./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/06-symbeq_07-tricky_address2.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/06-symbeq_07-tricky_address2.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 c18dd13658bb5739ed2db8c4c80ae330682b7c3cebd2ad85657518c27ca325b9 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 23:53:02,407 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 23:53:02,478 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-14 23:53:02,486 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 23:53:02,486 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 23:53:02,521 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 23:53:02,522 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 23:53:02,522 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 23:53:02,523 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 23:53:02,524 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 23:53:02,524 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 23:53:02,525 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 23:53:02,526 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 23:53:02,527 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 23:53:02,528 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 23:53:02,528 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 23:53:02,529 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-14 23:53:02,529 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 23:53:02,531 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 23:53:02,531 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 23:53:02,532 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 23:53:02,532 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-14 23:53:02,532 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 23:53:02,533 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-14 23:53:02,533 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 23:53:02,533 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-14 23:53:02,534 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-14 23:53:02,534 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 23:53:02,534 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-14 23:53:02,534 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 23:53:02,535 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 23:53:02,535 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 23:53:02,535 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 23:53:02,536 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 23:53:02,536 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 23:53:02,549 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 23:53:02,549 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 23:53:02,550 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-14 23:53:02,550 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 23:53:02,551 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 23:53:02,551 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 23:53:02,552 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 23:53:02,552 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 23:53:02,553 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 23:53:02,553 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c18dd13658bb5739ed2db8c4c80ae330682b7c3cebd2ad85657518c27ca325b9 [2024-10-14 23:53:02,823 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 23:53:02,848 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 23:53:02,851 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 23:53:02,852 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 23:53:02,852 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 23:53:02,854 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/06-symbeq_07-tricky_address2.i [2024-10-14 23:53:04,346 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 23:53:04,678 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 23:53:04,678 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/06-symbeq_07-tricky_address2.i [2024-10-14 23:53:04,704 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ade5948b/1871298575a641f7a785a6ea6dcfbd14/FLAG06a59386e [2024-10-14 23:53:04,720 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ade5948b/1871298575a641f7a785a6ea6dcfbd14 [2024-10-14 23:53:04,723 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 23:53:04,725 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 23:53:04,727 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 23:53:04,728 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 23:53:04,734 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 23:53:04,735 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:53:04" (1/1) ... [2024-10-14 23:53:04,736 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fba010a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:53:04, skipping insertion in model container [2024-10-14 23:53:04,737 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:53:04" (1/1) ... [2024-10-14 23:53:04,790 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 23:53:05,244 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 23:53:05,272 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 23:53:05,332 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 23:53:05,389 INFO L204 MainTranslator]: Completed translation [2024-10-14 23:53:05,390 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:53:05 WrapperNode [2024-10-14 23:53:05,391 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 23:53:05,392 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 23:53:05,392 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 23:53:05,392 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 23:53:05,400 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:53:05" (1/1) ... [2024-10-14 23:53:05,414 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:53:05" (1/1) ... [2024-10-14 23:53:05,439 INFO L138 Inliner]: procedures = 264, calls = 14, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 74 [2024-10-14 23:53:05,440 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 23:53:05,440 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 23:53:05,441 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 23:53:05,441 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 23:53:05,456 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:53:05" (1/1) ... [2024-10-14 23:53:05,457 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:53:05" (1/1) ... [2024-10-14 23:53:05,463 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:53:05" (1/1) ... [2024-10-14 23:53:05,478 INFO L175 MemorySlicer]: Split 5 memory accesses to 1 slices as follows [5]. 100 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0]. The 3 writes are split as follows [3]. [2024-10-14 23:53:05,478 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:53:05" (1/1) ... [2024-10-14 23:53:05,479 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:53:05" (1/1) ... [2024-10-14 23:53:05,485 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:53:05" (1/1) ... [2024-10-14 23:53:05,488 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:53:05" (1/1) ... [2024-10-14 23:53:05,490 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:53:05" (1/1) ... [2024-10-14 23:53:05,491 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:53:05" (1/1) ... [2024-10-14 23:53:05,493 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 23:53:05,494 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 23:53:05,494 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 23:53:05,494 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 23:53:05,495 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:53:05" (1/1) ... [2024-10-14 23:53:05,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 23:53:05,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 23:53:05,533 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 23:53:05,538 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 23:53:05,583 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-14 23:53:05,584 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-14 23:53:05,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-14 23:53:05,584 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-14 23:53:05,584 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 23:53:05,584 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-10-14 23:53:05,584 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-10-14 23:53:05,584 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 23:53:05,584 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 23:53:05,586 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 23:53:05,732 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 23:53:05,735 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 23:53:05,898 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-14 23:53:05,899 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 23:53:06,025 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 23:53:06,026 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-14 23:53:06,028 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:53:06 BoogieIcfgContainer [2024-10-14 23:53:06,028 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 23:53:06,031 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 23:53:06,032 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 23:53:06,035 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 23:53:06,036 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:53:04" (1/3) ... [2024-10-14 23:53:06,036 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7926796 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:53:06, skipping insertion in model container [2024-10-14 23:53:06,037 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:53:05" (2/3) ... [2024-10-14 23:53:06,038 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7926796 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:53:06, skipping insertion in model container [2024-10-14 23:53:06,038 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:53:06" (3/3) ... [2024-10-14 23:53:06,040 INFO L112 eAbstractionObserver]: Analyzing ICFG 06-symbeq_07-tricky_address2.i [2024-10-14 23:53:06,057 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 23:53:06,057 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2024-10-14 23:53:06,057 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-14 23:53:06,091 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-14 23:53:06,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 30 places, 27 transitions, 58 flow [2024-10-14 23:53:06,158 INFO L124 PetriNetUnfolderBase]: 1/26 cut-off events. [2024-10-14 23:53:06,158 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 23:53:06,161 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 39 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. [2024-10-14 23:53:06,161 INFO L82 GeneralOperation]: Start removeDead. Operand has 30 places, 27 transitions, 58 flow [2024-10-14 23:53:06,164 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 29 places, 26 transitions, 55 flow [2024-10-14 23:53:06,175 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 23:53:06,185 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;@57272474, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 23:53:06,186 INFO L334 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-10-14 23:53:06,191 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 23:53:06,192 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-10-14 23:53:06,192 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 23:53:06,193 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:53:06,194 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-14 23:53:06,194 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)] === [2024-10-14 23:53:06,201 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:53:06,201 INFO L85 PathProgramCache]: Analyzing trace with hash 226174, now seen corresponding path program 1 times [2024-10-14 23:53:06,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:53:06,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317480800] [2024-10-14 23:53:06,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:53:06,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:53:06,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:53:06,499 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 23:53:06,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:53:06,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317480800] [2024-10-14 23:53:06,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317480800] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:53:06,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:53:06,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 23:53:06,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280410393] [2024-10-14 23:53:06,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:53:06,513 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 23:53:06,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:53:06,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 23:53:06,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 23:53:06,565 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 27 [2024-10-14 23:53:06,569 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 26 transitions, 55 flow. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 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 23:53:06,569 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:53:06,569 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 27 [2024-10-14 23:53:06,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:53:06,703 INFO L124 PetriNetUnfolderBase]: 37/119 cut-off events. [2024-10-14 23:53:06,704 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 23:53:06,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 217 conditions, 119 events. 37/119 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 400 event pairs, 36 based on Foata normal form. 1/109 useless extension candidates. Maximal degree in co-relation 192. Up to 92 conditions per place. [2024-10-14 23:53:06,708 INFO L140 encePairwiseOnDemand]: 21/27 looper letters, 18 selfloop transitions, 3 changer transitions 0/28 dead transitions. [2024-10-14 23:53:06,708 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 28 transitions, 101 flow [2024-10-14 23:53:06,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 23:53:06,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 23:53:06,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 56 transitions. [2024-10-14 23:53:06,721 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5185185185185185 [2024-10-14 23:53:06,723 INFO L175 Difference]: Start difference. First operand has 29 places, 26 transitions, 55 flow. Second operand 4 states and 56 transitions. [2024-10-14 23:53:06,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 28 transitions, 101 flow [2024-10-14 23:53:06,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 28 transitions, 100 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-14 23:53:06,727 INFO L231 Difference]: Finished difference. Result has 33 places, 28 transitions, 78 flow [2024-10-14 23:53:06,730 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} [2024-10-14 23:53:06,733 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 4 predicate places. [2024-10-14 23:53:06,734 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 28 transitions, 78 flow [2024-10-14 23:53:06,735 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 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 23:53:06,735 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:53:06,735 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-10-14 23:53:06,736 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-14 23:53:06,736 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)] === [2024-10-14 23:53:06,737 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:53:06,737 INFO L85 PathProgramCache]: Analyzing trace with hash -1851768394, now seen corresponding path program 1 times [2024-10-14 23:53:06,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:53:06,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329425480] [2024-10-14 23:53:06,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:53:06,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:53:06,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:53:06,892 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:53:06,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:53:06,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329425480] [2024-10-14 23:53:06,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329425480] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 23:53:06,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1172296889] [2024-10-14 23:53:06,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:53:06,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:53:06,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 23:53:06,897 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) [2024-10-14 23:53:06,899 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-14 23:53:06,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:53:06,976 INFO L255 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-14 23:53:06,980 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 23:53:07,030 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:53:07,031 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 23:53:07,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1172296889] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:53:07,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 23:53:07,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-10-14 23:53:07,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639077876] [2024-10-14 23:53:07,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:53:07,033 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 23:53:07,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:53:07,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 23:53:07,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-14 23:53:07,047 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 27 [2024-10-14 23:53:07,048 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 28 transitions, 78 flow. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 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 23:53:07,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:53:07,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 27 [2024-10-14 23:53:07,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:53:07,169 INFO L124 PetriNetUnfolderBase]: 37/118 cut-off events. [2024-10-14 23:53:07,170 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-14 23:53:07,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 226 conditions, 118 events. 37/118 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 395 event pairs, 36 based on Foata normal form. 1/108 useless extension candidates. Maximal degree in co-relation 209. Up to 87 conditions per place. [2024-10-14 23:53:07,172 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 14 selfloop transitions, 6 changer transitions 0/27 dead transitions. [2024-10-14 23:53:07,172 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 27 transitions, 114 flow [2024-10-14 23:53:07,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 23:53:07,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-14 23:53:07,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 69 transitions. [2024-10-14 23:53:07,174 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42592592592592593 [2024-10-14 23:53:07,174 INFO L175 Difference]: Start difference. First operand has 33 places, 28 transitions, 78 flow. Second operand 6 states and 69 transitions. [2024-10-14 23:53:07,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 27 transitions, 114 flow [2024-10-14 23:53:07,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 27 transitions, 112 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-14 23:53:07,176 INFO L231 Difference]: Finished difference. Result has 36 places, 27 transitions, 84 flow [2024-10-14 23:53:07,176 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} [2024-10-14 23:53:07,177 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 7 predicate places. [2024-10-14 23:53:07,177 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 27 transitions, 84 flow [2024-10-14 23:53:07,177 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 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 23:53:07,177 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:53:07,177 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-10-14 23:53:07,195 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-14 23:53:07,381 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 [2024-10-14 23:53:07,382 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)] === [2024-10-14 23:53:07,383 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:53:07,383 INFO L85 PathProgramCache]: Analyzing trace with hash -1570245148, now seen corresponding path program 1 times [2024-10-14 23:53:07,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:53:07,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538753479] [2024-10-14 23:53:07,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:53:07,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:53:07,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:53:07,426 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 23:53:07,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:53:07,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538753479] [2024-10-14 23:53:07,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538753479] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:53:07,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:53:07,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 23:53:07,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535149099] [2024-10-14 23:53:07,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:53:07,428 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 23:53:07,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:53:07,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 23:53:07,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 23:53:07,433 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 27 [2024-10-14 23:53:07,434 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 27 transitions, 84 flow. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 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 23:53:07,434 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:53:07,434 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 27 [2024-10-14 23:53:07,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:53:07,482 INFO L124 PetriNetUnfolderBase]: 37/117 cut-off events. [2024-10-14 23:53:07,485 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-10-14 23:53:07,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 228 conditions, 117 events. 37/117 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 391 event pairs, 36 based on Foata normal form. 1/108 useless extension candidates. Maximal degree in co-relation 205. Up to 90 conditions per place. [2024-10-14 23:53:07,486 INFO L140 encePairwiseOnDemand]: 24/27 looper letters, 15 selfloop transitions, 4 changer transitions 0/26 dead transitions. [2024-10-14 23:53:07,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 26 transitions, 118 flow [2024-10-14 23:53:07,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 23:53:07,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 23:53:07,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 42 transitions. [2024-10-14 23:53:07,490 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5185185185185185 [2024-10-14 23:53:07,490 INFO L175 Difference]: Start difference. First operand has 36 places, 27 transitions, 84 flow. Second operand 3 states and 42 transitions. [2024-10-14 23:53:07,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 26 transitions, 118 flow [2024-10-14 23:53:07,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 26 transitions, 96 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-10-14 23:53:07,495 INFO L231 Difference]: Finished difference. Result has 31 places, 26 transitions, 66 flow [2024-10-14 23:53:07,495 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} [2024-10-14 23:53:07,496 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 2 predicate places. [2024-10-14 23:53:07,496 INFO L471 AbstractCegarLoop]: Abstraction has has 31 places, 26 transitions, 66 flow [2024-10-14 23:53:07,497 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 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 23:53:07,497 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:53:07,497 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:53:07,497 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-14 23:53:07,497 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)] === [2024-10-14 23:53:07,497 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:53:07,498 INFO L85 PathProgramCache]: Analyzing trace with hash 1666888622, now seen corresponding path program 1 times [2024-10-14 23:53:07,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:53:07,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867412591] [2024-10-14 23:53:07,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:53:07,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:53:07,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:53:07,571 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:53:07,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:53:07,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867412591] [2024-10-14 23:53:07,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867412591] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 23:53:07,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [784207191] [2024-10-14 23:53:07,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:53:07,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:53:07,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 23:53:07,574 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) [2024-10-14 23:53:07,576 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-14 23:53:07,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:53:07,644 INFO L255 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-14 23:53:07,645 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 23:53:07,669 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:53:07,669 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 23:53:07,709 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:53:07,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [784207191] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 23:53:07,710 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 23:53:07,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-10-14 23:53:07,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701501344] [2024-10-14 23:53:07,724 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 23:53:07,724 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-14 23:53:07,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:53:07,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-14 23:53:07,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-14 23:53:07,757 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 27 [2024-10-14 23:53:07,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 26 transitions, 66 flow. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 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 23:53:07,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:53:07,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 27 [2024-10-14 23:53:07,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:53:07,912 INFO L124 PetriNetUnfolderBase]: 37/121 cut-off events. [2024-10-14 23:53:07,913 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2024-10-14 23:53:07,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 231 conditions, 121 events. 37/121 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 388 event pairs, 36 based on Foata normal form. 2/114 useless extension candidates. Maximal degree in co-relation 198. Up to 88 conditions per place. [2024-10-14 23:53:07,914 INFO L140 encePairwiseOnDemand]: 23/27 looper letters, 15 selfloop transitions, 7 changer transitions 0/29 dead transitions. [2024-10-14 23:53:07,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 29 transitions, 125 flow [2024-10-14 23:53:07,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 23:53:07,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-14 23:53:07,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 80 transitions. [2024-10-14 23:53:07,919 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42328042328042326 [2024-10-14 23:53:07,920 INFO L175 Difference]: Start difference. First operand has 31 places, 26 transitions, 66 flow. Second operand 7 states and 80 transitions. [2024-10-14 23:53:07,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 29 transitions, 125 flow [2024-10-14 23:53:07,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 29 transitions, 111 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 23:53:07,923 INFO L231 Difference]: Finished difference. Result has 37 places, 29 transitions, 92 flow [2024-10-14 23:53:07,923 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} [2024-10-14 23:53:07,923 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 8 predicate places. [2024-10-14 23:53:07,924 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 29 transitions, 92 flow [2024-10-14 23:53:07,924 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 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 23:53:07,924 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:53:07,924 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:53:07,943 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-14 23:53:08,124 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 [2024-10-14 23:53:08,125 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)] === [2024-10-14 23:53:08,126 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:53:08,126 INFO L85 PathProgramCache]: Analyzing trace with hash -837394770, now seen corresponding path program 2 times [2024-10-14 23:53:08,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:53:08,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032202488] [2024-10-14 23:53:08,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:53:08,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:53:08,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:53:08,266 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:53:08,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:53:08,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032202488] [2024-10-14 23:53:08,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032202488] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 23:53:08,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [268802956] [2024-10-14 23:53:08,268 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 23:53:08,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:53:08,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 23:53:08,270 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) [2024-10-14 23:53:08,271 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-14 23:53:08,338 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-14 23:53:08,338 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 23:53:08,339 INFO L255 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-14 23:53:08,341 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 23:53:08,373 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2024-10-14 23:53:08,414 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2024-10-14 23:53:08,429 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-14 23:53:08,429 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 23:53:08,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [268802956] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:53:08,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 23:53:08,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [8] total 10 [2024-10-14 23:53:08,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503588026] [2024-10-14 23:53:08,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:53:08,431 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 23:53:08,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:53:08,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 23:53:08,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-10-14 23:53:08,439 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 27 [2024-10-14 23:53:08,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 29 transitions, 92 flow. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 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 23:53:08,440 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:53:08,440 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 27 [2024-10-14 23:53:08,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:53:08,542 INFO L124 PetriNetUnfolderBase]: 50/139 cut-off events. [2024-10-14 23:53:08,543 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2024-10-14 23:53:08,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 282 conditions, 139 events. 50/139 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 429 event pairs, 16 based on Foata normal form. 7/133 useless extension candidates. Maximal degree in co-relation 244. Up to 68 conditions per place. [2024-10-14 23:53:08,544 INFO L140 encePairwiseOnDemand]: 21/27 looper letters, 32 selfloop transitions, 6 changer transitions 3/46 dead transitions. [2024-10-14 23:53:08,544 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 46 transitions, 208 flow [2024-10-14 23:53:08,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 23:53:08,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 23:53:08,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 78 transitions. [2024-10-14 23:53:08,545 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5777777777777777 [2024-10-14 23:53:08,545 INFO L175 Difference]: Start difference. First operand has 37 places, 29 transitions, 92 flow. Second operand 5 states and 78 transitions. [2024-10-14 23:53:08,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 46 transitions, 208 flow [2024-10-14 23:53:08,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 46 transitions, 204 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 23:53:08,548 INFO L231 Difference]: Finished difference. Result has 43 places, 32 transitions, 126 flow [2024-10-14 23:53:08,548 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=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=126, PETRI_PLACES=43, PETRI_TRANSITIONS=32} [2024-10-14 23:53:08,549 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 14 predicate places. [2024-10-14 23:53:08,549 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 32 transitions, 126 flow [2024-10-14 23:53:08,549 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 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 23:53:08,549 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:53:08,549 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:53:08,567 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-14 23:53:08,753 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:53:08,754 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)] === [2024-10-14 23:53:08,754 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:53:08,755 INFO L85 PathProgramCache]: Analyzing trace with hash -836623818, now seen corresponding path program 1 times [2024-10-14 23:53:08,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:53:08,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817805072] [2024-10-14 23:53:08,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:53:08,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:53:08,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:53:08,862 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:53:08,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:53:08,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817805072] [2024-10-14 23:53:08,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817805072] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 23:53:08,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [327716341] [2024-10-14 23:53:08,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:53:08,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:53:08,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 23:53:08,865 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) [2024-10-14 23:53:08,866 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-14 23:53:08,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:53:08,933 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-14 23:53:08,934 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 23:53:08,978 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:53:08,979 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 23:53:09,082 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:53:09,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [327716341] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 23:53:09,083 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 23:53:09,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2024-10-14 23:53:09,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657630557] [2024-10-14 23:53:09,083 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 23:53:09,084 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-14 23:53:09,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:53:09,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-14 23:53:09,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2024-10-14 23:53:09,112 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 27 [2024-10-14 23:53:09,112 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 32 transitions, 126 flow. Second operand has 18 states, 18 states have (on average 9.277777777777779) internal successors, (167), 18 states have internal predecessors, (167), 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 23:53:09,113 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:53:09,113 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 27 [2024-10-14 23:53:09,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:53:09,258 INFO L124 PetriNetUnfolderBase]: 27/123 cut-off events. [2024-10-14 23:53:09,259 INFO L125 PetriNetUnfolderBase]: For 64/64 co-relation queries the response was YES. [2024-10-14 23:53:09,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 294 conditions, 123 events. 27/123 cut-off events. For 64/64 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 373 event pairs, 26 based on Foata normal form. 4/121 useless extension candidates. Maximal degree in co-relation 259. Up to 72 conditions per place. [2024-10-14 23:53:09,260 INFO L140 encePairwiseOnDemand]: 23/27 looper letters, 17 selfloop transitions, 15 changer transitions 0/40 dead transitions. [2024-10-14 23:53:09,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 40 transitions, 238 flow [2024-10-14 23:53:09,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-14 23:53:09,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-14 23:53:09,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 154 transitions. [2024-10-14 23:53:09,262 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3802469135802469 [2024-10-14 23:53:09,262 INFO L175 Difference]: Start difference. First operand has 43 places, 32 transitions, 126 flow. Second operand 15 states and 154 transitions. [2024-10-14 23:53:09,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 40 transitions, 238 flow [2024-10-14 23:53:09,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 40 transitions, 238 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-14 23:53:09,265 INFO L231 Difference]: Finished difference. Result has 61 places, 40 transitions, 223 flow [2024-10-14 23:53:09,266 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=223, PETRI_PLACES=61, PETRI_TRANSITIONS=40} [2024-10-14 23:53:09,266 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 32 predicate places. [2024-10-14 23:53:09,267 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 40 transitions, 223 flow [2024-10-14 23:53:09,267 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 9.277777777777779) internal successors, (167), 18 states have internal predecessors, (167), 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 23:53:09,267 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:53:09,267 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:53:09,285 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-14 23:53:09,471 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:53:09,472 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)] === [2024-10-14 23:53:09,472 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:53:09,472 INFO L85 PathProgramCache]: Analyzing trace with hash 2042935350, now seen corresponding path program 2 times [2024-10-14 23:53:09,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:53:09,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266329499] [2024-10-14 23:53:09,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:53:09,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:53:09,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:53:09,817 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:53:09,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:53:09,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266329499] [2024-10-14 23:53:09,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266329499] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 23:53:09,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1982267187] [2024-10-14 23:53:09,818 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 23:53:09,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:53:09,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 23:53:09,824 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 23:53:09,827 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-14 23:53:09,899 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-14 23:53:09,899 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 23:53:09,900 INFO L255 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-14 23:53:09,902 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 23:53:09,907 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2024-10-14 23:53:09,975 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2024-10-14 23:53:09,998 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-10-14 23:53:09,999 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 23:53:09,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1982267187] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:53:09,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 23:53:09,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [16] total 18 [2024-10-14 23:53:10,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001891266] [2024-10-14 23:53:10,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:53:10,000 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 23:53:10,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:53:10,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 23:53:10,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2024-10-14 23:53:10,010 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 27 [2024-10-14 23:53:10,011 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 40 transitions, 223 flow. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 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 23:53:10,011 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:53:10,012 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 27 [2024-10-14 23:53:10,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:53:10,113 INFO L124 PetriNetUnfolderBase]: 37/138 cut-off events. [2024-10-14 23:53:10,114 INFO L125 PetriNetUnfolderBase]: For 115/116 co-relation queries the response was YES. [2024-10-14 23:53:10,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 365 conditions, 138 events. 37/138 cut-off events. For 115/116 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 423 event pairs, 12 based on Foata normal form. 7/145 useless extension candidates. Maximal degree in co-relation 325. Up to 49 conditions per place. [2024-10-14 23:53:10,115 INFO L140 encePairwiseOnDemand]: 21/27 looper letters, 40 selfloop transitions, 7 changer transitions 0/53 dead transitions. [2024-10-14 23:53:10,115 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 53 transitions, 351 flow [2024-10-14 23:53:10,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 23:53:10,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 23:53:10,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 75 transitions. [2024-10-14 23:53:10,117 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2024-10-14 23:53:10,117 INFO L175 Difference]: Start difference. First operand has 61 places, 40 transitions, 223 flow. Second operand 5 states and 75 transitions. [2024-10-14 23:53:10,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 53 transitions, 351 flow [2024-10-14 23:53:10,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 53 transitions, 341 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-10-14 23:53:10,120 INFO L231 Difference]: Finished difference. Result has 65 places, 43 transitions, 259 flow [2024-10-14 23:53:10,121 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=213, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=259, PETRI_PLACES=65, PETRI_TRANSITIONS=43} [2024-10-14 23:53:10,121 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 36 predicate places. [2024-10-14 23:53:10,121 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 43 transitions, 259 flow [2024-10-14 23:53:10,122 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 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 23:53:10,122 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:53:10,122 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:53:10,140 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-14 23:53:10,322 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:53:10,323 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-10-14 23:53:10,323 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:53:10,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1117412882, now seen corresponding path program 1 times [2024-10-14 23:53:10,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:53:10,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294475976] [2024-10-14 23:53:10,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:53:10,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:53:10,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:53:10,566 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:53:10,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:53:10,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294475976] [2024-10-14 23:53:10,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294475976] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 23:53:10,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [399182765] [2024-10-14 23:53:10,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:53:10,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:53:10,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 23:53:10,569 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 23:53:10,571 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-14 23:53:10,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:53:10,639 INFO L255 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-14 23:53:10,641 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 23:53:10,703 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:53:10,703 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 23:53:10,889 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:53:10,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [399182765] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 23:53:10,890 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 23:53:10,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 22 [2024-10-14 23:53:10,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97694775] [2024-10-14 23:53:10,890 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 23:53:10,891 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-10-14 23:53:10,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:53:10,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-10-14 23:53:10,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2024-10-14 23:53:10,911 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 27 [2024-10-14 23:53:10,912 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 43 transitions, 259 flow. Second operand has 23 states, 23 states have (on average 9.26086956521739) internal successors, (213), 23 states have internal predecessors, (213), 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 23:53:10,912 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:53:10,912 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 27 [2024-10-14 23:53:10,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:53:11,121 INFO L124 PetriNetUnfolderBase]: 26/136 cut-off events. [2024-10-14 23:53:11,122 INFO L125 PetriNetUnfolderBase]: For 216/218 co-relation queries the response was YES. [2024-10-14 23:53:11,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 409 conditions, 136 events. 26/136 cut-off events. For 216/218 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 405 event pairs, 25 based on Foata normal form. 3/139 useless extension candidates. Maximal degree in co-relation 363. Up to 74 conditions per place. [2024-10-14 23:53:11,123 INFO L140 encePairwiseOnDemand]: 23/27 looper letters, 19 selfloop transitions, 21 changer transitions 0/49 dead transitions. [2024-10-14 23:53:11,123 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 49 transitions, 393 flow [2024-10-14 23:53:11,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-10-14 23:53:11,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-10-14 23:53:11,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 207 transitions. [2024-10-14 23:53:11,125 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.36507936507936506 [2024-10-14 23:53:11,125 INFO L175 Difference]: Start difference. First operand has 65 places, 43 transitions, 259 flow. Second operand 21 states and 207 transitions. [2024-10-14 23:53:11,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 49 transitions, 393 flow [2024-10-14 23:53:11,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 49 transitions, 393 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-14 23:53:11,135 INFO L231 Difference]: Finished difference. Result has 88 places, 49 transitions, 370 flow [2024-10-14 23:53:11,136 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=259, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=370, PETRI_PLACES=88, PETRI_TRANSITIONS=49} [2024-10-14 23:53:11,136 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 59 predicate places. [2024-10-14 23:53:11,138 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 49 transitions, 370 flow [2024-10-14 23:53:11,138 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 9.26086956521739) internal successors, (213), 23 states have internal predecessors, (213), 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 23:53:11,138 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:53:11,139 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:53:11,155 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-14 23:53:11,339 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:53:11,340 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-10-14 23:53:11,340 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:53:11,340 INFO L85 PathProgramCache]: Analyzing trace with hash 118621478, now seen corresponding path program 2 times [2024-10-14 23:53:11,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:53:11,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923670053] [2024-10-14 23:53:11,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:53:11,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:53:11,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:53:11,546 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-14 23:53:11,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:53:11,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923670053] [2024-10-14 23:53:11,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923670053] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:53:11,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:53:11,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 23:53:11,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161040944] [2024-10-14 23:53:11,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:53:11,549 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 23:53:11,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:53:11,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 23:53:11,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-14 23:53:11,557 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 27 [2024-10-14 23:53:11,557 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 49 transitions, 370 flow. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 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 23:53:11,557 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:53:11,557 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 27 [2024-10-14 23:53:11,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:53:11,633 INFO L124 PetriNetUnfolderBase]: 30/136 cut-off events. [2024-10-14 23:53:11,633 INFO L125 PetriNetUnfolderBase]: For 270/272 co-relation queries the response was YES. [2024-10-14 23:53:11,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 447 conditions, 136 events. 30/136 cut-off events. For 270/272 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 378 event pairs, 14 based on Foata normal form. 9/145 useless extension candidates. Maximal degree in co-relation 397. Up to 54 conditions per place. [2024-10-14 23:53:11,635 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 43 selfloop transitions, 5 changer transitions 3/57 dead transitions. [2024-10-14 23:53:11,635 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 57 transitions, 490 flow [2024-10-14 23:53:11,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 23:53:11,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 23:53:11,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 73 transitions. [2024-10-14 23:53:11,636 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5407407407407407 [2024-10-14 23:53:11,636 INFO L175 Difference]: Start difference. First operand has 88 places, 49 transitions, 370 flow. Second operand 5 states and 73 transitions. [2024-10-14 23:53:11,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 57 transitions, 490 flow [2024-10-14 23:53:11,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 57 transitions, 442 flow, removed 1 selfloop flow, removed 14 redundant places. [2024-10-14 23:53:11,641 INFO L231 Difference]: Finished difference. Result has 78 places, 47 transitions, 318 flow [2024-10-14 23:53:11,641 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=318, PETRI_PLACES=78, PETRI_TRANSITIONS=47} [2024-10-14 23:53:11,641 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 49 predicate places. [2024-10-14 23:53:11,642 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 47 transitions, 318 flow [2024-10-14 23:53:11,642 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 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 23:53:11,642 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:53:11,642 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:53:11,642 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-14 23:53:11,643 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)] === [2024-10-14 23:53:11,643 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:53:11,643 INFO L85 PathProgramCache]: Analyzing trace with hash 142521011, now seen corresponding path program 1 times [2024-10-14 23:53:11,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:53:11,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849293553] [2024-10-14 23:53:11,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:53:11,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:53:11,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:53:11,774 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-14 23:53:11,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:53:11,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849293553] [2024-10-14 23:53:11,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849293553] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:53:11,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:53:11,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 23:53:11,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071488929] [2024-10-14 23:53:11,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:53:11,775 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 23:53:11,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:53:11,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 23:53:11,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-14 23:53:11,784 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 27 [2024-10-14 23:53:11,785 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 47 transitions, 318 flow. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 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 23:53:11,785 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:53:11,785 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 27 [2024-10-14 23:53:11,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:53:11,864 INFO L124 PetriNetUnfolderBase]: 30/130 cut-off events. [2024-10-14 23:53:11,864 INFO L125 PetriNetUnfolderBase]: For 251/253 co-relation queries the response was YES. [2024-10-14 23:53:11,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 418 conditions, 130 events. 30/130 cut-off events. For 251/253 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 325 event pairs, 14 based on Foata normal form. 9/139 useless extension candidates. Maximal degree in co-relation 381. Up to 51 conditions per place. [2024-10-14 23:53:11,865 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 42 selfloop transitions, 4 changer transitions 4/55 dead transitions. [2024-10-14 23:53:11,866 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 55 transitions, 438 flow [2024-10-14 23:53:11,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 23:53:11,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 23:53:11,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 73 transitions. [2024-10-14 23:53:11,867 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5407407407407407 [2024-10-14 23:53:11,867 INFO L175 Difference]: Start difference. First operand has 78 places, 47 transitions, 318 flow. Second operand 5 states and 73 transitions. [2024-10-14 23:53:11,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 55 transitions, 438 flow [2024-10-14 23:53:11,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 55 transitions, 419 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-10-14 23:53:11,871 INFO L231 Difference]: Finished difference. Result has 76 places, 45 transitions, 296 flow [2024-10-14 23:53:11,871 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=297, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=296, PETRI_PLACES=76, PETRI_TRANSITIONS=45} [2024-10-14 23:53:11,872 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 47 predicate places. [2024-10-14 23:53:11,872 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 45 transitions, 296 flow [2024-10-14 23:53:11,872 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 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 23:53:11,872 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:53:11,872 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:53:11,872 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-14 23:53:11,873 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-10-14 23:53:11,873 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:53:11,873 INFO L85 PathProgramCache]: Analyzing trace with hash -1096668909, now seen corresponding path program 1 times [2024-10-14 23:53:11,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:53:11,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827977265] [2024-10-14 23:53:11,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:53:11,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:53:11,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:53:12,196 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-14 23:53:12,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:53:12,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827977265] [2024-10-14 23:53:12,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827977265] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:53:12,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:53:12,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 23:53:12,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34268366] [2024-10-14 23:53:12,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:53:12,198 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-14 23:53:12,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:53:12,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-14 23:53:12,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-10-14 23:53:12,219 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 27 [2024-10-14 23:53:12,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 45 transitions, 296 flow. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 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) [2024-10-14 23:53:12,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:53:12,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 27 [2024-10-14 23:53:12,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:53:12,385 INFO L124 PetriNetUnfolderBase]: 39/151 cut-off events. [2024-10-14 23:53:12,385 INFO L125 PetriNetUnfolderBase]: For 209/209 co-relation queries the response was YES. [2024-10-14 23:53:12,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 456 conditions, 151 events. 39/151 cut-off events. For 209/209 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 433 event pairs, 10 based on Foata normal form. 3/154 useless extension candidates. Maximal degree in co-relation 393. Up to 42 conditions per place. [2024-10-14 23:53:12,386 INFO L140 encePairwiseOnDemand]: 19/27 looper letters, 51 selfloop transitions, 8 changer transitions 2/64 dead transitions. [2024-10-14 23:53:12,386 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 64 transitions, 471 flow [2024-10-14 23:53:12,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-14 23:53:12,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-14 23:53:12,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-10-14 23:53:12,387 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3991769547325103 [2024-10-14 23:53:12,388 INFO L175 Difference]: Start difference. First operand has 76 places, 45 transitions, 296 flow. Second operand 9 states and 97 transitions. [2024-10-14 23:53:12,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 64 transitions, 471 flow [2024-10-14 23:53:12,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 64 transitions, 457 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-10-14 23:53:12,392 INFO L231 Difference]: Finished difference. Result has 82 places, 48 transitions, 327 flow [2024-10-14 23:53:12,393 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=285, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=327, PETRI_PLACES=82, PETRI_TRANSITIONS=48} [2024-10-14 23:53:12,393 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 53 predicate places. [2024-10-14 23:53:12,393 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 48 transitions, 327 flow [2024-10-14 23:53:12,393 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 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) [2024-10-14 23:53:12,394 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:53:12,394 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:53:12,394 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-14 23:53:12,395 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-10-14 23:53:12,395 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:53:12,395 INFO L85 PathProgramCache]: Analyzing trace with hash -1089797028, now seen corresponding path program 1 times [2024-10-14 23:53:12,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:53:12,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829058897] [2024-10-14 23:53:12,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:53:12,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:53:12,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:53:12,667 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-14 23:53:12,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:53:12,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829058897] [2024-10-14 23:53:12,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829058897] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:53:12,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:53:12,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 23:53:12,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194931475] [2024-10-14 23:53:12,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:53:12,672 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-14 23:53:12,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:53:12,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-14 23:53:12,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-10-14 23:53:12,688 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 27 [2024-10-14 23:53:12,689 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 48 transitions, 327 flow. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 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) [2024-10-14 23:53:12,689 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:53:12,689 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 27 [2024-10-14 23:53:12,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:53:12,825 INFO L124 PetriNetUnfolderBase]: 36/141 cut-off events. [2024-10-14 23:53:12,825 INFO L125 PetriNetUnfolderBase]: For 256/256 co-relation queries the response was YES. [2024-10-14 23:53:12,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 464 conditions, 141 events. 36/141 cut-off events. For 256/256 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 385 event pairs, 11 based on Foata normal form. 3/144 useless extension candidates. Maximal degree in co-relation 389. Up to 44 conditions per place. [2024-10-14 23:53:12,826 INFO L140 encePairwiseOnDemand]: 20/27 looper letters, 53 selfloop transitions, 7 changer transitions 0/63 dead transitions. [2024-10-14 23:53:12,826 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 63 transitions, 504 flow [2024-10-14 23:53:12,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 23:53:12,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-14 23:53:12,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 80 transitions. [2024-10-14 23:53:12,827 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42328042328042326 [2024-10-14 23:53:12,827 INFO L175 Difference]: Start difference. First operand has 82 places, 48 transitions, 327 flow. Second operand 7 states and 80 transitions. [2024-10-14 23:53:12,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 63 transitions, 504 flow [2024-10-14 23:53:12,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 63 transitions, 488 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-10-14 23:53:12,831 INFO L231 Difference]: Finished difference. Result has 81 places, 47 transitions, 323 flow [2024-10-14 23:53:12,831 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=309, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=323, PETRI_PLACES=81, PETRI_TRANSITIONS=47} [2024-10-14 23:53:12,832 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 52 predicate places. [2024-10-14 23:53:12,832 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 47 transitions, 323 flow [2024-10-14 23:53:12,832 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 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) [2024-10-14 23:53:12,832 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:53:12,832 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:53:12,833 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-14 23:53:12,833 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-10-14 23:53:12,833 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:53:12,833 INFO L85 PathProgramCache]: Analyzing trace with hash 1997367529, now seen corresponding path program 2 times [2024-10-14 23:53:12,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:53:12,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373971006] [2024-10-14 23:53:12,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:53:12,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:53:12,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:53:13,088 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-14 23:53:13,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:53:13,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373971006] [2024-10-14 23:53:13,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373971006] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:53:13,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:53:13,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 23:53:13,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428977442] [2024-10-14 23:53:13,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:53:13,090 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-14 23:53:13,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:53:13,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-14 23:53:13,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-14 23:53:13,108 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 27 [2024-10-14 23:53:13,108 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 47 transitions, 323 flow. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 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) [2024-10-14 23:53:13,108 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:53:13,108 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 27 [2024-10-14 23:53:13,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:53:13,207 INFO L124 PetriNetUnfolderBase]: 34/138 cut-off events. [2024-10-14 23:53:13,207 INFO L125 PetriNetUnfolderBase]: For 226/226 co-relation queries the response was YES. [2024-10-14 23:53:13,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 461 conditions, 138 events. 34/138 cut-off events. For 226/226 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 355 event pairs, 12 based on Foata normal form. 3/141 useless extension candidates. Maximal degree in co-relation 402. Up to 47 conditions per place. [2024-10-14 23:53:13,209 INFO L140 encePairwiseOnDemand]: 21/27 looper letters, 45 selfloop transitions, 7 changer transitions 0/55 dead transitions. [2024-10-14 23:53:13,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 55 transitions, 443 flow [2024-10-14 23:53:13,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 23:53:13,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-14 23:53:13,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 74 transitions. [2024-10-14 23:53:13,210 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3915343915343915 [2024-10-14 23:53:13,210 INFO L175 Difference]: Start difference. First operand has 81 places, 47 transitions, 323 flow. Second operand 7 states and 74 transitions. [2024-10-14 23:53:13,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 55 transitions, 443 flow [2024-10-14 23:53:13,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 55 transitions, 425 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-10-14 23:53:13,213 INFO L231 Difference]: Finished difference. Result has 79 places, 46 transitions, 314 flow [2024-10-14 23:53:13,214 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=314, PETRI_PLACES=79, PETRI_TRANSITIONS=46} [2024-10-14 23:53:13,214 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 50 predicate places. [2024-10-14 23:53:13,214 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 46 transitions, 314 flow [2024-10-14 23:53:13,214 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 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) [2024-10-14 23:53:13,215 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:53:13,215 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:53:13,215 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-14 23:53:13,215 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-10-14 23:53:13,215 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:53:13,216 INFO L85 PathProgramCache]: Analyzing trace with hash 363002430, now seen corresponding path program 1 times [2024-10-14 23:53:13,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:53:13,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654026141] [2024-10-14 23:53:13,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:53:13,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:53:13,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:53:13,456 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-14 23:53:13,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:53:13,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654026141] [2024-10-14 23:53:13,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654026141] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:53:13,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:53:13,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 23:53:13,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351379924] [2024-10-14 23:53:13,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:53:13,458 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-14 23:53:13,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:53:13,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-14 23:53:13,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-10-14 23:53:13,481 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 27 [2024-10-14 23:53:13,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 46 transitions, 314 flow. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 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) [2024-10-14 23:53:13,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:53:13,482 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 27 [2024-10-14 23:53:13,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:53:13,583 INFO L124 PetriNetUnfolderBase]: 32/133 cut-off events. [2024-10-14 23:53:13,583 INFO L125 PetriNetUnfolderBase]: For 216/216 co-relation queries the response was YES. [2024-10-14 23:53:13,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 433 conditions, 133 events. 32/133 cut-off events. For 216/216 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 338 event pairs, 8 based on Foata normal form. 3/136 useless extension candidates. Maximal degree in co-relation 342. Up to 46 conditions per place. [2024-10-14 23:53:13,584 INFO L140 encePairwiseOnDemand]: 20/27 looper letters, 42 selfloop transitions, 6 changer transitions 6/57 dead transitions. [2024-10-14 23:53:13,584 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 57 transitions, 444 flow [2024-10-14 23:53:13,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 23:53:13,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-14 23:53:13,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 78 transitions. [2024-10-14 23:53:13,585 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4126984126984127 [2024-10-14 23:53:13,586 INFO L175 Difference]: Start difference. First operand has 79 places, 46 transitions, 314 flow. Second operand 7 states and 78 transitions. [2024-10-14 23:53:13,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 57 transitions, 444 flow [2024-10-14 23:53:13,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 57 transitions, 424 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-10-14 23:53:13,589 INFO L231 Difference]: Finished difference. Result has 78 places, 44 transitions, 293 flow [2024-10-14 23:53:13,589 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=293, PETRI_PLACES=78, PETRI_TRANSITIONS=44} [2024-10-14 23:53:13,590 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 49 predicate places. [2024-10-14 23:53:13,590 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 44 transitions, 293 flow [2024-10-14 23:53:13,590 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 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) [2024-10-14 23:53:13,590 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:53:13,590 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:53:13,591 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-14 23:53:13,591 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-10-14 23:53:13,591 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:53:13,591 INFO L85 PathProgramCache]: Analyzing trace with hash 576030720, now seen corresponding path program 1 times [2024-10-14 23:53:13,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:53:13,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061768975] [2024-10-14 23:53:13,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:53:13,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:53:13,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:53:13,845 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-14 23:53:13,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:53:13,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061768975] [2024-10-14 23:53:13,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061768975] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:53:13,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:53:13,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 23:53:13,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516833646] [2024-10-14 23:53:13,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:53:13,846 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-14 23:53:13,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:53:13,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-14 23:53:13,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-10-14 23:53:13,866 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 27 [2024-10-14 23:53:13,867 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 44 transitions, 293 flow. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 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) [2024-10-14 23:53:13,867 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:53:13,867 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 27 [2024-10-14 23:53:13,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:53:13,966 INFO L124 PetriNetUnfolderBase]: 28/120 cut-off events. [2024-10-14 23:53:13,967 INFO L125 PetriNetUnfolderBase]: For 189/189 co-relation queries the response was YES. [2024-10-14 23:53:13,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 386 conditions, 120 events. 28/120 cut-off events. For 189/189 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 263 event pairs, 12 based on Foata normal form. 3/123 useless extension candidates. Maximal degree in co-relation 245. Up to 36 conditions per place. [2024-10-14 23:53:13,968 INFO L140 encePairwiseOnDemand]: 21/27 looper letters, 31 selfloop transitions, 3 changer transitions 15/52 dead transitions. [2024-10-14 23:53:13,968 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 52 transitions, 407 flow [2024-10-14 23:53:13,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 23:53:13,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-14 23:53:13,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 73 transitions. [2024-10-14 23:53:13,969 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3862433862433862 [2024-10-14 23:53:13,969 INFO L175 Difference]: Start difference. First operand has 78 places, 44 transitions, 293 flow. Second operand 7 states and 73 transitions. [2024-10-14 23:53:13,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 52 transitions, 407 flow [2024-10-14 23:53:13,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 52 transitions, 391 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-10-14 23:53:13,971 INFO L231 Difference]: Finished difference. Result has 74 places, 37 transitions, 257 flow [2024-10-14 23:53:13,971 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=273, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=257, PETRI_PLACES=74, PETRI_TRANSITIONS=37} [2024-10-14 23:53:13,972 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 45 predicate places. [2024-10-14 23:53:13,972 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 37 transitions, 257 flow [2024-10-14 23:53:13,972 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 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) [2024-10-14 23:53:13,972 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:53:13,972 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:53:13,973 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-14 23:53:13,973 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-10-14 23:53:13,974 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:53:13,974 INFO L85 PathProgramCache]: Analyzing trace with hash 1788851496, now seen corresponding path program 2 times [2024-10-14 23:53:13,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:53:13,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113817739] [2024-10-14 23:53:13,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:53:13,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:53:13,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:53:14,216 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-14 23:53:14,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:53:14,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113817739] [2024-10-14 23:53:14,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113817739] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:53:14,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:53:14,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 23:53:14,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743491853] [2024-10-14 23:53:14,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:53:14,217 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-14 23:53:14,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:53:14,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-14 23:53:14,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-14 23:53:14,229 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 27 [2024-10-14 23:53:14,230 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 37 transitions, 257 flow. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 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) [2024-10-14 23:53:14,230 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:53:14,230 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 27 [2024-10-14 23:53:14,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:53:14,279 INFO L124 PetriNetUnfolderBase]: 7/59 cut-off events. [2024-10-14 23:53:14,279 INFO L125 PetriNetUnfolderBase]: For 137/137 co-relation queries the response was YES. [2024-10-14 23:53:14,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 219 conditions, 59 events. 7/59 cut-off events. For 137/137 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 31 event pairs, 4 based on Foata normal form. 3/62 useless extension candidates. Maximal degree in co-relation 148. Up to 26 conditions per place. [2024-10-14 23:53:14,280 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 0 selfloop transitions, 0 changer transitions 38/38 dead transitions. [2024-10-14 23:53:14,280 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 38 transitions, 327 flow [2024-10-14 23:53:14,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 23:53:14,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-14 23:53:14,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 53 transitions. [2024-10-14 23:53:14,281 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3271604938271605 [2024-10-14 23:53:14,281 INFO L175 Difference]: Start difference. First operand has 74 places, 37 transitions, 257 flow. Second operand 6 states and 53 transitions. [2024-10-14 23:53:14,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 38 transitions, 327 flow [2024-10-14 23:53:14,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 38 transitions, 304 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-10-14 23:53:14,283 INFO L231 Difference]: Finished difference. Result has 58 places, 0 transitions, 0 flow [2024-10-14 23:53:14,283 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=58, PETRI_TRANSITIONS=0} [2024-10-14 23:53:14,284 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 29 predicate places. [2024-10-14 23:53:14,284 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 0 transitions, 0 flow [2024-10-14 23:53:14,284 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 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) [2024-10-14 23:53:14,287 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 9 remaining) [2024-10-14 23:53:14,287 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 9 remaining) [2024-10-14 23:53:14,287 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 9 remaining) [2024-10-14 23:53:14,287 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 9 remaining) [2024-10-14 23:53:14,288 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 9 remaining) [2024-10-14 23:53:14,288 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 9 remaining) [2024-10-14 23:53:14,288 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 9 remaining) [2024-10-14 23:53:14,288 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 9 remaining) [2024-10-14 23:53:14,288 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 9 remaining) [2024-10-14 23:53:14,289 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-14 23:53:14,289 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-10-14 23:53:14,294 INFO L234 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-10-14 23:53:14,294 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-14 23:53:14,298 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 11:53:14 BasicIcfg [2024-10-14 23:53:14,299 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-14 23:53:14,300 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-14 23:53:14,300 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-14 23:53:14,300 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-14 23:53:14,300 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:53:06" (3/4) ... [2024-10-14 23:53:14,302 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-14 23:53:14,305 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2024-10-14 23:53:14,310 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 28 nodes and edges [2024-10-14 23:53:14,310 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2024-10-14 23:53:14,310 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-10-14 23:53:14,390 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-14 23:53:14,391 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-10-14 23:53:14,391 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-14 23:53:14,391 INFO L158 Benchmark]: Toolchain (without parser) took 9666.38ms. Allocated memory was 178.3MB in the beginning and 241.2MB in the end (delta: 62.9MB). Free memory was 117.5MB in the beginning and 90.5MB in the end (delta: 27.0MB). Peak memory consumption was 92.2MB. Max. memory is 16.1GB. [2024-10-14 23:53:14,392 INFO L158 Benchmark]: CDTParser took 1.00ms. Allocated memory is still 178.3MB. Free memory is still 147.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-14 23:53:14,392 INFO L158 Benchmark]: CACSL2BoogieTranslator took 664.08ms. Allocated memory is still 178.3MB. Free memory was 117.5MB in the beginning and 86.9MB in the end (delta: 30.6MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2024-10-14 23:53:14,392 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.19ms. Allocated memory is still 178.3MB. Free memory was 86.9MB in the beginning and 84.6MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-14 23:53:14,393 INFO L158 Benchmark]: Boogie Preprocessor took 52.94ms. Allocated memory is still 178.3MB. Free memory was 84.6MB in the beginning and 82.2MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-14 23:53:14,393 INFO L158 Benchmark]: RCFGBuilder took 534.38ms. Allocated memory was 178.3MB in the beginning and 241.2MB in the end (delta: 62.9MB). Free memory was 82.2MB in the beginning and 194.8MB in the end (delta: -112.6MB). Peak memory consumption was 20.4MB. Max. memory is 16.1GB. [2024-10-14 23:53:14,393 INFO L158 Benchmark]: TraceAbstraction took 8267.98ms. Allocated memory is still 241.2MB. Free memory was 194.8MB in the beginning and 94.7MB in the end (delta: 100.1MB). Peak memory consumption was 101.1MB. Max. memory is 16.1GB. [2024-10-14 23:53:14,393 INFO L158 Benchmark]: Witness Printer took 91.28ms. Allocated memory is still 241.2MB. Free memory was 94.7MB in the beginning and 90.5MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-14 23:53:14,395 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.00ms. Allocated memory is still 178.3MB. Free memory is still 147.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 664.08ms. Allocated memory is still 178.3MB. Free memory was 117.5MB in the beginning and 86.9MB in the end (delta: 30.6MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 48.19ms. Allocated memory is still 178.3MB. Free memory was 86.9MB in the beginning and 84.6MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 52.94ms. Allocated memory is still 178.3MB. Free memory was 84.6MB in the beginning and 82.2MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 534.38ms. Allocated memory was 178.3MB in the beginning and 241.2MB in the end (delta: 62.9MB). Free memory was 82.2MB in the beginning and 194.8MB in the end (delta: -112.6MB). Peak memory consumption was 20.4MB. Max. memory is 16.1GB. * TraceAbstraction took 8267.98ms. Allocated memory is still 241.2MB. Free memory was 194.8MB in the beginning and 94.7MB in the end (delta: 100.1MB). Peak memory consumption was 101.1MB. Max. memory is 16.1GB. * Witness Printer took 91.28ms. Allocated memory is still 241.2MB. Free memory was 94.7MB in the beginning and 90.5MB 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: 936]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 936]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 943]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 943]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 931]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 931]: 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: 8.2s, OverallIterations: 16, TraceHistogramMax: 10, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 468 SdHoareTripleChecker+Valid, 1.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 389 mSDsluCounter, 301 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 241 mSDsCounter, 41 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1431 IncrementalHoareTripleChecker+Invalid, 1472 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 41 mSolverCounterUnsat, 60 mSDtfsCounter, 1431 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 293 GetRequests, 126 SyntacticMatches, 11 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 612 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=370occurred in iteration=8, InterpolantAutomatonStates: 119, 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: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.6s InterpolantComputationTime, 551 NumberOfCodeBlocks, 521 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 581 ConstructedInterpolants, 2 QuantifiedInterpolants, 3188 SizeOfPredicates, 23 NumberOfNonLiveVariables, 423 ConjunctsInSsa, 43 ConjunctsInUnsatCore, 25 InterpolantComputations, 13 PerfectInterpolantSequences, 1247/1580 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! [2024-10-14 23:53:14,427 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