./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/goblint-regression/09-regions_21-arrayloop2_nr.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/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_21-arrayloop2_nr.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 52746884466210ec366bc04a3a6cb03f413619353c73143d79c1024e676e598e --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-23 01:50:28,112 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 01:50:28,198 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-23 01:50:28,203 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 01:50:28,205 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 01:50:28,241 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 01:50:28,241 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 01:50:28,242 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 01:50:28,243 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 01:50:28,243 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 01:50:28,244 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 01:50:28,244 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 01:50:28,245 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 01:50:28,246 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 01:50:28,246 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 01:50:28,246 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 01:50:28,247 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 01:50:28,247 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-23 01:50:28,247 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 01:50:28,247 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-23 01:50:28,248 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 01:50:28,248 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 01:50:28,249 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 01:50:28,249 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 01:50:28,249 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-23 01:50:28,250 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-23 01:50:28,250 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-23 01:50:28,251 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-23 01:50:28,251 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 01:50:28,251 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 01:50:28,252 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 01:50:28,252 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 01:50:28,252 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 01:50:28,252 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 01:50:28,253 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 01:50:28,253 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 01:50:28,253 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 01:50:28,254 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 01:50:28,254 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 01:50:28,254 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 01:50:28,255 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 01:50:28,255 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 01:50:28,255 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 01:50:28,256 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 01:50:28,256 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 52746884466210ec366bc04a3a6cb03f413619353c73143d79c1024e676e598e [2024-11-23 01:50:28,523 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 01:50:28,550 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 01:50:28,557 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 01:50:28,558 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 01:50:28,560 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 01:50:28,562 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/09-regions_21-arrayloop2_nr.i [2024-11-23 01:50:30,044 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-23 01:50:30,320 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 01:50:30,321 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/09-regions_21-arrayloop2_nr.i [2024-11-23 01:50:30,345 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a544a54c7/28714362068c4cd5b49f73ea0fc980a1/FLAGa735d6599 [2024-11-23 01:50:30,621 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a544a54c7/28714362068c4cd5b49f73ea0fc980a1 [2024-11-23 01:50:30,624 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 01:50:30,626 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 01:50:30,627 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 01:50:30,628 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 01:50:30,633 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 01:50:30,633 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:50:30" (1/1) ... [2024-11-23 01:50:30,634 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2331484 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:50:30, skipping insertion in model container [2024-11-23 01:50:30,634 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:50:30" (1/1) ... [2024-11-23 01:50:30,675 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 01:50:31,078 WARN L1674 CHandler]: Possible shadowing of function new [2024-11-23 01:50:31,079 WARN L1674 CHandler]: Possible shadowing of function new [2024-11-23 01:50:31,079 WARN L1674 CHandler]: Possible shadowing of function new [2024-11-23 01:50:31,080 WARN L1674 CHandler]: Possible shadowing of function new [2024-11-23 01:50:31,102 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 01:50:31,135 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 01:50:31,192 WARN L1674 CHandler]: Possible shadowing of function new [2024-11-23 01:50:31,193 WARN L1674 CHandler]: Possible shadowing of function new [2024-11-23 01:50:31,193 WARN L1674 CHandler]: Possible shadowing of function new [2024-11-23 01:50:31,194 WARN L1674 CHandler]: Possible shadowing of function new [2024-11-23 01:50:31,210 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 01:50:31,285 INFO L204 MainTranslator]: Completed translation [2024-11-23 01:50:31,285 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:50:31 WrapperNode [2024-11-23 01:50:31,286 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 01:50:31,287 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 01:50:31,287 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 01:50:31,287 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 01:50:31,293 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:50:31" (1/1) ... [2024-11-23 01:50:31,322 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:50:31" (1/1) ... [2024-11-23 01:50:31,392 INFO L138 Inliner]: procedures = 273, calls = 95, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 191 [2024-11-23 01:50:31,394 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 01:50:31,395 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 01:50:31,395 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 01:50:31,396 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 01:50:31,407 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:50:31" (1/1) ... [2024-11-23 01:50:31,408 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:50:31" (1/1) ... [2024-11-23 01:50:31,414 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:50:31" (1/1) ... [2024-11-23 01:50:31,449 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]. [2024-11-23 01:50:31,451 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:50:31" (1/1) ... [2024-11-23 01:50:31,451 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:50:31" (1/1) ... [2024-11-23 01:50:31,461 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:50:31" (1/1) ... [2024-11-23 01:50:31,464 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:50:31" (1/1) ... [2024-11-23 01:50:31,465 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:50:31" (1/1) ... [2024-11-23 01:50:31,467 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:50:31" (1/1) ... [2024-11-23 01:50:31,469 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 01:50:31,470 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 01:50:31,470 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 01:50:31,470 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 01:50:31,471 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:50:31" (1/1) ... [2024-11-23 01:50:31,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 01:50:31,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:50:31,511 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) [2024-11-23 01:50:31,514 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 [2024-11-23 01:50:31,556 INFO L130 BoogieDeclarations]: Found specification of procedure f [2024-11-23 01:50:31,556 