operand has 14 places, 12 transitions, 36 flow. Second operand 7 states and 48 transitions. [2024-11-09 15:03:34,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 15 transitions, 73 flow [2024-11-09 15:03:34,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 15 transitions, 59 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 15:03:34,723 INFO L231 Difference]: Finished difference. Result has 20 places, 15 transitions, 62 flow [2024-11-09 15:03:34,723 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=12, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=62, PETRI_PLACES=20, PETRI_TRANSITIONS=15} [2024-11-09 15:03:34,723 INFO L277 CegarLoopForPetriNet]: 11 programPoint places, 9 predicate places. [2024-11-09 15:03:34,724 INFO L471 AbstractCegarLoop]: Abstraction has has 20 places, 15 transitions, 62 flow [2024-11-09 15:03:34,724 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.2) internal successors, (62), 10 states have internal predecessors, (62), 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) [2024-11-09 15:03:34,724 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:03:34,724 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1] [2024-11-09 15:03:34,741 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-09 15:03:34,928 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-09 15:03:34,929 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2024-11-09 15:03:34,929 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:03:34,929 INFO L85 PathProgramCache]: Analyzing trace with hash -204238155, now seen corresponding path program 2 times [2024-11-09 15:03:34,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:03:34,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236707900] [2024-11-09 15:03:34,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:03:34,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:03:34,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:03:35,060 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 15:03:35,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:03:35,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236707900] [2024-11-09 15:03:35,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236707900] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:03:35,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:03:35,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 15:03:35,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671037068] [2024-11-09 15:03:35,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:03:35,061 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:03:35,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:03:35,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:03:35,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:03:35,073 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 25 [2024-11-09 15:03:35,074 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 15 transitions, 62 flow. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 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) [2024-11-09 15:03:35,074 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:03:35,074 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 25 [2024-11-09 15:03:35,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:03:35,169 INFO L124 PetriNetUnfolderBase]: 2/20 cut-off events. [2024-11-09 15:03:35,169 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2024-11-09 15:03:35,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56 conditions, 20 events. 2/20 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 4 event pairs, 0 based on Foata normal form. 1/20 useless extension candidates. Maximal degree in co-relation 18. Up to 14 conditions per place. [2024-11-09 15:03:35,170 INFO L140 encePairwiseOnDemand]: 20/25 looper letters, 12 selfloop transitions, 3 changer transitions 0/17 dead transitions. [2024-11-09 15:03:35,170 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 17 transitions, 96 flow [2024-11-09 15:03:35,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:03:35,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:03:35,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 32 transitions. [2024-11-09 15:03:35,173 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.32 [2024-11-09 15:03:35,173 INFO L175 Difference]: Start difference. First operand has 20 places, 15 transitions, 62 flow. Second operand 4 states and 32 transitions. [2024-11-09 15:03:35,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 17 transitions, 96 flow [2024-11-09 15:03:35,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 17 transitions, 92 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 15:03:35,174 INFO L231 Difference]: Finished difference. Result has 23 places, 17 transitions, 80 flow [2024-11-09 15:03:35,174 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=80, PETRI_PLACES=23, PETRI_TRANSITIONS=17} [2024-11-09 15:03:35,175 INFO L277 CegarLoopForPetriNet]: 11 programPoint places, 12 predicate places. [2024-11-09 15:03:35,175 INFO L471 AbstractCegarLoop]: Abstraction has has 23 places, 17 transitions, 80 flow [2024-11-09 15:03:35,175 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 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) [2024-11-09 15:03:35,175 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:03:35,175 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1] [2024-11-09 15:03:35,175 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 15:03:35,176 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2024-11-09 15:03:35,176 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:03:35,176 INFO L85 PathProgramCache]: Analyzing trace with hash 1510282424, now seen corresponding path program 1 times [2024-11-09 15:03:35,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:03:35,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571245350] [2024-11-09 15:03:35,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:03:35,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:03:35,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:03:35,405 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 15:03:35,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:03:35,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571245350] [2024-11-09 15:03:35,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571245350] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:03:35,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1445702506] [2024-11-09 15:03:35,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:03:35,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:03:35,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:03:35,409 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:03:35,411 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 15:03:35,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:03:35,617 INFO L255 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 15:03:35,619 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:03:35,664 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 15:03:35,665 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:03:35,778 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 15:03:35,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1445702506] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:03:35,779 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:03:35,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2024-11-09 15:03:35,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739783473] [2024-11-09 15:03:35,780 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:03:35,780 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-09 15:03:35,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:03:35,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-09 15:03:35,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2024-11-09 15:03:35,800 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 25 [2024-11-09 15:03:35,801 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 17 transitions, 80 flow. Second operand has 18 states, 18 states have (on average 6.166666666666667) internal successors, (111), 18 states have internal predecessors, (111), 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) [2024-11-09 15:03:35,801 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:03:35,801 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 25 [2024-11-09 15:03:35,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:03:36,077 INFO L124 PetriNetUnfolderBase]: 2/32 cut-off events. [2024-11-09 15:03:36,077 INFO L125 PetriNetUnfolderBase]: For 41/41 co-relation queries the response was YES. [2024-11-09 15:03:36,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100 conditions, 32 events. 2/32 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 4 event pairs, 0 based on Foata normal form. 4/36 useless extension candidates. Maximal degree in co-relation 72. Up to 8 conditions per place. [2024-11-09 15:03:36,078 INFO L140 encePairwiseOnDemand]: 21/25 looper letters, 6 selfloop transitions, 15 changer transitions 0/25 dead transitions. [2024-11-09 15:03:36,078 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 25 transitions, 170 flow [2024-11-09 15:03:36,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-09 15:03:36,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-09 15:03:36,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 98 transitions. [2024-11-09 15:03:36,080 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2613333333333333 [2024-11-09 15:03:36,080 INFO L175 Difference]: Start difference. First operand has 23 places, 17 transitions, 80 flow. Second operand 15 states and 98 transitions. [2024-11-09 15:03:36,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 25 transitions, 170 flow [2024-11-09 15:03:36,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 25 transitions, 168 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 15:03:36,083 INFO L231 Difference]: Finished difference. Result has 40 places, 25 transitions, 175 flow [2024-11-09 15:03:36,083 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=175, PETRI_PLACES=40, PETRI_TRANSITIONS=25} [2024-11-09 15:03:36,083 INFO L277 CegarLoopForPetriNet]: 11 programPoint places, 29 predicate places. [2024-11-09 15:03:36,084 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 25 transitions, 175 flow [2024-11-09 15:03:36,084 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.166666666666667) internal successors, (111), 18 states have internal predecessors, (111), 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) [2024-11-09 15:03:36,084 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:03:36,084 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 2, 1, 1, 1, 1, 1] [2024-11-09 15:03:36,102 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 15:03:36,285 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:03:36,285 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2024-11-09 15:03:36,286 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:03:36,286 INFO L85 PathProgramCache]: Analyzing trace with hash -661753864, now seen corresponding path program 2 times [2024-11-09 15:03:36,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:03:36,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437004154] [2024-11-09 15:03:36,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:03:36,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:03:36,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:03:36,739 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 15:03:36,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:03:36,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437004154] [2024-11-09 15:03:36,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437004154] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:03:36,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [458440894] [2024-11-09 15:03:36,740 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 15:03:36,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:03:36,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:03:36,742 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:03:36,742 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 15:03:36,955 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 15:03:36,955 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 15:03:36,958 INFO L255 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-09 15:03:36,960 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:03:37,039 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 15:03:37,039 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:03:37,247 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 15:03:37,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [458440894] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:03:37,248 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:03:37,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 22 [2024-11-09 15:03:37,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534226677] [2024-11-09 15:03:37,249 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:03:37,249 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-09 15:03:37,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:03:37,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-09 15:03:37,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2024-11-09 15:03:37,277 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 25 [2024-11-09 15:03:37,277 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 25 transitions, 175 flow. Second operand has 23 states, 23 states have (on average 6.173913043478261) internal successors, (142), 23 states have internal predecessors, (142), 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) [2024-11-09 15:03:37,277 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:03:37,278 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 25 [2024-11-09 15:03:37,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:03:37,493 INFO L124 PetriNetUnfolderBase]: 2/41 cut-off events. [2024-11-09 15:03:37,494 INFO L125 PetriNetUnfolderBase]: For 122/122 co-relation queries the response was YES. [2024-11-09 15:03:37,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 163 conditions, 41 events. 2/41 cut-off events. For 122/122 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 4 event pairs, 0 based on Foata normal form. 3/44 useless extension candidates. Maximal degree in co-relation 132. Up to 11 conditions per place. [2024-11-09 15:03:37,495 INFO L140 encePairwiseOnDemand]: 21/25 looper letters, 6 selfloop transitions, 21 changer transitions 0/31 dead transitions. [2024-11-09 15:03:37,495 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 31 transitions, 283 flow [2024-11-09 15:03:37,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-09 15:03:37,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-09 15:03:37,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 133 transitions. [2024-11-09 15:03:37,499 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.25333333333333335 [2024-11-09 15:03:37,499 INFO L175 Difference]: Start difference. First operand has 40 places, 25 transitions, 175 flow. Second operand 21 states and 133 transitions. [2024-11-09 15:03:37,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 31 transitions, 283 flow [2024-11-09 15:03:37,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 31 transitions, 273 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-11-09 15:03:37,505 INFO L231 Difference]: Finished difference. Result has 59 places, 31 transitions, 276 flow [2024-11-09 15:03:37,505 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=276, PETRI_PLACES=59, PETRI_TRANSITIONS=31} [2024-11-09 15:03:37,506 INFO L277 CegarLoopForPetriNet]: 11 programPoint places, 48 predicate places. [2024-11-09 15:03:37,506 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 31 transitions, 276 flow [2024-11-09 15:03:37,506 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 6.173913043478261) internal successors, (142), 23 states have internal predecessors, (142), 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) [2024-11-09 15:03:37,506 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:03:37,506 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 2, 1, 1, 1, 1, 1] [2024-11-09 15:03:37,520 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 15:03:37,707 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:03:37,707 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2024-11-09 15:03:37,707 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:03:37,707 INFO L85 PathProgramCache]: Analyzing trace with hash 1207087911, now seen corresponding path program 3 times [2024-11-09 15:03:37,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:03:37,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264737863] [2024-11-09 15:03:37,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:03:37,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:03:37,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:03:37,907 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-09 15:03:37,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:03:37,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264737863] [2024-11-09 15:03:37,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264737863] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:03:37,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [719035180] [2024-11-09 15:03:37,909 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 15:03:37,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:03:37,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:03:37,911 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:03:37,914 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 15:03:38,151 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-09 15:03:38,152 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 15:03:38,154 INFO L255 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 15:03:38,156 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:03:38,186 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-09 15:03:38,187 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 15:03:38,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [719035180] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:03:38,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 15:03:38,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-11-09 15:03:38,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106969676] [2024-11-09 15:03:38,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:03:38,189 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 15:03:38,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:03:38,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 15:03:38,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-09 15:03:38,195 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2024-11-09 15:03:38,196 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 31 transitions, 276 flow. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:03:38,196 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:03:38,196 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2024-11-09 15:03:38,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:03:38,255 INFO L124 PetriNetUnfolderBase]: 2/40 cut-off events. [2024-11-09 15:03:38,255 INFO L125 PetriNetUnfolderBase]: For 152/152 co-relation queries the response was YES. [2024-11-09 15:03:38,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 191 conditions, 40 events. 2/40 cut-off events. For 152/152 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 2 event pairs, 0 based on Foata normal form. 1/40 useless extension candidates. Maximal degree in co-relation 155. Up to 23 conditions per place. [2024-11-09 15:03:38,258 INFO L140 encePairwiseOnDemand]: 21/25 looper letters, 24 selfloop transitions, 5 changer transitions 0/30 dead transitions. [2024-11-09 15:03:38,258 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 30 transitions, 330 flow [2024-11-09 15:03:38,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:03:38,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:03:38,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 25 transitions. [2024-11-09 15:03:38,259 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.25 [2024-11-09 15:03:38,259 INFO L175 Difference]: Start difference. First operand has 59 places, 31 transitions, 276 flow. Second operand 4 states and 25 transitions. [2024-11-09 15:03:38,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 30 transitions, 330 flow [2024-11-09 15:03:38,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 30 transitions, 287 flow, removed 1 selfloop flow, removed 13 redundant places. [2024-11-09 15:03:38,267 INFO L231 Difference]: Finished difference. Result has 48 places, 30 transitions, 239 flow [2024-11-09 15:03:38,268 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=239, PETRI_PLACES=48, PETRI_TRANSITIONS=30} [2024-11-09 15:03:38,269 INFO L277 CegarLoopForPetriNet]: 11 programPoint places, 37 predicate places. [2024-11-09 15:03:38,270 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 30 transitions, 239 flow [2024-11-09 15:03:38,270 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:03:38,270 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:03:38,270 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 2, 2, 1, 1, 1, 1] [2024-11-09 15:03:38,289 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-09 15:03:38,474 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:03:38,475 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2024-11-09 15:03:38,476 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:03:38,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1234979920, now seen corresponding path program 1 times [2024-11-09 15:03:38,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:03:38,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605382148] [2024-11-09 15:03:38,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:03:38,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:03:38,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:03:38,578 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2024-11-09 15:03:38,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:03:38,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605382148] [2024-11-09 15:03:38,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605382148] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:03:38,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:03:38,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 15:03:38,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792835656] [2024-11-09 15:03:38,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:03:38,579 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 15:03:38,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:03:38,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 15:03:38,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 15:03:38,590 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 25 [2024-11-09 15:03:38,591 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 30 transitions, 239 flow. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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) [2024-11-09 15:03:38,591 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:03:38,591 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 25 [2024-11-09 15:03:38,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:03:38,638 INFO L124 PetriNetUnfolderBase]: 2/39 cut-off events. [2024-11-09 15:03:38,639 INFO L125 PetriNetUnfolderBase]: For 139/139 co-relation queries the response was YES. [2024-11-09 15:03:38,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 170 conditions, 39 events. 2/39 cut-off events. For 139/139 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 2 event pairs, 0 based on Foata normal form. 1/40 useless extension candidates. Maximal degree in co-relation 135. Up to 26 conditions per place. [2024-11-09 15:03:38,639 INFO L140 encePairwiseOnDemand]: 22/25 looper letters, 0 selfloop transitions, 0 changer transitions 29/29 dead transitions. [2024-11-09 15:03:38,639 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 29 transitions, 289 flow [2024-11-09 15:03:38,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 15:03:38,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 15:03:38,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 22 transitions. [2024-11-09 15:03:38,640 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.29333333333333333 [2024-11-09 15:03:38,640 INFO L175 Difference]: Start difference. First operand has 48 places, 30 transitions, 239 flow. Second operand 3 states and 22 transitions. [2024-11-09 15:03:38,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 29 transitions, 289 flow [2024-11-09 15:03:38,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 29 transitions, 279 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-09 15:03:38,643 INFO L231 Difference]: Finished difference. Result has 46 places, 0 transitions, 0 flow [2024-11-09 15:03:38,643 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=225, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=46, PETRI_TRANSITIONS=0} [2024-11-09 15:03:38,644 INFO L277 CegarLoopForPetriNet]: 11 programPoint places, 35 predicate places. [2024-11-09 15:03:38,644 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 0 transitions, 0 flow [2024-11-09 15:03:38,644 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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) [2024-11-09 15:03:38,647 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 5 remaining) [2024-11-09 15:03:38,647 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 5 remaining) [2024-11-09 15:03:38,647 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 5 remaining) [2024-11-09 15:03:38,648 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 5 remaining) [2024-11-09 15:03:38,648 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2024-11-09 15:03:38,648 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-09 15:03:38,648 INFO L407 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1, 1] [2024-11-09 15:03:38,651 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-09 15:03:38,651 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-09 15:03:38,656 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 03:03:38 BasicIcfg [2024-11-09 15:03:38,656 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-09 15:03:38,656 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-09 15:03:38,656 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-09 15:03:38,656 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-09 15:03:38,657 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 03:03:32" (3/4) ... [2024-11-09 15:03:38,659 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-09 15:03:38,662 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2024-11-09 15:03:38,667 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 132 nodes and edges [2024-11-09 15:03:38,668 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2024-11-09 15:03:38,668 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-11-09 15:03:38,668 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-09 15:03:38,773 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-09 15:03:38,773 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-09 15:03:38,773 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-09 15:03:38,774 INFO L158 Benchmark]: Toolchain (without parser) took 8323.47ms. Allocated memory was 155.2MB in the beginning and 239.1MB in the end (delta: 83.9MB). Free memory was 119.7MB in the beginning and 198.1MB in the end (delta: -78.4MB). Peak memory consumption was 142.3MB. Max. memory is 16.1GB. [2024-11-09 15:03:38,774 INFO L158 Benchmark]: CDTParser took 1.02ms. Allocated memory is still 155.2MB. Free memory is still 125.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 15:03:38,774 INFO L158 Benchmark]: CACSL2BoogieTranslator took 726.97ms. Allocated memory is still 155.2MB. Free memory was 119.7MB in the beginning and 75.2MB in the end (delta: 44.5MB). Peak memory consumption was 44.0MB. Max. memory is 16.1GB. [2024-11-09 15:03:38,775 INFO L158 Benchmark]: Boogie Procedure Inliner took 78.27ms. Allocated memory is still 155.2MB. Free memory was 75.2MB in the beginning and 71.6MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-09 15:03:38,775 INFO L158 Benchmark]: Boogie Preprocessor took 92.35ms. Allocated memory is still 155.2MB. Free memory was 71.6MB in the beginning and 122.6MB in the end (delta: -51.0MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-11-09 15:03:38,775 INFO L158 Benchmark]: RCFGBuilder took 1272.07ms. Allocated memory was 155.2MB in the beginning and 186.6MB in the end (delta: 31.5MB). Free memory was 122.6MB in the beginning and 109.7MB in the end (delta: 12.9MB). Peak memory consumption was 100.7MB. Max. memory is 16.1GB. [2024-11-09 15:03:38,775 INFO L158 Benchmark]: TraceAbstraction took 6029.80ms. Allocated memory was 186.6MB in the beginning and 239.1MB in the end (delta: 52.4MB). Free memory was 109.7MB in the beginning and 68.1MB in the end (delta: 41.6MB). Peak memory consumption was 97.2MB. Max. memory is 16.1GB. [2024-11-09 15:03:38,776 INFO L158 Benchmark]: Witness Printer took 117.18ms. Allocated memory is still 239.1MB. Free memory was 67.1MB in the beginning and 198.1MB in the end (delta: -131.0MB). Peak memory consumption was 6.4MB. Max. memory is 16.1GB. [2024-11-09 15:03:38,778 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.02ms. Allocated memory is still 155.2MB. Free memory is still 125.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 726.97ms. Allocated memory is still 155.2MB. Free memory was 119.7MB in the beginning and 75.2MB in the end (delta: 44.5MB). Peak memory consumption was 44.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 78.27ms. Allocated memory is still 155.2MB. Free memory was 75.2MB in the beginning and 71.6MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 92.35ms. Allocated memory is still 155.2MB. Free memory was 71.6MB in the beginning and 122.6MB in the end (delta: -51.0MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * RCFGBuilder took 1272.07ms. Allocated memory was 155.2MB in the beginning and 186.6MB in the end (delta: 31.5MB). Free memory was 122.6MB in the beginning and 109.7MB in the end (delta: 12.9MB). Peak memory consumption was 100.7MB. Max. memory is 16.1GB. * TraceAbstraction took 6029.80ms. Allocated memory was 186.6MB in the beginning and 239.1MB in the end (delta: 52.4MB). Free memory was 109.7MB in the beginning and 68.1MB in the end (delta: 41.6MB). Peak memory consumption was 97.2MB. Max. memory is 16.1GB. * Witness Printer took 117.18ms. Allocated memory is still 239.1MB. Free memory was 67.1MB in the beginning and 198.1MB in the end (delta: -131.0MB). Peak memory consumption was 6.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 1256]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 1256]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 1262]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 1262]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 31 locations, 5 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: 9, TraceHistogramMax: 10, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 129 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 101 mSDsluCounter, 69 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 62 mSDsCounter, 20 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 345 IncrementalHoareTripleChecker+Invalid, 365 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 20 mSolverCounterUnsat, 7 mSDtfsCounter, 345 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 206 GetRequests, 109 SyntacticMatches, 11 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 485 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=276occurred in iteration=7, InterpolantAutomatonStates: 67, 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, 0.5s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 249 NumberOfCodeBlocks, 222 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 283 ConstructedInterpolants, 0 QuantifiedInterpolants, 557 SizeOfPredicates, 14 NumberOfNonLiveVariables, 1659 ConjunctsInSsa, 37 ConjunctsInUnsatCore, 17 InterpolantComputations, 6 PerfectInterpolantSequences, 469/722 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 - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-09 15:03:38,809 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE