./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/goblint-regression/09-regions_22-nocollapse.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 023d838f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/goblint-regression/09-regions_22-nocollapse.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a0270befea30c9963adb19613f3074c8c29d9100e1f0592dc0c89cf3d3dda0df --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 22:17:00,110 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 22:17:00,174 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-10 22:17:00,180 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 22:17:00,181 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 22:17:00,213 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 22:17:00,216 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 22:17:00,216 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 22:17:00,217 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 22:17:00,217 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 22:17:00,217 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 22:17:00,217 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 22:17:00,218 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 22:17:00,218 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 22:17:00,219 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 22:17:00,219 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 22:17:00,219 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-10 22:17:00,220 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 22:17:00,220 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 22:17:00,223 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 22:17:00,225 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 22:17:00,226 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-10 22:17:00,227 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 22:17:00,227 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-10 22:17:00,227 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 22:17:00,227 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-10 22:17:00,228 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-10 22:17:00,228 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 22:17:00,228 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-10 22:17:00,228 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 22:17:00,228 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 22:17:00,229 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 22:17:00,229 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 22:17:00,229 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 22:17:00,229 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 22:17:00,230 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 22:17:00,230 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 22:17:00,232 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-10 22:17:00,233 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 22:17:00,233 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 22:17:00,233 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 22:17:00,233 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 22:17:00,234 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 22:17:00,234 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 22:17:00,234 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a0270befea30c9963adb19613f3074c8c29d9100e1f0592dc0c89cf3d3dda0df [2024-11-10 22:17:00,525 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 22:17:00,550 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 22:17:00,553 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 22:17:00,554 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 22:17:00,554 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 22:17:00,556 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/09-regions_22-nocollapse.i [2024-11-10 22:17:01,981 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 22:17:02,260 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 22:17:02,260 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/09-regions_22-nocollapse.i [2024-11-10 22:17:02,286 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/866830dba/007442c091a048c38dbfec10fa88c3ac/FLAG4d776b732 [2024-11-10 22:17:02,555 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/866830dba/007442c091a048c38dbfec10fa88c3ac [2024-11-10 22:17:02,558 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 22:17:02,559 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 22:17:02,565 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 22:17:02,565 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 22:17:02,571 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 22:17:02,572 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:17:02" (1/1) ... [2024-11-10 22:17:02,572 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@451a8531 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:17:02, skipping insertion in model container [2024-11-10 22:17:02,572 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:17:02" (1/1) ... [2024-11-10 22:17:02,620 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 22:17:03,150 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-10 22:17:03,151 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-10 22:17:03,152 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-10 22:17:03,153 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-10 22:17:03,188 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 22:17:03,230 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 22:17:03,286 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-10 22:17:03,286 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-10 22:17:03,287 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-10 22:17:03,287 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-10 22:17:03,299 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 22:17:03,365 INFO L204 MainTranslator]: Completed translation [2024-11-10 22:17:03,365 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:17:03 WrapperNode [2024-11-10 22:17:03,365 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 22:17:03,367 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 22:17:03,367 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 22:17:03,367 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 22:17:03,374 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:17:03" (1/1) ... [2024-11-10 22:17:03,392 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:17:03" (1/1) ... [2024-11-10 22:17:03,424 INFO L138 Inliner]: procedures = 274, calls = 98, calls flagged for inlining = 9, calls inlined = 8, statements flattened = 198 [2024-11-10 22:17:03,425 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 22:17:03,426 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 22:17:03,426 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 22:17:03,426 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 22:17:03,438 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:17:03" (1/1) ... [2024-11-10 22:17:03,438 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:17:03" (1/1) ... [2024-11-10 22:17:03,445 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:17:03" (1/1) ... [2024-11-10 22:17:03,471 INFO L175 MemorySlicer]: Split 84 memory accesses to 1 slices as follows [84]. 100 percent of accesses are in the largest equivalence class. The 70 initializations are split as follows [70]. The 10 writes are split as follows [10]. [2024-11-10 22:17:03,475 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:17:03" (1/1) ... [2024-11-10 22:17:03,476 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:17:03" (1/1) ... [2024-11-10 22:17:03,485 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:17:03" (1/1) ... [2024-11-10 22:17:03,486 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:17:03" (1/1) ... [2024-11-10 22:17:03,488 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:17:03" (1/1) ... [2024-11-10 22:17:03,489 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:17:03" (1/1) ... [2024-11-10 22:17:03,492 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 22:17:03,493 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 22:17:03,494 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 22:17:03,494 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 22:17:03,495 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:17:03" (1/1) ... [2024-11-10 22:17:03,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 22:17:03,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:17:03,530 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-10 22:17:03,533 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-10 22:17:03,571 INFO L130 BoogieDeclarations]: Found specification of procedure f [2024-11-10 22:17:03,571 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2024-11-10 22:17:03,571 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-10 22:17:03,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-10 22:17:03,572 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-10 22:17:03,572 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-10 22:17:03,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-10 22:17:03,572 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-10 22:17:03,572 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-10 22:17:03,572 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 22:17:03,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-10 22:17:03,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 22:17:03,572 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 22:17:03,572 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 22:17:03,574 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-10 22:17:03,706 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 22:17:03,708 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 22:17:04,209 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 22:17:04,209 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 22:17:04,762 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 22:17:04,762 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 22:17:04,763 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:17:04 BoogieIcfgContainer [2024-11-10 22:17:04,763 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 22:17:04,765 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 22:17:04,765 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 22:17:04,770 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 22:17:04,770 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 10:17:02" (1/3) ... [2024-11-10 22:17:04,771 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f81c8c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:17:04, skipping insertion in model container [2024-11-10 22:17:04,771 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:17:03" (2/3) ... [2024-11-10 22:17:04,772 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f81c8c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:17:04, skipping insertion in model container [2024-11-10 22:17:04,773 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:17:04" (3/3) ... [2024-11-10 22:17:04,774 INFO L112 eAbstractionObserver]: Analyzing ICFG 09-regions_22-nocollapse.i [2024-11-10 22:17:04,793 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 22:17:04,795 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2024-11-10 22:17:04,795 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 22:17:04,859 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-10 22:17:04,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 68 places, 73 transitions, 154 flow [2024-11-10 22:17:04,942 INFO L124 PetriNetUnfolderBase]: 12/71 cut-off events. [2024-11-10 22:17:04,943 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 22:17:04,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 71 events. 12/71 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 202 event pairs, 0 based on Foata normal form. 0/45 useless extension candidates. Maximal degree in co-relation 49. Up to 2 conditions per place. [2024-11-10 22:17:04,947 INFO L82 GeneralOperation]: Start removeDead. Operand has 68 places, 73 transitions, 154 flow [2024-11-10 22:17:04,951 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 71 transitions, 148 flow [2024-11-10 22:17:04,986 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 22:17:04,997 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;@24c285f9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 22:17:04,997 INFO L334 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2024-11-10 22:17:05,007 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 22:17:05,008 INFO L124 PetriNetUnfolderBase]: 2/15 cut-off events. [2024-11-10 22:17:05,008 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 22:17:05,008 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:17:05,009 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-10 22:17:05,010 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-10 22:17:05,016 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:17:05,016 INFO L85 PathProgramCache]: Analyzing trace with hash 1654208165, now seen corresponding path program 1 times [2024-11-10 22:17:05,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:17:05,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750668112] [2024-11-10 22:17:05,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:17:05,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:17:05,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-10 22:17:05,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [389196231] [2024-11-10 22:17:05,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:17:05,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:17:05,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:17:05,227 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:17:05,229 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-10 22:17:05,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:17:05,364 INFO L255 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-10 22:17:05,369 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:17:05,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:17:05,415 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 22:17:05,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:17:05,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750668112] [2024-11-10 22:17:05,416 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-10 22:17:05,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [389196231] [2024-11-10 22:17:05,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [389196231] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:17:05,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:17:05,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-10 22:17:05,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592555105] [2024-11-10 22:17:05,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:17:05,430 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 22:17:05,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:17:05,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 22:17:05,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 22:17:05,471 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 73 [2024-11-10 22:17:05,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 71 transitions, 148 flow. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:17:05,475 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:17:05,475 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 73 [2024-11-10 22:17:05,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:17:05,846 INFO L124 PetriNetUnfolderBase]: 246/667 cut-off events. [2024-11-10 22:17:05,847 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-10 22:17:05,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1091 conditions, 667 events. 246/667 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3821 event pairs, 175 based on Foata normal form. 73/651 useless extension candidates. Maximal degree in co-relation 1031. Up to 398 conditions per place. [2024-11-10 22:17:05,855 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 35 selfloop transitions, 2 changer transitions 0/70 dead transitions. [2024-11-10 22:17:05,855 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 70 transitions, 220 flow [2024-11-10 22:17:05,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 22:17:05,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 22:17:05,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 153 transitions. [2024-11-10 22:17:05,868 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6986301369863014 [2024-11-10 22:17:05,869 INFO L175 Difference]: Start difference. First operand has 66 places, 71 transitions, 148 flow. Second operand 3 states and 153 transitions. [2024-11-10 22:17:05,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 70 transitions, 220 flow [2024-11-10 22:17:05,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 70 transitions, 218 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 22:17:05,876 INFO L231 Difference]: Finished difference. Result has 67 places, 66 transitions, 150 flow [2024-11-10 22:17:05,878 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=150, PETRI_PLACES=67, PETRI_TRANSITIONS=66} [2024-11-10 22:17:05,883 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 1 predicate places. [2024-11-10 22:17:05,883 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 66 transitions, 150 flow [2024-11-10 22:17:05,884 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:17:05,884 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:17:05,884 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:17:05,905 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-10 22:17:06,084 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-10 22:17:06,085 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-10 22:17:06,087 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:17:06,088 INFO L85 PathProgramCache]: Analyzing trace with hash -259156031, now seen corresponding path program 1 times [2024-11-10 22:17:06,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:17:06,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333025677] [2024-11-10 22:17:06,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:17:06,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:17:06,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:17:06,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:17:06,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:17:06,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333025677] [2024-11-10 22:17:06,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333025677] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:17:06,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:17:06,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:17:06,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576621068] [2024-11-10 22:17:06,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:17:06,285 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 22:17:06,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:17:06,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 22:17:06,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 22:17:06,298 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 73 [2024-11-10 22:17:06,298 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 66 transitions, 150 flow. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:17:06,299 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:17:06,299 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 73 [2024-11-10 22:17:06,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:17:06,574 INFO L124 PetriNetUnfolderBase]: 246/683 cut-off events. [2024-11-10 22:17:06,574 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-10 22:17:06,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1119 conditions, 683 events. 246/683 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3929 event pairs, 175 based on Foata normal form. 4/600 useless extension candidates. Maximal degree in co-relation 1078. Up to 404 conditions per place. [2024-11-10 22:17:06,580 INFO L140 encePairwiseOnDemand]: 68/73 looper letters, 33 selfloop transitions, 2 changer transitions 0/68 dead transitions. [2024-11-10 22:17:06,580 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 68 transitions, 224 flow [2024-11-10 22:17:06,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 22:17:06,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 22:17:06,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 142 transitions. [2024-11-10 22:17:06,583 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6484018264840182 [2024-11-10 22:17:06,583 INFO L175 Difference]: Start difference. First operand has 67 places, 66 transitions, 150 flow. Second operand 3 states and 142 transitions. [2024-11-10 22:17:06,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 68 transitions, 224 flow [2024-11-10 22:17:06,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 68 transitions, 222 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:17:06,586 INFO L231 Difference]: Finished difference. Result has 69 places, 67 transitions, 164 flow [2024-11-10 22:17:06,586 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=164, PETRI_PLACES=69, PETRI_TRANSITIONS=67} [2024-11-10 22:17:06,587 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 3 predicate places. [2024-11-10 22:17:06,587 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 67 transitions, 164 flow [2024-11-10 22:17:06,587 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:17:06,587 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:17:06,588 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:17:06,588 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 22:17:06,588 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-10 22:17:06,588 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:17:06,588 INFO L85 PathProgramCache]: Analyzing trace with hash 556159840, now seen corresponding path program 1 times [2024-11-10 22:17:06,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:17:06,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570869595] [2024-11-10 22:17:06,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:17:06,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:17:06,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:17:06,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:17:06,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:17:06,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570869595] [2024-11-10 22:17:06,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570869595] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:17:06,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:17:06,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:17:06,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860998680] [2024-11-10 22:17:06,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:17:06,819 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:17:06,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:17:06,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:17:06,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:17:06,836 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 73 [2024-11-10 22:17:06,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 67 transitions, 164 flow. Second operand has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:17:06,838 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:17:06,839 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 73 [2024-11-10 22:17:06,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:17:07,307 INFO L124 PetriNetUnfolderBase]: 246/679 cut-off events. [2024-11-10 22:17:07,308 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2024-11-10 22:17:07,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1131 conditions, 679 events. 246/679 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3928 event pairs, 175 based on Foata normal form. 4/600 useless extension candidates. Maximal degree in co-relation 1064. Up to 408 conditions per place. [2024-11-10 22:17:07,313 INFO L140 encePairwiseOnDemand]: 68/73 looper letters, 34 selfloop transitions, 3 changer transitions 0/68 dead transitions. [2024-11-10 22:17:07,313 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 68 transitions, 240 flow [2024-11-10 22:17:07,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:17:07,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:17:07,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 170 transitions. [2024-11-10 22:17:07,315 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5821917808219178 [2024-11-10 22:17:07,315 INFO L175 Difference]: Start difference. First operand has 69 places, 67 transitions, 164 flow. Second operand 4 states and 170 transitions. [2024-11-10 22:17:07,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 68 transitions, 240 flow [2024-11-10 22:17:07,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 68 transitions, 238 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:17:07,318 INFO L231 Difference]: Finished difference. Result has 73 places, 68 transitions, 180 flow [2024-11-10 22:17:07,318 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=180, PETRI_PLACES=73, PETRI_TRANSITIONS=68} [2024-11-10 22:17:07,319 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 7 predicate places. [2024-11-10 22:17:07,320 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 68 transitions, 180 flow [2024-11-10 22:17:07,320 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:17:07,320 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:17:07,320 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:17:07,321 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-10 22:17:07,321 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-10 22:17:07,321 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:17:07,322 INFO L85 PathProgramCache]: Analyzing trace with hash 68797734, now seen corresponding path program 1 times [2024-11-10 22:17:07,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:17:07,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185376583] [2024-11-10 22:17:07,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:17:07,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:17:07,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:17:07,483 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:17:07,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:17:07,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185376583] [2024-11-10 22:17:07,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185376583] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:17:07,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [431773616] [2024-11-10 22:17:07,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:17:07,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:17:07,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:17:07,487 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:17:07,488 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-10 22:17:07,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:17:07,641 INFO L255 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-10 22:17:07,643 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:17:07,695 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:17:07,695 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:17:07,740 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:17:07,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [431773616] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:17:07,741 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:17:07,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-10 22:17:07,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230388448] [2024-11-10 22:17:07,741 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:17:07,742 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-10 22:17:07,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:17:07,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-10 22:17:07,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-10 22:17:07,793 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 73 [2024-11-10 22:17:07,794 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 68 transitions, 180 flow. Second operand has 10 states, 10 states have (on average 33.6) internal successors, (336), 10 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:17:07,794 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:17:07,794 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 73 [2024-11-10 22:17:07,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:17:08,336 INFO L124 PetriNetUnfolderBase]: 246/699 cut-off events. [2024-11-10 22:17:08,336 INFO L125 PetriNetUnfolderBase]: For 52/52 co-relation queries the response was YES. [2024-11-10 22:17:08,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1193 conditions, 699 events. 246/699 cut-off events. For 52/52 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 4039 event pairs, 175 based on Foata normal form. 6/622 useless extension candidates. Maximal degree in co-relation 1085. Up to 398 conditions per place. [2024-11-10 22:17:08,342 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 37 selfloop transitions, 9 changer transitions 0/76 dead transitions. [2024-11-10 22:17:08,342 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 76 transitions, 302 flow [2024-11-10 22:17:08,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-10 22:17:08,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-10 22:17:08,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 336 transitions. [2024-11-10 22:17:08,348 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5114155251141552 [2024-11-10 22:17:08,349 INFO L175 Difference]: Start difference. First operand has 73 places, 68 transitions, 180 flow. Second operand 9 states and 336 transitions. [2024-11-10 22:17:08,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 76 transitions, 302 flow [2024-11-10 22:17:08,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 76 transitions, 298 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 22:17:08,352 INFO L231 Difference]: Finished difference. Result has 83 places, 72 transitions, 230 flow [2024-11-10 22:17:08,353 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=230, PETRI_PLACES=83, PETRI_TRANSITIONS=72} [2024-11-10 22:17:08,354 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 17 predicate places. [2024-11-10 22:17:08,355 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 72 transitions, 230 flow [2024-11-10 22:17:08,355 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 33.6) internal successors, (336), 10 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:17:08,356 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:17:08,356 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-10 22:17:08,374 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-10 22:17:08,560 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-10 22:17:08,561 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-10 22:17:08,562 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:17:08,562 INFO L85 PathProgramCache]: Analyzing trace with hash 2132791963, now seen corresponding path program 1 times [2024-11-10 22:17:08,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:17:08,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838387584] [2024-11-10 22:17:08,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:17:08,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:17:08,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:17:08,749 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:17:08,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:17:08,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838387584] [2024-11-10 22:17:08,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838387584] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:17:08,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [7698817] [2024-11-10 22:17:08,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:17:08,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:17:08,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:17:08,752 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:17:08,753 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-10 22:17:08,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:17:08,911 INFO L255 TraceCheckSpWp]: Trace formula consists of 411 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 22:17:08,913 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:17:08,947 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:17:08,947 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 22:17:08,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [7698817] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:17:08,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 22:17:08,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-10 22:17:08,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536393851] [2024-11-10 22:17:08,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:17:08,948 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 22:17:08,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:17:08,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 22:17:08,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-10 22:17:08,969 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 73 [2024-11-10 22:17:08,970 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 72 transitions, 230 flow. Second operand has 6 states, 6 states have (on average 34.0) internal successors, (204), 6 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:17:08,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:17:08,970 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 73 [2024-11-10 22:17:08,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:17:09,352 INFO L124 PetriNetUnfolderBase]: 246/695 cut-off events. [2024-11-10 22:17:09,353 INFO L125 PetriNetUnfolderBase]: For 114/114 co-relation queries the response was YES. [2024-11-10 22:17:09,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1210 conditions, 695 events. 246/695 cut-off events. For 114/114 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 4007 event pairs, 175 based on Foata normal form. 4/616 useless extension candidates. Maximal degree in co-relation 1103. Up to 394 conditions per place. [2024-11-10 22:17:09,386 INFO L140 encePairwiseOnDemand]: 68/73 looper letters, 30 selfloop transitions, 8 changer transitions 0/70 dead transitions. [2024-11-10 22:17:09,387 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 70 transitions, 292 flow [2024-11-10 22:17:09,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 22:17:09,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 22:17:09,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 234 transitions. [2024-11-10 22:17:09,389 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5342465753424658 [2024-11-10 22:17:09,389 INFO L175 Difference]: Start difference. First operand has 83 places, 72 transitions, 230 flow. Second operand 6 states and 234 transitions. [2024-11-10 22:17:09,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 70 transitions, 292 flow [2024-11-10 22:17:09,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 70 transitions, 284 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-10 22:17:09,393 INFO L231 Difference]: Finished difference. Result has 83 places, 70 transitions, 224 flow [2024-11-10 22:17:09,393 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=224, PETRI_PLACES=83, PETRI_TRANSITIONS=70} [2024-11-10 22:17:09,394 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 17 predicate places. [2024-11-10 22:17:09,394 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 70 transitions, 224 flow [2024-11-10 22:17:09,395 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 34.0) internal successors, (204), 6 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:17:09,395 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:17:09,395 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 1, 1, 1, 1] [2024-11-10 22:17:09,414 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-10 22:17:09,596 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:17:09,596 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-10 22:17:09,597 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:17:09,597 INFO L85 PathProgramCache]: Analyzing trace with hash -1293321532, now seen corresponding path program 1 times [2024-11-10 22:17:09,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:17:09,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412662146] [2024-11-10 22:17:09,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:17:09,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:17:09,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:17:09,793 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-10 22:17:09,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:17:09,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412662146] [2024-11-10 22:17:09,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412662146] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:17:09,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:17:09,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:17:09,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979916185] [2024-11-10 22:17:09,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:17:09,796 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:17:09,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:17:09,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:17:09,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:17:09,815 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 73 [2024-11-10 22:17:09,816 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 70 transitions, 224 flow. Second operand has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:17:09,816 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:17:09,816 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 73 [2024-11-10 22:17:09,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:17:10,018 INFO L124 PetriNetUnfolderBase]: 246/693 cut-off events. [2024-11-10 22:17:10,019 INFO L125 PetriNetUnfolderBase]: For 136/136 co-relation queries the response was YES. [2024-11-10 22:17:10,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1215 conditions, 693 events. 246/693 cut-off events. For 136/136 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 3987 event pairs, 175 based on Foata normal form. 2/612 useless extension candidates. Maximal degree in co-relation 1109. Up to 402 conditions per place. [2024-11-10 22:17:10,025 INFO L140 encePairwiseOnDemand]: 68/73 looper letters, 29 selfloop transitions, 9 changer transitions 0/70 dead transitions. [2024-11-10 22:17:10,025 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 70 transitions, 298 flow [2024-11-10 22:17:10,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:17:10,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:17:10,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 169 transitions. [2024-11-10 22:17:10,027 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5787671232876712 [2024-11-10 22:17:10,027 INFO L175 Difference]: Start difference. First operand has 83 places, 70 transitions, 224 flow. Second operand 4 states and 169 transitions. [2024-11-10 22:17:10,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 70 transitions, 298 flow [2024-11-10 22:17:10,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 70 transitions, 282 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-11-10 22:17:10,030 INFO L231 Difference]: Finished difference. Result has 80 places, 70 transitions, 232 flow [2024-11-10 22:17:10,031 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=232, PETRI_PLACES=80, PETRI_TRANSITIONS=70} [2024-11-10 22:17:10,031 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 14 predicate places. [2024-11-10 22:17:10,032 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 70 transitions, 232 flow [2024-11-10 22:17:10,032 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:17:10,032 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:17:10,032 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2024-11-10 22:17:10,032 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-10 22:17:10,033 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-10 22:17:10,033 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:17:10,033 INFO L85 PathProgramCache]: Analyzing trace with hash -649604944, now seen corresponding path program 2 times [2024-11-10 22:17:10,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:17:10,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137033406] [2024-11-10 22:17:10,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:17:10,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:17:10,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:17:10,268 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-10 22:17:10,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:17:10,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137033406] [2024-11-10 22:17:10,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137033406] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:17:10,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:17:10,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 22:17:10,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137176280] [2024-11-10 22:17:10,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:17:10,270 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:17:10,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:17:10,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:17:10,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:17:10,283 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 73 [2024-11-10 22:17:10,283 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 70 transitions, 232 flow. Second operand has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:17:10,284 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:17:10,284 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 73 [2024-11-10 22:17:10,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:17:10,646 INFO L124 PetriNetUnfolderBase]: 246/691 cut-off events. [2024-11-10 22:17:10,646 INFO L125 PetriNetUnfolderBase]: For 157/157 co-relation queries the response was YES. [2024-11-10 22:17:10,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1221 conditions, 691 events. 246/691 cut-off events. For 157/157 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 3990 event pairs, 175 based on Foata normal form. 2/612 useless extension candidates. Maximal degree in co-relation 1090. Up to 406 conditions per place. [2024-11-10 22:17:10,651 INFO L140 encePairwiseOnDemand]: 68/73 looper letters, 44 selfloop transitions, 3 changer transitions 0/78 dead transitions. [2024-11-10 22:17:10,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 78 transitions, 392 flow [2024-11-10 22:17:10,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:17:10,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:17:10,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 173 transitions. [2024-11-10 22:17:10,653 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5924657534246576 [2024-11-10 22:17:10,653 INFO L175 Difference]: Start difference. First operand has 80 places, 70 transitions, 232 flow. Second operand 4 states and 173 transitions. [2024-11-10 22:17:10,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 78 transitions, 392 flow [2024-11-10 22:17:10,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 78 transitions, 368 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-10 22:17:10,657 INFO L231 Difference]: Finished difference. Result has 83 places, 71 transitions, 237 flow [2024-11-10 22:17:10,657 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=237, PETRI_PLACES=83, PETRI_TRANSITIONS=71} [2024-11-10 22:17:10,658 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 17 predicate places. [2024-11-10 22:17:10,658 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 71 transitions, 237 flow [2024-11-10 22:17:10,662 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:17:10,662 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:17:10,662 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 5, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-10 22:17:10,662 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-10 22:17:10,663 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-10 22:17:10,663 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:17:10,663 INFO L85 PathProgramCache]: Analyzing trace with hash -1236925594, now seen corresponding path program 1 times [2024-11-10 22:17:10,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:17:10,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466877303] [2024-11-10 22:17:10,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:17:10,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:17:10,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:17:11,033 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 33 proven. 24 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-10 22:17:11,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:17:11,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466877303] [2024-11-10 22:17:11,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466877303] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:17:11,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [959012599] [2024-11-10 22:17:11,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:17:11,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:17:11,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:17:11,036 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:17:11,037 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-10 22:17:11,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:17:11,305 INFO L255 TraceCheckSpWp]: Trace formula consists of 641 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-10 22:17:11,308 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:17:11,365 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 33 proven. 24 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-10 22:17:11,365 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:17:11,470 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 33 proven. 24 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-10 22:17:11,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [959012599] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:17:11,471 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:17:11,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2024-11-10 22:17:11,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791855225] [2024-11-10 22:17:11,471 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:17:11,472 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-10 22:17:11,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:17:11,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-10 22:17:11,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2024-11-10 22:17:11,544 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 73 [2024-11-10 22:17:11,545 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 71 transitions, 237 flow. Second operand has 18 states, 18 states have (on average 33.888888888888886) internal successors, (610), 18 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:17:11,545 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:17:11,545 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 73 [2024-11-10 22:17:11,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:17:12,492 INFO L124 PetriNetUnfolderBase]: 246/747 cut-off events. [2024-11-10 22:17:12,492 INFO L125 PetriNetUnfolderBase]: For 348/348 co-relation queries the response was YES. [2024-11-10 22:17:12,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1399 conditions, 747 events. 246/747 cut-off events. For 348/348 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 4037 event pairs, 175 based on Foata normal form. 8/674 useless extension candidates. Maximal degree in co-relation 1236. Up to 398 conditions per place. [2024-11-10 22:17:12,496 INFO L140 encePairwiseOnDemand]: 68/73 looper letters, 49 selfloop transitions, 15 changer transitions 0/94 dead transitions. [2024-11-10 22:17:12,496 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 94 transitions, 527 flow [2024-11-10 22:17:12,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-10 22:17:12,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-10 22:17:12,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 546 transitions. [2024-11-10 22:17:12,498 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4986301369863014 [2024-11-10 22:17:12,498 INFO L175 Difference]: Start difference. First operand has 83 places, 71 transitions, 237 flow. Second operand 15 states and 546 transitions. [2024-11-10 22:17:12,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 94 transitions, 527 flow [2024-11-10 22:17:12,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 94 transitions, 523 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 22:17:12,502 INFO L231 Difference]: Finished difference. Result has 100 places, 80 transitions, 359 flow [2024-11-10 22:17:12,502 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=233, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=359, PETRI_PLACES=100, PETRI_TRANSITIONS=80} [2024-11-10 22:17:12,503 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 34 predicate places. [2024-11-10 22:17:12,503 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 80 transitions, 359 flow [2024-11-10 22:17:12,503 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 33.888888888888886) internal successors, (610), 18 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:17:12,504 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:17:12,504 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 9, 8, 8, 8, 8, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-10 22:17:12,523 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-10 22:17:12,704 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:17:12,705 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-10 22:17:12,705 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:17:12,705 INFO L85 PathProgramCache]: Analyzing trace with hash -611770502, now seen corresponding path program 2 times [2024-11-10 22:17:12,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:17:12,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778856552] [2024-11-10 22:17:12,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:17:12,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:17:12,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:17:13,504 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 69 proven. 140 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-10 22:17:13,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:17:13,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778856552] [2024-11-10 22:17:13,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778856552] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:17:13,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [359541986] [2024-11-10 22:17:13,506 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 22:17:13,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:17:13,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:17:13,508 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:17:13,510 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-10 22:17:13,941 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 22:17:13,941 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 22:17:13,948 INFO L255 TraceCheckSpWp]: Trace formula consists of 1017 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-10 22:17:13,951 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:17:14,053 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 69 proven. 140 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-10 22:17:14,053 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:17:14,393 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 69 proven. 140 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-10 22:17:14,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [359541986] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:17:14,394 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:17:14,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 34 [2024-11-10 22:17:14,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105229609] [2024-11-10 22:17:14,394 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:17:14,394 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-10 22:17:14,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:17:14,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-10 22:17:14,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=816, Unknown=0, NotChecked=0, Total=1122 [2024-11-10 22:17:14,504 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 73 [2024-11-10 22:17:14,506 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 80 transitions, 359 flow. Second operand has 34 states, 34 states have (on average 33.705882352941174) internal successors, (1146), 34 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:17:14,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:17:14,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 73 [2024-11-10 22:17:14,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:17:16,552 INFO L124 PetriNetUnfolderBase]: 246/859 cut-off events. [2024-11-10 22:17:16,553 INFO L125 PetriNetUnfolderBase]: For 1720/1720 co-relation queries the response was YES. [2024-11-10 22:17:16,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1893 conditions, 859 events. 246/859 cut-off events. For 1720/1720 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 4061 event pairs, 175 based on Foata normal form. 16/794 useless extension candidates. Maximal degree in co-relation 1510. Up to 398 conditions per place. [2024-11-10 22:17:16,558 INFO L140 encePairwiseOnDemand]: 68/73 looper letters, 73 selfloop transitions, 31 changer transitions 0/134 dead transitions. [2024-11-10 22:17:16,558 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 134 transitions, 1031 flow [2024-11-10 22:17:16,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-10 22:17:16,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2024-11-10 22:17:16,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1102 transitions. [2024-11-10 22:17:16,562 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4869642068051259 [2024-11-10 22:17:16,562 INFO L175 Difference]: Start difference. First operand has 100 places, 80 transitions, 359 flow. Second operand 31 states and 1102 transitions. [2024-11-10 22:17:16,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 134 transitions, 1031 flow [2024-11-10 22:17:16,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 134 transitions, 997 flow, removed 13 selfloop flow, removed 4 redundant places. [2024-11-10 22:17:16,568 INFO L231 Difference]: Finished difference. Result has 135 places, 97 transitions, 615 flow [2024-11-10 22:17:16,568 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=341, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=615, PETRI_PLACES=135, PETRI_TRANSITIONS=97} [2024-11-10 22:17:16,570 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 69 predicate places. [2024-11-10 22:17:16,570 INFO L471 AbstractCegarLoop]: Abstraction has has 135 places, 97 transitions, 615 flow [2024-11-10 22:17:16,571 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 33.705882352941174) internal successors, (1146), 34 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:17:16,572 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:17:16,572 INFO L204 CegarLoopForPetriNet]: trace histogram [18, 17, 16, 16, 16, 16, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-10 22:17:16,592 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-10 22:17:16,772 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:17:16,773 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-10 22:17:16,774 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:17:16,774 INFO L85 PathProgramCache]: Analyzing trace with hash 987325346, now seen corresponding path program 3 times [2024-11-10 22:17:16,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:17:16,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514770574] [2024-11-10 22:17:16,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:17:16,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:17:17,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:17:18,917 INFO L134 CoverageAnalysis]: Checked inductivity of 804 backedges. 141 proven. 660 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-10 22:17:18,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:17:18,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514770574] [2024-11-10 22:17:18,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514770574] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:17:18,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [571894252] [2024-11-10 22:17:18,918 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-10 22:17:18,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:17:18,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:17:18,921 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:17:18,923 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-10 22:17:19,380 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-10 22:17:19,380 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 22:17:19,385 INFO L255 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-10 22:17:19,389 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:17:19,639 INFO L134 CoverageAnalysis]: Checked inductivity of 804 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 660 trivial. 0 not checked. [2024-11-10 22:17:19,639 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 22:17:19,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [571894252] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:17:19,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 22:17:19,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [33] total 39 [2024-11-10 22:17:19,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591939059] [2024-11-10 22:17:19,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:17:19,640 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-10 22:17:19,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:17:19,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-10 22:17:19,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=308, Invalid=1174, Unknown=0, NotChecked=0, Total=1482 [2024-11-10 22:17:19,707 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 73 [2024-11-10 22:17:19,707 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 97 transitions, 615 flow. Second operand has 8 states, 8 states have (on average 31.375) internal successors, (251), 8 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:17:19,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:17:19,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 73 [2024-11-10 22:17:19,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:17:20,684 INFO L124 PetriNetUnfolderBase]: 246/844 cut-off events. [2024-11-10 22:17:20,684 INFO L125 PetriNetUnfolderBase]: For 1792/1792 co-relation queries the response was YES. [2024-11-10 22:17:20,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1896 conditions, 844 events. 246/844 cut-off events. For 1792/1792 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 4000 event pairs, 175 based on Foata normal form. 15/778 useless extension candidates. Maximal degree in co-relation 1480. Up to 389 conditions per place. [2024-11-10 22:17:20,691 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 58 selfloop transitions, 37 changer transitions 0/127 dead transitions. [2024-11-10 22:17:20,691 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 127 transitions, 1206 flow [2024-11-10 22:17:20,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-10 22:17:20,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-10 22:17:20,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 343 transitions. [2024-11-10 22:17:20,693 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46986301369863015 [2024-11-10 22:17:20,694 INFO L175 Difference]: Start difference. First operand has 135 places, 97 transitions, 615 flow. Second operand 10 states and 343 transitions. [2024-11-10 22:17:20,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 127 transitions, 1206 flow [2024-11-10 22:17:20,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 127 transitions, 1154 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-11-10 22:17:20,703 INFO L231 Difference]: Finished difference. Result has 135 places, 126 transitions, 1134 flow [2024-11-10 22:17:20,703 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=579, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1134, PETRI_PLACES=135, PETRI_TRANSITIONS=126} [2024-11-10 22:17:20,704 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 69 predicate places. [2024-11-10 22:17:20,706 INFO L471 AbstractCegarLoop]: Abstraction has has 135 places, 126 transitions, 1134 flow [2024-11-10 22:17:20,706 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 31.375) internal successors, (251), 8 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:17:20,706 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:17:20,706 INFO L204 CegarLoopForPetriNet]: trace histogram [18, 17, 17, 16, 16, 16, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-10 22:17:20,726 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-10 22:17:20,907 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:17:20,907 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-10 22:17:20,908 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:17:20,908 INFO L85 PathProgramCache]: Analyzing trace with hash 542315051, now seen corresponding path program 1 times [2024-11-10 22:17:20,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:17:20,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951970846] [2024-11-10 22:17:20,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:17:20,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:17:21,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:17:22,858 INFO L134 CoverageAnalysis]: Checked inductivity of 820 backedges. 156 proven. 660 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 22:17:22,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:17:22,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951970846] [2024-11-10 22:17:22,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951970846] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:17:22,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [882307141] [2024-11-10 22:17:22,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:17:22,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:17:22,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:17:22,862 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:17:22,863 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-10 22:17:23,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:17:23,589 INFO L255 TraceCheckSpWp]: Trace formula consists of 1770 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-10 22:17:23,592 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:17:23,745 INFO L134 CoverageAnalysis]: Checked inductivity of 820 backedges. 156 proven. 660 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 22:17:23,745 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:17:24,550 INFO L134 CoverageAnalysis]: Checked inductivity of 820 backedges. 156 proven. 660 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 22:17:24,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [882307141] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:17:24,550 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:17:24,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 63 [2024-11-10 22:17:24,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691251957] [2024-11-10 22:17:24,551 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:17:24,551 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2024-11-10 22:17:24,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:17:24,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2024-11-10 22:17:24,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1023, Invalid=2883, Unknown=0, NotChecked=0, Total=3906 [2024-11-10 22:17:24,726 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 73 [2024-11-10 22:17:24,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 126 transitions, 1134 flow. Second operand has 63 states, 63 states have (on average 33.63492063492063) internal successors, (2119), 63 states have internal predecessors, (2119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:17:24,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:17:24,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 73 [2024-11-10 22:17:24,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:17:28,076 INFO L124 PetriNetUnfolderBase]: 246/1039 cut-off events. [2024-11-10 22:17:28,076 INFO L125 PetriNetUnfolderBase]: For 8721/8721 co-relation queries the response was YES. [2024-11-10 22:17:28,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2967 conditions, 1039 events. 246/1039 cut-off events. For 8721/8721 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 4023 event pairs, 175 based on Foata normal form. 30/988 useless extension candidates. Maximal degree in co-relation 2074. Up to 398 conditions per place. [2024-11-10 22:17:28,086 INFO L140 encePairwiseOnDemand]: 68/73 looper letters, 90 selfloop transitions, 121 changer transitions 0/240 dead transitions. [2024-11-10 22:17:28,086 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 240 transitions, 3058 flow [2024-11-10 22:17:28,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2024-11-10 22:17:28,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2024-11-10 22:17:28,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 2115 transitions. [2024-11-10 22:17:28,095 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47496070065124635 [2024-11-10 22:17:28,095 INFO L175 Difference]: Start difference. First operand has 135 places, 126 transitions, 1134 flow. Second operand 61 states and 2115 transitions. [2024-11-10 22:17:28,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 240 transitions, 3058 flow [2024-11-10 22:17:28,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 240 transitions, 3046 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-11-10 22:17:28,119 INFO L231 Difference]: Finished difference. Result has 207 places, 187 transitions, 2442 flow [2024-11-10 22:17:28,120 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=1122, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=61, PETRI_FLOW=2442, PETRI_PLACES=207, PETRI_TRANSITIONS=187} [2024-11-10 22:17:28,121 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 141 predicate places. [2024-11-10 22:17:28,121 INFO L471 AbstractCegarLoop]: Abstraction has has 207 places, 187 transitions, 2442 flow [2024-11-10 22:17:28,124 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 33.63492063492063) internal successors, (2119), 63 states have internal predecessors, (2119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:17:28,124 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:17:28,124 INFO L204 CegarLoopForPetriNet]: trace histogram [33, 32, 32, 31, 31, 31, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-10 22:17:28,147 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-10 22:17:28,325 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:17:28,325 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-10 22:17:28,326 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:17:28,326 INFO L85 PathProgramCache]: Analyzing trace with hash -423760736, now seen corresponding path program 2 times [2024-11-10 22:17:28,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:17:28,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385881602] [2024-11-10 22:17:28,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:17:28,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms