./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/05-lval_ls_04-fld_nr.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 61a67961 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/05-lval_ls_04-fld_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 c5a0c3d921e4198a2449efd49bc5373a4e6a5b0854f91282d4ef920b48af7e3c --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 23:52:58,453 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 23:52:58,524 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-14 23:52:58,530 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 23:52:58,532 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 23:52:58,560 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 23:52:58,562 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 23:52:58,563 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 23:52:58,564 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 23:52:58,565 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 23:52:58,569 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 23:52:58,569 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 23:52:58,570 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 23:52:58,570 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 23:52:58,570 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 23:52:58,570 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 23:52:58,571 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-14 23:52:58,571 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 23:52:58,571 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 23:52:58,571 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 23:52:58,572 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 23:52:58,572 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-14 23:52:58,574 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 23:52:58,575 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-14 23:52:58,575 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 23:52:58,575 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-14 23:52:58,575 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-14 23:52:58,576 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 23:52:58,576 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-14 23:52:58,576 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 23:52:58,576 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 23:52:58,577 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 23:52:58,577 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 23:52:58,577 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 23:52:58,577 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 23:52:58,577 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 23:52:58,577 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 23:52:58,578 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-14 23:52:58,578 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 23:52:58,578 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 23:52:58,578 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 23:52:58,579 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 23:52:58,579 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 23:52:58,580 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 23:52:58,580 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c5a0c3d921e4198a2449efd49bc5373a4e6a5b0854f91282d4ef920b48af7e3c [2024-10-14 23:52:58,832 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 23:52:58,858 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 23:52:58,863 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 23:52:58,864 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 23:52:58,865 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 23:52:58,866 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/05-lval_ls_04-fld_nr.i [2024-10-14 23:53:00,345 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 23:53:00,561 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 23:53:00,563 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/05-lval_ls_04-fld_nr.i [2024-10-14 23:53:00,578 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f450e8495/4add01a762774000aff5939fc198b7ea/FLAG70c5eaed0 [2024-10-14 23:53:00,905 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f450e8495/4add01a762774000aff5939fc198b7ea [2024-10-14 23:53:00,907 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 23:53:00,909 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 23:53:00,910 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 23:53:00,910 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 23:53:00,916 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 23:53:00,916 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:53:00" (1/1) ... [2024-10-14 23:53:00,917 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22179a70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:53:00, skipping insertion in model container [2024-10-14 23:53:00,919 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:53:00" (1/1) ... [2024-10-14 23:53:00,970 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 23:53:01,274 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 23:53:01,287 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 23:53:01,338 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 23:53:01,379 INFO L204 MainTranslator]: Completed translation [2024-10-14 23:53:01,379 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:53:01 WrapperNode [2024-10-14 23:53:01,380 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 23:53:01,381 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 23:53:01,381 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 23:53:01,381 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 23:53:01,388 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:53:01" (1/1) ... [2024-10-14 23:53:01,402 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:53:01" (1/1) ... [2024-10-14 23:53:01,420 INFO L138 Inliner]: procedures = 162, calls = 18, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 39 [2024-10-14 23:53:01,421 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 23:53:01,421 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 23:53:01,421 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 23:53:01,422 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 23:53:01,432 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:53:01" (1/1) ... [2024-10-14 23:53:01,432 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:53:01" (1/1) ... [2024-10-14 23:53:01,435 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:53:01" (1/1) ... [2024-10-14 23:53:01,445 INFO L175 MemorySlicer]: Split 10 memory accesses to 1 slices as follows [10]. 100 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [10]. The 0 writes are split as follows [0]. [2024-10-14 23:53:01,446 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:53:01" (1/1) ... [2024-10-14 23:53:01,446 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:53:01" (1/1) ... [2024-10-14 23:53:01,452 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:53:01" (1/1) ... [2024-10-14 23:53:01,453 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:53:01" (1/1) ... [2024-10-14 23:53:01,454 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:53:01" (1/1) ... [2024-10-14 23:53:01,455 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:53:01" (1/1) ... [2024-10-14 23:53:01,457 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 23:53:01,458 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 23:53:01,458 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 23:53:01,458 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 23:53:01,459 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:53:01" (1/1) ... [2024-10-14 23:53:01,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 23:53:01,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 23:53:01,491 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) [2024-10-14 23:53:01,498 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 [2024-10-14 23:53:01,543 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-14 23:53:01,543 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 23:53:01,544 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-10-14 23:53:01,544 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-10-14 23:53:01,544 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-14 23:53:01,545 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-14 23:53:01,545 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 23:53:01,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 23:53:01,547 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-14 23:53:01,683 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 23:53:01,685 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 23:53:01,872 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-14 23:53:01,872 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 23:53:01,968 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 23:53:01,968 INFO L314 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-14 23:53:01,968 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:53:01 BoogieIcfgContainer [2024-10-14 23:53:01,969 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 23:53:01,970 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 23:53:01,971 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 23:53:01,976 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 23:53:01,976 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:53:00" (1/3) ... [2024-10-14 23:53:01,977 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68401110 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:53:01, skipping insertion in model container [2024-10-14 23:53:01,977 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:53:01" (2/3) ... [2024-10-14 23:53:01,977 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68401110 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:53:01, skipping insertion in model container [2024-10-14 23:53:01,977 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:53:01" (3/3) ... [2024-10-14 23:53:01,980 INFO L112 eAbstractionObserver]: Analyzing ICFG 05-lval_ls_04-fld_nr.i [2024-10-14 23:53:02,000 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 23:53:02,000 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-10-14 23:53:02,001 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-14 23:53:02,040 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-14 23:53:02,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 25 places, 21 transitions, 46 flow [2024-10-14 23:53:02,100 INFO L124 PetriNetUnfolderBase]: 0/20 cut-off events. [2024-10-14 23:53:02,100 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 23:53:02,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24 conditions, 20 events. 0/20 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 28 event pairs, 0 based on Foata normal form. 0/16 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-10-14 23:53:02,102 INFO L82 GeneralOperation]: Start removeDead. Operand has 25 places, 21 transitions, 46 flow [2024-10-14 23:53:02,105 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 24 places, 20 transitions, 43 flow [2024-10-14 23:53:02,113 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 23:53:02,119 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;@6aced8e6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 23:53:02,120 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-10-14 23:53:02,125 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 23:53:02,125 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2024-10-14 23:53:02,125 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 23:53:02,125 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:53:02,126 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-14 23:53:02,126 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-14 23:53:02,131 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:53:02,131 INFO L85 PathProgramCache]: Analyzing trace with hash 216102875, now seen corresponding path program 1 times [2024-10-14 23:53:02,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:53:02,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223258559] [2024-10-14 23:53:02,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:53:02,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:53:02,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:53:02,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:53:02,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:53:02,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223258559] [2024-10-14 23:53:02,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223258559] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:53:02,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:53:02,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 23:53:02,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983588841] [2024-10-14 23:53:02,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:53:02,436 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 23:53:02,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:53:02,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 23:53:02,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 23:53:02,475 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 21 [2024-10-14 23:53:02,477 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 20 transitions, 43 flow. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:53:02,477 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:53:02,477 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 21 [2024-10-14 23:53:02,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:53:02,591 INFO L124 PetriNetUnfolderBase]: 36/104 cut-off events. [2024-10-14 23:53:02,591 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 23:53:02,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 197 conditions, 104 events. 36/104 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 350 event pairs, 16 based on Foata normal form. 6/103 useless extension candidates. Maximal degree in co-relation 188. Up to 67 conditions per place. [2024-10-14 23:53:02,594 INFO L140 encePairwiseOnDemand]: 15/21 looper letters, 18 selfloop transitions, 4 changer transitions 6/33 dead transitions. [2024-10-14 23:53:02,595 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 33 transitions, 125 flow [2024-10-14 23:53:02,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 23:53:02,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 23:53:02,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 62 transitions. [2024-10-14 23:53:02,606 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5904761904761905 [2024-10-14 23:53:02,608 INFO L175 Difference]: Start difference. First operand has 24 places, 20 transitions, 43 flow. Second operand 5 states and 62 transitions. [2024-10-14 23:53:02,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 33 transitions, 125 flow [2024-10-14 23:53:02,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 33 transitions, 124 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-14 23:53:02,613 INFO L231 Difference]: Finished difference. Result has 30 places, 21 transitions, 67 flow [2024-10-14 23:53:02,615 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=67, PETRI_PLACES=30, PETRI_TRANSITIONS=21} [2024-10-14 23:53:02,618 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 6 predicate places. [2024-10-14 23:53:02,618 INFO L471 AbstractCegarLoop]: Abstraction has has 30 places, 21 transitions, 67 flow [2024-10-14 23:53:02,619 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:53:02,619 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:53:02,619 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-14 23:53:02,619 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-14 23:53:02,620 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-14 23:53:02,620 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:53:02,620 INFO L85 PathProgramCache]: Analyzing trace with hash 216680083, now seen corresponding path program 1 times [2024-10-14 23:53:02,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:53:02,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265821463] [2024-10-14 23:53:02,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:53:02,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:53:02,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:53:02,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:53:02,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:53:02,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265821463] [2024-10-14 23:53:02,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265821463] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:53:02,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:53:02,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 23:53:02,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071945789] [2024-10-14 23:53:02,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:53:02,723 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 23:53:02,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:53:02,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 23:53:02,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 23:53:02,733 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 21 [2024-10-14 23:53:02,733 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 21 transitions, 67 flow. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:53:02,733 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:53:02,733 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 21 [2024-10-14 23:53:02,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:53:02,834 INFO L124 PetriNetUnfolderBase]: 23/85 cut-off events. [2024-10-14 23:53:02,834 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-10-14 23:53:02,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 193 conditions, 85 events. 23/85 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 291 event pairs, 11 based on Foata normal form. 14/98 useless extension candidates. Maximal degree in co-relation 180. Up to 45 conditions per place. [2024-10-14 23:53:02,836 INFO L140 encePairwiseOnDemand]: 15/21 looper letters, 18 selfloop transitions, 4 changer transitions 4/31 dead transitions. [2024-10-14 23:53:02,836 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 31 transitions, 146 flow [2024-10-14 23:53:02,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 23:53:02,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 23:53:02,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 60 transitions. [2024-10-14 23:53:02,840 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2024-10-14 23:53:02,840 INFO L175 Difference]: Start difference. First operand has 30 places, 21 transitions, 67 flow. Second operand 5 states and 60 transitions. [2024-10-14 23:53:02,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 31 transitions, 146 flow [2024-10-14 23:53:02,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 31 transitions, 138 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-10-14 23:53:02,846 INFO L231 Difference]: Finished difference. Result has 34 places, 22 transitions, 85 flow [2024-10-14 23:53:02,846 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=85, PETRI_PLACES=34, PETRI_TRANSITIONS=22} [2024-10-14 23:53:02,847 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 10 predicate places. [2024-10-14 23:53:02,849 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 22 transitions, 85 flow [2024-10-14 23:53:02,849 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:53:02,849 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:53:02,849 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:53:02,850 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-14 23:53:02,850 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-14 23:53:02,850 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:53:02,850 INFO L85 PathProgramCache]: Analyzing trace with hash 2091470775, now seen corresponding path program 1 times [2024-10-14 23:53:02,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:53:02,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615322162] [2024-10-14 23:53:02,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:53:02,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:53:02,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:53:02,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:53:02,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:53:02,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615322162] [2024-10-14 23:53:02,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615322162] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:53:03,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:53:03,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 23:53:03,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536795591] [2024-10-14 23:53:03,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:53:03,001 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 23:53:03,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:53:03,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 23:53:03,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 23:53:03,002 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 21 [2024-10-14 23:53:03,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 22 transitions, 85 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) [2024-10-14 23:53:03,003 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:53:03,003 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 21 [2024-10-14 23:53:03,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:53:03,054 INFO L124 PetriNetUnfolderBase]: 9/51 cut-off events. [2024-10-14 23:53:03,055 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-10-14 23:53:03,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129 conditions, 51 events. 9/51 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 126 event pairs, 2 based on Foata normal form. 6/56 useless extension candidates. Maximal degree in co-relation 113. Up to 24 conditions per place. [2024-10-14 23:53:03,058 INFO L140 encePairwiseOnDemand]: 17/21 looper letters, 14 selfloop transitions, 4 changer transitions 0/25 dead transitions. [2024-10-14 23:53:03,059 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 25 transitions, 127 flow [2024-10-14 23:53:03,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 23:53:03,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 23:53:03,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 42 transitions. [2024-10-14 23:53:03,061 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-10-14 23:53:03,061 INFO L175 Difference]: Start difference. First operand has 34 places, 22 transitions, 85 flow. Second operand 3 states and 42 transitions. [2024-10-14 23:53:03,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 25 transitions, 127 flow [2024-10-14 23:53:03,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 25 transitions, 120 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-10-14 23:53:03,066 INFO L231 Difference]: Finished difference. Result has 33 places, 22 transitions, 86 flow [2024-10-14 23:53:03,066 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=33, PETRI_TRANSITIONS=22} [2024-10-14 23:53:03,067 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 9 predicate places. [2024-10-14 23:53:03,067 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 22 transitions, 86 flow [2024-10-14 23:53:03,068 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) [2024-10-14 23:53:03,068 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:53:03,068 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:53:03,068 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-14 23:53:03,068 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-14 23:53:03,069 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:53:03,069 INFO L85 PathProgramCache]: Analyzing trace with hash -1152266979, now seen corresponding path program 1 times [2024-10-14 23:53:03,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:53:03,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135836613] [2024-10-14 23:53:03,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:53:03,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:53:03,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:53:03,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:53:03,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:53:03,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135836613] [2024-10-14 23:53:03,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135836613] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:53:03,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:53:03,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 23:53:03,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118483016] [2024-10-14 23:53:03,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:53:03,193 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 23:53:03,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:53:03,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 23:53:03,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-14 23:53:03,214 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 21 [2024-10-14 23:53:03,214 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 22 transitions, 86 flow. Second operand has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:53:03,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:53:03,215 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 21 [2024-10-14 23:53:03,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:53:03,334 INFO L124 PetriNetUnfolderBase]: 12/52 cut-off events. [2024-10-14 23:53:03,336 INFO L125 PetriNetUnfolderBase]: For 22/22 co-relation queries the response was YES. [2024-10-14 23:53:03,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139 conditions, 52 events. 12/52 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 113 event pairs, 7 based on Foata normal form. 2/53 useless extension candidates. Maximal degree in co-relation 124. Up to 22 conditions per place. [2024-10-14 23:53:03,337 INFO L140 encePairwiseOnDemand]: 15/21 looper letters, 17 selfloop transitions, 5 changer transitions 0/25 dead transitions. [2024-10-14 23:53:03,337 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 25 transitions, 138 flow [2024-10-14 23:53:03,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 23:53:03,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-14 23:53:03,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 47 transitions. [2024-10-14 23:53:03,339 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.373015873015873 [2024-10-14 23:53:03,339 INFO L175 Difference]: Start difference. First operand has 33 places, 22 transitions, 86 flow. Second operand 6 states and 47 transitions. [2024-10-14 23:53:03,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 25 transitions, 138 flow [2024-10-14 23:53:03,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 25 transitions, 132 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-14 23:53:03,340 INFO L231 Difference]: Finished difference. Result has 36 places, 21 transitions, 88 flow [2024-10-14 23:53:03,341 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=88, PETRI_PLACES=36, PETRI_TRANSITIONS=21} [2024-10-14 23:53:03,345 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 12 predicate places. [2024-10-14 23:53:03,345 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 21 transitions, 88 flow [2024-10-14 23:53:03,345 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:53:03,345 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:53:03,345 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:53:03,346 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-14 23:53:03,346 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-14 23:53:03,346 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:53:03,346 INFO L85 PathProgramCache]: Analyzing trace with hash -1202583239, now seen corresponding path program 1 times [2024-10-14 23:53:03,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:53:03,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691259445] [2024-10-14 23:53:03,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:53:03,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:53:03,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:53:03,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:53:03,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:53:03,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691259445] [2024-10-14 23:53:03,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691259445] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:53:03,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:53:03,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 23:53:03,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989216922] [2024-10-14 23:53:03,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:53:03,443 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 23:53:03,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:53:03,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 23:53:03,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-14 23:53:03,479 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 21 [2024-10-14 23:53:03,479 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 21 transitions, 88 flow. Second operand has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:53:03,479 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:53:03,479 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 21 [2024-10-14 23:53:03,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:53:03,568 INFO L124 PetriNetUnfolderBase]: 11/49 cut-off events. [2024-10-14 23:53:03,568 INFO L125 PetriNetUnfolderBase]: For 35/35 co-relation queries the response was YES. [2024-10-14 23:53:03,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132 conditions, 49 events. 11/49 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 101 event pairs, 5 based on Foata normal form. 2/50 useless extension candidates. Maximal degree in co-relation 115. Up to 13 conditions per place. [2024-10-14 23:53:03,569 INFO L140 encePairwiseOnDemand]: 15/21 looper letters, 17 selfloop transitions, 5 changer transitions 0/25 dead transitions. [2024-10-14 23:53:03,569 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 25 transitions, 140 flow [2024-10-14 23:53:03,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 23:53:03,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-14 23:53:03,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 47 transitions. [2024-10-14 23:53:03,571 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.373015873015873 [2024-10-14 23:53:03,571 INFO L175 Difference]: Start difference. First operand has 36 places, 21 transitions, 88 flow. Second operand 6 states and 47 transitions. [2024-10-14 23:53:03,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 25 transitions, 140 flow [2024-10-14 23:53:03,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 25 transitions, 128 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-10-14 23:53:03,573 INFO L231 Difference]: Finished difference. Result has 36 places, 20 transitions, 82 flow [2024-10-14 23:53:03,573 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=82, PETRI_PLACES=36, PETRI_TRANSITIONS=20} [2024-10-14 23:53:03,574 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 12 predicate places. [2024-10-14 23:53:03,574 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 20 transitions, 82 flow [2024-10-14 23:53:03,574 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:53:03,574 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:53:03,574 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:53:03,575 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-14 23:53:03,575 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-14 23:53:03,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:53:03,575 INFO L85 PathProgramCache]: Analyzing trace with hash 2053264439, now seen corresponding path program 1 times [2024-10-14 23:53:03,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:53:03,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862830430] [2024-10-14 23:53:03,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:53:03,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:53:03,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:53:03,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:53:03,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:53:03,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862830430] [2024-10-14 23:53:03,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862830430] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:53:03,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:53:03,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 23:53:03,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930137275] [2024-10-14 23:53:03,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:53:03,649 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 23:53:03,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:53:03,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 23:53:03,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-14 23:53:03,671 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 21 [2024-10-14 23:53:03,672 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 20 transitions, 82 flow. Second operand has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:53:03,672 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:53:03,672 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 21 [2024-10-14 23:53:03,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:53:03,751 INFO L124 PetriNetUnfolderBase]: 10/46 cut-off events. [2024-10-14 23:53:03,753 INFO L125 PetriNetUnfolderBase]: For 38/38 co-relation queries the response was YES. [2024-10-14 23:53:03,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122 conditions, 46 events. 10/46 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 88 event pairs, 5 based on Foata normal form. 2/47 useless extension candidates. Maximal degree in co-relation 106. Up to 19 conditions per place. [2024-10-14 23:53:03,753 INFO L140 encePairwiseOnDemand]: 15/21 looper letters, 10 selfloop transitions, 3 changer transitions 8/24 dead transitions. [2024-10-14 23:53:03,754 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 24 transitions, 132 flow [2024-10-14 23:53:03,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 23:53:03,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-14 23:53:03,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 50 transitions. [2024-10-14 23:53:03,755 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3401360544217687 [2024-10-14 23:53:03,755 INFO L175 Difference]: Start difference. First operand has 36 places, 20 transitions, 82 flow. Second operand 7 states and 50 transitions. [2024-10-14 23:53:03,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 24 transitions, 132 flow [2024-10-14 23:53:03,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 24 transitions, 118 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-10-14 23:53:03,757 INFO L231 Difference]: Finished difference. Result has 36 places, 14 transitions, 50 flow [2024-10-14 23:53:03,757 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=50, PETRI_PLACES=36, PETRI_TRANSITIONS=14} [2024-10-14 23:53:03,757 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 12 predicate places. [2024-10-14 23:53:03,758 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 14 transitions, 50 flow [2024-10-14 23:53:03,758 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:53:03,758 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:53:03,758 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:53:03,758 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-14 23:53:03,759 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-14 23:53:03,759 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:53:03,759 INFO L85 PathProgramCache]: Analyzing trace with hash 1374625400, now seen corresponding path program 1 times [2024-10-14 23:53:03,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:53:03,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741551775] [2024-10-14 23:53:03,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:53:03,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:53:03,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:53:03,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:53:03,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:53:03,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741551775] [2024-10-14 23:53:03,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741551775] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:53:03,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:53:03,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 23:53:03,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706944737] [2024-10-14 23:53:03,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:53:03,832 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 23:53:03,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:53:03,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 23:53:03,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-14 23:53:03,848 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 21 [2024-10-14 23:53:03,848 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 14 transitions, 50 flow. Second operand has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:53:03,848 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:53:03,848 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 21 [2024-10-14 23:53:03,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:53:03,892 INFO L124 PetriNetUnfolderBase]: 7/30 cut-off events. [2024-10-14 23:53:03,892 INFO L125 PetriNetUnfolderBase]: For 21/21 co-relation queries the response was YES. [2024-10-14 23:53:03,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 30 events. 7/30 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 29 event pairs, 2 based on Foata normal form. 2/31 useless extension candidates. Maximal degree in co-relation 72. Up to 12 conditions per place. [2024-10-14 23:53:03,893 INFO L140 encePairwiseOnDemand]: 16/21 looper letters, 0 selfloop transitions, 0 changer transitions 17/17 dead transitions. [2024-10-14 23:53:03,893 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 17 transitions, 83 flow [2024-10-14 23:53:03,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 23:53:03,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-14 23:53:03,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 39 transitions. [2024-10-14 23:53:03,894 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.30952380952380953 [2024-10-14 23:53:03,894 INFO L175 Difference]: Start difference. First operand has 36 places, 14 transitions, 50 flow. Second operand 6 states and 39 transitions. [2024-10-14 23:53:03,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 17 transitions, 83 flow [2024-10-14 23:53:03,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 17 transitions, 71 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-10-14 23:53:03,895 INFO L231 Difference]: Finished difference. Result has 25 places, 0 transitions, 0 flow [2024-10-14 23:53:03,895 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=25, PETRI_TRANSITIONS=0} [2024-10-14 23:53:03,896 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 1 predicate places. [2024-10-14 23:53:03,897 INFO L471 AbstractCegarLoop]: Abstraction has has 25 places, 0 transitions, 0 flow [2024-10-14 23:53:03,897 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:53:03,900 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 7 remaining) [2024-10-14 23:53:03,901 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 7 remaining) [2024-10-14 23:53:03,902 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2024-10-14 23:53:03,902 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 7 remaining) [2024-10-14 23:53:03,902 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 7 remaining) [2024-10-14 23:53:03,902 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 7 remaining) [2024-10-14 23:53:03,902 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 7 remaining) [2024-10-14 23:53:03,902 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-14 23:53:03,903 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:53:03,910 INFO L234 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-10-14 23:53:03,910 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-14 23:53:03,916 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 11:53:03 BasicIcfg [2024-10-14 23:53:03,917 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-14 23:53:03,917 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-14 23:53:03,917 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-14 23:53:03,917 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-14 23:53:03,918 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:53:01" (3/4) ... [2024-10-14 23:53:03,920 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-14 23:53:03,923 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2024-10-14 23:53:03,928 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 25 nodes and edges [2024-10-14 23:53:03,928 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-10-14 23:53:03,928 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-10-14 23:53:04,011 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-14 23:53:04,011 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-10-14 23:53:04,011 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-14 23:53:04,012 INFO L158 Benchmark]: Toolchain (without parser) took 3103.12ms. Allocated memory is still 176.2MB. Free memory was 106.6MB in the beginning and 81.2MB in the end (delta: 25.5MB). Peak memory consumption was 28.5MB. Max. memory is 16.1GB. [2024-10-14 23:53:04,012 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 113.2MB. Free memory is still 74.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-14 23:53:04,012 INFO L158 Benchmark]: CACSL2BoogieTranslator took 469.74ms. Allocated memory is still 176.2MB. Free memory was 106.6MB in the beginning and 86.3MB in the end (delta: 20.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-10-14 23:53:04,013 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.09ms. Allocated memory is still 176.2MB. Free memory was 86.3MB in the beginning and 84.4MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-14 23:53:04,013 INFO L158 Benchmark]: Boogie Preprocessor took 35.67ms. Allocated memory is still 176.2MB. Free memory was 84.4MB in the beginning and 82.4MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-14 23:53:04,013 INFO L158 Benchmark]: RCFGBuilder took 511.01ms. Allocated memory is still 176.2MB. Free memory was 82.4MB in the beginning and 138.3MB in the end (delta: -55.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-10-14 23:53:04,014 INFO L158 Benchmark]: TraceAbstraction took 1946.14ms. Allocated memory is still 176.2MB. Free memory was 137.1MB in the beginning and 85.3MB in the end (delta: 51.7MB). Peak memory consumption was 53.7MB. Max. memory is 16.1GB. [2024-10-14 23:53:04,014 INFO L158 Benchmark]: Witness Printer took 94.20ms. Allocated memory is still 176.2MB. Free memory was 85.3MB in the beginning and 81.2MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-14 23:53:04,017 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 113.2MB. Free memory is still 74.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 469.74ms. Allocated memory is still 176.2MB. Free memory was 106.6MB in the beginning and 86.3MB in the end (delta: 20.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.09ms. Allocated memory is still 176.2MB. Free memory was 86.3MB in the beginning and 84.4MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 35.67ms. Allocated memory is still 176.2MB. Free memory was 84.4MB in the beginning and 82.4MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 511.01ms. Allocated memory is still 176.2MB. Free memory was 82.4MB in the beginning and 138.3MB in the end (delta: -55.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 1946.14ms. Allocated memory is still 176.2MB. Free memory was 137.1MB in the beginning and 85.3MB in the end (delta: 51.7MB). Peak memory consumption was 53.7MB. Max. memory is 16.1GB. * Witness Printer took 94.20ms. Allocated memory is still 176.2MB. Free memory was 85.3MB in the beginning and 81.2MB 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: 696]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 696]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 686]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 686]: 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, 33 locations, 7 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: 1.8s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 164 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 124 mSDsluCounter, 145 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 120 mSDsCounter, 18 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 441 IncrementalHoareTripleChecker+Invalid, 459 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 18 mSolverCounterUnsat, 25 mSDtfsCounter, 441 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=88occurred in iteration=4, InterpolantAutomatonStates: 38, 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, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 73 NumberOfCodeBlocks, 73 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 66 ConstructedInterpolants, 0 QuantifiedInterpolants, 190 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-10-14 23:53:04,046 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