./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/goblint-regression/05-lval_ls_02-idx_nr.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version c7c6ca5d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/goblint-regression/05-lval_ls_02-idx_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 6a6d4c6573ed55a0a96a38de6d1424f0a577970a6c88cea50d5cb9a315d791fd --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-09 15:03:00,243 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 15:03:00,319 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-09 15:03:00,325 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 15:03:00,326 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 15:03:00,349 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 15:03:00,351 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 15:03:00,351 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 15:03:00,352 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 15:03:00,353 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 15:03:00,353 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 15:03:00,354 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 15:03:00,354 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 15:03:00,354 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 15:03:00,355 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 15:03:00,356 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 15:03:00,356 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 15:03:00,356 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 15:03:00,357 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 15:03:00,357 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 15:03:00,359 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 15:03:00,360 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 15:03:00,360 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 15:03:00,360 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 15:03:00,360 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 15:03:00,361 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-09 15:03:00,361 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 15:03:00,361 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 15:03:00,361 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 15:03:00,361 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 15:03:00,362 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 15:03:00,362 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 15:03:00,362 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 15:03:00,362 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 15:03:00,362 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 15:03:00,362 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 15:03:00,362 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 15:03:00,363 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 15:03:00,363 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 15:03:00,363 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 15:03:00,363 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 15:03:00,363 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 15:03:00,364 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 15:03:00,364 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 15:03:00,364 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6a6d4c6573ed55a0a96a38de6d1424f0a577970a6c88cea50d5cb9a315d791fd [2024-11-09 15:03:00,596 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 15:03:00,618 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 15:03:00,623 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 15:03:00,624 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 15:03:00,627 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 15:03:00,628 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/05-lval_ls_02-idx_nr.i [2024-11-09 15:03:02,150 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 15:03:02,379 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 15:03:02,380 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/05-lval_ls_02-idx_nr.i [2024-11-09 15:03:02,399 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e373acf28/85e4c02627ea4622b534e4f51cab1c9e/FLAGf8e0a4ec6 [2024-11-09 15:03:02,414 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e373acf28/85e4c02627ea4622b534e4f51cab1c9e [2024-11-09 15:03:02,416 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 15:03:02,418 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 15:03:02,419 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 15:03:02,419 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 15:03:02,424 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 15:03:02,425 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 03:03:02" (1/1) ... [2024-11-09 15:03:02,426 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16c265af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:03:02, skipping insertion in model container [2024-11-09 15:03:02,426 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 03:03:02" (1/1) ... [2024-11-09 15:03:02,475 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 15:03:02,769 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 15:03:02,810 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 15:03:02,867 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 15:03:02,907 INFO L204 MainTranslator]: Completed translation [2024-11-09 15:03:02,908 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:03:02 WrapperNode [2024-11-09 15:03:02,908 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 15:03:02,909 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 15:03:02,909 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 15:03:02,909 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 15:03:02,915 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:03:02" (1/1) ... [2024-11-09 15:03:02,932 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:03:02" (1/1) ... [2024-11-09 15:03:02,979 INFO L138 Inliner]: procedures = 162, calls = 58, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 89 [2024-11-09 15:03:02,980 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 15:03:02,980 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 15:03:02,980 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 15:03:02,980 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 15:03:02,995 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:03:02" (1/1) ... [2024-11-09 15:03:02,995 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:03:02" (1/1) ... [2024-11-09 15:03:02,997 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:03:02" (1/1) ... [2024-11-09 15:03:03,008 INFO L175 MemorySlicer]: Split 50 memory accesses to 1 slices as follows [50]. 100 percent of accesses are in the largest equivalence class. The 50 initializations are split as follows [50]. The 0 writes are split as follows [0]. [2024-11-09 15:03:03,008 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:03:02" (1/1) ... [2024-11-09 15:03:03,008 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:03:02" (1/1) ... [2024-11-09 15:03:03,012 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:03:02" (1/1) ... [2024-11-09 15:03:03,015 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:03:02" (1/1) ... [2024-11-09 15:03:03,016 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:03:02" (1/1) ... [2024-11-09 15:03:03,017 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:03:02" (1/1) ... [2024-11-09 15:03:03,018 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 15:03:03,019 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 15:03:03,019 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 15:03:03,019 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 15:03:03,020 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:03:02" (1/1) ... [2024-11-09 15:03:03,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 15:03:03,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:03:03,057 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-09 15:03:03,062 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-09 15:03:03,099 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-09 15:03:03,099 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 15:03:03,099 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-09 15:03:03,099 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-09 15:03:03,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 15:03:03,100 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-09 15:03:03,100 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 15:03:03,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 15:03:03,101 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-09 15:03:03,195 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 15:03:03,197 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 15:03:03,355 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 15:03:03,355 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 15:03:03,598 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 15:03:03,598 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-09 15:03:03,598 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 03:03:03 BoogieIcfgContainer [2024-11-09 15:03:03,598 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 15:03:03,602 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 15:03:03,602 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 15:03:03,605 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 15:03:03,605 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 03:03:02" (1/3) ... [2024-11-09 15:03:03,606 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77d540a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 03:03:03, skipping insertion in model container [2024-11-09 15:03:03,606 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:03:02" (2/3) ... [2024-11-09 15:03:03,606 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77d540a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 03:03:03, skipping insertion in model container [2024-11-09 15:03:03,606 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 03:03:03" (3/3) ... [2024-11-09 15:03:03,607 INFO L112 eAbstractionObserver]: Analyzing ICFG 05-lval_ls_02-idx_nr.i [2024-11-09 15:03:03,622 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 15:03:03,623 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2024-11-09 15:03:03,623 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 15:03:03,671 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-09 15:03:03,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 30 places, 27 transitions, 58 flow [2024-11-09 15:03:03,726 INFO L124 PetriNetUnfolderBase]: 1/26 cut-off events. [2024-11-09 15:03:03,727 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 15:03:03,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30 conditions, 26 events. 1/26 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 41 event pairs, 0 based on Foata normal form. 0/19 useless extension candidates. Maximal degree in co-relation 7. Up to 2 conditions per place. [2024-11-09 15:03:03,729 INFO L82 GeneralOperation]: Start removeDead. Operand has 30 places, 27 transitions, 58 flow [2024-11-09 15:03:03,732 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 29 places, 26 transitions, 55 flow [2024-11-09 15:03:03,742 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 15:03:03,747 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;@1c8a6eba, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 15:03:03,749 INFO L334 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-11-09 15:03:03,752 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 15:03:03,752 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-09 15:03:03,753 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 15:03:03,753 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:03:03,754 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-09 15:03:03,754 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-09 15:03:03,758 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:03:03,758 INFO L85 PathProgramCache]: Analyzing trace with hash 260202, now seen corresponding path program 1 times [2024-11-09 15:03:03,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:03:03,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303136189] [2024-11-09 15:03:03,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:03:03,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:03:03,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:03:04,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:03:04,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:03:04,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303136189] [2024-11-09 15:03:04,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303136189] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:03:04,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:03:04,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 15:03:04,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330175872] [2024-11-09 15:03:04,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:03:04,081 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:03:04,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:03:04,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:03:04,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:03:04,169 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 27 [2024-11-09 15:03:04,172 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 26 transitions, 55 flow. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:03:04,172 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:03:04,172 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 27 [2024-11-09 15:03:04,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:03:04,259 INFO L124 PetriNetUnfolderBase]: 31/104 cut-off events. [2024-11-09 15:03:04,260 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 15:03:04,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 189 conditions, 104 events. 31/104 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 341 event pairs, 30 based on Foata normal form. 1/94 useless extension candidates. Maximal degree in co-relation 164. Up to 79 conditions per place. [2024-11-09 15:03:04,262 INFO L140 encePairwiseOnDemand]: 21/27 looper letters, 17 selfloop transitions, 3 changer transitions 0/28 dead transitions. [2024-11-09 15:03:04,263 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 28 transitions, 99 flow [2024-11-09 15:03:04,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:03:04,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:03:04,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 59 transitions. [2024-11-09 15:03:04,273 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5462962962962963 [2024-11-09 15:03:04,275 INFO L175 Difference]: Start difference. First operand has 29 places, 26 transitions, 55 flow. Second operand 4 states and 59 transitions. [2024-11-09 15:03:04,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 28 transitions, 99 flow [2024-11-09 15:03:04,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 28 transitions, 98 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 15:03:04,279 INFO L231 Difference]: Finished difference. Result has 33 places, 28 transitions, 78 flow [2024-11-09 15:03:04,281 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=78, PETRI_PLACES=33, PETRI_TRANSITIONS=28} [2024-11-09 15:03:04,284 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 4 predicate places. [2024-11-09 15:03:04,284 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 28 transitions, 78 flow [2024-11-09 15:03:04,285 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:03:04,285 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:03:04,285 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-09 15:03:04,285 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 15:03:04,285 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-09 15:03:04,286 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:03:04,286 INFO L85 PathProgramCache]: Analyzing trace with hash -838004296, now seen corresponding path program 1 times [2024-11-09 15:03:04,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:03:04,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347207569] [2024-11-09 15:03:04,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:03:04,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:03:04,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:03:04,380 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:03:04,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:03:04,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347207569] [2024-11-09 15:03:04,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347207569] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:03:04,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1020576704] [2024-11-09 15:03:04,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:03:04,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:03:04,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:03:04,383 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:03:04,385 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 15:03:04,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:03:04,443 INFO L255 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 15:03:04,446 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:03:04,486 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:03:04,487 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 15:03:04,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1020576704] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:03:04,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 15:03:04,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-09 15:03:04,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039153123] [2024-11-09 15:03:04,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:03:04,489 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 15:03:04,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:03:04,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 15:03:04,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-09 15:03:04,498 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 27 [2024-11-09 15:03:04,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 28 transitions, 78 flow. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:03:04,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:03:04,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 27 [2024-11-09 15:03:04,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:03:04,568 INFO L124 PetriNetUnfolderBase]: 31/103 cut-off events. [2024-11-09 15:03:04,569 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-09 15:03:04,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 198 conditions, 103 events. 31/103 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 338 event pairs, 30 based on Foata normal form. 1/93 useless extension candidates. Maximal degree in co-relation 181. Up to 74 conditions per place. [2024-11-09 15:03:04,570 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 13 selfloop transitions, 6 changer transitions 0/27 dead transitions. [2024-11-09 15:03:04,570 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 27 transitions, 112 flow [2024-11-09 15:03:04,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 15:03:04,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 15:03:04,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 74 transitions. [2024-11-09 15:03:04,572 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4567901234567901 [2024-11-09 15:03:04,572 INFO L175 Difference]: Start difference. First operand has 33 places, 28 transitions, 78 flow. Second operand 6 states and 74 transitions. [2024-11-09 15:03:04,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 27 transitions, 112 flow [2024-11-09 15:03:04,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 27 transitions, 110 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 15:03:04,573 INFO L231 Difference]: Finished difference. Result has 36 places, 27 transitions, 84 flow [2024-11-09 15:03:04,573 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=84, PETRI_PLACES=36, PETRI_TRANSITIONS=27} [2024-11-09 15:03:04,574 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 7 predicate places. [2024-11-09 15:03:04,574 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 27 transitions, 84 flow [2024-11-09 15:03:04,574 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:03:04,575 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:03:04,575 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-09 15:03:04,589 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-09 15:03:04,775 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:03:04,776 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-09 15:03:04,777 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:03:04,777 INFO L85 PathProgramCache]: Analyzing trace with hash -208329146, now seen corresponding path program 1 times [2024-11-09 15:03:04,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:03:04,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773973083] [2024-11-09 15:03:04,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:03:04,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:03:04,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:03:04,815 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:03:04,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:03:04,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773973083] [2024-11-09 15:03:04,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773973083] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:03:04,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:03:04,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 15:03:04,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743724823] [2024-11-09 15:03:04,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:03:04,817 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 15:03:04,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:03:04,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 15:03:04,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 15:03:04,821 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 27 [2024-11-09 15:03:04,821 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 27 transitions, 84 flow. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:03:04,821 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:03:04,821 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 27 [2024-11-09 15:03:04,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:03:04,855 INFO L124 PetriNetUnfolderBase]: 31/102 cut-off events. [2024-11-09 15:03:04,856 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-09 15:03:04,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 200 conditions, 102 events. 31/102 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 339 event pairs, 30 based on Foata normal form. 1/93 useless extension candidates. Maximal degree in co-relation 177. Up to 77 conditions per place. [2024-11-09 15:03:04,857 INFO L140 encePairwiseOnDemand]: 24/27 looper letters, 14 selfloop transitions, 4 changer transitions 0/26 dead transitions. [2024-11-09 15:03:04,857 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 26 transitions, 116 flow [2024-11-09 15:03:04,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 15:03:04,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 15:03:04,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 44 transitions. [2024-11-09 15:03:04,858 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5432098765432098 [2024-11-09 15:03:04,858 INFO L175 Difference]: Start difference. First operand has 36 places, 27 transitions, 84 flow. Second operand 3 states and 44 transitions. [2024-11-09 15:03:04,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 26 transitions, 116 flow [2024-11-09 15:03:04,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 26 transitions, 94 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-11-09 15:03:04,859 INFO L231 Difference]: Finished difference. Result has 31 places, 26 transitions, 66 flow [2024-11-09 15:03:04,860 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=66, PETRI_PLACES=31, PETRI_TRANSITIONS=26} [2024-11-09 15:03:04,860 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 2 predicate places. [2024-11-09 15:03:04,860 INFO L471 AbstractCegarLoop]: Abstraction has has 31 places, 26 transitions, 66 flow [2024-11-09 15:03:04,860 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:03:04,861 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:03:04,861 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:03:04,861 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 15:03:04,861 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-09 15:03:04,861 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:03:04,861 INFO L85 PathProgramCache]: Analyzing trace with hash -65683500, now seen corresponding path program 1 times [2024-11-09 15:03:04,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:03:04,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147430887] [2024-11-09 15:03:04,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:03:04,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:03:04,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:03:04,908 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:03:04,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:03:04,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2147430887] [2024-11-09 15:03:04,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2147430887] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:03:04,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1788371186] [2024-11-09 15:03:04,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:03:04,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:03:04,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:03:04,911 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:03:04,912 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 15:03:04,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:03:04,965 INFO L255 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 15:03:04,966 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:03:04,982 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:03:04,983 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:03:05,006 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:03:05,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1788371186] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:03:05,007 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:03:05,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-11-09 15:03:05,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848558681] [2024-11-09 15:03:05,008 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:03:05,008 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 15:03:05,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:03:05,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 15:03:05,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-09 15:03:05,018 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 27 [2024-11-09 15:03:05,019 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 26 transitions, 66 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:03:05,019 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:03:05,019 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 27 [2024-11-09 15:03:05,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:03:05,101 INFO L124 PetriNetUnfolderBase]: 31/106 cut-off events. [2024-11-09 15:03:05,102 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2024-11-09 15:03:05,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 203 conditions, 106 events. 31/106 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 336 event pairs, 30 based on Foata normal form. 2/99 useless extension candidates. Maximal degree in co-relation 170. Up to 75 conditions per place. [2024-11-09 15:03:05,104 INFO L140 encePairwiseOnDemand]: 23/27 looper letters, 14 selfloop transitions, 7 changer transitions 0/29 dead transitions. [2024-11-09 15:03:05,105 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 29 transitions, 123 flow [2024-11-09 15:03:05,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 15:03:05,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-09 15:03:05,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 86 transitions. [2024-11-09 15:03:05,107 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.455026455026455 [2024-11-09 15:03:05,107 INFO L175 Difference]: Start difference. First operand has 31 places, 26 transitions, 66 flow. Second operand 7 states and 86 transitions. [2024-11-09 15:03:05,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 29 transitions, 123 flow [2024-11-09 15:03:05,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 29 transitions, 109 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 15:03:05,109 INFO L231 Difference]: Finished difference. Result has 37 places, 29 transitions, 92 flow [2024-11-09 15:03:05,109 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=92, PETRI_PLACES=37, PETRI_TRANSITIONS=29} [2024-11-09 15:03:05,109 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 8 predicate places. [2024-11-09 15:03:05,110 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 29 transitions, 92 flow [2024-11-09 15:03:05,110 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:03:05,110 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:03:05,110 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:03:05,126 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-09 15:03:05,311 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-09 15:03:05,311 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-09 15:03:05,312 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:03:05,312 INFO L85 PathProgramCache]: Analyzing trace with hash -271154540, now seen corresponding path program 2 times [2024-11-09 15:03:05,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:03:05,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517551506] [2024-11-09 15:03:05,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:03:05,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:03:05,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:03:05,409 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 15:03:05,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:03:05,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517551506] [2024-11-09 15:03:05,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517551506] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:03:05,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:03:05,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 15:03:05,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201052409] [2024-11-09 15:03:05,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:03:05,412 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:03:05,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:03:05,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:03:05,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:03:05,419 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 27 [2024-11-09 15:03:05,419 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 29 transitions, 92 flow. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:03:05,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:03:05,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 27 [2024-11-09 15:03:05,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:03:05,560 INFO L124 PetriNetUnfolderBase]: 37/115 cut-off events. [2024-11-09 15:03:05,561 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2024-11-09 15:03:05,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 234 conditions, 115 events. 37/115 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 349 event pairs, 16 based on Foata normal form. 6/114 useless extension candidates. Maximal degree in co-relation 196. Up to 67 conditions per place. [2024-11-09 15:03:05,567 INFO L140 encePairwiseOnDemand]: 21/27 looper letters, 26 selfloop transitions, 4 changer transitions 6/42 dead transitions. [2024-11-09 15:03:05,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 42 transitions, 190 flow [2024-11-09 15:03:05,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 15:03:05,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 15:03:05,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 80 transitions. [2024-11-09 15:03:05,568 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5925925925925926 [2024-11-09 15:03:05,568 INFO L175 Difference]: Start difference. First operand has 37 places, 29 transitions, 92 flow. Second operand 5 states and 80 transitions. [2024-11-09 15:03:05,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 42 transitions, 190 flow [2024-11-09 15:03:05,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 42 transitions, 186 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 15:03:05,570 INFO L231 Difference]: Finished difference. Result has 42 places, 30 transitions, 113 flow [2024-11-09 15:03:05,570 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=113, PETRI_PLACES=42, PETRI_TRANSITIONS=30} [2024-11-09 15:03:05,571 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 13 predicate places. [2024-11-09 15:03:05,571 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 30 transitions, 113 flow [2024-11-09 15:03:05,571 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:03:05,571 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:03:05,576 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:03:05,576 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 15:03:05,577 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-09 15:03:05,577 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:03:05,577 INFO L85 PathProgramCache]: Analyzing trace with hash -270890394, now seen corresponding path program 1 times [2024-11-09 15:03:05,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:03:05,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727885399] [2024-11-09 15:03:05,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:03:05,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:03:05,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:03:05,707 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 15:03:05,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:03:05,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727885399] [2024-11-09 15:03:05,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727885399] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:03:05,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:03:05,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 15:03:05,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943142957] [2024-11-09 15:03:05,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:03:05,709 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:03:05,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:03:05,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:03:05,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:03:05,716 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 27 [2024-11-09 15:03:05,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 30 transitions, 113 flow. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:03:05,717 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:03:05,717 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 27 [2024-11-09 15:03:05,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:03:05,783 INFO L124 PetriNetUnfolderBase]: 24/96 cut-off events. [2024-11-09 15:03:05,784 INFO L125 PetriNetUnfolderBase]: For 31/31 co-relation queries the response was YES. [2024-11-09 15:03:05,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 229 conditions, 96 events. 24/96 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 295 event pairs, 11 based on Foata normal form. 14/109 useless extension candidates. Maximal degree in co-relation 202. Up to 45 conditions per place. [2024-11-09 15:03:05,786 INFO L140 encePairwiseOnDemand]: 21/27 looper letters, 26 selfloop transitions, 4 changer transitions 4/40 dead transitions. [2024-11-09 15:03:05,786 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 40 transitions, 208 flow [2024-11-09 15:03:05,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 15:03:05,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 15:03:05,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 78 transitions. [2024-11-09 15:03:05,789 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5777777777777777 [2024-11-09 15:03:05,789 INFO L175 Difference]: Start difference. First operand has 42 places, 30 transitions, 113 flow. Second operand 5 states and 78 transitions. [2024-11-09 15:03:05,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 40 transitions, 208 flow [2024-11-09 15:03:05,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 40 transitions, 200 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-09 15:03:05,792 INFO L231 Difference]: Finished difference. Result has 46 places, 31 transitions, 131 flow [2024-11-09 15:03:05,792 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=131, PETRI_PLACES=46, PETRI_TRANSITIONS=31} [2024-11-09 15:03:05,793 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 17 predicate places. [2024-11-09 15:03:05,793 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 31 transitions, 131 flow [2024-11-09 15:03:05,794 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:03:05,794 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:03:05,794 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:03:05,794 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 15:03:05,794 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-09 15:03:05,795 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:03:05,795 INFO L85 PathProgramCache]: Analyzing trace with hash -558898479, now seen corresponding path program 1 times [2024-11-09 15:03:05,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:03:05,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481383586] [2024-11-09 15:03:05,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:03:05,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:03:05,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:03:05,878 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 15:03:05,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:03:05,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481383586] [2024-11-09 15:03:05,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481383586] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:03:05,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:03:05,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 15:03:05,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16648782] [2024-11-09 15:03:05,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:03:05,880 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 15:03:05,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:03:05,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 15:03:05,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 15:03:05,880 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 27 [2024-11-09 15:03:05,880 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 31 transitions, 131 flow. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:03:05,880 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:03:05,881 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 27 [2024-11-09 15:03:05,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:03:05,910 INFO L124 PetriNetUnfolderBase]: 10/62 cut-off events. [2024-11-09 15:03:05,910 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2024-11-09 15:03:05,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 165 conditions, 62 events. 10/62 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 129 event pairs, 2 based on Foata normal form. 6/67 useless extension candidates. Maximal degree in co-relation 142. Up to 24 conditions per place. [2024-11-09 15:03:05,911 INFO L140 encePairwiseOnDemand]: 23/27 looper letters, 22 selfloop transitions, 4 changer transitions 0/34 dead transitions. [2024-11-09 15:03:05,911 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 34 transitions, 189 flow [2024-11-09 15:03:05,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 15:03:05,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 15:03:05,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 54 transitions. [2024-11-09 15:03:05,912 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-09 15:03:05,912 INFO L175 Difference]: Start difference. First operand has 46 places, 31 transitions, 131 flow. Second operand 3 states and 54 transitions. [2024-11-09 15:03:05,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 34 transitions, 189 flow [2024-11-09 15:03:05,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 34 transitions, 182 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-09 15:03:05,914 INFO L231 Difference]: Finished difference. Result has 45 places, 31 transitions, 132 flow [2024-11-09 15:03:05,914 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=132, PETRI_PLACES=45, PETRI_TRANSITIONS=31} [2024-11-09 15:03:05,914 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 16 predicate places. [2024-11-09 15:03:05,914 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 31 transitions, 132 flow [2024-11-09 15:03:05,914 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:03:05,914 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:03:05,914 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:03:05,915 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 15:03:05,915 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-09 15:03:05,915 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:03:05,915 INFO L85 PathProgramCache]: Analyzing trace with hash -2133377836, now seen corresponding path program 1 times [2024-11-09 15:03:05,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:03:05,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755319746] [2024-11-09 15:03:05,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:03:05,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:03:05,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:03:06,022 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:03:06,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:03:06,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755319746] [2024-11-09 15:03:06,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755319746] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:03:06,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1255775537] [2024-11-09 15:03:06,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:03:06,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:03:06,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:03:06,024 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:03:06,026 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 15:03:06,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:03:06,083 INFO L255 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 15:03:06,084 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:03:06,114 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:03:06,114 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:03:06,196 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:03:06,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1255775537] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:03:06,196 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:03:06,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2024-11-09 15:03:06,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935364703] [2024-11-09 15:03:06,197 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:03:06,197 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-09 15:03:06,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:03:06,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-09 15:03:06,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2024-11-09 15:03:06,214 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 27 [2024-11-09 15:03:06,215 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 31 transitions, 132 flow. Second operand has 18 states, 18 states have (on average 10.5) internal successors, (189), 18 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:03:06,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:03:06,215 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 27 [2024-11-09 15:03:06,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:03:06,326 INFO L124 PetriNetUnfolderBase]: 10/74 cut-off events. [2024-11-09 15:03:06,326 INFO L125 PetriNetUnfolderBase]: For 44/44 co-relation queries the response was YES. [2024-11-09 15:03:06,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 203 conditions, 74 events. 10/74 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 129 event pairs, 9 based on Foata normal form. 4/77 useless extension candidates. Maximal degree in co-relation 145. Up to 37 conditions per place. [2024-11-09 15:03:06,327 INFO L140 encePairwiseOnDemand]: 23/27 looper letters, 16 selfloop transitions, 15 changer transitions 0/39 dead transitions. [2024-11-09 15:03:06,327 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 39 transitions, 242 flow [2024-11-09 15:03:06,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-09 15:03:06,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-09 15:03:06,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 168 transitions. [2024-11-09 15:03:06,329 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4148148148148148 [2024-11-09 15:03:06,329 INFO L175 Difference]: Start difference. First operand has 45 places, 31 transitions, 132 flow. Second operand 15 states and 168 transitions. [2024-11-09 15:03:06,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 39 transitions, 242 flow [2024-11-09 15:03:06,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 39 transitions, 238 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 15:03:06,333 INFO L231 Difference]: Finished difference. Result has 62 places, 39 transitions, 225 flow [2024-11-09 15:03:06,334 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=225, PETRI_PLACES=62, PETRI_TRANSITIONS=39} [2024-11-09 15:03:06,334 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 33 predicate places. [2024-11-09 15:03:06,335 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 39 transitions, 225 flow [2024-11-09 15:03:06,335 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 10.5) internal successors, (189), 18 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:03:06,335 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:03:06,336 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:03:06,349 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 15:03:06,539 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:03:06,540 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-09 15:03:06,541 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:03:06,543 INFO L85 PathProgramCache]: Analyzing trace with hash -479759788, now seen corresponding path program 2 times [2024-11-09 15:03:06,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:03:06,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512870881] [2024-11-09 15:03:06,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:03:06,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:03:06,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:03:06,777 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:03:06,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:03:06,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512870881] [2024-11-09 15:03:06,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512870881] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:03:06,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [783709059] [2024-11-09 15:03:06,778 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 15:03:06,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:03:06,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:03:06,780 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:03:06,781 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 15:03:06,836 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-09 15:03:06,837 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 15:03:06,837 INFO L255 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 15:03:06,838 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:03:06,884 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-09 15:03:06,884 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 15:03:06,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [783709059] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:03:06,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 15:03:06,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [16] total 20 [2024-11-09 15:03:06,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617050573] [2024-11-09 15:03:06,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:03:06,885 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 15:03:06,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:03:06,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 15:03:06,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2024-11-09 15:03:06,895 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 27 [2024-11-09 15:03:06,896 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 39 transitions, 225 flow. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:03:06,896 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:03:06,896 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 27 [2024-11-09 15:03:06,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:03:06,961 INFO L124 PetriNetUnfolderBase]: 13/73 cut-off events. [2024-11-09 15:03:06,961 INFO L125 PetriNetUnfolderBase]: For 88/88 co-relation queries the response was YES. [2024-11-09 15:03:06,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 230 conditions, 73 events. 13/73 cut-off events. For 88/88 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 110 event pairs, 6 based on Foata normal form. 4/76 useless extension candidates. Maximal degree in co-relation 168. Up to 41 conditions per place. [2024-11-09 15:03:06,962 INFO L140 encePairwiseOnDemand]: 20/27 looper letters, 30 selfloop transitions, 7 changer transitions 0/40 dead transitions. [2024-11-09 15:03:06,962 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 40 transitions, 297 flow [2024-11-09 15:03:06,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 15:03:06,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 15:03:06,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 54 transitions. [2024-11-09 15:03:06,963 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-11-09 15:03:06,963 INFO L175 Difference]: Start difference. First operand has 62 places, 39 transitions, 225 flow. Second operand 5 states and 54 transitions. [2024-11-09 15:03:06,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 40 transitions, 297 flow [2024-11-09 15:03:06,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 40 transitions, 287 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-11-09 15:03:06,966 INFO L231 Difference]: Finished difference. Result has 60 places, 37 transitions, 221 flow [2024-11-09 15:03:06,966 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=221, PETRI_PLACES=60, PETRI_TRANSITIONS=37} [2024-11-09 15:03:06,966 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 31 predicate places. [2024-11-09 15:03:06,966 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 37 transitions, 221 flow [2024-11-09 15:03:06,967 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:03:06,967 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:03:06,967 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:03:06,979 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 15:03:07,167 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:03:07,168 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-09 15:03:07,168 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:03:07,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1655183705, now seen corresponding path program 1 times [2024-11-09 15:03:07,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:03:07,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577405723] [2024-11-09 15:03:07,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:03:07,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:03:07,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:03:07,259 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-09 15:03:07,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:03:07,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577405723] [2024-11-09 15:03:07,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577405723] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:03:07,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:03:07,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 15:03:07,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841674335] [2024-11-09 15:03:07,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:03:07,260 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 15:03:07,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:03:07,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 15:03:07,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-09 15:03:07,270 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 27 [2024-11-09 15:03:07,270 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 37 transitions, 221 flow. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:03:07,270 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:03:07,270 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 27 [2024-11-09 15:03:07,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:03:07,327 INFO L124 PetriNetUnfolderBase]: 11/69 cut-off events. [2024-11-09 15:03:07,328 INFO L125 PetriNetUnfolderBase]: For 105/105 co-relation queries the response was YES. [2024-11-09 15:03:07,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 224 conditions, 69 events. 11/69 cut-off events. For 105/105 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 89 event pairs, 5 based on Foata normal form. 2/70 useless extension candidates. Maximal degree in co-relation 166. Up to 23 conditions per place. [2024-11-09 15:03:07,328 INFO L140 encePairwiseOnDemand]: 21/27 looper letters, 26 selfloop transitions, 3 changer transitions 8/41 dead transitions. [2024-11-09 15:03:07,328 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 41 transitions, 303 flow [2024-11-09 15:03:07,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 15:03:07,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-09 15:03:07,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 74 transitions. [2024-11-09 15:03:07,330 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3915343915343915 [2024-11-09 15:03:07,330 INFO L175 Difference]: Start difference. First operand has 60 places, 37 transitions, 221 flow. Second operand 7 states and 74 transitions. [2024-11-09 15:03:07,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 41 transitions, 303 flow [2024-11-09 15:03:07,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 41 transitions, 287 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-09 15:03:07,334 INFO L231 Difference]: Finished difference. Result has 60 places, 31 transitions, 186 flow [2024-11-09 15:03:07,334 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=201, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=186, PETRI_PLACES=60, PETRI_TRANSITIONS=31} [2024-11-09 15:03:07,335 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 31 predicate places. [2024-11-09 15:03:07,335 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 31 transitions, 186 flow [2024-11-09 15:03:07,336 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:03:07,336 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:03:07,336 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:03:07,336 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-09 15:03:07,336 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-09 15:03:07,336 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:03:07,336 INFO L85 PathProgramCache]: Analyzing trace with hash -800867086, now seen corresponding path program 1 times [2024-11-09 15:03:07,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:03:07,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931990347] [2024-11-09 15:03:07,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:03:07,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:03:07,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:03:07,431 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-09 15:03:07,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:03:07,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931990347] [2024-11-09 15:03:07,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931990347] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:03:07,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:03:07,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 15:03:07,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740381572] [2024-11-09 15:03:07,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:03:07,432 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 15:03:07,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:03:07,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 15:03:07,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-09 15:03:07,444 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 27 [2024-11-09 15:03:07,444 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 31 transitions, 186 flow. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:03:07,444 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:03:07,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 27 [2024-11-09 15:03:07,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:03:07,484 INFO L124 PetriNetUnfolderBase]: 8/53 cut-off events. [2024-11-09 15:03:07,484 INFO L125 PetriNetUnfolderBase]: For 82/82 co-relation queries the response was YES. [2024-11-09 15:03:07,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177 conditions, 53 events. 8/53 cut-off events. For 82/82 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 30 event pairs, 2 based on Foata normal form. 2/54 useless extension candidates. Maximal degree in co-relation 162. Up to 23 conditions per place. [2024-11-09 15:03:07,485 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 0 selfloop transitions, 0 changer transitions 34/34 dead transitions. [2024-11-09 15:03:07,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 34 transitions, 251 flow [2024-11-09 15:03:07,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 15:03:07,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 15:03:07,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 60 transitions. [2024-11-09 15:03:07,485 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.37037037037037035 [2024-11-09 15:03:07,486 INFO L175 Difference]: Start difference. First operand has 60 places, 31 transitions, 186 flow. Second operand 6 states and 60 transitions. [2024-11-09 15:03:07,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 34 transitions, 251 flow [2024-11-09 15:03:07,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 34 transitions, 237 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-11-09 15:03:07,487 INFO L231 Difference]: Finished difference. Result has 50 places, 0 transitions, 0 flow [2024-11-09 15:03:07,487 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=50, PETRI_TRANSITIONS=0} [2024-11-09 15:03:07,487 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 21 predicate places. [2024-11-09 15:03:07,487 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 0 transitions, 0 flow [2024-11-09 15:03:07,488 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:03:07,490 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 9 remaining) [2024-11-09 15:03:07,490 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 9 remaining) [2024-11-09 15:03:07,490 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 9 remaining) [2024-11-09 15:03:07,490 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 9 remaining) [2024-11-09 15:03:07,490 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 9 remaining) [2024-11-09 15:03:07,491 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 9 remaining) [2024-11-09 15:03:07,491 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 9 remaining) [2024-11-09 15:03:07,491 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 9 remaining) [2024-11-09 15:03:07,491 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 9 remaining) [2024-11-09 15:03:07,491 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-09 15:03:07,491 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:03:07,495 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-09 15:03:07,495 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-09 15:03:07,499 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 03:03:07 BasicIcfg [2024-11-09 15:03:07,499 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-09 15:03:07,499 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-09 15:03:07,499 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-09 15:03:07,500 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-09 15:03:07,500 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 03:03:03" (3/4) ... [2024-11-09 15:03:07,501 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-09 15:03:07,503 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2024-11-09 15:03:07,506 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 68 nodes and edges [2024-11-09 15:03:07,506 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2024-11-09 15:03:07,507 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-11-09 15:03:07,568 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-09 15:03:07,568 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-09 15:03:07,568 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-09 15:03:07,569 INFO L158 Benchmark]: Toolchain (without parser) took 5150.97ms. Allocated memory was 178.3MB in the beginning and 237.0MB in the end (delta: 58.7MB). Free memory was 105.2MB in the beginning and 178.1MB in the end (delta: -72.9MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 15:03:07,569 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 125.8MB. Free memory is still 88.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 15:03:07,569 INFO L158 Benchmark]: CACSL2BoogieTranslator took 489.19ms. Allocated memory is still 178.3MB. Free memory was 105.1MB in the beginning and 81.8MB in the end (delta: 23.3MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-11-09 15:03:07,569 INFO L158 Benchmark]: Boogie Procedure Inliner took 70.77ms. Allocated memory is still 178.3MB. Free memory was 81.8MB in the beginning and 148.1MB in the end (delta: -66.3MB). Peak memory consumption was 8.7MB. Max. memory is 16.1GB. [2024-11-09 15:03:07,569 INFO L158 Benchmark]: Boogie Preprocessor took 38.13ms. Allocated memory is still 178.3MB. Free memory was 148.1MB in the beginning and 145.3MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 15:03:07,569 INFO L158 Benchmark]: RCFGBuilder took 579.71ms. Allocated memory is still 178.3MB. Free memory was 145.3MB in the beginning and 74.0MB in the end (delta: 71.3MB). Peak memory consumption was 71.3MB. Max. memory is 16.1GB. [2024-11-09 15:03:07,569 INFO L158 Benchmark]: TraceAbstraction took 3897.34ms. Allocated memory was 178.3MB in the beginning and 237.0MB in the end (delta: 58.7MB). Free memory was 73.3MB in the beginning and 182.3MB in the end (delta: -109.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 15:03:07,570 INFO L158 Benchmark]: Witness Printer took 68.89ms. Allocated memory is still 237.0MB. Free memory was 182.3MB in the beginning and 178.1MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-09 15:03:07,570 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 125.8MB. Free memory is still 88.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 489.19ms. Allocated memory is still 178.3MB. Free memory was 105.1MB in the beginning and 81.8MB in the end (delta: 23.3MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 70.77ms. Allocated memory is still 178.3MB. Free memory was 81.8MB in the beginning and 148.1MB in the end (delta: -66.3MB). Peak memory consumption was 8.7MB. Max. memory is 16.1GB. * Boogie Preprocessor took 38.13ms. Allocated memory is still 178.3MB. Free memory was 148.1MB in the beginning and 145.3MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 579.71ms. Allocated memory is still 178.3MB. Free memory was 145.3MB in the beginning and 74.0MB in the end (delta: 71.3MB). Peak memory consumption was 71.3MB. Max. memory is 16.1GB. * TraceAbstraction took 3897.34ms. Allocated memory was 178.3MB in the beginning and 237.0MB in the end (delta: 58.7MB). Free memory was 73.3MB in the beginning and 182.3MB in the end (delta: -109.0MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 68.89ms. Allocated memory is still 237.0MB. Free memory was 182.3MB in the beginning and 178.1MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 688]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 688]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 693]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 693]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 683]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 683]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 38 locations, 9 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.8s, OverallIterations: 11, TraceHistogramMax: 7, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 193 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 152 mSDsluCounter, 105 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 73 mSDsCounter, 29 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 768 IncrementalHoareTripleChecker+Invalid, 797 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 29 mSolverCounterUnsat, 32 mSDtfsCounter, 768 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 171 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=225occurred in iteration=8, InterpolantAutomatonStates: 66, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 277 NumberOfCodeBlocks, 256 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 292 ConstructedInterpolants, 0 QuantifiedInterpolants, 684 SizeOfPredicates, 7 NumberOfNonLiveVariables, 660 ConjunctsInSsa, 21 ConjunctsInUnsatCore, 17 InterpolantComputations, 9 PerfectInterpolantSequences, 251/362 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-09 15:03:07,591 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE