./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/goblint-regression/06-symbeq_02-funloop_norace.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/goblint-regression/06-symbeq_02-funloop_norace.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 ebedbc62bd44b0c214a81c07c6f99e850a5d96675b77716f8547d1b39e8b2cf8 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-23 01:50:01,484 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 01:50:01,540 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-23 01:50:01,544 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 01:50:01,544 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 01:50:01,574 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 01:50:01,574 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 01:50:01,575 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 01:50:01,575 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 01:50:01,575 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 01:50:01,576 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 01:50:01,586 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 01:50:01,586 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 01:50:01,587 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 01:50:01,587 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 01:50:01,587 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 01:50:01,587 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 01:50:01,588 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-23 01:50:01,588 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 01:50:01,588 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-23 01:50:01,588 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 01:50:01,591 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 01:50:01,591 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 01:50:01,591 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 01:50:01,591 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-23 01:50:01,592 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-23 01:50:01,592 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-23 01:50:01,592 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-23 01:50:01,592 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 01:50:01,592 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 01:50:01,593 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 01:50:01,593 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 01:50:01,593 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 01:50:01,593 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 01:50:01,593 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 01:50:01,594 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 01:50:01,594 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 01:50:01,594 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 01:50:01,596 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 01:50:01,596 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 01:50:01,596 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 01:50:01,597 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 01:50:01,597 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 01:50:01,597 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 01:50:01,597 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ebedbc62bd44b0c214a81c07c6f99e850a5d96675b77716f8547d1b39e8b2cf8 [2024-11-23 01:50:01,794 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 01:50:01,818 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 01:50:01,821 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 01:50:01,822 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 01:50:01,822 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 01:50:01,823 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/06-symbeq_02-funloop_norace.i [2024-11-23 01:50:03,304 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-23 01:50:03,541 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 01:50:03,542 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/06-symbeq_02-funloop_norace.i [2024-11-23 01:50:03,561 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/53f4c5da5/95639f54d4e540b789e81fe63b6340ac/FLAG62ee01490 [2024-11-23 01:50:03,876 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/53f4c5da5/95639f54d4e540b789e81fe63b6340ac [2024-11-23 01:50:03,878 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 01:50:03,879 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 01:50:03,880 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 01:50:03,880 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 01:50:03,884 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 01:50:03,884 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:50:03" (1/1) ... [2024-11-23 01:50:03,885 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b6fe2f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:50:03, skipping insertion in model container [2024-11-23 01:50:03,885 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:50:03" (1/1) ... [2024-11-23 01:50:03,918 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 01:50:04,291 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 01:50:04,342 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 01:50:04,413 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 01:50:04,484 INFO L204 MainTranslator]: Completed translation [2024-11-23 01:50:04,484 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:50:04 WrapperNode [2024-11-23 01:50:04,484 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 01:50:04,485 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 01:50:04,486 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 01:50:04,486 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 01:50:04,491 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:50:04" (1/1) ... [2024-11-23 01:50:04,510 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:50:04" (1/1) ... [2024-11-23 01:50:04,580 INFO L138 Inliner]: procedures = 263, calls = 70, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 142 [2024-11-23 01:50:04,581 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 01:50:04,581 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 01:50:04,581 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 01:50:04,581 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 01:50:04,591 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:50:04" (1/1) ... [2024-11-23 01:50:04,591 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:50:04" (1/1) ... [2024-11-23 01:50:04,594 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:50:04" (1/1) ... [2024-11-23 01:50:04,615 INFO L175 MemorySlicer]: Split 64 memory accesses to 1 slices as follows [64]. 100 percent of accesses are in the largest equivalence class. The 60 initializations are split as follows [60]. The 2 writes are split as follows [2]. [2024-11-23 01:50:04,618 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:50:04" (1/1) ... [2024-11-23 01:50:04,618 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:50:04" (1/1) ... [2024-11-23 01:50:04,629 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:50:04" (1/1) ... [2024-11-23 01:50:04,640 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:50:04" (1/1) ... [2024-11-23 01:50:04,641 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:50:04" (1/1) ... [2024-11-23 01:50:04,646 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:50:04" (1/1) ... [2024-11-23 01:50:04,648 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 01:50:04,649 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 01:50:04,649 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 01:50:04,649 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 01:50:04,654 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:50:04" (1/1) ... [2024-11-23 01:50:04,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 01:50:04,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:50:04,714 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-23 01:50:04,723 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-23 01:50:04,791 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-23 01:50:04,792 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-23 01:50:04,792 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-23 01:50:04,792 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-23 01:50:04,792 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 01:50:04,792 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-23 01:50:04,792 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-23 01:50:04,792 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-23 01:50:04,793 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 01:50:04,794 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 01:50:04,795 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-23 01:50:05,017 INFO L238 CfgBuilder]: Building ICFG [2024-11-23 01:50:05,019 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 01:50:05,384 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-23 01:50:05,386 INFO L287 CfgBuilder]: Performing block encoding [2024-11-23 01:50:05,994 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 01:50:05,994 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-23 01:50:05,994 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:50:05 BoogieIcfgContainer [2024-11-23 01:50:05,995 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 01:50:05,996 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 01:50:05,996 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 01:50:05,999 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 01:50:05,999 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:50:03" (1/3) ... [2024-11-23 01:50:05,999 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@267e49fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:50:05, skipping insertion in model container [2024-11-23 01:50:06,002 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:50:04" (2/3) ... [2024-11-23 01:50:06,003 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@267e49fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:50:06, skipping insertion in model container [2024-11-23 01:50:06,003 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:50:05" (3/3) ... [2024-11-23 01:50:06,007 INFO L112 eAbstractionObserver]: Analyzing ICFG 06-symbeq_02-funloop_norace.i [2024-11-23 01:50:06,029 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 01:50:06,030 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2024-11-23 01:50:06,033 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-23 01:50:06,078 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-23 01:50:06,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 40 places, 39 transitions, 82 flow [2024-11-23 01:50:06,166 INFO L124 PetriNetUnfolderBase]: 3/38 cut-off events. [2024-11-23 01:50:06,168 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-23 01:50:06,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42 conditions, 38 events. 3/38 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 70 event pairs, 0 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 30. Up to 2 conditions per place. [2024-11-23 01:50:06,171 INFO L82 GeneralOperation]: Start removeDead. Operand has 40 places, 39 transitions, 82 flow [2024-11-23 01:50:06,175 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 39 places, 38 transitions, 79 flow [2024-11-23 01:50:06,184 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 01:50:06,190 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;@5cfc2c2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 01:50:06,191 INFO L334 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2024-11-23 01:50:06,195 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-23 01:50:06,195 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-23 01:50:06,196 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-23 01:50:06,196 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:50:06,196 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-23 01:50:06,197 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-11-23 01:50:06,200 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:50:06,201 INFO L85 PathProgramCache]: Analyzing trace with hash 369336, now seen corresponding path program 1 times [2024-11-23 01:50:06,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:50:06,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10846445] [2024-11-23 01:50:06,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:50:06,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:50:06,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:50:06,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:50:06,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:50:06,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10846445] [2024-11-23 01:50:06,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10846445] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:50:06,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:50:06,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 01:50:06,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832519742] [2024-11-23 01:50:06,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:50:06,596 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 01:50:06,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:50:06,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 01:50:06,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 01:50:06,631 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 39 [2024-11-23 01:50:06,633 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 38 transitions, 79 flow. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:50:06,634 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:50:06,634 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 39 [2024-11-23 01:50:06,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:50:06,782 INFO L124 PetriNetUnfolderBase]: 83/260 cut-off events. [2024-11-23 01:50:06,783 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-23 01:50:06,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 436 conditions, 260 events. 83/260 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1144 event pairs, 64 based on Foata normal form. 1/210 useless extension candidates. Maximal degree in co-relation 411. Up to 170 conditions per place. [2024-11-23 01:50:06,787 INFO L140 encePairwiseOnDemand]: 33/39 looper letters, 24 selfloop transitions, 3 changer transitions 0/40 dead transitions. [2024-11-23 01:50:06,788 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 40 transitions, 137 flow [2024-11-23 01:50:06,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 01:50:06,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 01:50:06,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 86 transitions. [2024-11-23 01:50:06,798 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5512820512820513 [2024-11-23 01:50:06,800 INFO L175 Difference]: Start difference. First operand has 39 places, 38 transitions, 79 flow. Second operand 4 states and 86 transitions. [2024-11-23 01:50:06,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 40 transitions, 137 flow [2024-11-23 01:50:06,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 40 transitions, 136 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-23 01:50:06,805 INFO L231 Difference]: Finished difference. Result has 43 places, 40 transitions, 102 flow [2024-11-23 01:50:06,807 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=102, PETRI_PLACES=43, PETRI_TRANSITIONS=40} [2024-11-23 01:50:06,809 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 4 predicate places. [2024-11-23 01:50:06,810 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 40 transitions, 102 flow [2024-11-23 01:50:06,810 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:50:06,810 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:50:06,810 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-23 01:50:06,811 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-23 01:50:06,811 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-11-23 01:50:06,811 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:50:06,811 INFO L85 PathProgramCache]: Analyzing trace with hash -1881648581, now seen corresponding path program 1 times [2024-11-23 01:50:06,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:50:06,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632524687] [2024-11-23 01:50:06,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:50:06,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:50:06,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:50:06,962 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:50:06,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:50:06,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632524687] [2024-11-23 01:50:06,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632524687] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:50:06,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [229636124] [2024-11-23 01:50:06,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:50:06,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:50:06,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:50:06,966 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 01:50:06,967 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-23 01:50:07,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:50:07,085 INFO L255 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-23 01:50:07,087 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:50:07,162 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:50:07,163 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 01:50:07,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [229636124] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:50:07,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 01:50:07,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-23 01:50:07,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121723538] [2024-11-23 01:50:07,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:50:07,165 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 01:50:07,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:50:07,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 01:50:07,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-23 01:50:07,174 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 39 [2024-11-23 01:50:07,175 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 40 transitions, 102 flow. Second operand has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 6 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:50:07,175 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:50:07,175 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 39 [2024-11-23 01:50:07,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:50:07,457 INFO L124 PetriNetUnfolderBase]: 83/259 cut-off events. [2024-11-23 01:50:07,457 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-23 01:50:07,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 445 conditions, 259 events. 83/259 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1140 event pairs, 64 based on Foata normal form. 1/209 useless extension candidates. Maximal degree in co-relation 428. Up to 165 conditions per place. [2024-11-23 01:50:07,460 INFO L140 encePairwiseOnDemand]: 34/39 looper letters, 20 selfloop transitions, 6 changer transitions 0/39 dead transitions. [2024-11-23 01:50:07,460 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 39 transitions, 150 flow [2024-11-23 01:50:07,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 01:50:07,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-23 01:50:07,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 111 transitions. [2024-11-23 01:50:07,462 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47435897435897434 [2024-11-23 01:50:07,462 INFO L175 Difference]: Start difference. First operand has 43 places, 40 transitions, 102 flow. Second operand 6 states and 111 transitions. [2024-11-23 01:50:07,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 39 transitions, 150 flow [2024-11-23 01:50:07,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 39 transitions, 148 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-23 01:50:07,464 INFO L231 Difference]: Finished difference. Result has 46 places, 39 transitions, 108 flow [2024-11-23 01:50:07,464 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=108, PETRI_PLACES=46, PETRI_TRANSITIONS=39} [2024-11-23 01:50:07,464 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 7 predicate places. [2024-11-23 01:50:07,465 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 39 transitions, 108 flow [2024-11-23 01:50:07,465 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 6 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:50:07,465 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:50:07,465 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-23 01:50:07,475 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-23 01:50:07,669 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:50:07,670 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-11-23 01:50:07,671 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:50:07,671 INFO L85 PathProgramCache]: Analyzing trace with hash 1798436500, now seen corresponding path program 1 times [2024-11-23 01:50:07,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:50:07,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197278210] [2024-11-23 01:50:07,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:50:07,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:50:07,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:50:07,747 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-23 01:50:07,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:50:07,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197278210] [2024-11-23 01:50:07,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197278210] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:50:07,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:50:07,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 01:50:07,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113726682] [2024-11-23 01:50:07,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:50:07,749 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 01:50:07,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:50:07,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 01:50:07,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 01:50:07,753 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 39 [2024-11-23 01:50:07,754 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 39 transitions, 108 flow. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:50:07,754 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:50:07,755 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 39 [2024-11-23 01:50:07,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:50:07,841 INFO L124 PetriNetUnfolderBase]: 83/258 cut-off events. [2024-11-23 01:50:07,842 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-23 01:50:07,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 447 conditions, 258 events. 83/258 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1142 event pairs, 64 based on Foata normal form. 1/209 useless extension candidates. Maximal degree in co-relation 424. Up to 168 conditions per place. [2024-11-23 01:50:07,844 INFO L140 encePairwiseOnDemand]: 36/39 looper letters, 21 selfloop transitions, 4 changer transitions 0/38 dead transitions. [2024-11-23 01:50:07,844 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 38 transitions, 154 flow [2024-11-23 01:50:07,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 01:50:07,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-23 01:50:07,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 66 transitions. [2024-11-23 01:50:07,847 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5641025641025641 [2024-11-23 01:50:07,847 INFO L175 Difference]: Start difference. First operand has 46 places, 39 transitions, 108 flow. Second operand 3 states and 66 transitions. [2024-11-23 01:50:07,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 38 transitions, 154 flow [2024-11-23 01:50:07,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 38 transitions, 132 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-11-23 01:50:07,849 INFO L231 Difference]: Finished difference. Result has 41 places, 38 transitions, 90 flow [2024-11-23 01:50:07,849 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=41, PETRI_TRANSITIONS=38} [2024-11-23 01:50:07,849 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 2 predicate places. [2024-11-23 01:50:07,850 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 38 transitions, 90 flow [2024-11-23 01:50:07,850 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:50:07,850 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:50:07,850 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:50:07,850 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-23 01:50:07,851 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-11-23 01:50:07,851 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:50:07,851 INFO L85 PathProgramCache]: Analyzing trace with hash 1565500079, now seen corresponding path program 1 times [2024-11-23 01:50:07,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:50:07,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676056060] [2024-11-23 01:50:07,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:50:07,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:50:07,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:50:07,912 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:50:07,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:50:07,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676056060] [2024-11-23 01:50:07,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676056060] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:50:07,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [657839723] [2024-11-23 01:50:07,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:50:07,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:50:07,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:50:07,917 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 01:50:07,935 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-23 01:50:08,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:50:08,011 INFO L255 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-23 01:50:08,012 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:50:08,031 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:50:08,031 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 01:50:08,061 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:50:08,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [657839723] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 01:50:08,062 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 01:50:08,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-11-23 01:50:08,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427089604] [2024-11-23 01:50:08,062 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 01:50:08,063 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-23 01:50:08,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:50:08,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-23 01:50:08,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-23 01:50:08,074 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 39 [2024-11-23 01:50:08,076 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 38 transitions, 90 flow. Second operand has 10 states, 10 states have (on average 15.6) internal successors, (156), 10 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:50:08,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:50:08,077 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 39 [2024-11-23 01:50:08,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:50:08,160 INFO L124 PetriNetUnfolderBase]: 83/262 cut-off events. [2024-11-23 01:50:08,161 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2024-11-23 01:50:08,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 450 conditions, 262 events. 83/262 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1139 event pairs, 64 based on Foata normal form. 2/215 useless extension candidates. Maximal degree in co-relation 417. Up to 166 conditions per place. [2024-11-23 01:50:08,162 INFO L140 encePairwiseOnDemand]: 35/39 looper letters, 21 selfloop transitions, 7 changer transitions 0/41 dead transitions. [2024-11-23 01:50:08,162 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 41 transitions, 161 flow [2024-11-23 01:50:08,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-23 01:50:08,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-23 01:50:08,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 128 transitions. [2024-11-23 01:50:08,164 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46886446886446886 [2024-11-23 01:50:08,164 INFO L175 Difference]: Start difference. First operand has 41 places, 38 transitions, 90 flow. Second operand 7 states and 128 transitions. [2024-11-23 01:50:08,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 41 transitions, 161 flow [2024-11-23 01:50:08,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 41 transitions, 147 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-23 01:50:08,165 INFO L231 Difference]: Finished difference. Result has 47 places, 41 transitions, 116 flow [2024-11-23 01:50:08,165 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=116, PETRI_PLACES=47, PETRI_TRANSITIONS=41} [2024-11-23 01:50:08,165 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 8 predicate places. [2024-11-23 01:50:08,165 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 41 transitions, 116 flow [2024-11-23 01:50:08,166 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.6) internal successors, (156), 10 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:50:08,166 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:50:08,166 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:50:08,172 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-23 01:50:08,370 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-23 01:50:08,371 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-11-23 01:50:08,372 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:50:08,372 INFO L85 PathProgramCache]: Analyzing trace with hash -1159090225, now seen corresponding path program 2 times [2024-11-23 01:50:08,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:50:08,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395391918] [2024-11-23 01:50:08,373 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 01:50:08,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:50:08,387 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-23 01:50:08,387 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 01:50:08,515 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-23 01:50:08,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:50:08,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395391918] [2024-11-23 01:50:08,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395391918] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:50:08,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:50:08,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 01:50:08,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143153547] [2024-11-23 01:50:08,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:50:08,517 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 01:50:08,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:50:08,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 01:50:08,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-23 01:50:08,522 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 39 [2024-11-23 01:50:08,524 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 41 transitions, 116 flow. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:50:08,524 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:50:08,524 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 39 [2024-11-23 01:50:08,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:50:08,685 INFO L124 PetriNetUnfolderBase]: 159/393 cut-off events. [2024-11-23 01:50:08,686 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2024-11-23 01:50:08,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 740 conditions, 393 events. 159/393 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1682 event pairs, 16 based on Foata normal form. 0/318 useless extension candidates. Maximal degree in co-relation 702. Up to 189 conditions per place. [2024-11-23 01:50:08,694 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 61 selfloop transitions, 11 changer transitions 0/82 dead transitions. [2024-11-23 01:50:08,695 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 82 transitions, 342 flow [2024-11-23 01:50:08,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-23 01:50:08,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-23 01:50:08,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 161 transitions. [2024-11-23 01:50:08,696 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5897435897435898 [2024-11-23 01:50:08,696 INFO L175 Difference]: Start difference. First operand has 47 places, 41 transitions, 116 flow. Second operand 7 states and 161 transitions. [2024-11-23 01:50:08,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 82 transitions, 342 flow [2024-11-23 01:50:08,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 82 transitions, 338 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-23 01:50:08,698 INFO L231 Difference]: Finished difference. Result has 57 places, 51 transitions, 194 flow [2024-11-23 01:50:08,698 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=194, PETRI_PLACES=57, PETRI_TRANSITIONS=51} [2024-11-23 01:50:08,699 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 18 predicate places. [2024-11-23 01:50:08,699 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 51 transitions, 194 flow [2024-11-23 01:50:08,699 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:50:08,699 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:50:08,699 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:50:08,699 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-23 01:50:08,700 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-11-23 01:50:08,700 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:50:08,700 INFO L85 PathProgramCache]: Analyzing trace with hash -1137976208, now seen corresponding path program 1 times [2024-11-23 01:50:08,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:50:08,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232619156] [2024-11-23 01:50:08,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:50:08,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:50:08,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:50:08,788 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:50:08,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:50:08,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232619156] [2024-11-23 01:50:08,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232619156] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:50:08,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1254711930] [2024-11-23 01:50:08,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:50:08,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:50:08,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:50:08,791 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 01:50:08,792 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-23 01:50:08,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:50:08,847 INFO L255 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-23 01:50:08,848 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:50:08,872 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:50:08,872 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 01:50:08,936 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:50:08,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1254711930] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 01:50:08,937 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 01:50:08,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2024-11-23 01:50:08,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746237829] [2024-11-23 01:50:08,937 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 01:50:08,938 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-23 01:50:08,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:50:08,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-23 01:50:08,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2024-11-23 01:50:08,954 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 39 [2024-11-23 01:50:08,955 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 51 transitions, 194 flow. Second operand has 18 states, 18 states have (on average 15.333333333333334) internal successors, (276), 18 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:50:08,955 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:50:08,955 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 39 [2024-11-23 01:50:08,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:50:09,129 INFO L124 PetriNetUnfolderBase]: 121/380 cut-off events. [2024-11-23 01:50:09,129 INFO L125 PetriNetUnfolderBase]: For 153/161 co-relation queries the response was YES. [2024-11-23 01:50:09,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 859 conditions, 380 events. 121/380 cut-off events. For 153/161 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1788 event pairs, 68 based on Foata normal form. 4/331 useless extension candidates. Maximal degree in co-relation 779. Up to 241 conditions per place. [2024-11-23 01:50:09,131 INFO L140 encePairwiseOnDemand]: 35/39 looper letters, 30 selfloop transitions, 15 changer transitions 0/59 dead transitions. [2024-11-23 01:50:09,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 59 transitions, 332 flow [2024-11-23 01:50:09,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-23 01:50:09,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-23 01:50:09,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 250 transitions. [2024-11-23 01:50:09,136 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42735042735042733 [2024-11-23 01:50:09,136 INFO L175 Difference]: Start difference. First operand has 57 places, 51 transitions, 194 flow. Second operand 15 states and 250 transitions. [2024-11-23 01:50:09,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 59 transitions, 332 flow [2024-11-23 01:50:09,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 59 transitions, 332 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-23 01:50:09,141 INFO L231 Difference]: Finished difference. Result has 75 places, 59 transitions, 291 flow [2024-11-23 01:50:09,142 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=291, PETRI_PLACES=75, PETRI_TRANSITIONS=59} [2024-11-23 01:50:09,142 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 36 predicate places. [2024-11-23 01:50:09,142 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 59 transitions, 291 flow [2024-11-23 01:50:09,142 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 15.333333333333334) internal successors, (276), 18 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:50:09,143 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:50:09,143 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:50:09,149 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-23 01:50:09,343 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:50:09,343 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-11-23 01:50:09,344 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:50:09,344 INFO L85 PathProgramCache]: Analyzing trace with hash -1973490000, now seen corresponding path program 2 times [2024-11-23 01:50:09,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:50:09,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112358196] [2024-11-23 01:50:09,344 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 01:50:09,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:50:09,369 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-23 01:50:09,369 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 01:50:09,485 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-23 01:50:09,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:50:09,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112358196] [2024-11-23 01:50:09,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112358196] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:50:09,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:50:09,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 01:50:09,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119731748] [2024-11-23 01:50:09,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:50:09,486 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 01:50:09,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:50:09,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 01:50:09,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-23 01:50:09,492 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 39 [2024-11-23 01:50:09,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 59 transitions, 291 flow. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:50:09,493 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:50:09,493 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 39 [2024-11-23 01:50:09,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:50:09,674 INFO L124 PetriNetUnfolderBase]: 145/409 cut-off events. [2024-11-23 01:50:09,674 INFO L125 PetriNetUnfolderBase]: For 223/237 co-relation queries the response was YES. [2024-11-23 01:50:09,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 990 conditions, 409 events. 145/409 cut-off events. For 223/237 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1875 event pairs, 36 based on Foata normal form. 26/394 useless extension candidates. Maximal degree in co-relation 885. Up to 236 conditions per place. [2024-11-23 01:50:09,676 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 63 selfloop transitions, 14 changer transitions 0/89 dead transitions. [2024-11-23 01:50:09,676 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 89 transitions, 567 flow [2024-11-23 01:50:09,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-23 01:50:09,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-23 01:50:09,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 162 transitions. [2024-11-23 01:50:09,678 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5934065934065934 [2024-11-23 01:50:09,678 INFO L175 Difference]: Start difference. First operand has 75 places, 59 transitions, 291 flow. Second operand 7 states and 162 transitions. [2024-11-23 01:50:09,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 89 transitions, 567 flow [2024-11-23 01:50:09,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 89 transitions, 557 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-11-23 01:50:09,681 INFO L231 Difference]: Finished difference. Result has 82 places, 67 transitions, 379 flow [2024-11-23 01:50:09,681 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=281, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=379, PETRI_PLACES=82, PETRI_TRANSITIONS=67} [2024-11-23 01:50:09,682 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 43 predicate places. [2024-11-23 01:50:09,682 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 67 transitions, 379 flow [2024-11-23 01:50:09,682 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:50:09,682 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:50:09,682 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:50:09,683 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-23 01:50:09,683 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-11-23 01:50:09,683 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:50:09,683 INFO L85 PathProgramCache]: Analyzing trace with hash -1703182031, now seen corresponding path program 1 times [2024-11-23 01:50:09,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:50:09,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818717266] [2024-11-23 01:50:09,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:50:09,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:50:09,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:50:09,902 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:50:09,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:50:09,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818717266] [2024-11-23 01:50:09,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818717266] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:50:09,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1040427843] [2024-11-23 01:50:09,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:50:09,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:50:09,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:50:09,906 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 01:50:09,906 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-23 01:50:09,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:50:09,972 INFO L255 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-23 01:50:09,973 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:50:10,038 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:50:10,039 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 01:50:10,190 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:50:10,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1040427843] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 01:50:10,191 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 01:50:10,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 22 [2024-11-23 01:50:10,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698973702] [2024-11-23 01:50:10,191 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 01:50:10,191 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-23 01:50:10,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:50:10,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-23 01:50:10,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2024-11-23 01:50:10,218 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 39 [2024-11-23 01:50:10,219 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 67 transitions, 379 flow. Second operand has 23 states, 23 states have (on average 15.304347826086957) internal successors, (352), 23 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:50:10,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:50:10,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 39 [2024-11-23 01:50:10,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:50:10,390 INFO L124 PetriNetUnfolderBase]: 125/393 cut-off events. [2024-11-23 01:50:10,390 INFO L125 PetriNetUnfolderBase]: For 367/379 co-relation queries the response was YES. [2024-11-23 01:50:10,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1099 conditions, 393 events. 125/393 cut-off events. For 367/379 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1821 event pairs, 52 based on Foata normal form. 3/361 useless extension candidates. Maximal degree in co-relation 956. Up to 248 conditions per place. [2024-11-23 01:50:10,393 INFO L140 encePairwiseOnDemand]: 35/39 looper letters, 38 selfloop transitions, 21 changer transitions 0/73 dead transitions. [2024-11-23 01:50:10,393 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 73 transitions, 551 flow [2024-11-23 01:50:10,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-23 01:50:10,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-23 01:50:10,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 339 transitions. [2024-11-23 01:50:10,394 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4139194139194139 [2024-11-23 01:50:10,394 INFO L175 Difference]: Start difference. First operand has 82 places, 67 transitions, 379 flow. Second operand 21 states and 339 transitions. [2024-11-23 01:50:10,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 73 transitions, 551 flow [2024-11-23 01:50:10,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 73 transitions, 541 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-23 01:50:10,397 INFO L231 Difference]: Finished difference. Result has 104 places, 73 transitions, 480 flow [2024-11-23 01:50:10,397 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=369, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=480, PETRI_PLACES=104, PETRI_TRANSITIONS=73} [2024-11-23 01:50:10,398 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 65 predicate places. [2024-11-23 01:50:10,398 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 73 transitions, 480 flow [2024-11-23 01:50:10,398 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 15.304347826086957) internal successors, (352), 23 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:50:10,398 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:50:10,398 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:50:10,409 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-23 01:50:10,599 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:50:10,599 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-11-23 01:50:10,600 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:50:10,600 INFO L85 PathProgramCache]: Analyzing trace with hash 1870638318, now seen corresponding path program 2 times [2024-11-23 01:50:10,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:50:10,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140248804] [2024-11-23 01:50:10,600 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 01:50:10,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:50:10,621 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-23 01:50:10,621 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 01:50:10,707 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-23 01:50:10,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:50:10,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140248804] [2024-11-23 01:50:10,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140248804] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:50:10,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:50:10,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 01:50:10,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749004602] [2024-11-23 01:50:10,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:50:10,708 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 01:50:10,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:50:10,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 01:50:10,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-23 01:50:10,719 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 39 [2024-11-23 01:50:10,719 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 73 transitions, 480 flow. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:50:10,719 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:50:10,719 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 39 [2024-11-23 01:50:10,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:50:10,864 INFO L124 PetriNetUnfolderBase]: 145/412 cut-off events. [2024-11-23 01:50:10,864 INFO L125 PetriNetUnfolderBase]: For 425/441 co-relation queries the response was YES. [2024-11-23 01:50:10,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1188 conditions, 412 events. 145/412 cut-off events. For 425/441 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1867 event pairs, 34 based on Foata normal form. 15/387 useless extension candidates. Maximal degree in co-relation 1017. Up to 236 conditions per place. [2024-11-23 01:50:10,870 INFO L140 encePairwiseOnDemand]: 32/39 looper letters, 71 selfloop transitions, 13 changer transitions 0/96 dead transitions. [2024-11-23 01:50:10,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 96 transitions, 744 flow [2024-11-23 01:50:10,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-23 01:50:10,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-23 01:50:10,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 159 transitions. [2024-11-23 01:50:10,872 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5824175824175825 [2024-11-23 01:50:10,872 INFO L175 Difference]: Start difference. First operand has 104 places, 73 transitions, 480 flow. Second operand 7 states and 159 transitions. [2024-11-23 01:50:10,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 96 transitions, 744 flow [2024-11-23 01:50:10,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 96 transitions, 701 flow, removed 1 selfloop flow, removed 13 redundant places. [2024-11-23 01:50:10,876 INFO L231 Difference]: Finished difference. Result has 99 places, 74 transitions, 483 flow [2024-11-23 01:50:10,876 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=437, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=483, PETRI_PLACES=99, PETRI_TRANSITIONS=74} [2024-11-23 01:50:10,877 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 60 predicate places. [2024-11-23 01:50:10,877 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 74 transitions, 483 flow [2024-11-23 01:50:10,877 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:50:10,878 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:50:10,878 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:50:10,878 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-23 01:50:10,878 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-11-23 01:50:10,878 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:50:10,878 INFO L85 PathProgramCache]: Analyzing trace with hash 985825139, now seen corresponding path program 1 times [2024-11-23 01:50:10,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:50:10,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375677786] [2024-11-23 01:50:10,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:50:10,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:50:10,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:50:10,941 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-23 01:50:10,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:50:10,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375677786] [2024-11-23 01:50:10,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375677786] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:50:10,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:50:10,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 01:50:10,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643912785] [2024-11-23 01:50:10,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:50:10,943 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 01:50:10,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:50:10,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 01:50:10,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 01:50:10,946 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 39 [2024-11-23 01:50:10,946 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 74 transitions, 483 flow. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:50:10,946 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:50:10,946 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 39 [2024-11-23 01:50:10,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:50:11,069 INFO L124 PetriNetUnfolderBase]: 208/562 cut-off events. [2024-11-23 01:50:11,069 INFO L125 PetriNetUnfolderBase]: For 609/643 co-relation queries the response was YES. [2024-11-23 01:50:11,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1648 conditions, 562 events. 208/562 cut-off events. For 609/643 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2580 event pairs, 49 based on Foata normal form. 12/529 useless extension candidates. Maximal degree in co-relation 1495. Up to 250 conditions per place. [2024-11-23 01:50:11,072 INFO L140 encePairwiseOnDemand]: 33/39 looper letters, 89 selfloop transitions, 4 changer transitions 0/105 dead transitions. [2024-11-23 01:50:11,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 105 transitions, 789 flow [2024-11-23 01:50:11,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 01:50:11,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 01:50:11,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 109 transitions. [2024-11-23 01:50:11,074 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6987179487179487 [2024-11-23 01:50:11,075 INFO L175 Difference]: Start difference. First operand has 99 places, 74 transitions, 483 flow. Second operand 4 states and 109 transitions. [2024-11-23 01:50:11,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 105 transitions, 789 flow [2024-11-23 01:50:11,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 105 transitions, 765 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-23 01:50:11,080 INFO L231 Difference]: Finished difference. Result has 99 places, 76 transitions, 486 flow [2024-11-23 01:50:11,082 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=459, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=486, PETRI_PLACES=99, PETRI_TRANSITIONS=76} [2024-11-23 01:50:11,082 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 60 predicate places. [2024-11-23 01:50:11,082 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 76 transitions, 486 flow [2024-11-23 01:50:11,082 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:50:11,083 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:50:11,083 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:50:11,083 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-23 01:50:11,083 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-11-23 01:50:11,083 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:50:11,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1073587094, now seen corresponding path program 1 times [2024-11-23 01:50:11,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:50:11,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484210716] [2024-11-23 01:50:11,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:50:11,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:50:11,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:50:11,169 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-23 01:50:11,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:50:11,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484210716] [2024-11-23 01:50:11,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484210716] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:50:11,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:50:11,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 01:50:11,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688006046] [2024-11-23 01:50:11,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:50:11,173 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 01:50:11,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:50:11,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 01:50:11,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 01:50:11,179 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 39 [2024-11-23 01:50:11,179 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 76 transitions, 486 flow. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:50:11,180 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:50:11,180 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 39 [2024-11-23 01:50:11,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:50:11,318 INFO L124 PetriNetUnfolderBase]: 318/861 cut-off events. [2024-11-23 01:50:11,318 INFO L125 PetriNetUnfolderBase]: For 988/1034 co-relation queries the response was YES. [2024-11-23 01:50:11,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2477 conditions, 861 events. 318/861 cut-off events. For 988/1034 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 4371 event pairs, 142 based on Foata normal form. 19/845 useless extension candidates. Maximal degree in co-relation 2323. Up to 400 conditions per place. [2024-11-23 01:50:11,324 INFO L140 encePairwiseOnDemand]: 33/39 looper letters, 95 selfloop transitions, 4 changer transitions 0/111 dead transitions. [2024-11-23 01:50:11,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 111 transitions, 854 flow [2024-11-23 01:50:11,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 01:50:11,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 01:50:11,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 109 transitions. [2024-11-23 01:50:11,325 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6987179487179487 [2024-11-23 01:50:11,325 INFO L175 Difference]: Start difference. First operand has 99 places, 76 transitions, 486 flow. Second operand 4 states and 109 transitions. [2024-11-23 01:50:11,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 111 transitions, 854 flow [2024-11-23 01:50:11,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 111 transitions, 846 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-23 01:50:11,331 INFO L231 Difference]: Finished difference. Result has 103 places, 78 transitions, 510 flow [2024-11-23 01:50:11,331 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=483, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=510, PETRI_PLACES=103, PETRI_TRANSITIONS=78} [2024-11-23 01:50:11,332 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 64 predicate places. [2024-11-23 01:50:11,332 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 78 transitions, 510 flow [2024-11-23 01:50:11,332 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:50:11,332 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:50:11,333 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:50:11,333 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-23 01:50:11,333 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-11-23 01:50:11,333 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:50:11,333 INFO L85 PathProgramCache]: Analyzing trace with hash -1621961295, now seen corresponding path program 1 times [2024-11-23 01:50:11,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:50:11,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648532879] [2024-11-23 01:50:11,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:50:11,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:50:11,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:50:11,892 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-23 01:50:11,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:50:11,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648532879] [2024-11-23 01:50:11,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648532879] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:50:11,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:50:11,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-23 01:50:11,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598074111] [2024-11-23 01:50:11,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:50:11,893 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-23 01:50:11,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:50:11,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-23 01:50:11,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-11-23 01:50:11,908 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 39 [2024-11-23 01:50:11,908 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 78 transitions, 510 flow. Second operand has 10 states, 10 states have (on average 15.5) internal successors, (155), 10 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:50:11,908 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:50:11,908 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 39 [2024-11-23 01:50:11,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:50:12,292 INFO L124 PetriNetUnfolderBase]: 393/1048 cut-off events. [2024-11-23 01:50:12,292 INFO L125 PetriNetUnfolderBase]: For 1491/1515 co-relation queries the response was YES. [2024-11-23 01:50:12,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3265 conditions, 1048 events. 393/1048 cut-off events. For 1491/1515 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 5751 event pairs, 175 based on Foata normal form. 36/1080 useless extension candidates. Maximal degree in co-relation 3109. Up to 674 conditions per place. [2024-11-23 01:50:12,299 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 88 selfloop transitions, 40 changer transitions 0/140 dead transitions. [2024-11-23 01:50:12,299 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 140 transitions, 1101 flow [2024-11-23 01:50:12,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-23 01:50:12,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-23 01:50:12,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 304 transitions. [2024-11-23 01:50:12,301 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5196581196581197 [2024-11-23 01:50:12,301 INFO L175 Difference]: Start difference. First operand has 103 places, 78 transitions, 510 flow. Second operand 15 states and 304 transitions. [2024-11-23 01:50:12,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 140 transitions, 1101 flow [2024-11-23 01:50:12,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 140 transitions, 1096 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-23 01:50:12,307 INFO L231 Difference]: Finished difference. Result has 126 places, 108 transitions, 861 flow [2024-11-23 01:50:12,307 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=507, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=861, PETRI_PLACES=126, PETRI_TRANSITIONS=108} [2024-11-23 01:50:12,308 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 87 predicate places. [2024-11-23 01:50:12,308 INFO L471 AbstractCegarLoop]: Abstraction has has 126 places, 108 transitions, 861 flow [2024-11-23 01:50:12,308 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.5) internal successors, (155), 10 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:50:12,308 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:50:12,308 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:50:12,309 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-23 01:50:12,309 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-11-23 01:50:12,309 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:50:12,309 INFO L85 PathProgramCache]: Analyzing trace with hash 1157466582, now seen corresponding path program 1 times [2024-11-23 01:50:12,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:50:12,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326585255] [2024-11-23 01:50:12,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:50:12,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:50:12,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:50:12,575 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-23 01:50:12,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:50:12,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326585255] [2024-11-23 01:50:12,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326585255] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:50:12,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:50:12,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-23 01:50:12,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865150633] [2024-11-23 01:50:12,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:50:12,577 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-23 01:50:12,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:50:12,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-23 01:50:12,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-23 01:50:12,577 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 39 [2024-11-23 01:50:12,578 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 108 transitions, 861 flow. Second operand has 8 states, 8 states have (on average 17.75) internal successors, (142), 8 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:50:12,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:50:12,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 39 [2024-11-23 01:50:12,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:50:12,880 INFO L124 PetriNetUnfolderBase]: 444/1233 cut-off events. [2024-11-23 01:50:12,880 INFO L125 PetriNetUnfolderBase]: For 3177/3227 co-relation queries the response was YES. [2024-11-23 01:50:12,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4590 conditions, 1233 events. 444/1233 cut-off events. For 3177/3227 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 7264 event pairs, 136 based on Foata normal form. 11/1241 useless extension candidates. Maximal degree in co-relation 4423. Up to 367 conditions per place. [2024-11-23 01:50:12,888 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 167 selfloop transitions, 20 changer transitions 0/201 dead transitions. [2024-11-23 01:50:12,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 201 transitions, 1894 flow [2024-11-23 01:50:12,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-23 01:50:12,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-23 01:50:12,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 207 transitions. [2024-11-23 01:50:12,889 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6634615384615384 [2024-11-23 01:50:12,889 INFO L175 Difference]: Start difference. First operand has 126 places, 108 transitions, 861 flow. Second operand 8 states and 207 transitions. [2024-11-23 01:50:12,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 201 transitions, 1894 flow [2024-11-23 01:50:12,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 201 transitions, 1852 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-11-23 01:50:12,899 INFO L231 Difference]: Finished difference. Result has 136 places, 124 transitions, 1020 flow [2024-11-23 01:50:12,899 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=840, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1020, PETRI_PLACES=136, PETRI_TRANSITIONS=124} [2024-11-23 01:50:12,900 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 97 predicate places. [2024-11-23 01:50:12,900 INFO L471 AbstractCegarLoop]: Abstraction has has 136 places, 124 transitions, 1020 flow [2024-11-23 01:50:12,900 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.75) internal successors, (142), 8 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:50:12,900 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:50:12,900 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:50:12,900 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-23 01:50:12,901 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-11-23 01:50:12,901 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:50:12,901 INFO L85 PathProgramCache]: Analyzing trace with hash -628640448, now seen corresponding path program 2 times [2024-11-23 01:50:12,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:50:12,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354250889] [2024-11-23 01:50:12,901 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 01:50:12,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:50:12,912 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-23 01:50:12,913 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 01:50:13,041 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-23 01:50:13,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:50:13,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354250889] [2024-11-23 01:50:13,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354250889] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:50:13,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:50:13,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-23 01:50:13,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980944452] [2024-11-23 01:50:13,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:50:13,042 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-23 01:50:13,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:50:13,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-23 01:50:13,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-23 01:50:13,043 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 39 [2024-11-23 01:50:13,043 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 124 transitions, 1020 flow. Second operand has 8 states, 8 states have (on average 17.75) internal successors, (142), 8 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:50:13,043 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:50:13,043 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 39 [2024-11-23 01:50:13,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:50:13,342 INFO L124 PetriNetUnfolderBase]: 487/1322 cut-off events. [2024-11-23 01:50:13,342 INFO L125 PetriNetUnfolderBase]: For 4400/4470 co-relation queries the response was YES. [2024-11-23 01:50:13,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5487 conditions, 1322 events. 487/1322 cut-off events. For 4400/4470 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 7971 event pairs, 139 based on Foata normal form. 17/1330 useless extension candidates. Maximal degree in co-relation 5315. Up to 422 conditions per place. [2024-11-23 01:50:13,352 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 166 selfloop transitions, 36 changer transitions 0/216 dead transitions. [2024-11-23 01:50:13,353 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 216 transitions, 2127 flow [2024-11-23 01:50:13,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-23 01:50:13,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-23 01:50:13,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 203 transitions. [2024-11-23 01:50:13,354 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6506410256410257 [2024-11-23 01:50:13,354 INFO L175 Difference]: Start difference. First operand has 136 places, 124 transitions, 1020 flow. Second operand 8 states and 203 transitions. [2024-11-23 01:50:13,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 216 transitions, 2127 flow [2024-11-23 01:50:13,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 216 transitions, 2116 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-11-23 01:50:13,365 INFO L231 Difference]: Finished difference. Result has 147 places, 140 transitions, 1302 flow [2024-11-23 01:50:13,366 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1013, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1302, PETRI_PLACES=147, PETRI_TRANSITIONS=140} [2024-11-23 01:50:13,366 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 108 predicate places. [2024-11-23 01:50:13,366 INFO L471 AbstractCegarLoop]: Abstraction has has 147 places, 140 transitions, 1302 flow [2024-11-23 01:50:13,366 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.75) internal successors, (142), 8 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:50:13,366 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:50:13,367 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:50:13,367 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-23 01:50:13,367 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-11-23 01:50:13,367 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:50:13,367 INFO L85 PathProgramCache]: Analyzing trace with hash 1326086529, now seen corresponding path program 2 times [2024-11-23 01:50:13,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:50:13,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745916475] [2024-11-23 01:50:13,367 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 01:50:13,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:50:13,378 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-23 01:50:13,378 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 01:50:13,559 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-23 01:50:13,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:50:13,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745916475] [2024-11-23 01:50:13,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745916475] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:50:13,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:50:13,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-23 01:50:13,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232966687] [2024-11-23 01:50:13,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:50:13,560 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-23 01:50:13,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:50:13,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-23 01:50:13,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-11-23 01:50:13,573 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 39 [2024-11-23 01:50:13,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 140 transitions, 1302 flow. Second operand has 10 states, 10 states have (on average 15.5) internal successors, (155), 10 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:50:13,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:50:13,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 39 [2024-11-23 01:50:13,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:50:14,082 INFO L124 PetriNetUnfolderBase]: 615/1622 cut-off events. [2024-11-23 01:50:14,082 INFO L125 PetriNetUnfolderBase]: For 8334/8381 co-relation queries the response was YES. [2024-11-23 01:50:14,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7609 conditions, 1622 events. 615/1622 cut-off events. For 8334/8381 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 10292 event pairs, 184 based on Foata normal form. 38/1655 useless extension candidates. Maximal degree in co-relation 7431. Up to 1004 conditions per place. [2024-11-23 01:50:14,097 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 142 selfloop transitions, 67 changer transitions 0/221 dead transitions. [2024-11-23 01:50:14,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 221 transitions, 2474 flow [2024-11-23 01:50:14,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-23 01:50:14,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-23 01:50:14,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 256 transitions. [2024-11-23 01:50:14,098 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5470085470085471 [2024-11-23 01:50:14,098 INFO L175 Difference]: Start difference. First operand has 147 places, 140 transitions, 1302 flow. Second operand 12 states and 256 transitions. [2024-11-23 01:50:14,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 221 transitions, 2474 flow [2024-11-23 01:50:14,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 221 transitions, 2405 flow, removed 15 selfloop flow, removed 3 redundant places. [2024-11-23 01:50:14,118 INFO L231 Difference]: Finished difference. Result has 162 places, 175 transitions, 1847 flow [2024-11-23 01:50:14,118 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1259, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1847, PETRI_PLACES=162, PETRI_TRANSITIONS=175} [2024-11-23 01:50:14,119 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 123 predicate places. [2024-11-23 01:50:14,119 INFO L471 AbstractCegarLoop]: Abstraction has has 162 places, 175 transitions, 1847 flow [2024-11-23 01:50:14,119 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.5) internal successors, (155), 10 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:50:14,119 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:50:14,119 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:50:14,119 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-23 01:50:14,119 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-11-23 01:50:14,120 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:50:14,120 INFO L85 PathProgramCache]: Analyzing trace with hash -651456534, now seen corresponding path program 3 times [2024-11-23 01:50:14,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:50:14,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624945378] [2024-11-23 01:50:14,120 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-23 01:50:14,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:50:14,131 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-23 01:50:14,131 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 01:50:14,265 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-23 01:50:14,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:50:14,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624945378] [2024-11-23 01:50:14,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624945378] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:50:14,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:50:14,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-23 01:50:14,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301125282] [2024-11-23 01:50:14,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:50:14,266 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-23 01:50:14,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:50:14,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-23 01:50:14,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-23 01:50:14,267 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 39 [2024-11-23 01:50:14,267 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 175 transitions, 1847 flow. Second operand has 8 states, 8 states have (on average 17.75) internal successors, (142), 8 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:50:14,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:50:14,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 39 [2024-11-23 01:50:14,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:50:14,615 INFO L124 PetriNetUnfolderBase]: 575/1566 cut-off events. [2024-11-23 01:50:14,615 INFO L125 PetriNetUnfolderBase]: For 10513/10581 co-relation queries the response was YES. [2024-11-23 01:50:14,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8132 conditions, 1566 events. 575/1566 cut-off events. For 10513/10581 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 9985 event pairs, 159 based on Foata normal form. 17/1575 useless extension candidates. Maximal degree in co-relation 7947. Up to 500 conditions per place. [2024-11-23 01:50:14,631 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 248 selfloop transitions, 35 changer transitions 0/297 dead transitions. [2024-11-23 01:50:14,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 297 transitions, 3762 flow [2024-11-23 01:50:14,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-23 01:50:14,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-23 01:50:14,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 207 transitions. [2024-11-23 01:50:14,632 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6634615384615384 [2024-11-23 01:50:14,632 INFO L175 Difference]: Start difference. First operand has 162 places, 175 transitions, 1847 flow. Second operand 8 states and 207 transitions. [2024-11-23 01:50:14,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 297 transitions, 3762 flow [2024-11-23 01:50:14,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 297 transitions, 3693 flow, removed 24 selfloop flow, removed 2 redundant places. [2024-11-23 01:50:14,659 INFO L231 Difference]: Finished difference. Result has 172 places, 196 transitions, 2235 flow [2024-11-23 01:50:14,659 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1805, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2235, PETRI_PLACES=172, PETRI_TRANSITIONS=196} [2024-11-23 01:50:14,660 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 133 predicate places. [2024-11-23 01:50:14,660 INFO L471 AbstractCegarLoop]: Abstraction has has 172 places, 196 transitions, 2235 flow [2024-11-23 01:50:14,660 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.75) internal successors, (142), 8 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:50:14,660 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:50:14,660 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:50:14,660 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-23 01:50:14,660 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-11-23 01:50:14,660 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:50:14,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1021024533, now seen corresponding path program 3 times [2024-11-23 01:50:14,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:50:14,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246893090] [2024-11-23 01:50:14,668 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-23 01:50:14,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:50:14,678 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-23 01:50:14,678 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 01:50:14,854 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-23 01:50:14,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:50:14,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246893090] [2024-11-23 01:50:14,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246893090] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:50:14,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:50:14,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-23 01:50:14,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820945835] [2024-11-23 01:50:14,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:50:14,855 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-23 01:50:14,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:50:14,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-23 01:50:14,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-23 01:50:14,864 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 39 [2024-11-23 01:50:14,865 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 196 transitions, 2235 flow. Second operand has 10 states, 10 states have (on average 15.5) internal successors, (155), 10 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:50:14,865 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:50:14,865 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 39 [2024-11-23 01:50:14,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:50:15,542 INFO L124 PetriNetUnfolderBase]: 738/1911 cut-off events. [2024-11-23 01:50:15,542 INFO L125 PetriNetUnfolderBase]: For 18561/18616 co-relation queries the response was YES. [2024-11-23 01:50:15,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10764 conditions, 1911 events. 738/1911 cut-off events. For 18561/18616 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 12591 event pairs, 174 based on Foata normal form. 88/1994 useless extension candidates. Maximal degree in co-relation 10573. Up to 1116 conditions per place. [2024-11-23 01:50:15,570 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 207 selfloop transitions, 141 changer transitions 0/360 dead transitions. [2024-11-23 01:50:15,572 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 360 transitions, 4901 flow [2024-11-23 01:50:15,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-23 01:50:15,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-23 01:50:15,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 436 transitions. [2024-11-23 01:50:15,573 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5323565323565324 [2024-11-23 01:50:15,573 INFO L175 Difference]: Start difference. First operand has 172 places, 196 transitions, 2235 flow. Second operand 21 states and 436 transitions. [2024-11-23 01:50:15,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 360 transitions, 4901 flow [2024-11-23 01:50:15,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 360 transitions, 4852 flow, removed 24 selfloop flow, removed 1 redundant places. [2024-11-23 01:50:15,612 INFO L231 Difference]: Finished difference. Result has 205 places, 284 transitions, 3911 flow [2024-11-23 01:50:15,613 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2210, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=3911, PETRI_PLACES=205, PETRI_TRANSITIONS=284} [2024-11-23 01:50:15,614 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 166 predicate places. [2024-11-23 01:50:15,614 INFO L471 AbstractCegarLoop]: Abstraction has has 205 places, 284 transitions, 3911 flow [2024-11-23 01:50:15,614 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.5) internal successors, (155), 10 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:50:15,614 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:50:15,614 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:50:15,614 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-23 01:50:15,615 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-11-23 01:50:15,615 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:50:15,615 INFO L85 PathProgramCache]: Analyzing trace with hash -1790069025, now seen corresponding path program 4 times [2024-11-23 01:50:15,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:50:15,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679347697] [2024-11-23 01:50:15,616 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-23 01:50:15,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:50:15,636 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-23 01:50:15,636 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 01:50:15,987 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-23 01:50:15,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:50:15,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679347697] [2024-11-23 01:50:15,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679347697] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:50:15,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:50:15,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-23 01:50:15,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695093267] [2024-11-23 01:50:15,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:50:15,988 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-23 01:50:15,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:50:15,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-23 01:50:15,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-11-23 01:50:15,995 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-11-23 01:50:15,996 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 284 transitions, 3911 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:50:15,996 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:50:15,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-11-23 01:50:15,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:50:16,891 INFO L124 PetriNetUnfolderBase]: 1513/3404 cut-off events. [2024-11-23 01:50:16,891 INFO L125 PetriNetUnfolderBase]: For 51849/51888 co-relation queries the response was YES. [2024-11-23 01:50:16,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21634 conditions, 3404 events. 1513/3404 cut-off events. For 51849/51888 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 23334 event pairs, 178 based on Foata normal form. 29/3432 useless extension candidates. Maximal degree in co-relation 21428. Up to 840 conditions per place. [2024-11-23 01:50:16,931 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 365 selfloop transitions, 182 changer transitions 0/555 dead transitions. [2024-11-23 01:50:16,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 555 transitions, 8258 flow [2024-11-23 01:50:16,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-23 01:50:16,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-23 01:50:16,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 369 transitions. [2024-11-23 01:50:16,933 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4979757085020243 [2024-11-23 01:50:16,933 INFO L175 Difference]: Start difference. First operand has 205 places, 284 transitions, 3911 flow. Second operand 19 states and 369 transitions. [2024-11-23 01:50:16,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 555 transitions, 8258 flow [2024-11-23 01:50:17,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 555 transitions, 7882 flow, removed 176 selfloop flow, removed 2 redundant places. [2024-11-23 01:50:17,072 INFO L231 Difference]: Finished difference. Result has 231 places, 362 transitions, 5261 flow [2024-11-23 01:50:17,073 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3632, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=5261, PETRI_PLACES=231, PETRI_TRANSITIONS=362} [2024-11-23 01:50:17,073 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 192 predicate places. [2024-11-23 01:50:17,073 INFO L471 AbstractCegarLoop]: Abstraction has has 231 places, 362 transitions, 5261 flow [2024-11-23 01:50:17,073 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:50:17,073 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:50:17,074 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:50:17,074 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-23 01:50:17,074 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-11-23 01:50:17,074 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:50:17,074 INFO L85 PathProgramCache]: Analyzing trace with hash -930599849, now seen corresponding path program 5 times [2024-11-23 01:50:17,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:50:17,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370594836] [2024-11-23 01:50:17,075 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-23 01:50:17,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:50:17,108 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2024-11-23 01:50:17,109 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 01:50:17,715 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2024-11-23 01:50:17,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:50:17,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370594836] [2024-11-23 01:50:17,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370594836] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:50:17,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1582127916] [2024-11-23 01:50:17,716 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-23 01:50:17,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:50:17,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:50:17,718 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 01:50:17,719 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-23 01:50:17,812 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2024-11-23 01:50:17,812 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 01:50:17,814 INFO L255 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-23 01:50:17,816 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:50:18,009 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 15 treesize of output 1 [2024-11-23 01:50:18,055 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 17 treesize of output 9 [2024-11-23 01:50:18,068 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-23 01:50:18,068 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 01:50:18,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1582127916] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:50:18,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 01:50:18,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 17 [2024-11-23 01:50:18,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884429277] [2024-11-23 01:50:18,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:50:18,070 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-23 01:50:18,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:50:18,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-23 01:50:18,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2024-11-23 01:50:18,081 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-11-23 01:50:18,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 362 transitions, 5261 flow. Second operand has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:50:18,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:50:18,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-11-23 01:50:18,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:50:19,348 INFO L124 PetriNetUnfolderBase]: 1532/3457 cut-off events. [2024-11-23 01:50:19,348 INFO L125 PetriNetUnfolderBase]: For 74529/74568 co-relation queries the response was YES. [2024-11-23 01:50:19,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25572 conditions, 3457 events. 1532/3457 cut-off events. For 74529/74568 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 24090 event pairs, 146 based on Foata normal form. 34/3482 useless extension candidates. Maximal degree in co-relation 25355. Up to 1319 conditions per place. [2024-11-23 01:50:19,396 INFO L140 encePairwiseOnDemand]: 24/39 looper letters, 466 selfloop transitions, 165 changer transitions 0/641 dead transitions. [2024-11-23 01:50:19,396 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 641 transitions, 10363 flow [2024-11-23 01:50:19,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-23 01:50:19,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-11-23 01:50:19,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 448 transitions. [2024-11-23 01:50:19,398 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49944258639910816 [2024-11-23 01:50:19,398 INFO L175 Difference]: Start difference. First operand has 231 places, 362 transitions, 5261 flow. Second operand 23 states and 448 transitions. [2024-11-23 01:50:19,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 641 transitions, 10363 flow [2024-11-23 01:50:19,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 641 transitions, 10119 flow, removed 64 selfloop flow, removed 4 redundant places. [2024-11-23 01:50:19,564 INFO L231 Difference]: Finished difference. Result has 263 places, 448 transitions, 7120 flow [2024-11-23 01:50:19,565 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=5102, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=7120, PETRI_PLACES=263, PETRI_TRANSITIONS=448} [2024-11-23 01:50:19,565 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 224 predicate places. [2024-11-23 01:50:19,565 INFO L471 AbstractCegarLoop]: Abstraction has has 263 places, 448 transitions, 7120 flow [2024-11-23 01:50:19,565 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:50:19,566 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:50:19,566 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:50:19,574 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-23 01:50:19,766 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:50:19,767 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-11-23 01:50:19,767 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:50:19,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1999422867, now seen corresponding path program 6 times [2024-11-23 01:50:19,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:50:19,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435043104] [2024-11-23 01:50:19,768 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-23 01:50:19,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:50:19,784 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-23 01:50:19,785 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 01:50:20,059 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-23 01:50:20,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:50:20,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435043104] [2024-11-23 01:50:20,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435043104] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:50:20,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:50:20,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-23 01:50:20,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208126895] [2024-11-23 01:50:20,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:50:20,061 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-23 01:50:20,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:50:20,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-23 01:50:20,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-11-23 01:50:20,071 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 39 [2024-11-23 01:50:20,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 448 transitions, 7120 flow. Second operand has 10 states, 10 states have (on average 15.5) internal successors, (155), 10 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:50:20,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:50:20,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 39 [2024-11-23 01:50:20,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:50:21,133 INFO L124 PetriNetUnfolderBase]: 1234/3129 cut-off events. [2024-11-23 01:50:21,133 INFO L125 PetriNetUnfolderBase]: For 78214/78285 co-relation queries the response was YES. [2024-11-23 01:50:21,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24076 conditions, 3129 events. 1234/3129 cut-off events. For 78214/78285 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 23377 event pairs, 281 based on Foata normal form. 34/3140 useless extension candidates. Maximal degree in co-relation 23844. Up to 2179 conditions per place. [2024-11-23 01:50:21,174 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 404 selfloop transitions, 97 changer transitions 0/521 dead transitions. [2024-11-23 01:50:21,174 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 521 transitions, 9191 flow [2024-11-23 01:50:21,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-23 01:50:21,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-23 01:50:21,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 355 transitions. [2024-11-23 01:50:21,177 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5056980056980057 [2024-11-23 01:50:21,178 INFO L175 Difference]: Start difference. First operand has 263 places, 448 transitions, 7120 flow. Second operand 18 states and 355 transitions. [2024-11-23 01:50:21,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 521 transitions, 9191 flow [2024-11-23 01:50:21,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 521 transitions, 8813 flow, removed 146 selfloop flow, removed 2 redundant places. [2024-11-23 01:50:21,404 INFO L231 Difference]: Finished difference. Result has 285 places, 482 transitions, 7659 flow [2024-11-23 01:50:21,405 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=6752, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=448, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=366, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=7659, PETRI_PLACES=285, PETRI_TRANSITIONS=482} [2024-11-23 01:50:21,405 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 246 predicate places. [2024-11-23 01:50:21,405 INFO L471 AbstractCegarLoop]: Abstraction has has 285 places, 482 transitions, 7659 flow [2024-11-23 01:50:21,405 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.5) internal successors, (155), 10 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:50:21,405 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:50:21,405 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:50:21,406 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-23 01:50:21,406 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-11-23 01:50:21,406 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:50:21,406 INFO L85 PathProgramCache]: Analyzing trace with hash 1126143222, now seen corresponding path program 4 times [2024-11-23 01:50:21,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:50:21,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238677247] [2024-11-23 01:50:21,406 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-23 01:50:21,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:50:21,423 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-23 01:50:21,424 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 01:50:21,580 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-23 01:50:21,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:50:21,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238677247] [2024-11-23 01:50:21,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238677247] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:50:21,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:50:21,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-23 01:50:21,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410049127] [2024-11-23 01:50:21,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:50:21,582 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 01:50:21,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:50:21,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 01:50:21,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-23 01:50:21,582 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 39 [2024-11-23 01:50:21,582 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 482 transitions, 7659 flow. Second operand has 7 states, 7 states have (on average 18.0) internal successors, (126), 7 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:50:21,583 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:50:21,583 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 39 [2024-11-23 01:50:21,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:50:22,362 INFO L124 PetriNetUnfolderBase]: 1182/3050 cut-off events. [2024-11-23 01:50:22,362 INFO L125 PetriNetUnfolderBase]: For 69460/69803 co-relation queries the response was YES. [2024-11-23 01:50:22,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23248 conditions, 3050 events. 1182/3050 cut-off events. For 69460/69803 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 22729 event pairs, 171 based on Foata normal form. 40/3072 useless extension candidates. Maximal degree in co-relation 23008. Up to 1223 conditions per place. [2024-11-23 01:50:22,396 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 508 selfloop transitions, 90 changer transitions 0/630 dead transitions. [2024-11-23 01:50:22,397 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 630 transitions, 11000 flow [2024-11-23 01:50:22,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-23 01:50:22,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-23 01:50:22,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 186 transitions. [2024-11-23 01:50:22,398 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6813186813186813 [2024-11-23 01:50:22,398 INFO L175 Difference]: Start difference. First operand has 285 places, 482 transitions, 7659 flow. Second operand 7 states and 186 transitions. [2024-11-23 01:50:22,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 630 transitions, 11000 flow [2024-11-23 01:50:22,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 630 transitions, 10803 flow, removed 91 selfloop flow, removed 1 redundant places. [2024-11-23 01:50:22,678 INFO L231 Difference]: Finished difference. Result has 294 places, 500 transitions, 8020 flow [2024-11-23 01:50:22,679 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=7388, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=476, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=394, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8020, PETRI_PLACES=294, PETRI_TRANSITIONS=500} [2024-11-23 01:50:22,681 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 255 predicate places. [2024-11-23 01:50:22,681 INFO L471 AbstractCegarLoop]: Abstraction has has 294 places, 500 transitions, 8020 flow [2024-11-23 01:50:22,681 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.0) internal successors, (126), 7 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:50:22,681 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:50:22,682 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:50:22,682 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-23 01:50:22,682 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-11-23 01:50:22,683 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:50:22,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1457203126, now seen corresponding path program 5 times [2024-11-23 01:50:22,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:50:22,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406700127] [2024-11-23 01:50:22,683 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-23 01:50:22,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:50:22,710 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2024-11-23 01:50:22,710 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 01:50:23,043 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2024-11-23 01:50:23,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:50:23,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406700127] [2024-11-23 01:50:23,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406700127] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:50:23,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1916877179] [2024-11-23 01:50:23,043 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-23 01:50:23,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:50:23,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:50:23,046 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 01:50:23,048 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-23 01:50:23,161 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2024-11-23 01:50:23,161 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 01:50:23,163 INFO L255 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-23 01:50:23,166 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:50:23,405 INFO L349 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2024-11-23 01:50:23,405 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 15 [2024-11-23 01:50:23,446 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 17 treesize of output 9 [2024-11-23 01:50:23,456 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-23 01:50:23,457 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 01:50:23,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1916877179] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:50:23,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 01:50:23,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 15 [2024-11-23 01:50:23,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765118110] [2024-11-23 01:50:23,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:50:23,458 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-23 01:50:23,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:50:23,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-23 01:50:23,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2024-11-23 01:50:23,469 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-11-23 01:50:23,469 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 500 transitions, 8020 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:50:23,469 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:50:23,470 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-11-23 01:50:23,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:50:24,932 INFO L124 PetriNetUnfolderBase]: 1892/4286 cut-off events. [2024-11-23 01:50:24,932 INFO L125 PetriNetUnfolderBase]: For 103341/103408 co-relation queries the response was YES. [2024-11-23 01:50:24,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33313 conditions, 4286 events. 1892/4286 cut-off events. For 103341/103408 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 31521 event pairs, 267 based on Foata normal form. 38/4320 useless extension candidates. Maximal degree in co-relation 33069. Up to 2615 conditions per place. [2024-11-23 01:50:25,005 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 522 selfloop transitions, 179 changer transitions 0/716 dead transitions. [2024-11-23 01:50:25,005 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 716 transitions, 13017 flow [2024-11-23 01:50:25,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-23 01:50:25,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-23 01:50:25,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 276 transitions. [2024-11-23 01:50:25,006 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5054945054945055 [2024-11-23 01:50:25,007 INFO L175 Difference]: Start difference. First operand has 294 places, 500 transitions, 8020 flow. Second operand 14 states and 276 transitions. [2024-11-23 01:50:25,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 716 transitions, 13017 flow [2024-11-23 01:50:25,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 716 transitions, 12875 flow, removed 37 selfloop flow, removed 2 redundant places. [2024-11-23 01:50:25,418 INFO L231 Difference]: Finished difference. Result has 311 places, 552 transitions, 9531 flow [2024-11-23 01:50:25,418 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=7920, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=500, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=350, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=9531, PETRI_PLACES=311, PETRI_TRANSITIONS=552} [2024-11-23 01:50:25,419 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 272 predicate places. [2024-11-23 01:50:25,419 INFO L471 AbstractCegarLoop]: Abstraction has has 311 places, 552 transitions, 9531 flow [2024-11-23 01:50:25,419 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:50:25,419 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:50:25,419 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:50:25,427 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-23 01:50:25,620 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:50:25,620 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-11-23 01:50:25,620 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:50:25,620 INFO L85 PathProgramCache]: Analyzing trace with hash -1789474379, now seen corresponding path program 7 times [2024-11-23 01:50:25,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:50:25,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531253529] [2024-11-23 01:50:25,621 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-23 01:50:25,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:50:25,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:50:25,998 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-23 01:50:25,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:50:25,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531253529] [2024-11-23 01:50:25,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531253529] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:50:25,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:50:25,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-23 01:50:25,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368938634] [2024-11-23 01:50:25,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:50:25,999 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-23 01:50:26,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:50:26,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-23 01:50:26,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-11-23 01:50:26,013 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 39 [2024-11-23 01:50:26,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 552 transitions, 9531 flow. Second operand has 10 states, 10 states have (on average 15.5) internal successors, (155), 10 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:50:26,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:50:26,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 39 [2024-11-23 01:50:26,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:50:27,260 INFO L124 PetriNetUnfolderBase]: 1524/3769 cut-off events. [2024-11-23 01:50:27,260 INFO L125 PetriNetUnfolderBase]: For 130705/130860 co-relation queries the response was YES. [2024-11-23 01:50:27,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32545 conditions, 3769 events. 1524/3769 cut-off events. For 130705/130860 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 28864 event pairs, 169 based on Foata normal form. 80/3840 useless extension candidates. Maximal degree in co-relation 32294. Up to 2041 conditions per place. [2024-11-23 01:50:27,312 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 428 selfloop transitions, 304 changer transitions 0/755 dead transitions. [2024-11-23 01:50:27,313 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 755 transitions, 14365 flow [2024-11-23 01:50:27,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-23 01:50:27,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-23 01:50:27,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 461 transitions. [2024-11-23 01:50:27,316 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49252136752136755 [2024-11-23 01:50:27,316 INFO L175 Difference]: Start difference. First operand has 311 places, 552 transitions, 9531 flow. Second operand 24 states and 461 transitions. [2024-11-23 01:50:27,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 755 transitions, 14365 flow [2024-11-23 01:50:27,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 755 transitions, 14206 flow, removed 29 selfloop flow, removed 4 redundant places. [2024-11-23 01:50:27,718 INFO L231 Difference]: Finished difference. Result has 340 places, 662 transitions, 12179 flow [2024-11-23 01:50:27,718 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=9385, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=551, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=212, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=12179, PETRI_PLACES=340, PETRI_TRANSITIONS=662} [2024-11-23 01:50:27,719 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 301 predicate places. [2024-11-23 01:50:27,719 INFO L471 AbstractCegarLoop]: Abstraction has has 340 places, 662 transitions, 12179 flow [2024-11-23 01:50:27,719 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.5) internal successors, (155), 10 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:50:27,719 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:50:27,719 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:50:27,719 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-23 01:50:27,719 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-11-23 01:50:27,719 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:50:27,719 INFO L85 PathProgramCache]: Analyzing trace with hash 964908229, now seen corresponding path program 8 times [2024-11-23 01:50:27,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:50:27,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067454242] [2024-11-23 01:50:27,720 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 01:50:27,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:50:27,728 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-23 01:50:27,729 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 01:50:27,891 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-23 01:50:27,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:50:27,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067454242] [2024-11-23 01:50:27,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067454242] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:50:27,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:50:27,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-23 01:50:27,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759241488] [2024-11-23 01:50:27,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:50:27,893 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-23 01:50:27,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:50:27,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-23 01:50:27,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-23 01:50:27,906 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 39 [2024-11-23 01:50:27,907 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 662 transitions, 12179 flow. Second operand has 10 states, 10 states have (on average 15.5) internal successors, (155), 10 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:50:27,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:50:27,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 39 [2024-11-23 01:50:27,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:50:29,296 INFO L124 PetriNetUnfolderBase]: 1576/3958 cut-off events. [2024-11-23 01:50:29,296 INFO L125 PetriNetUnfolderBase]: For 153332/153487 co-relation queries the response was YES. [2024-11-23 01:50:29,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35685 conditions, 3958 events. 1576/3958 cut-off events. For 153332/153487 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 30892 event pairs, 306 based on Foata normal form. 53/3999 useless extension candidates. Maximal degree in co-relation 35423. Up to 2703 conditions per place. [2024-11-23 01:50:29,347 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 557 selfloop transitions, 205 changer transitions 0/785 dead transitions. [2024-11-23 01:50:29,347 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 785 transitions, 16010 flow [2024-11-23 01:50:29,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-23 01:50:29,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-11-23 01:50:29,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 456 transitions. [2024-11-23 01:50:29,349 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5083612040133779 [2024-11-23 01:50:29,349 INFO L175 Difference]: Start difference. First operand has 340 places, 662 transitions, 12179 flow. Second operand 23 states and 456 transitions. [2024-11-23 01:50:29,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 785 transitions, 16010 flow [2024-11-23 01:50:29,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 785 transitions, 15516 flow, removed 162 selfloop flow, removed 8 redundant places. [2024-11-23 01:50:29,822 INFO L231 Difference]: Finished difference. Result has 362 places, 713 transitions, 13447 flow [2024-11-23 01:50:29,822 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=11737, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=661, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=159, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=486, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=13447, PETRI_PLACES=362, PETRI_TRANSITIONS=713} [2024-11-23 01:50:29,822 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 323 predicate places. [2024-11-23 01:50:29,822 INFO L471 AbstractCegarLoop]: Abstraction has has 362 places, 713 transitions, 13447 flow [2024-11-23 01:50:29,823 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.5) internal successors, (155), 10 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:50:29,823 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:50:29,823 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:50:29,823 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-23 01:50:29,823 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-11-23 01:50:29,823 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:50:29,823 INFO L85 PathProgramCache]: Analyzing trace with hash -1529903443, now seen corresponding path program 9 times [2024-11-23 01:50:29,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:50:29,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652855768] [2024-11-23 01:50:29,823 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-23 01:50:29,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:50:29,833 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-23 01:50:29,833 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 01:50:30,014 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-23 01:50:30,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:50:30,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652855768] [2024-11-23 01:50:30,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652855768] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:50:30,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:50:30,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-23 01:50:30,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856594014] [2024-11-23 01:50:30,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:50:30,015 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-23 01:50:30,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:50:30,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-23 01:50:30,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-11-23 01:50:30,027 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 39 [2024-11-23 01:50:30,027 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 713 transitions, 13447 flow. Second operand has 10 states, 10 states have (on average 15.5) internal successors, (155), 10 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:50:30,027 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:50:30,027 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 39 [2024-11-23 01:50:30,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:50:31,498 INFO L124 PetriNetUnfolderBase]: 1572/3985 cut-off events. [2024-11-23 01:50:31,499 INFO L125 PetriNetUnfolderBase]: For 158860/158960 co-relation queries the response was YES. [2024-11-23 01:50:31,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35943 conditions, 3985 events. 1572/3985 cut-off events. For 158860/158960 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 31288 event pairs, 304 based on Foata normal form. 40/4014 useless extension candidates. Maximal degree in co-relation 35675. Up to 2744 conditions per place. [2024-11-23 01:50:31,555 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 562 selfloop transitions, 190 changer transitions 0/775 dead transitions. [2024-11-23 01:50:31,556 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 775 transitions, 15909 flow [2024-11-23 01:50:31,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-23 01:50:31,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-23 01:50:31,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 406 transitions. [2024-11-23 01:50:31,557 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49572649572649574 [2024-11-23 01:50:31,557 INFO L175 Difference]: Start difference. First operand has 362 places, 713 transitions, 13447 flow. Second operand 21 states and 406 transitions. [2024-11-23 01:50:31,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 775 transitions, 15909 flow [2024-11-23 01:50:32,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 775 transitions, 15422 flow, removed 179 selfloop flow, removed 7 redundant places. [2024-11-23 01:50:32,078 INFO L231 Difference]: Finished difference. Result has 380 places, 723 transitions, 13715 flow [2024-11-23 01:50:32,078 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=12935, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=711, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=181, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=524, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=13715, PETRI_PLACES=380, PETRI_TRANSITIONS=723} [2024-11-23 01:50:32,078 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 341 predicate places. [2024-11-23 01:50:32,078 INFO L471 AbstractCegarLoop]: Abstraction has has 380 places, 723 transitions, 13715 flow [2024-11-23 01:50:32,079 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.5) internal successors, (155), 10 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:50:32,079 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:50:32,079 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:50:32,079 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-23 01:50:32,079 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-11-23 01:50:32,079 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:50:32,079 INFO L85 PathProgramCache]: Analyzing trace with hash -444818638, now seen corresponding path program 6 times [2024-11-23 01:50:32,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:50:32,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53757810] [2024-11-23 01:50:32,079 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-23 01:50:32,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:50:32,093 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-23 01:50:32,093 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 01:50:32,218 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-23 01:50:32,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:50:32,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53757810] [2024-11-23 01:50:32,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53757810] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:50:32,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:50:32,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-23 01:50:32,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460142790] [2024-11-23 01:50:32,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:50:32,219 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-23 01:50:32,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:50:32,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-23 01:50:32,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-11-23 01:50:32,220 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 39 [2024-11-23 01:50:32,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 723 transitions, 13715 flow. Second operand has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:50:32,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:50:32,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 39 [2024-11-23 01:50:32,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:50:33,777 INFO L124 PetriNetUnfolderBase]: 1643/4221 cut-off events. [2024-11-23 01:50:33,777 INFO L125 PetriNetUnfolderBase]: For 155742/156161 co-relation queries the response was YES. [2024-11-23 01:50:33,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37912 conditions, 4221 events. 1643/4221 cut-off events. For 155742/156161 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 33801 event pairs, 159 based on Foata normal form. 67/4273 useless extension candidates. Maximal degree in co-relation 37641. Up to 1141 conditions per place. [2024-11-23 01:50:33,844 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 746 selfloop transitions, 203 changer transitions 0/984 dead transitions. [2024-11-23 01:50:33,844 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 984 transitions, 20162 flow [2024-11-23 01:50:33,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-23 01:50:33,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-23 01:50:33,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 318 transitions. [2024-11-23 01:50:33,846 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6272189349112426 [2024-11-23 01:50:33,846 INFO L175 Difference]: Start difference. First operand has 380 places, 723 transitions, 13715 flow. Second operand 13 states and 318 transitions. [2024-11-23 01:50:33,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 984 transitions, 20162 flow [2024-11-23 01:50:34,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 984 transitions, 19655 flow, removed 112 selfloop flow, removed 10 redundant places. [2024-11-23 01:50:34,589 INFO L231 Difference]: Finished difference. Result has 388 places, 788 transitions, 15094 flow [2024-11-23 01:50:34,589 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=13287, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=723, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=147, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=566, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=15094, PETRI_PLACES=388, PETRI_TRANSITIONS=788} [2024-11-23 01:50:34,590 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 349 predicate places. [2024-11-23 01:50:34,590 INFO L471 AbstractCegarLoop]: Abstraction has has 388 places, 788 transitions, 15094 flow [2024-11-23 01:50:34,590 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:50:34,590 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:50:34,591 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:50:34,591 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-23 01:50:34,591 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-11-23 01:50:34,591 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:50:34,591 INFO L85 PathProgramCache]: Analyzing trace with hash 897136622, now seen corresponding path program 7 times [2024-11-23 01:50:34,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:50:34,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889262915] [2024-11-23 01:50:34,592 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-23 01:50:34,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:50:34,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:50:34,880 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-23 01:50:34,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:50:34,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889262915] [2024-11-23 01:50:34,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889262915] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:50:34,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:50:34,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-23 01:50:34,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727672619] [2024-11-23 01:50:34,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:50:34,881 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-23 01:50:34,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:50:34,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-23 01:50:34,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-11-23 01:50:34,882 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 39 [2024-11-23 01:50:34,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 788 transitions, 15094 flow. Second operand has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:50:34,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:50:34,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 39 [2024-11-23 01:50:34,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:50:36,396 INFO L124 PetriNetUnfolderBase]: 1613/4110 cut-off events. [2024-11-23 01:50:36,396 INFO L125 PetriNetUnfolderBase]: For 163121/163481 co-relation queries the response was YES. [2024-11-23 01:50:36,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38676 conditions, 4110 events. 1613/4110 cut-off events. For 163121/163481 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 32572 event pairs, 135 based on Foata normal form. 59/4156 useless extension candidates. Maximal degree in co-relation 38399. Up to 932 conditions per place. [2024-11-23 01:50:36,468 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 647 selfloop transitions, 239 changer transitions 0/921 dead transitions. [2024-11-23 01:50:36,468 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 921 transitions, 19179 flow [2024-11-23 01:50:36,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-23 01:50:36,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-23 01:50:36,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 288 transitions. [2024-11-23 01:50:36,469 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6153846153846154 [2024-11-23 01:50:36,469 INFO L175 Difference]: Start difference. First operand has 388 places, 788 transitions, 15094 flow. Second operand 12 states and 288 transitions. [2024-11-23 01:50:36,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 921 transitions, 19179 flow [2024-11-23 01:50:37,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 921 transitions, 18428 flow, removed 309 selfloop flow, removed 9 redundant places. [2024-11-23 01:50:37,287 INFO L231 Difference]: Finished difference. Result has 392 places, 756 transitions, 14537 flow [2024-11-23 01:50:37,287 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=13598, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=744, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=228, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=511, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=14537, PETRI_PLACES=392, PETRI_TRANSITIONS=756} [2024-11-23 01:50:37,288 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 353 predicate places. [2024-11-23 01:50:37,288 INFO L471 AbstractCegarLoop]: Abstraction has has 392 places, 756 transitions, 14537 flow [2024-11-23 01:50:37,288 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:50:37,288 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:50:37,288 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:50:37,288 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-23 01:50:37,288 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-11-23 01:50:37,288 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:50:37,288 INFO L85 PathProgramCache]: Analyzing trace with hash -995754924, now seen corresponding path program 8 times [2024-11-23 01:50:37,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:50:37,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498180120] [2024-11-23 01:50:37,289 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 01:50:37,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:50:37,297 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-23 01:50:37,298 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 01:50:37,395 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-23 01:50:37,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:50:37,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498180120] [2024-11-23 01:50:37,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498180120] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:50:37,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:50:37,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-23 01:50:37,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175086567] [2024-11-23 01:50:37,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:50:37,397 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-23 01:50:37,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:50:37,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-23 01:50:37,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-23 01:50:37,397 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 39 [2024-11-23 01:50:37,398 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 756 transitions, 14537 flow. Second operand has 8 states, 8 states have (on average 17.75) internal successors, (142), 8 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:50:37,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:50:37,398 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 39 [2024-11-23 01:50:37,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:50:38,641 INFO L124 PetriNetUnfolderBase]: 1573/4002 cut-off events. [2024-11-23 01:50:38,641 INFO L125 PetriNetUnfolderBase]: For 155053/155411 co-relation queries the response was YES. [2024-11-23 01:50:38,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37398 conditions, 4002 events. 1573/4002 cut-off events. For 155053/155411 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 31395 event pairs, 225 based on Foata normal form. 41/4027 useless extension candidates. Maximal degree in co-relation 37122. Up to 1806 conditions per place. [2024-11-23 01:50:38,708 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 635 selfloop transitions, 124 changer transitions 0/794 dead transitions. [2024-11-23 01:50:38,708 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 794 transitions, 16750 flow [2024-11-23 01:50:38,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-23 01:50:38,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-23 01:50:38,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 200 transitions. [2024-11-23 01:50:38,709 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6410256410256411 [2024-11-23 01:50:38,709 INFO L175 Difference]: Start difference. First operand has 392 places, 756 transitions, 14537 flow. Second operand 8 states and 200 transitions. [2024-11-23 01:50:38,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 794 transitions, 16750 flow [2024-11-23 01:50:39,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 794 transitions, 16391 flow, removed 43 selfloop flow, removed 10 redundant places. [2024-11-23 01:50:39,371 INFO L231 Difference]: Finished difference. Result has 391 places, 746 transitions, 14354 flow [2024-11-23 01:50:39,371 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=13877, PETRI_DIFFERENCE_MINUEND_PLACES=381, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=737, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=616, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=14354, PETRI_PLACES=391, PETRI_TRANSITIONS=746} [2024-11-23 01:50:39,371 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 352 predicate places. [2024-11-23 01:50:39,371 INFO L471 AbstractCegarLoop]: Abstraction has has 391 places, 746 transitions, 14354 flow [2024-11-23 01:50:39,372 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.75) internal successors, (142), 8 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:50:39,372 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:50:39,372 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:50:39,372 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-23 01:50:39,372 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-11-23 01:50:39,372 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:50:39,372 INFO L85 PathProgramCache]: Analyzing trace with hash 1546694166, now seen corresponding path program 1 times [2024-11-23 01:50:39,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:50:39,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331068723] [2024-11-23 01:50:39,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:50:39,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:50:39,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:50:39,654 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-23 01:50:39,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:50:39,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331068723] [2024-11-23 01:50:39,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331068723] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:50:39,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:50:39,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-23 01:50:39,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981606658] [2024-11-23 01:50:39,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:50:39,655 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-23 01:50:39,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:50:39,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-23 01:50:39,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-23 01:50:39,674 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-11-23 01:50:39,675 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 746 transitions, 14354 flow. Second operand has 11 states, 11 states have (on average 12.454545454545455) internal successors, (137), 11 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:50:39,675 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:50:39,675 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-11-23 01:50:39,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:50:41,537 INFO L124 PetriNetUnfolderBase]: 2261/5114 cut-off events. [2024-11-23 01:50:41,537 INFO L125 PetriNetUnfolderBase]: For 237072/237131 co-relation queries the response was YES. [2024-11-23 01:50:41,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49748 conditions, 5114 events. 2261/5114 cut-off events. For 237072/237131 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 39182 event pairs, 368 based on Foata normal form. 50/5162 useless extension candidates. Maximal degree in co-relation 49474. Up to 3292 conditions per place. [2024-11-23 01:50:41,619 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 688 selfloop transitions, 243 changer transitions 0/943 dead transitions. [2024-11-23 01:50:41,619 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 409 places, 943 transitions, 20381 flow [2024-11-23 01:50:41,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-23 01:50:41,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-23 01:50:41,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 334 transitions. [2024-11-23 01:50:41,620 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4507422402159244 [2024-11-23 01:50:41,620 INFO L175 Difference]: Start difference. First operand has 391 places, 746 transitions, 14354 flow. Second operand 19 states and 334 transitions. [2024-11-23 01:50:41,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 409 places, 943 transitions, 20381 flow [2024-11-23 01:50:42,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 405 places, 943 transitions, 20073 flow, removed 15 selfloop flow, removed 4 redundant places. [2024-11-23 01:50:42,535 INFO L231 Difference]: Finished difference. Result has 414 places, 826 transitions, 16839 flow [2024-11-23 01:50:42,536 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=14129, PETRI_DIFFERENCE_MINUEND_PLACES=387, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=746, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=165, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=556, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=16839, PETRI_PLACES=414, PETRI_TRANSITIONS=826} [2024-11-23 01:50:42,538 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 375 predicate places. [2024-11-23 01:50:42,538 INFO L471 AbstractCegarLoop]: Abstraction has has 414 places, 826 transitions, 16839 flow [2024-11-23 01:50:42,538 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.454545454545455) internal successors, (137), 11 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:50:42,538 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:50:42,538 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:50:42,538 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-23 01:50:42,539 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-11-23 01:50:42,539 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:50:42,539 INFO L85 PathProgramCache]: Analyzing trace with hash -1803600520, now seen corresponding path program 2 times [2024-11-23 01:50:42,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:50:42,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059766426] [2024-11-23 01:50:42,539 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 01:50:42,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:50:42,550 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-23 01:50:42,550 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 01:50:42,723 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-23 01:50:42,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:50:42,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059766426] [2024-11-23 01:50:42,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059766426] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:50:42,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:50:42,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-23 01:50:42,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085892953] [2024-11-23 01:50:42,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:50:42,724 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-23 01:50:42,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:50:42,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-23 01:50:42,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-23 01:50:42,739 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-11-23 01:50:42,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 826 transitions, 16839 flow. Second operand has 11 states, 11 states have (on average 12.454545454545455) internal successors, (137), 11 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:50:42,739 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:50:42,739 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-11-23 01:50:42,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:50:44,783 INFO L124 PetriNetUnfolderBase]: 2438/5473 cut-off events. [2024-11-23 01:50:44,783 INFO L125 PetriNetUnfolderBase]: For 270979/271046 co-relation queries the response was YES. [2024-11-23 01:50:44,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55756 conditions, 5473 events. 2438/5473 cut-off events. For 270979/271046 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 42432 event pairs, 375 based on Foata normal form. 59/5531 useless extension candidates. Maximal degree in co-relation 55473. Up to 3313 conditions per place. [2024-11-23 01:50:44,879 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 724 selfloop transitions, 296 changer transitions 0/1032 dead transitions. [2024-11-23 01:50:44,880 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 435 places, 1032 transitions, 23070 flow [2024-11-23 01:50:44,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-23 01:50:44,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-23 01:50:44,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 404 transitions. [2024-11-23 01:50:44,881 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47086247086247085 [2024-11-23 01:50:44,881 INFO L175 Difference]: Start difference. First operand has 414 places, 826 transitions, 16839 flow. Second operand 22 states and 404 transitions. [2024-11-23 01:50:44,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 435 places, 1032 transitions, 23070 flow [2024-11-23 01:50:45,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 434 places, 1032 transitions, 22957 flow, removed 35 selfloop flow, removed 1 redundant places. [2024-11-23 01:50:45,984 INFO L231 Difference]: Finished difference. Result has 441 places, 883 transitions, 18967 flow [2024-11-23 01:50:45,985 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=16746, PETRI_DIFFERENCE_MINUEND_PLACES=413, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=826, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=244, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=568, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=18967, PETRI_PLACES=441, PETRI_TRANSITIONS=883} [2024-11-23 01:50:45,985 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 402 predicate places. [2024-11-23 01:50:45,985 INFO L471 AbstractCegarLoop]: Abstraction has has 441 places, 883 transitions, 18967 flow [2024-11-23 01:50:45,986 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.454545454545455) internal successors, (137), 11 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:50:45,986 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:50:45,986 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:50:45,986 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-11-23 01:50:45,986 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-11-23 01:50:45,986 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:50:45,986 INFO L85 PathProgramCache]: Analyzing trace with hash -1462547334, now seen corresponding path program 1 times [2024-11-23 01:50:45,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:50:45,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30827446] [2024-11-23 01:50:45,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:50:45,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:50:45,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:50:46,161 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-23 01:50:46,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:50:46,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30827446] [2024-11-23 01:50:46,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30827446] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:50:46,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:50:46,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-23 01:50:46,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980683937] [2024-11-23 01:50:46,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:50:46,162 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-23 01:50:46,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:50:46,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-23 01:50:46,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-23 01:50:46,163 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 39 [2024-11-23 01:50:46,164 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 441 places, 883 transitions, 18967 flow. Second operand has 8 states, 8 states have (on average 17.75) internal successors, (142), 8 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:50:46,164 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:50:46,164 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 39 [2024-11-23 01:50:46,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:50:47,660 INFO L124 PetriNetUnfolderBase]: 1720/4472 cut-off events. [2024-11-23 01:50:47,661 INFO L125 PetriNetUnfolderBase]: For 202674/203095 co-relation queries the response was YES. [2024-11-23 01:50:47,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44943 conditions, 4472 events. 1720/4472 cut-off events. For 202674/203095 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 36844 event pairs, 219 based on Foata normal form. 48/4507 useless extension candidates. Maximal degree in co-relation 44652. Up to 1618 conditions per place. [2024-11-23 01:50:47,742 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 806 selfloop transitions, 110 changer transitions 0/969 dead transitions. [2024-11-23 01:50:47,742 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 448 places, 969 transitions, 21964 flow [2024-11-23 01:50:47,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-23 01:50:47,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-23 01:50:47,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 205 transitions. [2024-11-23 01:50:47,743 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.657051282051282 [2024-11-23 01:50:47,743 INFO L175 Difference]: Start difference. First operand has 441 places, 883 transitions, 18967 flow. Second operand 8 states and 205 transitions. [2024-11-23 01:50:47,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 448 places, 969 transitions, 21964 flow [2024-11-23 01:50:48,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 441 places, 969 transitions, 21778 flow, removed 47 selfloop flow, removed 7 redundant places. [2024-11-23 01:50:48,786 INFO L231 Difference]: Finished difference. Result has 444 places, 876 transitions, 18870 flow [2024-11-23 01:50:48,787 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=18317, PETRI_DIFFERENCE_MINUEND_PLACES=434, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=865, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=760, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=18870, PETRI_PLACES=444, PETRI_TRANSITIONS=876} [2024-11-23 01:50:48,787 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 405 predicate places. [2024-11-23 01:50:48,787 INFO L471 AbstractCegarLoop]: Abstraction has has 444 places, 876 transitions, 18870 flow [2024-11-23 01:50:48,788 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.75) internal successors, (142), 8 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:50:48,788 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:50:48,788 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:50:48,788 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-11-23 01:50:48,788 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-11-23 01:50:48,788 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:50:48,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1514195639, now seen corresponding path program 1 times [2024-11-23 01:50:48,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:50:48,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372481338] [2024-11-23 01:50:48,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:50:48,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:50:48,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:50:49,031 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-23 01:50:49,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:50:49,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372481338] [2024-11-23 01:50:49,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372481338] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:50:49,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:50:49,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-23 01:50:49,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645223858] [2024-11-23 01:50:49,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:50:49,032 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-23 01:50:49,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:50:49,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-23 01:50:49,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-11-23 01:50:49,039 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-11-23 01:50:49,039 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 444 places, 876 transitions, 18870 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:50:49,039 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:50:49,040 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-11-23 01:50:49,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:50:51,607 INFO L124 PetriNetUnfolderBase]: 3068/6593 cut-off events. [2024-11-23 01:50:51,607 INFO L125 PetriNetUnfolderBase]: For 307631/307663 co-relation queries the response was YES. [2024-11-23 01:50:51,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65858 conditions, 6593 events. 3068/6593 cut-off events. For 307631/307663 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 50809 event pairs, 427 based on Foata normal form. 30/6623 useless extension candidates. Maximal degree in co-relation 65563. Up to 2995 conditions per place. [2024-11-23 01:50:51,726 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 744 selfloop transitions, 403 changer transitions 0/1154 dead transitions. [2024-11-23 01:50:51,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 461 places, 1154 transitions, 26497 flow [2024-11-23 01:50:51,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-23 01:50:51,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-23 01:50:51,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 321 transitions. [2024-11-23 01:50:51,727 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45726495726495725 [2024-11-23 01:50:51,727 INFO L175 Difference]: Start difference. First operand has 444 places, 876 transitions, 18870 flow. Second operand 18 states and 321 transitions. [2024-11-23 01:50:51,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 461 places, 1154 transitions, 26497 flow [2024-11-23 01:50:53,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 457 places, 1154 transitions, 26280 flow, removed 19 selfloop flow, removed 4 redundant places. [2024-11-23 01:50:53,155 INFO L231 Difference]: Finished difference. Result has 468 places, 965 transitions, 22178 flow [2024-11-23 01:50:53,156 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=18696, PETRI_DIFFERENCE_MINUEND_PLACES=440, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=876, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=319, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=532, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=22178, PETRI_PLACES=468, PETRI_TRANSITIONS=965} [2024-11-23 01:50:53,157 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 429 predicate places. [2024-11-23 01:50:53,157 INFO L471 AbstractCegarLoop]: Abstraction has has 468 places, 965 transitions, 22178 flow [2024-11-23 01:50:53,157 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:50:53,157 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:50:53,157 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:50:53,157 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-11-23 01:50:53,157 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-11-23 01:50:53,158 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:50:53,158 INFO L85 PathProgramCache]: Analyzing trace with hash 1646701054, now seen corresponding path program 2 times [2024-11-23 01:50:53,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:50:53,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644078962] [2024-11-23 01:50:53,158 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 01:50:53,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:50:53,168 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-23 01:50:53,168 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 01:50:53,262 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-23 01:50:53,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:50:53,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644078962] [2024-11-23 01:50:53,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644078962] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:50:53,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:50:53,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-23 01:50:53,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871007214] [2024-11-23 01:50:53,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:50:53,264 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-23 01:50:53,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:50:53,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-23 01:50:53,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-23 01:50:53,264 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 39 [2024-11-23 01:50:53,265 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 468 places, 965 transitions, 22178 flow. Second operand has 8 states, 8 states have (on average 17.75) internal successors, (142), 8 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:50:53,265 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:50:53,265 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 39 [2024-11-23 01:50:53,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:50:54,934 INFO L124 PetriNetUnfolderBase]: 1767/4689 cut-off events. [2024-11-23 01:50:54,935 INFO L125 PetriNetUnfolderBase]: For 238773/239136 co-relation queries the response was YES. [2024-11-23 01:50:54,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49748 conditions, 4689 events. 1767/4689 cut-off events. For 238773/239136 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 39519 event pairs, 231 based on Foata normal form. 42/4723 useless extension candidates. Maximal degree in co-relation 49442. Up to 1949 conditions per place. [2024-11-23 01:50:55,021 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 834 selfloop transitions, 96 changer transitions 0/994 dead transitions. [2024-11-23 01:50:55,021 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 467 places, 994 transitions, 24487 flow [2024-11-23 01:50:55,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-23 01:50:55,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-23 01:50:55,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 210 transitions. [2024-11-23 01:50:55,022 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6730769230769231 [2024-11-23 01:50:55,022 INFO L175 Difference]: Start difference. First operand has 468 places, 965 transitions, 22178 flow. Second operand 8 states and 210 transitions. [2024-11-23 01:50:55,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 467 places, 994 transitions, 24487 flow [2024-11-23 01:50:56,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 447 places, 994 transitions, 23631 flow, removed 130 selfloop flow, removed 20 redundant places. [2024-11-23 01:50:56,132 INFO L231 Difference]: Finished difference. Result has 449 places, 914 transitions, 20562 flow [2024-11-23 01:50:56,133 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=20048, PETRI_DIFFERENCE_MINUEND_PLACES=440, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=902, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=813, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=20562, PETRI_PLACES=449, PETRI_TRANSITIONS=914} [2024-11-23 01:50:56,133 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 410 predicate places. [2024-11-23 01:50:56,133 INFO L471 AbstractCegarLoop]: Abstraction has has 449 places, 914 transitions, 20562 flow [2024-11-23 01:50:56,134 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.75) internal successors, (142), 8 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:50:56,134 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:50:56,134 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:50:56,134 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-11-23 01:50:56,134 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-11-23 01:50:56,134 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:50:56,134 INFO L85 PathProgramCache]: Analyzing trace with hash -217600325, now seen corresponding path program 2 times [2024-11-23 01:50:56,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:50:56,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146154503] [2024-11-23 01:50:56,134 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 01:50:56,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:50:56,143 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-23 01:50:56,144 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 01:50:56,378 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-23 01:50:56,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:50:56,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146154503] [2024-11-23 01:50:56,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146154503] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:50:56,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:50:56,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-23 01:50:56,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080877268] [2024-11-23 01:50:56,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:50:56,379 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-23 01:50:56,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:50:56,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-23 01:50:56,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-23 01:50:56,404 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 39 [2024-11-23 01:50:56,405 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 449 places, 914 transitions, 20562 flow. Second operand has 10 states, 10 states have (on average 13.6) internal successors, (136), 10 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:50:56,405 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:50:56,405 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 39 [2024-11-23 01:50:56,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:50:58,426 INFO L124 PetriNetUnfolderBase]: 2370/5648 cut-off events. [2024-11-23 01:50:58,426 INFO L125 PetriNetUnfolderBase]: For 257910/257984 co-relation queries the response was YES. [2024-11-23 01:50:58,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58417 conditions, 5648 events. 2370/5648 cut-off events. For 257910/257984 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 46539 event pairs, 421 based on Foata normal form. 36/5675 useless extension candidates. Maximal degree in co-relation 58119. Up to 3513 conditions per place. [2024-11-23 01:50:58,525 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 732 selfloop transitions, 257 changer transitions 0/1038 dead transitions. [2024-11-23 01:50:58,525 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 462 places, 1038 transitions, 24993 flow [2024-11-23 01:50:58,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-23 01:50:58,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-23 01:50:58,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 274 transitions. [2024-11-23 01:50:58,526 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5018315018315018 [2024-11-23 01:50:58,526 INFO L175 Difference]: Start difference. First operand has 449 places, 914 transitions, 20562 flow. Second operand 14 states and 274 transitions. [2024-11-23 01:50:58,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 462 places, 1038 transitions, 24993 flow [2024-11-23 01:50:59,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 458 places, 1038 transitions, 24794 flow, removed 33 selfloop flow, removed 4 redundant places. [2024-11-23 01:50:59,747 INFO L231 Difference]: Finished difference. Result has 464 places, 941 transitions, 22052 flow [2024-11-23 01:50:59,747 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=20386, PETRI_DIFFERENCE_MINUEND_PLACES=445, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=914, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=231, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=661, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=22052, PETRI_PLACES=464, PETRI_TRANSITIONS=941} [2024-11-23 01:50:59,748 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 425 predicate places. [2024-11-23 01:50:59,748 INFO L471 AbstractCegarLoop]: Abstraction has has 464 places, 941 transitions, 22052 flow [2024-11-23 01:50:59,748 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.6) internal successors, (136), 10 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:50:59,748 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:50:59,748 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:50:59,748 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-11-23 01:50:59,748 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-11-23 01:50:59,748 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:50:59,748 INFO L85 PathProgramCache]: Analyzing trace with hash -1226677276, now seen corresponding path program 3 times [2024-11-23 01:50:59,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:50:59,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963541692] [2024-11-23 01:50:59,749 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-23 01:50:59,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:50:59,757 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-23 01:50:59,758 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 01:50:59,918 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-23 01:50:59,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:50:59,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963541692] [2024-11-23 01:50:59,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963541692] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:50:59,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:50:59,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-23 01:50:59,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813750775] [2024-11-23 01:50:59,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:50:59,919 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-23 01:50:59,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:50:59,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-23 01:50:59,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-23 01:50:59,932 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-11-23 01:50:59,932 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 464 places, 941 transitions, 22052 flow. Second operand has 11 states, 11 states have (on average 12.454545454545455) internal successors, (137), 11 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:50:59,932 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:50:59,932 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-11-23 01:50:59,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:51:02,500 INFO L124 PetriNetUnfolderBase]: 2755/6314 cut-off events. [2024-11-23 01:51:02,500 INFO L125 PetriNetUnfolderBase]: For 317162/317194 co-relation queries the response was YES. [2024-11-23 01:51:02,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67941 conditions, 6314 events. 2755/6314 cut-off events. For 317162/317194 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 51479 event pairs, 468 based on Foata normal form. 23/6337 useless extension candidates. Maximal degree in co-relation 67637. Up to 3833 conditions per place. [2024-11-23 01:51:02,620 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 788 selfloop transitions, 358 changer transitions 0/1167 dead transitions. [2024-11-23 01:51:02,620 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 484 places, 1167 transitions, 29324 flow [2024-11-23 01:51:02,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-23 01:51:02,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-23 01:51:02,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 391 transitions. [2024-11-23 01:51:02,622 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47741147741147744 [2024-11-23 01:51:02,622 INFO L175 Difference]: Start difference. First operand has 464 places, 941 transitions, 22052 flow. Second operand 21 states and 391 transitions. [2024-11-23 01:51:02,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 484 places, 1167 transitions, 29324 flow [2024-11-23 01:51:04,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 479 places, 1167 transitions, 29013 flow, removed 50 selfloop flow, removed 5 redundant places. [2024-11-23 01:51:04,301 INFO L231 Difference]: Finished difference. Result has 490 places, 1012 transitions, 24897 flow [2024-11-23 01:51:04,302 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=21795, PETRI_DIFFERENCE_MINUEND_PLACES=459, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=941, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=292, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=627, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=24897, PETRI_PLACES=490, PETRI_TRANSITIONS=1012} [2024-11-23 01:51:04,303 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 451 predicate places. [2024-11-23 01:51:04,303 INFO L471 AbstractCegarLoop]: Abstraction has has 490 places, 1012 transitions, 24897 flow [2024-11-23 01:51:04,303 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.454545454545455) internal successors, (137), 11 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:51:04,303 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:51:04,303 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:51:04,303 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-11-23 01:51:04,304 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-11-23 01:51:04,304 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:51:04,304 INFO L85 PathProgramCache]: Analyzing trace with hash -974262526, now seen corresponding path program 3 times [2024-11-23 01:51:04,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:51:04,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972087495] [2024-11-23 01:51:04,305 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-23 01:51:04,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:51:04,317 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-23 01:51:04,317 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 01:51:04,427 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-23 01:51:04,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:51:04,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972087495] [2024-11-23 01:51:04,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972087495] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:51:04,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:51:04,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-23 01:51:04,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297010306] [2024-11-23 01:51:04,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:51:04,428 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-23 01:51:04,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:51:04,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-23 01:51:04,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-23 01:51:04,428 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 39 [2024-11-23 01:51:04,428 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 490 places, 1012 transitions, 24897 flow. Second operand has 8 states, 8 states have (on average 17.75) internal successors, (142), 8 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:51:04,429 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:51:04,429 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 39 [2024-11-23 01:51:04,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:51:06,713 INFO L124 PetriNetUnfolderBase]: 1956/5174 cut-off events. [2024-11-23 01:51:06,713 INFO L125 PetriNetUnfolderBase]: For 255750/256206 co-relation queries the response was YES. [2024-11-23 01:51:06,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55892 conditions, 5174 events. 1956/5174 cut-off events. For 255750/256206 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 44737 event pairs, 255 based on Foata normal form. 50/5213 useless extension candidates. Maximal degree in co-relation 55576. Up to 2147 conditions per place. [2024-11-23 01:51:06,815 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 871 selfloop transitions, 128 changer transitions 0/1076 dead transitions. [2024-11-23 01:51:06,815 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 497 places, 1076 transitions, 28007 flow [2024-11-23 01:51:06,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-23 01:51:06,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-23 01:51:06,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 208 transitions. [2024-11-23 01:51:06,816 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-23 01:51:06,816 INFO L175 Difference]: Start difference. First operand has 490 places, 1012 transitions, 24897 flow. Second operand 8 states and 208 transitions. [2024-11-23 01:51:06,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 497 places, 1076 transitions, 28007 flow [2024-11-23 01:51:08,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 490 places, 1076 transitions, 27632 flow, removed 84 selfloop flow, removed 7 redundant places. [2024-11-23 01:51:08,326 INFO L231 Difference]: Finished difference. Result has 494 places, 1009 transitions, 24832 flow [2024-11-23 01:51:08,327 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=23956, PETRI_DIFFERENCE_MINUEND_PLACES=483, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=990, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=868, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=24832, PETRI_PLACES=494, PETRI_TRANSITIONS=1009} [2024-11-23 01:51:08,327 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 455 predicate places. [2024-11-23 01:51:08,327 INFO L471 AbstractCegarLoop]: Abstraction has has 494 places, 1009 transitions, 24832 flow [2024-11-23 01:51:08,327 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.75) internal successors, (142), 8 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:51:08,327 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:51:08,327 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:51:08,327 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-11-23 01:51:08,328 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-11-23 01:51:08,328 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:51:08,328 INFO L85 PathProgramCache]: Analyzing trace with hash 847607727, now seen corresponding path program 3 times [2024-11-23 01:51:08,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:51:08,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005185427] [2024-11-23 01:51:08,328 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-23 01:51:08,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:51:08,341 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-23 01:51:08,341 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 01:51:08,560 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-23 01:51:08,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:51:08,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005185427] [2024-11-23 01:51:08,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005185427] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:51:08,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:51:08,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-23 01:51:08,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359146594] [2024-11-23 01:51:08,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:51:08,561 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-23 01:51:08,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:51:08,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-23 01:51:08,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-23 01:51:08,584 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 39 [2024-11-23 01:51:08,585 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 494 places, 1009 transitions, 24832 flow. Second operand has 10 states, 10 states have (on average 13.6) internal successors, (136), 10 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:51:08,585 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:51:08,585 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 39 [2024-11-23 01:51:08,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:51:11,518 INFO L124 PetriNetUnfolderBase]: 2686/6430 cut-off events. [2024-11-23 01:51:11,519 INFO L125 PetriNetUnfolderBase]: For 355448/355520 co-relation queries the response was YES. [2024-11-23 01:51:11,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71607 conditions, 6430 events. 2686/6430 cut-off events. For 355448/355520 co-relation queries the response was YES. Maximal size of possible extension queue 279. Compared 54459 event pairs, 441 based on Foata normal form. 40/6465 useless extension candidates. Maximal degree in co-relation 71289. Up to 3904 conditions per place. [2024-11-23 01:51:11,645 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 808 selfloop transitions, 329 changer transitions 0/1196 dead transitions. [2024-11-23 01:51:11,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 511 places, 1196 transitions, 31351 flow [2024-11-23 01:51:11,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-23 01:51:11,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-23 01:51:11,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 340 transitions. [2024-11-23 01:51:11,646 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4843304843304843 [2024-11-23 01:51:11,646 INFO L175 Difference]: Start difference. First operand has 494 places, 1009 transitions, 24832 flow. Second operand 18 states and 340 transitions. [2024-11-23 01:51:11,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 511 places, 1196 transitions, 31351 flow [2024-11-23 01:51:13,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 509 places, 1196 transitions, 31186 flow, removed 56 selfloop flow, removed 2 redundant places. [2024-11-23 01:51:13,479 INFO L231 Difference]: Finished difference. Result has 515 places, 1078 transitions, 27969 flow [2024-11-23 01:51:13,479 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=24706, PETRI_DIFFERENCE_MINUEND_PLACES=492, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1009, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=264, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=698, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=27969, PETRI_PLACES=515, PETRI_TRANSITIONS=1078} [2024-11-23 01:51:13,480 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 476 predicate places. [2024-11-23 01:51:13,480 INFO L471 AbstractCegarLoop]: Abstraction has has 515 places, 1078 transitions, 27969 flow [2024-11-23 01:51:13,480 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.6) internal successors, (136), 10 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:51:13,480 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:51:13,480 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:51:13,480 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-11-23 01:51:13,480 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-11-23 01:51:13,480 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:51:13,480 INFO L85 PathProgramCache]: Analyzing trace with hash -214063561, now seen corresponding path program 4 times [2024-11-23 01:51:13,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:51:13,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327020175] [2024-11-23 01:51:13,481 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-23 01:51:13,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:51:13,492 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-23 01:51:13,493 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 01:51:13,703 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-23 01:51:13,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:51:13,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327020175] [2024-11-23 01:51:13,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327020175] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:51:13,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:51:13,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-23 01:51:13,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010485792] [2024-11-23 01:51:13,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:51:13,705 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-23 01:51:13,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:51:13,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-23 01:51:13,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-11-23 01:51:13,719 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-11-23 01:51:13,720 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 515 places, 1078 transitions, 27969 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:51:13,720 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:51:13,720 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-11-23 01:51:13,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:51:17,324 INFO L124 PetriNetUnfolderBase]: 3658/7847 cut-off events. [2024-11-23 01:51:17,325 INFO L125 PetriNetUnfolderBase]: For 438290/438337 co-relation queries the response was YES. [2024-11-23 01:51:17,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87428 conditions, 7847 events. 3658/7847 cut-off events. For 438290/438337 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 62593 event pairs, 449 based on Foata normal form. 30/7877 useless extension candidates. Maximal degree in co-relation 87103. Up to 3380 conditions per place. [2024-11-23 01:51:17,528 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 770 selfloop transitions, 535 changer transitions 0/1312 dead transitions. [2024-11-23 01:51:17,528 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 534 places, 1312 transitions, 35513 flow [2024-11-23 01:51:17,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-23 01:51:17,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-11-23 01:51:17,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 355 transitions. [2024-11-23 01:51:17,529 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4551282051282051 [2024-11-23 01:51:17,529 INFO L175 Difference]: Start difference. First operand has 515 places, 1078 transitions, 27969 flow. Second operand 20 states and 355 transitions. [2024-11-23 01:51:17,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 534 places, 1312 transitions, 35513 flow [2024-11-23 01:51:20,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 525 places, 1312 transitions, 35192 flow, removed 57 selfloop flow, removed 9 redundant places. [2024-11-23 01:51:20,207 INFO L231 Difference]: Finished difference. Result has 534 places, 1131 transitions, 31128 flow [2024-11-23 01:51:20,208 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=27666, PETRI_DIFFERENCE_MINUEND_PLACES=506, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1078, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=483, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=580, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=31128, PETRI_PLACES=534, PETRI_TRANSITIONS=1131} [2024-11-23 01:51:20,208 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 495 predicate places. [2024-11-23 01:51:20,208 INFO L471 AbstractCegarLoop]: Abstraction has has 534 places, 1131 transitions, 31128 flow [2024-11-23 01:51:20,208 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:51:20,209 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:51:20,209 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:51:20,209 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-11-23 01:51:20,209 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-11-23 01:51:20,209 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:51:20,209 INFO L85 PathProgramCache]: Analyzing trace with hash -213468915, now seen corresponding path program 5 times [2024-11-23 01:51:20,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:51:20,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421019535] [2024-11-23 01:51:20,209 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-23 01:51:20,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:51:20,228 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2024-11-23 01:51:20,229 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 01:51:20,485 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-23 01:51:20,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:51:20,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421019535] [2024-11-23 01:51:20,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421019535] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:51:20,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:51:20,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-23 01:51:20,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835401341] [2024-11-23 01:51:20,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:51:20,486 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-23 01:51:20,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:51:20,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-23 01:51:20,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-11-23 01:51:20,512 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-11-23 01:51:20,512 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 534 places, 1131 transitions, 31128 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:51:20,512 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:51:20,512 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-11-23 01:51:20,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:51:24,736 INFO L124 PetriNetUnfolderBase]: 3712/7944 cut-off events. [2024-11-23 01:51:24,736 INFO L125 PetriNetUnfolderBase]: For 491283/491331 co-relation queries the response was YES. [2024-11-23 01:51:24,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92511 conditions, 7944 events. 3712/7944 cut-off events. For 491283/491331 co-relation queries the response was YES. Maximal size of possible extension queue 306. Compared 63489 event pairs, 478 based on Foata normal form. 30/7974 useless extension candidates. Maximal degree in co-relation 92177. Up to 3441 conditions per place. [2024-11-23 01:51:24,906 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 767 selfloop transitions, 568 changer transitions 0/1342 dead transitions. [2024-11-23 01:51:24,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 557 places, 1342 transitions, 37933 flow [2024-11-23 01:51:24,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-23 01:51:24,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-23 01:51:24,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 400 transitions. [2024-11-23 01:51:24,908 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42735042735042733 [2024-11-23 01:51:24,908 INFO L175 Difference]: Start difference. First operand has 534 places, 1131 transitions, 31128 flow. Second operand 24 states and 400 transitions. [2024-11-23 01:51:24,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 557 places, 1342 transitions, 37933 flow [2024-11-23 01:51:28,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 550 places, 1342 transitions, 37644 flow, removed 57 selfloop flow, removed 7 redundant places. [2024-11-23 01:51:28,389 INFO L231 Difference]: Finished difference. Result has 557 places, 1165 transitions, 33791 flow [2024-11-23 01:51:28,390 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=30845, PETRI_DIFFERENCE_MINUEND_PLACES=527, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=539, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=585, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=33791, PETRI_PLACES=557, PETRI_TRANSITIONS=1165} [2024-11-23 01:51:28,390 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 518 predicate places. [2024-11-23 01:51:28,390 INFO L471 AbstractCegarLoop]: Abstraction has has 557 places, 1165 transitions, 33791 flow [2024-11-23 01:51:28,391 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:51:28,391 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:51:28,391 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:51:28,391 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-11-23 01:51:28,391 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-11-23 01:51:28,391 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:51:28,391 INFO L85 PathProgramCache]: Analyzing trace with hash 702761034, now seen corresponding path program 4 times [2024-11-23 01:51:28,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:51:28,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722329207] [2024-11-23 01:51:28,392 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-23 01:51:28,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:51:28,407 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-23 01:51:28,408 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 01:51:28,556 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-23 01:51:28,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:51:28,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722329207] [2024-11-23 01:51:28,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722329207] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:51:28,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:51:28,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-23 01:51:28,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428661548] [2024-11-23 01:51:28,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:51:28,559 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 01:51:28,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:51:28,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 01:51:28,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-23 01:51:28,560 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 39 [2024-11-23 01:51:28,560 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 557 places, 1165 transitions, 33791 flow. Second operand has 7 states, 7 states have (on average 18.0) internal successors, (126), 7 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:51:28,560 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:51:28,561 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 39 [2024-11-23 01:51:28,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:51:31,348 INFO L124 PetriNetUnfolderBase]: 2022/5371 cut-off events. [2024-11-23 01:51:31,348 INFO L125 PetriNetUnfolderBase]: For 360616/361041 co-relation queries the response was YES. [2024-11-23 01:51:31,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64169 conditions, 5371 events. 2022/5371 cut-off events. For 360616/361041 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 46910 event pairs, 274 based on Foata normal form. 41/5399 useless extension candidates. Maximal degree in co-relation 63827. Up to 2433 conditions per place. [2024-11-23 01:51:31,535 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 885 selfloop transitions, 128 changer transitions 0/1102 dead transitions. [2024-11-23 01:51:31,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 552 places, 1102 transitions, 33128 flow [2024-11-23 01:51:31,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-23 01:51:31,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-23 01:51:31,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 179 transitions. [2024-11-23 01:51:31,536 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6556776556776557 [2024-11-23 01:51:31,536 INFO L175 Difference]: Start difference. First operand has 557 places, 1165 transitions, 33791 flow. Second operand 7 states and 179 transitions. [2024-11-23 01:51:31,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 552 places, 1102 transitions, 33128 flow