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2024-11-23 01:50:31,556 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-23 01:50:31,556 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-23 01:50:31,557 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-23 01:50:31,557 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-23 01:50:31,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-23 01:50:31,557 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-23 01:50:31,557 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-23 01:50:31,557 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 01:50:31,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-23 01:50:31,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-23 01:50:31,558 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 01:50:31,558 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 01:50:31,559 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-23 01:50:31,683 INFO L238 CfgBuilder]: Building ICFG [2024-11-23 01:50:31,685 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 01:50:32,044 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-23 01:50:32,045 INFO L287 CfgBuilder]: Performing block encoding [2024-11-23 01:50:32,664 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 01:50:32,664 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-23 01:50:32,665 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:50:32 BoogieIcfgContainer [2024-11-23 01:50:32,665 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 01:50:32,669 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 01:50:32,669 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 01:50:32,673 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 01:50:32,673 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:50:30" (1/3) ... [2024-11-23 01:50:32,674 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69e455f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:50:32, skipping insertion in model container [2024-11-23 01:50:32,674 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:50:31" (2/3) ... [2024-11-23 01:50:32,675 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69e455f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:50:32, skipping insertion in model container [2024-11-23 01:50:32,675 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:50:32" (3/3) ... [2024-11-23 01:50:32,676 INFO L112 eAbstractionObserver]: Analyzing ICFG 09-regions_21-arrayloop2_nr.i [2024-11-23 01:50:32,692 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 01:50:32,693 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2024-11-23 01:50:32,694 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-23 01:50:32,753 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-23 01:50:32,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 58 places, 57 transitions, 122 flow [2024-11-23 01:50:32,854 INFO L124 PetriNetUnfolderBase]: 6/55 cut-off events. [2024-11-23 01:50:32,855 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-23 01:50:32,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 55 events. 6/55 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 157 event pairs, 0 based on Foata normal form. 0/35 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2024-11-23 01:50:32,859 INFO L82 GeneralOperation]: Start removeDead. Operand has 58 places, 57 transitions, 122 flow [2024-11-23 01:50:32,863 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 56 places, 55 transitions, 116 flow [2024-11-23 01:50:32,877 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 01:50:32,884 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;@237c55ac, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 01:50:32,886 INFO L334 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2024-11-23 01:50:32,892 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-23 01:50:32,893 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-11-23 01:50:32,893 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-23 01:50:32,893 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:50:32,894 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-23 01:50:32,894 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-23 01:50:32,899 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:50:32,899 INFO L85 PathProgramCache]: Analyzing trace with hash 15512731, now seen corresponding path program 1 times [2024-11-23 01:50:32,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:50:32,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003777665] [2024-11-23 01:50:32,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:50:32,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:50:33,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-23 01:50:33,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [859920155] [2024-11-23 01:50:33,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:50:33,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:50:33,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:50:33,092 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) [2024-11-23 01:50:33,093 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-23 01:50:33,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:50:33,221 INFO L255 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-23 01:50:33,229 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:50:33,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:50:33,259 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 01:50:33,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:50:33,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003777665] [2024-11-23 01:50:33,260 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-23 01:50:33,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [859920155] [2024-11-23 01:50:33,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [859920155] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:50:33,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:50:33,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-23 01:50:33,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556237807] [2024-11-23 01:50:33,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:50:33,273 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 01:50:33,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:50:33,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 01:50:33,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 01:50:33,317 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 57 [2024-11-23 01:50:33,320 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 55 transitions, 116 flow. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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) [2024-11-23 01:50:33,320 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:50:33,321 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 57 [2024-11-23 01:50:33,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:50:33,666 INFO L124 PetriNetUnfolderBase]: 303/700 cut-off events. [2024-11-23 01:50:33,666 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-11-23 01:50:33,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1218 conditions, 700 events. 303/700 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3671 event pairs, 224 based on Foata normal form. 1/590 useless extension candidates. Maximal degree in co-relation 1166. Up to 490 conditions per place. [2024-11-23 01:50:33,676 INFO L140 encePairwiseOnDemand]: 52/57 looper letters, 36 selfloop transitions, 2 changer transitions 0/60 dead transitions. [2024-11-23 01:50:33,677 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 60 transitions, 202 flow [2024-11-23 01:50:33,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 01:50:33,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-23 01:50:33,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 113 transitions. [2024-11-23 01:50:33,690 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6608187134502924 [2024-11-23 01:50:33,691 INFO L175 Difference]: Start difference. First operand has 56 places, 55 transitions, 116 flow. Second operand 3 states and 113 transitions. [2024-11-23 01:50:33,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 60 transitions, 202 flow [2024-11-23 01:50:33,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 60 transitions, 200 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-23 01:50:33,698 INFO L231 Difference]: Finished difference. Result has 57 places, 56 transitions, 130 flow [2024-11-23 01:50:33,700 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=130, PETRI_PLACES=57, PETRI_TRANSITIONS=56} [2024-11-23 01:50:33,706 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 1 predicate places. [2024-11-23 01:50:33,706 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 56 transitions, 130 flow [2024-11-23 01:50:33,707 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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) [2024-11-23 01:50:33,707 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:50:33,707 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-23 01:50:33,716 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-23 01:50:33,907 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 [2024-11-23 01:50:33,908 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-23 01:50:33,909 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:50:33,909 INFO L85 PathProgramCache]: Analyzing trace with hash 15512752, now seen corresponding path program 1 times [2024-11-23 01:50:33,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:50:33,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688891569] [2024-11-23 01:50:33,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:50:33,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:50:33,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:50:34,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:50:34,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:50:34,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688891569] [2024-11-23 01:50:34,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688891569] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:50:34,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:50:34,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 01:50:34,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578813638] [2024-11-23 01:50:34,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:50:34,096 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 01:50:34,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:50:34,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 01:50:34,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 01:50:34,106 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 57 [2024-11-23 01:50:34,107 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 56 transitions, 130 flow. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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) [2024-11-23 01:50:34,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:50:34,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 57 [2024-11-23 01:50:34,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:50:34,360 INFO L124 PetriNetUnfolderBase]: 303/714 cut-off events. [2024-11-23 01:50:34,360 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-23 01:50:34,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1243 conditions, 714 events. 303/714 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3756 event pairs, 224 based on Foata normal form. 4/607 useless extension candidates. Maximal degree in co-relation 1207. Up to 495 conditions per place. [2024-11-23 01:50:34,367 INFO L140 encePairwiseOnDemand]: 52/57 looper letters, 34 selfloop transitions, 2 changer transitions 0/58 dead transitions. [2024-11-23 01:50:34,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 58 transitions, 206 flow [2024-11-23 01:50:34,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 01:50:34,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-23 01:50:34,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 110 transitions. [2024-11-23 01:50:34,373 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6432748538011696 [2024-11-23 01:50:34,373 INFO L175 Difference]: Start difference. First operand has 57 places, 56 transitions, 130 flow. Second operand 3 states and 110 transitions. [2024-11-23 01:50:34,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 58 transitions, 206 flow [2024-11-23 01:50:34,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 58 transitions, 204 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-23 01:50:34,377 INFO L231 Difference]: Finished difference. Result has 59 places, 57 transitions, 144 flow [2024-11-23 01:50:34,378 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=144, PETRI_PLACES=59, PETRI_TRANSITIONS=57} [2024-11-23 01:50:34,378 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 3 predicate places. [2024-11-23 01:50:34,379 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 57 transitions, 144 flow [2024-11-23 01:50:34,379 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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) [2024-11-23 01:50:34,379 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:50:34,379 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-23 01:50:34,380 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-23 01:50:34,380 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-23 01:50:34,381 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:50:34,381 INFO L85 PathProgramCache]: Analyzing trace with hash 2022847967, now seen corresponding path program 1 times [2024-11-23 01:50:34,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:50:34,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448724429] [2024-11-23 01:50:34,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:50:34,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:50:34,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:50:34,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:50:34,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:50:34,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448724429] [2024-11-23 01:50:34,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448724429] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:50:34,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:50:34,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 01:50:34,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564236418] [2024-11-23 01:50:34,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:50:34,546 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 01:50:34,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:50:34,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 01:50:34,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 01:50:34,565 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 57 [2024-11-23 01:50:34,566 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 57 transitions, 144 flow. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 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) [2024-11-23 01:50:34,566 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:50:34,567 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 57 [2024-11-23 01:50:34,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:50:34,931 INFO L124 PetriNetUnfolderBase]: 303/710 cut-off events. [2024-11-23 01:50:34,932 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2024-11-23 01:50:34,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1255 conditions, 710 events. 303/710 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3748 event pairs, 224 based on Foata normal form. 4/607 useless extension candidates. Maximal degree in co-relation 1194. Up to 499 conditions per place. [2024-11-23 01:50:34,937 INFO L140 encePairwiseOnDemand]: 52/57 looper letters, 35 selfloop transitions, 3 changer transitions 0/58 dead transitions. [2024-11-23 01:50:34,938 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 58 transitions, 222 flow [2024-11-23 01:50:34,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 01:50:34,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 01:50:34,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 127 transitions. [2024-11-23 01:50:34,940 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5570175438596491 [2024-11-23 01:50:34,940 INFO L175 Difference]: Start difference. First operand has 59 places, 57 transitions, 144 flow. Second operand 4 states and 127 transitions. [2024-11-23 01:50:34,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 58 transitions, 222 flow [2024-11-23 01:50:34,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 58 transitions, 220 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-23 01:50:34,943 INFO L231 Difference]: Finished difference. Result has 63 places, 58 transitions, 160 flow [2024-11-23 01:50:34,943 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=160, PETRI_PLACES=63, PETRI_TRANSITIONS=58} [2024-11-23 01:50:34,944 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 7 predicate places. [2024-11-23 01:50:34,944 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 58 transitions, 160 flow [2024-11-23 01:50:34,945 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 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) [2024-11-23 01:50:34,945 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:50:34,945 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:50:34,945 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-23 01:50:34,945 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-23 01:50:34,946 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:50:34,946 INFO L85 PathProgramCache]: Analyzing trace with hash -21838542, now seen corresponding path program 1 times [2024-11-23 01:50:34,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:50:34,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808186799] [2024-11-23 01:50:34,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:50:34,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:50:34,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:50:35,097 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:50:35,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:50:35,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808186799] [2024-11-23 01:50:35,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808186799] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:50:35,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [111845902] [2024-11-23 01:50:35,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:50:35,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:50:35,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:50:35,103 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) [2024-11-23 01:50:35,105 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-23 01:50:35,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:50:35,261 INFO L255 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-23 01:50:35,262 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:50:35,306 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:50:35,307 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 01:50:35,342 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:50:35,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [111845902] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 01:50:35,342 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 01:50:35,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-23 01:50:35,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541760340] [2024-11-23 01:50:35,342 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 01:50:35,343 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-23 01:50:35,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:50:35,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-23 01:50:35,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-23 01:50:35,377 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 57 [2024-11-23 01:50:35,378 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 58 transitions, 160 flow. Second operand has 10 states, 10 states have (on average 22.5) internal successors, (225), 10 states have internal predecessors, (225), 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) [2024-11-23 01:50:35,378 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:50:35,378 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 57 [2024-11-23 01:50:35,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:50:36,074 INFO L124 PetriNetUnfolderBase]: 303/726 cut-off events. [2024-11-23 01:50:36,076 INFO L125 PetriNetUnfolderBase]: For 40/40 co-relation queries the response was YES. [2024-11-23 01:50:36,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1313 conditions, 726 events. 303/726 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3854 event pairs, 224 based on Foata normal form. 6/625 useless extension candidates. Maximal degree in co-relation 1213. Up to 489 conditions per place. [2024-11-23 01:50:36,081 INFO L140 encePairwiseOnDemand]: 50/57 looper letters, 38 selfloop transitions, 9 changer transitions 0/66 dead transitions. [2024-11-23 01:50:36,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 66 transitions, 284 flow [2024-11-23 01:50:36,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-23 01:50:36,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-23 01:50:36,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 238 transitions. [2024-11-23 01:50:36,086 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46393762183235865 [2024-11-23 01:50:36,086 INFO L175 Difference]: Start difference. First operand has 63 places, 58 transitions, 160 flow. Second operand 9 states and 238 transitions. [2024-11-23 01:50:36,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 66 transitions, 284 flow [2024-11-23 01:50:36,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 66 transitions, 280 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-23 01:50:36,090 INFO L231 Difference]: Finished difference. Result has 73 places, 62 transitions, 210 flow [2024-11-23 01:50:36,090 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=210, PETRI_PLACES=73, PETRI_TRANSITIONS=62} [2024-11-23 01:50:36,091 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 17 predicate places. [2024-11-23 01:50:36,092 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 62 transitions, 210 flow [2024-11-23 01:50:36,092 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.5) internal successors, (225), 10 states have internal predecessors, (225), 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) [2024-11-23 01:50:36,093 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:50:36,093 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2024-11-23 01:50:36,102 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-23 01:50:36,293 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 [2024-11-23 01:50:36,295 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-23 01:50:36,296 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:50:36,296 INFO L85 PathProgramCache]: Analyzing trace with hash 487992801, now seen corresponding path program 1 times [2024-11-23 01:50:36,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:50:36,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075550883] [2024-11-23 01:50:36,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:50:36,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:50:36,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:50:36,491 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:50:36,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:50:36,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075550883] [2024-11-23 01:50:36,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075550883] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:50:36,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1388628756] [2024-11-23 01:50:36,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:50:36,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:50:36,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:50:36,497 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) [2024-11-23 01:50:36,500 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-23 01:50:36,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:50:36,690 INFO L255 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-23 01:50:36,692 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:50:36,725 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:50:36,726 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 01:50:36,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1388628756] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:50:36,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 01:50:36,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-23 01:50:36,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29924462] [2024-11-23 01:50:36,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:50:36,727 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 01:50:36,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:50:36,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 01:50:36,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-23 01:50:36,756 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 57 [2024-11-23 01:50:36,757 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 62 transitions, 210 flow. Second operand has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 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) [2024-11-23 01:50:36,757 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:50:36,757 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 57 [2024-11-23 01:50:36,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:50:37,230 INFO L124 PetriNetUnfolderBase]: 303/722 cut-off events. [2024-11-23 01:50:37,230 INFO L125 PetriNetUnfolderBase]: For 94/94 co-relation queries the response was YES. [2024-11-23 01:50:37,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1330 conditions, 722 events. 303/722 cut-off events. For 94/94 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3809 event pairs, 224 based on Foata normal form. 4/619 useless extension candidates. Maximal degree in co-relation 1230. Up to 487 conditions per place. [2024-11-23 01:50:37,235 INFO L140 encePairwiseOnDemand]: 52/57 looper letters, 31 selfloop transitions, 8 changer transitions 0/60 dead transitions. [2024-11-23 01:50:37,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 60 transitions, 274 flow [2024-11-23 01:50:37,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 01:50:37,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-23 01:50:37,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 169 transitions. [2024-11-23 01:50:37,236 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49415204678362573 [2024-11-23 01:50:37,236 INFO L175 Difference]: Start difference. First operand has 73 places, 62 transitions, 210 flow. Second operand 6 states and 169 transitions. [2024-11-23 01:50:37,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 60 transitions, 274 flow [2024-11-23 01:50:37,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 60 transitions, 266 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-23 01:50:37,241 INFO L231 Difference]: Finished difference. Result has 73 places, 60 transitions, 204 flow [2024-11-23 01:50:37,242 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=204, PETRI_PLACES=73, PETRI_TRANSITIONS=60} [2024-11-23 01:50:37,242 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 17 predicate places. [2024-11-23 01:50:37,243 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 60 transitions, 204 flow [2024-11-23 01:50:37,243 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 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) [2024-11-23 01:50:37,244 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:50:37,244 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1] [2024-11-23 01:50:37,253 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-23 01:50:37,444 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 [2024-11-23 01:50:37,445 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-23 01:50:37,445 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:50:37,446 INFO L85 PathProgramCache]: Analyzing trace with hash -282722624, now seen corresponding path program 1 times [2024-11-23 01:50:37,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:50:37,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421419195] [2024-11-23 01:50:37,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:50:37,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:50:37,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:50:37,617 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-23 01:50:37,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:50:37,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421419195] [2024-11-23 01:50:37,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421419195] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:50:37,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:50:37,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 01:50:37,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166894090] [2024-11-23 01:50:37,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:50:37,619 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 01:50:37,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:50:37,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 01:50:37,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 01:50:37,630 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 57 [2024-11-23 01:50:37,631 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 60 transitions, 204 flow. Second operand has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 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) [2024-11-23 01:50:37,631 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:50:37,631 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 57 [2024-11-23 01:50:37,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:50:37,861 INFO L124 PetriNetUnfolderBase]: 303/720 cut-off events. [2024-11-23 01:50:37,862 INFO L125 PetriNetUnfolderBase]: For 104/104 co-relation queries the response was YES. [2024-11-23 01:50:37,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1335 conditions, 720 events. 303/720 cut-off events. For 104/104 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3799 event pairs, 224 based on Foata normal form. 2/615 useless extension candidates. Maximal degree in co-relation 1236. Up to 493 conditions per place. [2024-11-23 01:50:37,867 INFO L140 encePairwiseOnDemand]: 52/57 looper letters, 30 selfloop transitions, 9 changer transitions 0/60 dead transitions. [2024-11-23 01:50:37,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 60 transitions, 280 flow [2024-11-23 01:50:37,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 01:50:37,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 01:50:37,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 126 transitions. [2024-11-23 01:50:37,869 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5526315789473685 [2024-11-23 01:50:37,869 INFO L175 Difference]: Start difference. First operand has 73 places, 60 transitions, 204 flow. Second operand 4 states and 126 transitions. [2024-11-23 01:50:37,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 60 transitions, 280 flow [2024-11-23 01:50:37,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 60 transitions, 264 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-11-23 01:50:37,872 INFO L231 Difference]: Finished difference. Result has 70 places, 60 transitions, 212 flow [2024-11-23 01:50:37,872 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=212, PETRI_PLACES=70, PETRI_TRANSITIONS=60} [2024-11-23 01:50:37,873 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 14 predicate places. [2024-11-23 01:50:37,873 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 60 transitions, 212 flow [2024-11-23 01:50:37,873 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 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) [2024-11-23 01:50:37,873 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:50:37,873 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1] [2024-11-23 01:50:37,874 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-23 01:50:37,874 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-23 01:50:37,874 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:50:37,874 INFO L85 PathProgramCache]: Analyzing trace with hash -1113486350, now seen corresponding path program 2 times [2024-11-23 01:50:37,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:50:37,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903863487] [2024-11-23 01:50:37,875 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 01:50:37,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:50:37,924 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-23 01:50:37,924 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 01:50:37,968 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-23 01:50:37,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:50:37,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903863487] [2024-11-23 01:50:37,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903863487] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:50:37,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:50:37,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 01:50:37,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593537033] [2024-11-23 01:50:37,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:50:37,969 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 01:50:37,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:50:37,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 01:50:37,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 01:50:37,979 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 57 [2024-11-23 01:50:37,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 60 transitions, 212 flow. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 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) [2024-11-23 01:50:37,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:50:37,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 57 [2024-11-23 01:50:37,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:50:38,342 INFO L124 PetriNetUnfolderBase]: 303/718 cut-off events. [2024-11-23 01:50:38,343 INFO L125 PetriNetUnfolderBase]: For 132/132 co-relation queries the response was YES. [2024-11-23 01:50:38,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1342 conditions, 718 events. 303/718 cut-off events. For 132/132 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3793 event pairs, 224 based on Foata normal form. 2/615 useless extension candidates. Maximal degree in co-relation 1218. Up to 498 conditions per place. [2024-11-23 01:50:38,347 INFO L140 encePairwiseOnDemand]: 52/57 looper letters, 45 selfloop transitions, 3 changer transitions 0/68 dead transitions. [2024-11-23 01:50:38,348 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 68 transitions, 380 flow [2024-11-23 01:50:38,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 01:50:38,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 01:50:38,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 130 transitions. [2024-11-23 01:50:38,349 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5701754385964912 [2024-11-23 01:50:38,349 INFO L175 Difference]: Start difference. First operand has 70 places, 60 transitions, 212 flow. Second operand 4 states and 130 transitions. [2024-11-23 01:50:38,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 68 transitions, 380 flow [2024-11-23 01:50:38,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 68 transitions, 356 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-23 01:50:38,352 INFO L231 Difference]: Finished difference. Result has 73 places, 61 transitions, 223 flow [2024-11-23 01:50:38,355 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=223, PETRI_PLACES=73, PETRI_TRANSITIONS=61} [2024-11-23 01:50:38,356 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 17 predicate places. [2024-11-23 01:50:38,357 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 61 transitions, 223 flow [2024-11-23 01:50:38,357 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 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) [2024-11-23 01:50:38,358 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:50:38,358 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1] [2024-11-23 01:50:38,358 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-23 01:50:38,359 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-23 01:50:38,359 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:50:38,361 INFO L85 PathProgramCache]: Analyzing trace with hash -1864903058, now seen corresponding path program 1 times [2024-11-23 01:50:38,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:50:38,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176362335] [2024-11-23 01:50:38,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:50:38,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:50:38,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:50:38,688 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 24 proven. 18 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-23 01:50:38,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:50:38,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176362335] [2024-11-23 01:50:38,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176362335] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:50:38,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [391613494] [2024-11-23 01:50:38,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:50:38,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:50:38,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:50:38,692 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) [2024-11-23 01:50:38,693 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-23 01:50:38,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:50:38,947 INFO L255 TraceCheckSpWp]: Trace formula consists of 630 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-23 01:50:38,949 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:50:38,987 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 24 proven. 18 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-23 01:50:38,987 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 01:50:39,091 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 24 proven. 18 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-23 01:50:39,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [391613494] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 01:50:39,091 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 01:50:39,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2024-11-23 01:50:39,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418779154] [2024-11-23 01:50:39,091 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 01:50:39,092 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-23 01:50:39,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:50:39,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-23 01:50:39,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2024-11-23 01:50:39,169 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 57 [2024-11-23 01:50:39,170 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 61 transitions, 223 flow. Second operand has 18 states, 18 states have (on average 22.833333333333332) internal successors, (411), 18 states have internal predecessors, (411), 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) [2024-11-23 01:50:39,170 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:50:39,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 57 [2024-11-23 01:50:39,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:50:40,015 INFO L124 PetriNetUnfolderBase]: 303/766 cut-off events. [2024-11-23 01:50:40,015 INFO L125 PetriNetUnfolderBase]: For 249/249 co-relation queries the response was YES. [2024-11-23 01:50:40,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1511 conditions, 766 events. 303/766 cut-off events. For 249/249 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3841 event pairs, 224 based on Foata normal form. 8/669 useless extension candidates. Maximal degree in co-relation 1359. Up to 489 conditions per place. [2024-11-23 01:50:40,020 INFO L140 encePairwiseOnDemand]: 52/57 looper letters, 50 selfloop transitions, 15 changer transitions 0/84 dead transitions. [2024-11-23 01:50:40,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 84 transitions, 515 flow [2024-11-23 01:50:40,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-23 01:50:40,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-23 01:50:40,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 382 transitions. [2024-11-23 01:50:40,022 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44678362573099417 [2024-11-23 01:50:40,022 INFO L175 Difference]: Start difference. First operand has 73 places, 61 transitions, 223 flow. Second operand 15 states and 382 transitions. [2024-11-23 01:50:40,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 84 transitions, 515 flow [2024-11-23 01:50:40,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 84 transitions, 511 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-23 01:50:40,029 INFO L231 Difference]: Finished difference. Result has 90 places, 70 transitions, 353 flow [2024-11-23 01:50:40,030 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=219, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=353, PETRI_PLACES=90, PETRI_TRANSITIONS=70} [2024-11-23 01:50:40,030 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 34 predicate places. [2024-11-23 01:50:40,031 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 70 transitions, 353 flow [2024-11-23 01:50:40,031 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 22.833333333333332) internal successors, (411), 18 states have internal predecessors, (411), 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) [2024-11-23 01:50:40,031 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:50:40,031 INFO L204 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 8, 8, 2, 1, 1, 1, 1, 1] [2024-11-23 01:50:40,045 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-23 01:50:40,231 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 [2024-11-23 01:50:40,232 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-23 01:50:40,232 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:50:40,233 INFO L85 PathProgramCache]: Analyzing trace with hash -496514834, now seen corresponding path program 2 times [2024-11-23 01:50:40,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:50:40,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016724770] [2024-11-23 01:50:40,233 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 01:50:40,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:50:40,385 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-23 01:50:40,385 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 01:50:41,033 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 52 proven. 112 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-23 01:50:41,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:50:41,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016724770] [2024-11-23 01:50:41,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016724770] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:50:41,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1598061111] [2024-11-23 01:50:41,034 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 01:50:41,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:50:41,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:50:41,036 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) [2024-11-23 01:50:41,038 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-23 01:50:41,407 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-23 01:50:41,407 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 01:50:41,411 INFO L255 TraceCheckSpWp]: Trace formula consists of 1002 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-23 01:50:41,414 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:50:41,487 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 52 proven. 112 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-23 01:50:41,487 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 01:50:41,741 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 52 proven. 112 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-23 01:50:41,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1598061111] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 01:50:41,742 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 01:50:41,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 34 [2024-11-23 01:50:41,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917173000] [2024-11-23 01:50:41,742 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 01:50:41,742 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-23 01:50:41,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:50:41,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-23 01:50:41,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=816, Unknown=0, NotChecked=0, Total=1122 [2024-11-23 01:50:41,905 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 57 [2024-11-23 01:50:41,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 70 transitions, 353 flow. Second operand has 34 states, 34 states have (on average 22.676470588235293) internal successors, (771), 34 states have internal predecessors, (771), 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) [2024-11-23 01:50:41,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:50:41,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 57 [2024-11-23 01:50:41,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:50:43,688 INFO L124 PetriNetUnfolderBase]: 303/862 cut-off events. [2024-11-23 01:50:43,689 INFO L125 PetriNetUnfolderBase]: For 1164/1164 co-relation queries the response was YES. [2024-11-23 01:50:43,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1989 conditions, 862 events. 303/862 cut-off events. For 1164/1164 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3890 event pairs, 224 based on Foata normal form. 16/773 useless extension candidates. Maximal degree in co-relation 1625. Up to 489 conditions per place. [2024-11-23 01:50:43,695 INFO L140 encePairwiseOnDemand]: 52/57 looper letters, 74 selfloop transitions, 31 changer transitions 0/124 dead transitions. [2024-11-23 01:50:43,695 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 124 transitions, 1027 flow [2024-11-23 01:50:43,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-23 01:50:43,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2024-11-23 01:50:43,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 762 transitions. [2024-11-23 01:50:43,698 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4312393887945671 [2024-11-23 01:50:43,698 INFO L175 Difference]: Start difference. First operand has 90 places, 70 transitions, 353 flow. Second operand 31 states and 762 transitions. [2024-11-23 01:50:43,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 124 transitions, 1027 flow [2024-11-23 01:50:43,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 124 transitions, 993 flow, removed 13 selfloop flow, removed 4 redundant places. [2024-11-23 01:50:43,705 INFO L231 Difference]: Finished difference. Result has 125 places, 87 transitions, 625 flow [2024-11-23 01:50:43,705 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=335, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=625, PETRI_PLACES=125, PETRI_TRANSITIONS=87} [2024-11-23 01:50:43,706 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 69 predicate places. [2024-11-23 01:50:43,706 INFO L471 AbstractCegarLoop]: Abstraction has has 125 places, 87 transitions, 625 flow [2024-11-23 01:50:43,707 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 22.676470588235293) internal successors, (771), 34 states have internal predecessors, (771), 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) [2024-11-23 01:50:43,707 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:50:43,707 INFO L204 CegarLoopForPetriNet]: trace histogram [17, 16, 16, 16, 16, 2, 1, 1, 1, 1, 1] [2024-11-23 01:50:43,719 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-23 01:50:43,908 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 [2024-11-23 01:50:43,908 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-23 01:50:43,909 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:50:43,909 INFO L85 PathProgramCache]: Analyzing trace with hash -900665874, now seen corresponding path program 3 times [2024-11-23 01:50:43,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:50:43,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746441138] [2024-11-23 01:50:43,909 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-23 01:50:43,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:50:50,090 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 17 check-sat command(s) [2024-11-23 01:50:50,090 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 01:50:52,292 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 108 proven. 540 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-23 01:50:52,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:50:52,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746441138] [2024-11-23 01:50:52,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746441138] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:50:52,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1436371244] [2024-11-23 01:50:52,293 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-23 01:50:52,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:50:52,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:50:52,295 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) [2024-11-23 01:50:52,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-23 01:50:52,755 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-23 01:50:52,756 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 01:50:52,758 INFO L255 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-23 01:50:52,762 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:50:53,040 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 110 proven. 0 refuted. 0 times theorem prover too weak. 540 trivial. 0 not checked. [2024-11-23 01:50:53,040 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 01:50:53,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1436371244] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:50:53,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 01:50:53,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [33] total 40 [2024-11-23 01:50:53,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476700459] [2024-11-23 01:50:53,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:50:53,042 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-23 01:50:53,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:50:53,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-23 01:50:53,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=314, Invalid=1246, Unknown=0, NotChecked=0, Total=1560 [2024-11-23 01:50:53,082 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 57 [2024-11-23 01:50:53,082 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 87 transitions, 625 flow. Second operand has 9 states, 9 states have (on average 20.444444444444443) internal successors, (184), 9 states have internal predecessors, (184), 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) [2024-11-23 01:50:53,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:50:53,084 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 57 [2024-11-23 01:50:53,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:50:53,993 INFO L124 PetriNetUnfolderBase]: 303/847 cut-off events. [2024-11-23 01:50:53,993 INFO L125 PetriNetUnfolderBase]: For 1344/1344 co-relation queries the response was YES. [2024-11-23 01:50:53,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2023 conditions, 847 events. 303/847 cut-off events. For 1344/1344 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3816 event pairs, 224 based on Foata normal form. 15/757 useless extension candidates. Maximal degree in co-relation 1610. Up to 482 conditions per place. [2024-11-23 01:50:54,000 INFO L140 encePairwiseOnDemand]: 47/57 looper letters, 63 selfloop transitions, 41 changer transitions 0/121 dead transitions. [2024-11-23 01:50:54,000 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 121 transitions, 1252 flow [2024-11-23 01:50:54,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-23 01:50:54,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-23 01:50:54,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 254 transitions. [2024-11-23 01:50:54,002 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.405103668261563 [2024-11-23 01:50:54,002 INFO L175 Difference]: Start difference. First operand has 125 places, 87 transitions, 625 flow. Second operand 11 states and 254 transitions. [2024-11-23 01:50:54,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 121 transitions, 1252 flow [2024-11-23 01:50:54,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 121 transitions, 1200 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-11-23 01:50:54,011 INFO L231 Difference]: Finished difference. Result has 127 places, 120 transitions, 1214 flow [2024-11-23 01:50:54,011 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=589, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1214, PETRI_PLACES=127, PETRI_TRANSITIONS=120} [2024-11-23 01:50:54,012 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 71 predicate places. [2024-11-23 01:50:54,012 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 120 transitions, 1214 flow [2024-11-23 01:50:54,012 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 20.444444444444443) internal successors, (184), 9 states have internal predecessors, (184), 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) [2024-11-23 01:50:54,012 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:50:54,013 INFO L204 CegarLoopForPetriNet]: trace histogram [15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:50:54,023 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-23 01:50:54,213 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 [2024-11-23 01:50:54,214 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-23 01:50:54,214 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:50:54,214 INFO L85 PathProgramCache]: Analyzing trace with hash -463527428, now seen corresponding path program 1 times [2024-11-23 01:50:54,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:50:54,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609324950] [2024-11-23 01:50:54,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:50:54,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:50:54,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:50:54,759 INFO L134 CoverageAnalysis]: Checked inductivity of 541 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 540 trivial. 0 not checked. [2024-11-23 01:50:54,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:50:54,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609324950] [2024-11-23 01:50:54,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609324950] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:50:54,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [931672688] [2024-11-23 01:50:54,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:50:54,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:50:54,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:50:54,763 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) [2024-11-23 01:50:54,765 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-23 01:50:55,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:50:55,450 INFO L255 TraceCheckSpWp]: Trace formula consists of 1669 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-23 01:50:55,457 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:50:56,014 INFO L134 CoverageAnalysis]: Checked inductivity of 541 backedges. 1 proven. 540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:50:56,015 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 01:50:56,904 INFO L134 CoverageAnalysis]: Checked inductivity of 541 backedges. 1 proven. 540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:50:56,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [931672688] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 01:50:56,904 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 01:50:56,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 33, 33] total 64 [2024-11-23 01:50:56,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154687754] [2024-11-23 01:50:56,905 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 01:50:56,905 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2024-11-23 01:50:56,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:50:56,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2024-11-23 01:50:56,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=967, Invalid=3065, Unknown=0, NotChecked=0, Total=4032 [2024-11-23 01:50:57,169 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 57 [2024-11-23 01:50:57,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 120 transitions, 1214 flow. Second operand has 64 states, 64 states have (on average 20.671875) internal successors, (1323), 64 states have internal predecessors, (1323), 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) [2024-11-23 01:50:57,171 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:50:57,171 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 57 [2024-11-23 01:50:57,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:51:03,827 INFO L124 PetriNetUnfolderBase]: 319/1197 cut-off events. [2024-11-23 01:51:03,827 INFO L125 PetriNetUnfolderBase]: For 9765/9765 co-relation queries the response was YES. [2024-11-23 01:51:03,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4187 conditions, 1197 events. 319/1197 cut-off events. For 9765/9765 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3873 event pairs, 224 based on Foata normal form. 46/1138 useless extension candidates. Maximal degree in co-relation 3293. Up to 487 conditions per place. [2024-11-23 01:51:03,838 INFO L140 encePairwiseOnDemand]: 48/57 looper letters, 152 selfloop transitions, 216 changer transitions 0/385 dead transitions. [2024-11-23 01:51:03,838 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 385 transitions, 5740 flow [2024-11-23 01:51:03,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 182 states. [2024-11-23 01:51:03,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2024-11-23 01:51:03,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 3872 transitions. [2024-11-23 01:51:03,850 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3732407942934259 [2024-11-23 01:51:03,850 INFO L175 Difference]: Start difference. First operand has 127 places, 120 transitions, 1214 flow. Second operand 182 states and 3872 transitions. [2024-11-23 01:51:03,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 385 transitions, 5740 flow [2024-11-23 01:51:03,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 385 transitions, 5718 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-11-23 01:51:03,879 INFO L231 Difference]: Finished difference. Result has 351 places, 274 transitions, 4082 flow [2024-11-23 01:51:03,881 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=1198, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=182, PETRI_FLOW=4082, PETRI_PLACES=351, PETRI_TRANSITIONS=274} [2024-11-23 01:51:03,882 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 295 predicate places. [2024-11-23 01:51:03,882 INFO L471 AbstractCegarLoop]: Abstraction has has 351 places, 274 transitions, 4082 flow [2024-11-23 01:51:03,884 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 20.671875) internal successors, (1323), 64 states have internal predecessors, (1323), 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) [2024-11-23 01:51:03,884 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:51:03,884 INFO L204 CegarLoopForPetriNet]: trace histogram [32, 32, 31, 31, 31, 2, 1, 1, 1, 1, 1] [2024-11-23 01:51:03,897 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-23 01:51:04,088 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 [2024-11-23 01:51:04,089 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-23 01:51:04,089 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:51:04,089 INFO L85 PathProgramCache]: Analyzing trace with hash -155885776, now seen corresponding path program 1 times [2024-11-23 01:51:04,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:51:04,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231872255] [2024-11-23 01:51:04,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:51:04,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms