./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_24-sound_lock_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_24-sound_lock_racing.i -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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 1eea0d699fc30cae440905f5eeea19b8e9e5d0b5cc249e9ffded8d356549b279 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 23:58:16,332 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 23:58:16,390 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-11 23:58:16,395 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 23:58:16,395 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 23:58:16,422 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 23:58:16,423 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 23:58:16,424 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 23:58:16,424 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 23:58:16,425 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 23:58:16,425 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 23:58:16,425 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 23:58:16,426 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 23:58:16,427 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 23:58:16,428 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 23:58:16,429 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 23:58:16,429 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-11 23:58:16,429 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 23:58:16,429 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 23:58:16,430 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 23:58:16,430 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 23:58:16,433 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-11 23:58:16,433 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 23:58:16,433 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-11 23:58:16,434 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 23:58:16,434 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-11 23:58:16,434 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 23:58:16,434 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 23:58:16,434 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-11 23:58:16,435 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 23:58:16,435 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 23:58:16,435 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 23:58:16,435 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 23:58:16,435 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 23:58:16,435 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 23:58:16,436 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 23:58:16,436 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 23:58:16,436 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-11 23:58:16,436 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 23:58:16,436 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 23:58:16,436 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 23:58:16,437 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 23:58:16,437 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 23:58:16,438 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 23:58:16,438 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1eea0d699fc30cae440905f5eeea19b8e9e5d0b5cc249e9ffded8d356549b279 [2024-10-11 23:58:16,643 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 23:58:16,665 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 23:58:16,668 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 23:58:16,670 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 23:58:16,670 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 23:58:16,671 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_24-sound_lock_racing.i [2024-10-11 23:58:18,126 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 23:58:18,343 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 23:58:18,344 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_24-sound_lock_racing.i [2024-10-11 23:58:18,358 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/a1e6f9752/7ba6648d761a432ea6227306a3d80bf4/FLAG4925006be [2024-10-11 23:58:18,708 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/a1e6f9752/7ba6648d761a432ea6227306a3d80bf4 [2024-10-11 23:58:18,710 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 23:58:18,711 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 23:58:18,713 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 23:58:18,713 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 23:58:18,718 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 23:58:18,719 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 11:58:18" (1/1) ... [2024-10-11 23:58:18,720 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bfe68b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:58:18, skipping insertion in model container [2024-10-11 23:58:18,720 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 11:58:18" (1/1) ... [2024-10-11 23:58:18,767 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 23:58:19,099 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 23:58:19,110 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 23:58:19,189 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 23:58:19,262 INFO L204 MainTranslator]: Completed translation [2024-10-11 23:58:19,263 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:58:19 WrapperNode [2024-10-11 23:58:19,263 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 23:58:19,264 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 23:58:19,264 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 23:58:19,264 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 23:58:19,270 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:58:19" (1/1) ... [2024-10-11 23:58:19,283 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:58:19" (1/1) ... [2024-10-11 23:58:19,310 INFO L138 Inliner]: procedures = 171, calls = 42, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 96 [2024-10-11 23:58:19,310 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 23:58:19,311 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 23:58:19,311 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 23:58:19,311 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 23:58:19,318 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:58:19" (1/1) ... [2024-10-11 23:58:19,318 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:58:19" (1/1) ... [2024-10-11 23:58:19,322 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:58:19" (1/1) ... [2024-10-11 23:58:19,333 INFO L175 MemorySlicer]: Split 19 memory accesses to 4 slices as follows [2, 5, 10, 2]. 53 percent of accesses are in the largest equivalence class. The 17 initializations are split as follows [2, 5, 10, 0]. The 1 writes are split as follows [0, 0, 0, 1]. [2024-10-11 23:58:19,333 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:58:19" (1/1) ... [2024-10-11 23:58:19,334 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:58:19" (1/1) ... [2024-10-11 23:58:19,339 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:58:19" (1/1) ... [2024-10-11 23:58:19,341 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:58:19" (1/1) ... [2024-10-11 23:58:19,343 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:58:19" (1/1) ... [2024-10-11 23:58:19,343 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:58:19" (1/1) ... [2024-10-11 23:58:19,346 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 23:58:19,346 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 23:58:19,346 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 23:58:19,347 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 23:58:19,347 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:58:19" (1/1) ... [2024-10-11 23:58:19,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 23:58:19,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:58:19,382 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 23:58:19,385 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 23:58:19,425 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-11 23:58:19,425 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-11 23:58:19,426 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-11 23:58:19,426 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-10-11 23:58:19,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-11 23:58:19,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-11 23:58:19,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-11 23:58:19,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-10-11 23:58:19,426 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-11 23:58:19,426 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 23:58:19,426 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-11 23:58:19,427 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-10-11 23:58:19,427 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-10-11 23:58:19,427 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-11 23:58:19,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 23:58:19,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-11 23:58:19,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-11 23:58:19,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-11 23:58:19,427 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-11 23:58:19,427 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 23:58:19,428 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 23:58:19,429 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-11 23:58:19,546 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 23:58:19,548 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 23:58:19,810 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-11 23:58:19,810 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 23:58:19,986 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 23:58:19,986 INFO L314 CfgBuilder]: Removed 10 assume(true) statements. [2024-10-11 23:58:19,987 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 11:58:19 BoogieIcfgContainer [2024-10-11 23:58:19,988 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 23:58:19,990 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 23:58:19,990 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 23:58:19,993 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 23:58:19,994 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 11:58:18" (1/3) ... [2024-10-11 23:58:19,995 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d32cfdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 11:58:19, skipping insertion in model container [2024-10-11 23:58:19,995 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:58:19" (2/3) ... [2024-10-11 23:58:19,995 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d32cfdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 11:58:19, skipping insertion in model container [2024-10-11 23:58:19,995 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 11:58:19" (3/3) ... [2024-10-11 23:58:19,997 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_24-sound_lock_racing.i [2024-10-11 23:58:20,013 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 23:58:20,013 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2024-10-11 23:58:20,013 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-11 23:58:20,050 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-10-11 23:58:20,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 54 places, 60 transitions, 127 flow [2024-10-11 23:58:20,117 INFO L124 PetriNetUnfolderBase]: 11/75 cut-off events. [2024-10-11 23:58:20,117 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-11 23:58:20,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 75 events. 11/75 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 217 event pairs, 0 based on Foata normal form. 0/53 useless extension candidates. Maximal degree in co-relation 51. Up to 4 conditions per place. [2024-10-11 23:58:20,123 INFO L82 GeneralOperation]: Start removeDead. Operand has 54 places, 60 transitions, 127 flow [2024-10-11 23:58:20,126 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 54 places, 59 transitions, 125 flow [2024-10-11 23:58:20,138 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 23:58:20,144 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;@441a8744, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 23:58:20,145 INFO L334 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2024-10-11 23:58:20,152 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 23:58:20,152 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2024-10-11 23:58:20,153 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 23:58:20,153 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:58:20,153 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-10-11 23:58:20,153 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-10-11 23:58:20,157 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:58:20,157 INFO L85 PathProgramCache]: Analyzing trace with hash 349853884, now seen corresponding path program 1 times [2024-10-11 23:58:20,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:58:20,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516092203] [2024-10-11 23:58:20,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:58:20,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:58:20,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:58:20,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:58:20,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:58:20,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516092203] [2024-10-11 23:58:20,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516092203] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:58:20,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:58:20,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 23:58:20,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556388225] [2024-10-11 23:58:20,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:58:20,461 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 23:58:20,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:58:20,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 23:58:20,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 23:58:20,491 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 60 [2024-10-11 23:58:20,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 59 transitions, 125 flow. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 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) [2024-10-11 23:58:20,493 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:58:20,493 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 60 [2024-10-11 23:58:20,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:58:20,663 INFO L124 PetriNetUnfolderBase]: 132/361 cut-off events. [2024-10-11 23:58:20,664 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-11 23:58:20,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 658 conditions, 361 events. 132/361 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1719 event pairs, 20 based on Foata normal form. 76/410 useless extension candidates. Maximal degree in co-relation 630. Up to 255 conditions per place. [2024-10-11 23:58:20,670 INFO L140 encePairwiseOnDemand]: 46/60 looper letters, 46 selfloop transitions, 3 changer transitions 0/72 dead transitions. [2024-10-11 23:58:20,670 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 72 transitions, 249 flow [2024-10-11 23:58:20,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 23:58:20,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 23:58:20,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 164 transitions. [2024-10-11 23:58:20,681 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6833333333333333 [2024-10-11 23:58:20,682 INFO L175 Difference]: Start difference. First operand has 54 places, 59 transitions, 125 flow. Second operand 4 states and 164 transitions. [2024-10-11 23:58:20,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 72 transitions, 249 flow [2024-10-11 23:58:20,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 72 transitions, 249 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-11 23:58:20,687 INFO L231 Difference]: Finished difference. Result has 56 places, 49 transitions, 115 flow [2024-10-11 23:58:20,689 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=115, PETRI_PLACES=56, PETRI_TRANSITIONS=49} [2024-10-11 23:58:20,692 INFO L277 CegarLoopForPetriNet]: 54 programPoint places, 2 predicate places. [2024-10-11 23:58:20,693 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 49 transitions, 115 flow [2024-10-11 23:58:20,693 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 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) [2024-10-11 23:58:20,694 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:58:20,694 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-10-11 23:58:20,695 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 23:58:20,695 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-10-11 23:58:20,695 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:58:20,695 INFO L85 PathProgramCache]: Analyzing trace with hash -1388177240, now seen corresponding path program 1 times [2024-10-11 23:58:20,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:58:20,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237936172] [2024-10-11 23:58:20,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:58:20,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:58:20,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 23:58:20,712 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-11 23:58:20,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 23:58:20,747 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-11 23:58:20,749 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-11 23:58:20,750 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2024-10-11 23:58:20,751 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2024-10-11 23:58:20,751 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2024-10-11 23:58:20,751 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2024-10-11 23:58:20,752 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2024-10-11 23:58:20,752 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2024-10-11 23:58:20,752 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2024-10-11 23:58:20,753 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2024-10-11 23:58:20,753 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2024-10-11 23:58:20,753 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2024-10-11 23:58:20,753 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2024-10-11 23:58:20,753 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2024-10-11 23:58:20,754 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2024-10-11 23:58:20,754 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 23:58:20,754 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-10-11 23:58:20,756 WARN L239 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-11 23:58:20,757 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-10-11 23:58:20,778 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-11 23:58:20,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 82 places, 93 transitions, 202 flow [2024-10-11 23:58:20,803 INFO L124 PetriNetUnfolderBase]: 21/142 cut-off events. [2024-10-11 23:58:20,806 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-10-11 23:58:20,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154 conditions, 142 events. 21/142 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 504 event pairs, 0 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 91. Up to 6 conditions per place. [2024-10-11 23:58:20,808 INFO L82 GeneralOperation]: Start removeDead. Operand has 82 places, 93 transitions, 202 flow [2024-10-11 23:58:20,809 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 82 places, 93 transitions, 202 flow [2024-10-11 23:58:20,811 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 23:58:20,811 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;@441a8744, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 23:58:20,812 INFO L334 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2024-10-11 23:58:20,814 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 23:58:20,814 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2024-10-11 23:58:20,814 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 23:58:20,814 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:58:20,814 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-10-11 23:58:20,815 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-11 23:58:20,815 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:58:20,815 INFO L85 PathProgramCache]: Analyzing trace with hash 438634040, now seen corresponding path program 1 times [2024-10-11 23:58:20,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:58:20,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904983287] [2024-10-11 23:58:20,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:58:20,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:58:20,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:58:20,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:58:20,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:58:20,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904983287] [2024-10-11 23:58:20,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904983287] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:58:20,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:58:20,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 23:58:20,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460516652] [2024-10-11 23:58:20,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:58:20,893 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 23:58:20,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:58:20,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 23:58:20,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 23:58:20,904 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 93 [2024-10-11 23:58:20,904 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 93 transitions, 202 flow. Second operand has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 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) [2024-10-11 23:58:20,904 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:58:20,904 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 93 [2024-10-11 23:58:20,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:58:21,690 INFO L124 PetriNetUnfolderBase]: 4028/8614 cut-off events. [2024-10-11 23:58:21,691 INFO L125 PetriNetUnfolderBase]: For 84/84 co-relation queries the response was YES. [2024-10-11 23:58:21,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15092 conditions, 8614 events. 4028/8614 cut-off events. For 84/84 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 72019 event pairs, 1892 based on Foata normal form. 1643/9359 useless extension candidates. Maximal degree in co-relation 1207. Up to 6374 conditions per place. [2024-10-11 23:58:21,729 INFO L140 encePairwiseOnDemand]: 73/93 looper letters, 64 selfloop transitions, 3 changer transitions 0/104 dead transitions. [2024-10-11 23:58:21,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 104 transitions, 358 flow [2024-10-11 23:58:21,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 23:58:21,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 23:58:21,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 244 transitions. [2024-10-11 23:58:21,732 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6559139784946236 [2024-10-11 23:58:21,733 INFO L175 Difference]: Start difference. First operand has 82 places, 93 transitions, 202 flow. Second operand 4 states and 244 transitions. [2024-10-11 23:58:21,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 104 transitions, 358 flow [2024-10-11 23:58:21,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 104 transitions, 358 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-11 23:58:21,737 INFO L231 Difference]: Finished difference. Result has 87 places, 81 transitions, 198 flow [2024-10-11 23:58:21,737 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=198, PETRI_PLACES=87, PETRI_TRANSITIONS=81} [2024-10-11 23:58:21,738 INFO L277 CegarLoopForPetriNet]: 82 programPoint places, 5 predicate places. [2024-10-11 23:58:21,738 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 81 transitions, 198 flow [2024-10-11 23:58:21,738 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 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) [2024-10-11 23:58:21,738 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:58:21,738 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2024-10-11 23:58:21,738 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-11 23:58:21,739 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-11 23:58:21,739 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:58:21,739 INFO L85 PathProgramCache]: Analyzing trace with hash 760991838, now seen corresponding path program 1 times [2024-10-11 23:58:21,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:58:21,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365776579] [2024-10-11 23:58:21,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:58:21,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:58:21,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:58:21,827 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:58:21,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:58:21,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365776579] [2024-10-11 23:58:21,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365776579] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 23:58:21,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [218967437] [2024-10-11 23:58:21,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:58:21,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:58:21,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:58:21,830 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 23:58:21,831 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-11 23:58:21,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:58:21,914 INFO L255 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-11 23:58:21,916 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 23:58:21,959 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:58:21,960 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 23:58:21,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [218967437] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:58:21,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 23:58:21,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-10-11 23:58:21,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114502524] [2024-10-11 23:58:21,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:58:21,961 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 23:58:21,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:58:21,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 23:58:21,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-11 23:58:21,968 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 93 [2024-10-11 23:58:21,968 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 81 transitions, 198 flow. Second operand has 6 states, 6 states have (on average 38.5) internal successors, (231), 6 states have internal predecessors, (231), 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) [2024-10-11 23:58:21,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:58:21,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 93 [2024-10-11 23:58:21,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:58:22,596 INFO L124 PetriNetUnfolderBase]: 3764/7352 cut-off events. [2024-10-11 23:58:22,597 INFO L125 PetriNetUnfolderBase]: For 624/624 co-relation queries the response was YES. [2024-10-11 23:58:22,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14062 conditions, 7352 events. 3764/7352 cut-off events. For 624/624 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 57965 event pairs, 252 based on Foata normal form. 144/7012 useless extension candidates. Maximal degree in co-relation 1168. Up to 4012 conditions per place. [2024-10-11 23:58:22,642 INFO L140 encePairwiseOnDemand]: 88/93 looper letters, 104 selfloop transitions, 6 changer transitions 0/147 dead transitions. [2024-10-11 23:58:22,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 147 transitions, 548 flow [2024-10-11 23:58:22,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 23:58:22,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 23:58:22,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 333 transitions. [2024-10-11 23:58:22,649 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5967741935483871 [2024-10-11 23:58:22,649 INFO L175 Difference]: Start difference. First operand has 87 places, 81 transitions, 198 flow. Second operand 6 states and 333 transitions. [2024-10-11 23:58:22,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 147 transitions, 548 flow [2024-10-11 23:58:22,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 147 transitions, 546 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 23:58:22,653 INFO L231 Difference]: Finished difference. Result has 90 places, 80 transitions, 204 flow [2024-10-11 23:58:22,657 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=204, PETRI_PLACES=90, PETRI_TRANSITIONS=80} [2024-10-11 23:58:22,658 INFO L277 CegarLoopForPetriNet]: 82 programPoint places, 8 predicate places. [2024-10-11 23:58:22,658 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 80 transitions, 204 flow [2024-10-11 23:58:22,658 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 38.5) internal successors, (231), 6 states have internal predecessors, (231), 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) [2024-10-11 23:58:22,658 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:58:22,658 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:58:22,682 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-11 23:58:22,859 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:58:22,860 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-11 23:58:22,860 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:58:22,860 INFO L85 PathProgramCache]: Analyzing trace with hash -2032975205, now seen corresponding path program 1 times [2024-10-11 23:58:22,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:58:22,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517391077] [2024-10-11 23:58:22,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:58:22,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:58:22,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:58:22,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:58:22,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:58:22,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517391077] [2024-10-11 23:58:22,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517391077] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:58:22,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:58:22,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 23:58:22,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908501783] [2024-10-11 23:58:22,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:58:22,903 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 23:58:22,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:58:22,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 23:58:22,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 23:58:22,908 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 93 [2024-10-11 23:58:22,908 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 80 transitions, 204 flow. Second operand has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 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) [2024-10-11 23:58:22,908 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:58:22,909 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 93 [2024-10-11 23:58:22,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:58:24,059 INFO L124 PetriNetUnfolderBase]: 5385/11251 cut-off events. [2024-10-11 23:58:24,060 INFO L125 PetriNetUnfolderBase]: For 1173/1334 co-relation queries the response was YES. [2024-10-11 23:58:24,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20759 conditions, 11251 events. 5385/11251 cut-off events. For 1173/1334 co-relation queries the response was YES. Maximal size of possible extension queue 377. Compared 97189 event pairs, 1446 based on Foata normal form. 209/10503 useless extension candidates. Maximal degree in co-relation 16761. Up to 5441 conditions per place. [2024-10-11 23:58:24,109 INFO L140 encePairwiseOnDemand]: 84/93 looper letters, 118 selfloop transitions, 12 changer transitions 0/168 dead transitions. [2024-10-11 23:58:24,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 168 transitions, 694 flow [2024-10-11 23:58:24,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 23:58:24,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 23:58:24,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 321 transitions. [2024-10-11 23:58:24,112 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6903225806451613 [2024-10-11 23:58:24,112 INFO L175 Difference]: Start difference. First operand has 90 places, 80 transitions, 204 flow. Second operand 5 states and 321 transitions. [2024-10-11 23:58:24,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 168 transitions, 694 flow [2024-10-11 23:58:24,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 168 transitions, 671 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-10-11 23:58:24,119 INFO L231 Difference]: Finished difference. Result has 94 places, 91 transitions, 286 flow [2024-10-11 23:58:24,120 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=286, PETRI_PLACES=94, PETRI_TRANSITIONS=91} [2024-10-11 23:58:24,121 INFO L277 CegarLoopForPetriNet]: 82 programPoint places, 12 predicate places. [2024-10-11 23:58:24,122 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 91 transitions, 286 flow [2024-10-11 23:58:24,123 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 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) [2024-10-11 23:58:24,123 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:58:24,123 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2024-10-11 23:58:24,123 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-11 23:58:24,123 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-11 23:58:24,123 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:58:24,124 INFO L85 PathProgramCache]: Analyzing trace with hash 2115910986, now seen corresponding path program 1 times [2024-10-11 23:58:24,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:58:24,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140179161] [2024-10-11 23:58:24,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:58:24,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:58:24,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:58:24,174 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 23:58:24,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:58:24,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140179161] [2024-10-11 23:58:24,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140179161] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:58:24,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:58:24,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 23:58:24,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787330221] [2024-10-11 23:58:24,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:58:24,176 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 23:58:24,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:58:24,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 23:58:24,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 23:58:24,180 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 93 [2024-10-11 23:58:24,181 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 91 transitions, 286 flow. Second operand has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 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) [2024-10-11 23:58:24,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:58:24,181 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 93 [2024-10-11 23:58:24,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:58:25,017 INFO L124 PetriNetUnfolderBase]: 5235/10715 cut-off events. [2024-10-11 23:58:25,017 INFO L125 PetriNetUnfolderBase]: For 3989/3993 co-relation queries the response was YES. [2024-10-11 23:58:25,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22510 conditions, 10715 events. 5235/10715 cut-off events. For 3989/3993 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 90605 event pairs, 1118 based on Foata normal form. 152/10234 useless extension candidates. Maximal degree in co-relation 17039. Up to 7245 conditions per place. [2024-10-11 23:58:25,071 INFO L140 encePairwiseOnDemand]: 88/93 looper letters, 102 selfloop transitions, 6 changer transitions 0/145 dead transitions. [2024-10-11 23:58:25,071 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 145 transitions, 672 flow [2024-10-11 23:58:25,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 23:58:25,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 23:58:25,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 234 transitions. [2024-10-11 23:58:25,075 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6290322580645161 [2024-10-11 23:58:25,075 INFO L175 Difference]: Start difference. First operand has 94 places, 91 transitions, 286 flow. Second operand 4 states and 234 transitions. [2024-10-11 23:58:25,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 145 transitions, 672 flow [2024-10-11 23:58:25,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 145 transitions, 668 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-10-11 23:58:25,081 INFO L231 Difference]: Finished difference. Result has 96 places, 91 transitions, 298 flow [2024-10-11 23:58:25,081 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=298, PETRI_PLACES=96, PETRI_TRANSITIONS=91} [2024-10-11 23:58:25,082 INFO L277 CegarLoopForPetriNet]: 82 programPoint places, 14 predicate places. [2024-10-11 23:58:25,082 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 91 transitions, 298 flow [2024-10-11 23:58:25,082 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 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) [2024-10-11 23:58:25,082 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:58:25,082 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1] [2024-10-11 23:58:25,083 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-11 23:58:25,083 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-11 23:58:25,083 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:58:25,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1870941858, now seen corresponding path program 1 times [2024-10-11 23:58:25,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:58:25,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686234452] [2024-10-11 23:58:25,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:58:25,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:58:25,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 23:58:25,098 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-11 23:58:25,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 23:58:25,110 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-11 23:58:25,110 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-11 23:58:25,110 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2024-10-11 23:58:25,111 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2024-10-11 23:58:25,111 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2024-10-11 23:58:25,111 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2024-10-11 23:58:25,111 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2024-10-11 23:58:25,111 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2024-10-11 23:58:25,111 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2024-10-11 23:58:25,111 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2024-10-11 23:58:25,112 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2024-10-11 23:58:25,112 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2024-10-11 23:58:25,112 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2024-10-11 23:58:25,112 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2024-10-11 23:58:25,112 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2024-10-11 23:58:25,112 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2024-10-11 23:58:25,112 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2024-10-11 23:58:25,112 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2024-10-11 23:58:25,112 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2024-10-11 23:58:25,112 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-11 23:58:25,113 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-10-11 23:58:25,113 WARN L239 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-11 23:58:25,113 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-10-11 23:58:25,133 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-11 23:58:25,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 110 places, 126 transitions, 279 flow [2024-10-11 23:58:25,152 INFO L124 PetriNetUnfolderBase]: 34/228 cut-off events. [2024-10-11 23:58:25,153 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-10-11 23:58:25,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 253 conditions, 228 events. 34/228 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 920 event pairs, 1 based on Foata normal form. 0/158 useless extension candidates. Maximal degree in co-relation 157. Up to 12 conditions per place. [2024-10-11 23:58:25,154 INFO L82 GeneralOperation]: Start removeDead. Operand has 110 places, 126 transitions, 279 flow [2024-10-11 23:58:25,155 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 110 places, 126 transitions, 279 flow [2024-10-11 23:58:25,156 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 23:58:25,157 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;@441a8744, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 23:58:25,157 INFO L334 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2024-10-11 23:58:25,158 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 23:58:25,159 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2024-10-11 23:58:25,159 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 23:58:25,159 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:58:25,159 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-10-11 23:58:25,159 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-10-11 23:58:25,159 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:58:25,159 INFO L85 PathProgramCache]: Analyzing trace with hash 558906261, now seen corresponding path program 1 times [2024-10-11 23:58:25,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:58:25,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837944116] [2024-10-11 23:58:25,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:58:25,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:58:25,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:58:25,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:58:25,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:58:25,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837944116] [2024-10-11 23:58:25,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837944116] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:58:25,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:58:25,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 23:58:25,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096400038] [2024-10-11 23:58:25,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:58:25,195 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 23:58:25,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:58:25,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 23:58:25,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 23:58:25,205 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 126 [2024-10-11 23:58:25,206 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 126 transitions, 279 flow. Second operand has 4 states, 4 states have (on average 52.25) internal successors, (209), 4 states have internal predecessors, (209), 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) [2024-10-11 23:58:25,206 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:58:25,206 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 126 [2024-10-11 23:58:25,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:58:34,659 INFO L124 PetriNetUnfolderBase]: 76325/138173 cut-off events. [2024-10-11 23:58:34,660 INFO L125 PetriNetUnfolderBase]: For 1879/1879 co-relation queries the response was YES. [2024-10-11 23:58:34,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 245270 conditions, 138173 events. 76325/138173 cut-off events. For 1879/1879 co-relation queries the response was YES. Maximal size of possible extension queue 3150. Compared 1452180 event pairs, 49600 based on Foata normal form. 29480/155039 useless extension candidates. Maximal degree in co-relation 15960. Up to 105935 conditions per place. [2024-10-11 23:58:35,608 INFO L140 encePairwiseOnDemand]: 100/126 looper letters, 77 selfloop transitions, 3 changer transitions 0/131 dead transitions. [2024-10-11 23:58:35,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 131 transitions, 449 flow [2024-10-11 23:58:35,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 23:58:35,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 23:58:35,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 319 transitions. [2024-10-11 23:58:35,782 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6329365079365079 [2024-10-11 23:58:35,782 INFO L175 Difference]: Start difference. First operand has 110 places, 126 transitions, 279 flow. Second operand 4 states and 319 transitions. [2024-10-11 23:58:35,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 131 transitions, 449 flow [2024-10-11 23:58:35,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 131 transitions, 449 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-11 23:58:35,789 INFO L231 Difference]: Finished difference. Result has 115 places, 108 transitions, 263 flow [2024-10-11 23:58:35,789 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=263, PETRI_PLACES=115, PETRI_TRANSITIONS=108} [2024-10-11 23:58:35,790 INFO L277 CegarLoopForPetriNet]: 110 programPoint places, 5 predicate places. [2024-10-11 23:58:35,790 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 108 transitions, 263 flow [2024-10-11 23:58:35,790 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.25) internal successors, (209), 4 states have internal predecessors, (209), 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) [2024-10-11 23:58:35,790 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:58:35,790 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:58:35,791 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-11 23:58:35,794 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-10-11 23:58:35,794 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:58:35,794 INFO L85 PathProgramCache]: Analyzing trace with hash -1772863142, now seen corresponding path program 1 times [2024-10-11 23:58:35,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:58:35,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456351569] [2024-10-11 23:58:35,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:58:35,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:58:35,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:58:35,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:58:35,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:58:35,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456351569] [2024-10-11 23:58:35,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456351569] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:58:35,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:58:35,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 23:58:35,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089653662] [2024-10-11 23:58:35,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:58:35,832 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 23:58:35,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:58:35,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 23:58:35,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 23:58:35,835 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 126 [2024-10-11 23:58:35,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 108 transitions, 263 flow. Second operand has 4 states, 4 states have (on average 53.75) internal successors, (215), 4 states have internal predecessors, (215), 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) [2024-10-11 23:58:35,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:58:35,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 126 [2024-10-11 23:58:35,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:58:48,700 INFO L124 PetriNetUnfolderBase]: 111387/192543 cut-off events. [2024-10-11 23:58:48,700 INFO L125 PetriNetUnfolderBase]: For 7138/11655 co-relation queries the response was YES. [2024-10-11 23:58:49,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 354539 conditions, 192543 events. 111387/192543 cut-off events. For 7138/11655 co-relation queries the response was YES. Maximal size of possible extension queue 4534. Compared 2001945 event pairs, 38008 based on Foata normal form. 2848/180517 useless extension candidates. Maximal degree in co-relation 354437. Up to 101431 conditions per place. [2024-10-11 23:58:49,755 INFO L140 encePairwiseOnDemand]: 115/126 looper letters, 170 selfloop transitions, 16 changer transitions 0/239 dead transitions. [2024-10-11 23:58:49,755 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 239 transitions, 967 flow [2024-10-11 23:58:49,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 23:58:49,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 23:58:49,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 447 transitions. [2024-10-11 23:58:49,757 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7095238095238096 [2024-10-11 23:58:49,757 INFO L175 Difference]: Start difference. First operand has 115 places, 108 transitions, 263 flow. Second operand 5 states and 447 transitions. [2024-10-11 23:58:49,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 239 transitions, 967 flow [2024-10-11 23:58:49,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 239 transitions, 963 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 23:58:49,765 INFO L231 Difference]: Finished difference. Result has 122 places, 123 transitions, 389 flow [2024-10-11 23:58:49,765 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=261, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=389, PETRI_PLACES=122, PETRI_TRANSITIONS=123} [2024-10-11 23:58:49,765 INFO L277 CegarLoopForPetriNet]: 110 programPoint places, 12 predicate places. [2024-10-11 23:58:49,766 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 123 transitions, 389 flow [2024-10-11 23:58:49,766 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.75) internal successors, (215), 4 states have internal predecessors, (215), 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) [2024-10-11 23:58:49,766 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:58:49,766 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2024-10-11 23:58:49,766 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-11 23:58:49,766 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-10-11 23:58:49,767 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:58:49,767 INFO L85 PathProgramCache]: Analyzing trace with hash -3693954, now seen corresponding path program 1 times [2024-10-11 23:58:49,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:58:49,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906110172] [2024-10-11 23:58:49,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:58:49,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:58:49,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:58:49,831 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:58:49,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:58:49,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906110172] [2024-10-11 23:58:49,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906110172] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 23:58:49,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [939378902] [2024-10-11 23:58:49,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:58:49,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:58:49,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:58:49,836 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 23:58:49,839 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-11 23:58:49,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:58:49,911 INFO L255 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-11 23:58:49,912 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 23:58:49,937 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:58:49,937 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 23:58:49,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [939378902] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:58:49,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 23:58:49,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-10-11 23:58:49,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316308519] [2024-10-11 23:58:49,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:58:49,938 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 23:58:49,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:58:49,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 23:58:49,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-11 23:58:49,944 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 126 [2024-10-11 23:58:49,945 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 123 transitions, 389 flow. Second operand has 6 states, 6 states have (on average 52.5) internal successors, (315), 6 states have internal predecessors, (315), 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) [2024-10-11 23:58:49,945 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:58:49,945 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 126 [2024-10-11 23:58:49,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand