./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/fib_safe-11.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/fib_safe-11.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 67ab3b79be699544cc101a76da66f98a1e0e6116d5865ddc6f998abd49388964 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 23:22:39,373 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 23:22:39,431 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-24 23:22:39,435 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 23:22:39,436 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 23:22:39,475 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 23:22:39,477 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 23:22:39,478 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 23:22:39,478 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 23:22:39,479 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 23:22:39,480 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 23:22:39,480 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 23:22:39,480 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 23:22:39,481 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 23:22:39,481 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 23:22:39,482 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 23:22:39,483 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 23:22:39,483 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 23:22:39,483 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 23:22:39,486 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 23:22:39,486 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 23:22:39,487 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 23:22:39,487 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 23:22:39,487 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 23:22:39,487 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 23:22:39,487 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-24 23:22:39,487 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-24 23:22:39,487 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 23:22:39,487 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 23:22:39,487 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 23:22:39,488 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 23:22:39,488 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 23:22:39,488 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 23:22:39,488 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 23:22:39,488 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 23:22:39,488 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 23:22:39,488 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 23:22:39,489 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 23:22:39,489 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 23:22:39,489 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 23:22:39,489 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 23:22:39,491 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 23:22:39,491 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 23:22:39,491 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 23:22:39,492 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 67ab3b79be699544cc101a76da66f98a1e0e6116d5865ddc6f998abd49388964 [2024-10-24 23:22:39,738 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 23:22:39,756 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 23:22:39,758 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 23:22:39,759 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 23:22:39,759 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 23:22:39,760 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/fib_safe-11.i [2024-10-24 23:22:41,074 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 23:22:41,281 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 23:22:41,282 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/fib_safe-11.i [2024-10-24 23:22:41,295 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ccb72a3f/3551190ceff0442e9e431c40333e5529/FLAGab4fa8f2e [2024-10-24 23:22:41,307 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ccb72a3f/3551190ceff0442e9e431c40333e5529 [2024-10-24 23:22:41,309 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 23:22:41,311 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 23:22:41,312 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 23:22:41,313 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 23:22:41,317 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 23:22:41,317 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:22:41" (1/1) ... [2024-10-24 23:22:41,318 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@468ee4b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:22:41, skipping insertion in model container [2024-10-24 23:22:41,318 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:22:41" (1/1) ... [2024-10-24 23:22:41,353 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 23:22:41,651 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 23:22:41,657 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 23:22:41,699 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 23:22:41,723 INFO L204 MainTranslator]: Completed translation [2024-10-24 23:22:41,724 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:22:41 WrapperNode [2024-10-24 23:22:41,724 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 23:22:41,725 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 23:22:41,725 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 23:22:41,725 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 23:22:41,729 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:22:41" (1/1) ... [2024-10-24 23:22:41,738 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:22:41" (1/1) ... [2024-10-24 23:22:41,755 INFO L138 Inliner]: procedures = 164, calls = 21, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 72 [2024-10-24 23:22:41,755 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 23:22:41,756 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 23:22:41,756 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 23:22:41,756 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 23:22:41,762 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:22:41" (1/1) ... [2024-10-24 23:22:41,763 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:22:41" (1/1) ... [2024-10-24 23:22:41,764 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:22:41" (1/1) ... [2024-10-24 23:22:41,773 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-24 23:22:41,773 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:22:41" (1/1) ... [2024-10-24 23:22:41,773 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:22:41" (1/1) ... [2024-10-24 23:22:41,776 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:22:41" (1/1) ... [2024-10-24 23:22:41,778 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:22:41" (1/1) ... [2024-10-24 23:22:41,779 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:22:41" (1/1) ... [2024-10-24 23:22:41,780 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:22:41" (1/1) ... [2024-10-24 23:22:41,782 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 23:22:41,782 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 23:22:41,783 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 23:22:41,783 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 23:22:41,783 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:22:41" (1/1) ... [2024-10-24 23:22:41,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 23:22:41,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:22:41,826 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-24 23:22:41,828 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-24 23:22:41,874 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-10-24 23:22:41,875 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-10-24 23:22:41,875 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-10-24 23:22:41,875 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-10-24 23:22:41,875 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-24 23:22:41,875 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 23:22:41,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 23:22:41,875 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-24 23:22:41,876 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 23:22:41,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 23:22:41,877 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-24 23:22:41,990 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 23:22:41,992 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 23:22:42,152 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-24 23:22:42,152 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 23:22:42,255 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 23:22:42,256 INFO L314 CfgBuilder]: Removed 3 assume(true) statements. [2024-10-24 23:22:42,256 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:22:42 BoogieIcfgContainer [2024-10-24 23:22:42,257 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 23:22:42,259 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 23:22:42,259 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 23:22:42,262 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 23:22:42,262 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 11:22:41" (1/3) ... [2024-10-24 23:22:42,263 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bd6b3f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:22:42, skipping insertion in model container [2024-10-24 23:22:42,263 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:22:41" (2/3) ... [2024-10-24 23:22:42,264 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bd6b3f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:22:42, skipping insertion in model container [2024-10-24 23:22:42,264 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:22:42" (3/3) ... [2024-10-24 23:22:42,265 INFO L112 eAbstractionObserver]: Analyzing ICFG fib_safe-11.i [2024-10-24 23:22:42,280 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 23:22:42,280 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2024-10-24 23:22:42,280 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-24 23:22:42,312 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-24 23:22:42,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 48 places, 44 transitions, 96 flow [2024-10-24 23:22:42,363 INFO L124 PetriNetUnfolderBase]: 3/42 cut-off events. [2024-10-24 23:22:42,363 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 23:22:42,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49 conditions, 42 events. 3/42 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 117 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2024-10-24 23:22:42,365 INFO L82 GeneralOperation]: Start removeDead. Operand has 48 places, 44 transitions, 96 flow [2024-10-24 23:22:42,367 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 46 places, 42 transitions, 90 flow [2024-10-24 23:22:42,376 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 23:22:42,381 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;@4fc8aea2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 23:22:42,382 INFO L334 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2024-10-24 23:22:42,387 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 23:22:42,387 INFO L124 PetriNetUnfolderBase]: 0/12 cut-off events. [2024-10-24 23:22:42,387 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 23:22:42,387 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:22:42,388 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:22:42,388 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-10-24 23:22:42,395 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:22:42,395 INFO L85 PathProgramCache]: Analyzing trace with hash -1464023297, now seen corresponding path program 1 times [2024-10-24 23:22:42,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:22:42,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250846443] [2024-10-24 23:22:42,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:22:42,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:22:42,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:22:42,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:22:42,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:22:42,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250846443] [2024-10-24 23:22:42,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250846443] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:22:42,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:22:42,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 23:22:42,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435503053] [2024-10-24 23:22:42,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:22:42,799 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:22:42,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:22:42,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:22:42,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-24 23:22:42,877 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2024-10-24 23:22:42,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 42 transitions, 90 flow. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:22:42,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:22:42,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2024-10-24 23:22:42,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:22:43,064 INFO L124 PetriNetUnfolderBase]: 657/1293 cut-off events. [2024-10-24 23:22:43,064 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-10-24 23:22:43,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2312 conditions, 1293 events. 657/1293 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 8039 event pairs, 156 based on Foata normal form. 0/975 useless extension candidates. Maximal degree in co-relation 2296. Up to 514 conditions per place. [2024-10-24 23:22:43,076 INFO L140 encePairwiseOnDemand]: 36/44 looper letters, 46 selfloop transitions, 5 changer transitions 0/69 dead transitions. [2024-10-24 23:22:43,076 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 69 transitions, 249 flow [2024-10-24 23:22:43,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 23:22:43,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 23:22:43,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 135 transitions. [2024-10-24 23:22:43,085 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7670454545454546 [2024-10-24 23:22:43,086 INFO L175 Difference]: Start difference. First operand has 46 places, 42 transitions, 90 flow. Second operand 4 states and 135 transitions. [2024-10-24 23:22:43,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 69 transitions, 249 flow [2024-10-24 23:22:43,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 69 transitions, 246 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-24 23:22:43,090 INFO L231 Difference]: Finished difference. Result has 48 places, 45 transitions, 119 flow [2024-10-24 23:22:43,092 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=119, PETRI_PLACES=48, PETRI_TRANSITIONS=45} [2024-10-24 23:22:43,094 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 2 predicate places. [2024-10-24 23:22:43,094 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 45 transitions, 119 flow [2024-10-24 23:22:43,096 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:22:43,096 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:22:43,096 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:22:43,096 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 23:22:43,096 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-10-24 23:22:43,097 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:22:43,097 INFO L85 PathProgramCache]: Analyzing trace with hash 1801374430, now seen corresponding path program 1 times [2024-10-24 23:22:43,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:22:43,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220714356] [2024-10-24 23:22:43,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:22:43,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:22:43,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:22:43,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:22:43,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:22:43,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220714356] [2024-10-24 23:22:43,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220714356] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:22:43,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:22:43,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-24 23:22:43,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170667032] [2024-10-24 23:22:43,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:22:43,182 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 23:22:43,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:22:43,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 23:22:43,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 23:22:43,190 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 44 [2024-10-24 23:22:43,191 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 45 transitions, 119 flow. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:22:43,191 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:22:43,191 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 44 [2024-10-24 23:22:43,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:22:43,519 INFO L124 PetriNetUnfolderBase]: 1169/2451 cut-off events. [2024-10-24 23:22:43,519 INFO L125 PetriNetUnfolderBase]: For 333/333 co-relation queries the response was YES. [2024-10-24 23:22:43,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4923 conditions, 2451 events. 1169/2451 cut-off events. For 333/333 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 18190 event pairs, 379 based on Foata normal form. 53/2095 useless extension candidates. Maximal degree in co-relation 4907. Up to 1025 conditions per place. [2024-10-24 23:22:43,531 INFO L140 encePairwiseOnDemand]: 41/44 looper letters, 42 selfloop transitions, 2 changer transitions 0/63 dead transitions. [2024-10-24 23:22:43,531 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 63 transitions, 263 flow [2024-10-24 23:22:43,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 23:22:43,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 23:22:43,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 102 transitions. [2024-10-24 23:22:43,534 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7727272727272727 [2024-10-24 23:22:43,534 INFO L175 Difference]: Start difference. First operand has 48 places, 45 transitions, 119 flow. Second operand 3 states and 102 transitions. [2024-10-24 23:22:43,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 63 transitions, 263 flow [2024-10-24 23:22:43,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 63 transitions, 263 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-24 23:22:43,536 INFO L231 Difference]: Finished difference. Result has 51 places, 46 transitions, 131 flow [2024-10-24 23:22:43,537 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=131, PETRI_PLACES=51, PETRI_TRANSITIONS=46} [2024-10-24 23:22:43,537 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 5 predicate places. [2024-10-24 23:22:43,537 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 46 transitions, 131 flow [2024-10-24 23:22:43,538 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:22:43,538 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:22:43,538 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:22:43,538 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-24 23:22:43,539 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-10-24 23:22:43,539 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:22:43,539 INFO L85 PathProgramCache]: Analyzing trace with hash 1822895874, now seen corresponding path program 1 times [2024-10-24 23:22:43,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:22:43,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985449297] [2024-10-24 23:22:43,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:22:43,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:22:43,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:22:43,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:22:43,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:22:43,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985449297] [2024-10-24 23:22:43,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985449297] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:22:43,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:22:43,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 23:22:43,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176373698] [2024-10-24 23:22:43,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:22:43,626 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:22:43,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:22:43,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:22:43,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 23:22:43,639 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2024-10-24 23:22:43,640 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 46 transitions, 131 flow. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:22:43,640 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:22:43,640 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2024-10-24 23:22:43,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:22:43,854 INFO L124 PetriNetUnfolderBase]: 1401/2500 cut-off events. [2024-10-24 23:22:43,855 INFO L125 PetriNetUnfolderBase]: For 470/520 co-relation queries the response was YES. [2024-10-24 23:22:43,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5615 conditions, 2500 events. 1401/2500 cut-off events. For 470/520 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 16320 event pairs, 357 based on Foata normal form. 116/2184 useless extension candidates. Maximal degree in co-relation 5596. Up to 1235 conditions per place. [2024-10-24 23:22:43,870 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 58 selfloop transitions, 3 changer transitions 0/78 dead transitions. [2024-10-24 23:22:43,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 78 transitions, 347 flow [2024-10-24 23:22:43,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 23:22:43,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 23:22:43,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 135 transitions. [2024-10-24 23:22:43,871 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7670454545454546 [2024-10-24 23:22:43,872 INFO L175 Difference]: Start difference. First operand has 51 places, 46 transitions, 131 flow. Second operand 4 states and 135 transitions. [2024-10-24 23:22:43,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 78 transitions, 347 flow [2024-10-24 23:22:43,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 78 transitions, 343 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 23:22:43,874 INFO L231 Difference]: Finished difference. Result has 55 places, 48 transitions, 153 flow [2024-10-24 23:22:43,874 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=153, PETRI_PLACES=55, PETRI_TRANSITIONS=48} [2024-10-24 23:22:43,875 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 9 predicate places. [2024-10-24 23:22:43,875 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 48 transitions, 153 flow [2024-10-24 23:22:43,875 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:22:43,875 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:22:43,875 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:22:43,876 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-24 23:22:43,876 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-10-24 23:22:43,876 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:22:43,876 INFO L85 PathProgramCache]: Analyzing trace with hash 8032759, now seen corresponding path program 1 times [2024-10-24 23:22:43,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:22:43,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728901444] [2024-10-24 23:22:43,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:22:43,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:22:43,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:22:43,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:22:43,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:22:43,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728901444] [2024-10-24 23:22:43,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728901444] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:22:43,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:22:43,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-24 23:22:43,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948313022] [2024-10-24 23:22:43,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:22:43,915 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 23:22:43,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:22:43,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 23:22:43,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 23:22:43,919 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 44 [2024-10-24 23:22:43,920 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 48 transitions, 153 flow. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:22:43,920 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:22:43,920 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 44 [2024-10-24 23:22:43,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:22:44,103 INFO L124 PetriNetUnfolderBase]: 1133/2318 cut-off events. [2024-10-24 23:22:44,103 INFO L125 PetriNetUnfolderBase]: For 616/766 co-relation queries the response was YES. [2024-10-24 23:22:44,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5144 conditions, 2318 events. 1133/2318 cut-off events. For 616/766 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 16948 event pairs, 365 based on Foata normal form. 90/1999 useless extension candidates. Maximal degree in co-relation 5122. Up to 993 conditions per place. [2024-10-24 23:22:44,117 INFO L140 encePairwiseOnDemand]: 41/44 looper letters, 44 selfloop transitions, 2 changer transitions 0/66 dead transitions. [2024-10-24 23:22:44,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 66 transitions, 308 flow [2024-10-24 23:22:44,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 23:22:44,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 23:22:44,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 102 transitions. [2024-10-24 23:22:44,118 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7727272727272727 [2024-10-24 23:22:44,118 INFO L175 Difference]: Start difference. First operand has 55 places, 48 transitions, 153 flow. Second operand 3 states and 102 transitions. [2024-10-24 23:22:44,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 66 transitions, 308 flow [2024-10-24 23:22:44,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 66 transitions, 305 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 23:22:44,122 INFO L231 Difference]: Finished difference. Result has 57 places, 48 transitions, 159 flow [2024-10-24 23:22:44,122 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=159, PETRI_PLACES=57, PETRI_TRANSITIONS=48} [2024-10-24 23:22:44,124 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 11 predicate places. [2024-10-24 23:22:44,124 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 48 transitions, 159 flow [2024-10-24 23:22:44,124 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:22:44,124 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:22:44,124 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:22:44,125 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-24 23:22:44,126 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-10-24 23:22:44,126 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:22:44,126 INFO L85 PathProgramCache]: Analyzing trace with hash 266605758, now seen corresponding path program 1 times [2024-10-24 23:22:44,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:22:44,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046227665] [2024-10-24 23:22:44,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:22:44,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:22:44,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:22:44,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:22:44,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:22:44,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046227665] [2024-10-24 23:22:44,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046227665] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:22:44,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:22:44,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 23:22:44,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162230158] [2024-10-24 23:22:44,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:22:44,185 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:22:44,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:22:44,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:22:44,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 23:22:44,192 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2024-10-24 23:22:44,193 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 48 transitions, 159 flow. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:22:44,193 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:22:44,193 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2024-10-24 23:22:44,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:22:44,452 INFO L124 PetriNetUnfolderBase]: 2065/3713 cut-off events. [2024-10-24 23:22:44,453 INFO L125 PetriNetUnfolderBase]: For 1351/1759 co-relation queries the response was YES. [2024-10-24 23:22:44,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8812 conditions, 3713 events. 2065/3713 cut-off events. For 1351/1759 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 26402 event pairs, 457 based on Foata normal form. 253/3375 useless extension candidates. Maximal degree in co-relation 8788. Up to 2001 conditions per place. [2024-10-24 23:22:44,474 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 60 selfloop transitions, 3 changer transitions 0/81 dead transitions. [2024-10-24 23:22:44,474 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 81 transitions, 399 flow [2024-10-24 23:22:44,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 23:22:44,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 23:22:44,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 131 transitions. [2024-10-24 23:22:44,476 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7443181818181818 [2024-10-24 23:22:44,476 INFO L175 Difference]: Start difference. First operand has 57 places, 48 transitions, 159 flow. Second operand 4 states and 131 transitions. [2024-10-24 23:22:44,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 81 transitions, 399 flow [2024-10-24 23:22:44,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 81 transitions, 391 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-24 23:22:44,527 INFO L231 Difference]: Finished difference. Result has 60 places, 50 transitions, 179 flow [2024-10-24 23:22:44,527 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=179, PETRI_PLACES=60, PETRI_TRANSITIONS=50} [2024-10-24 23:22:44,529 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 14 predicate places. [2024-10-24 23:22:44,529 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 50 transitions, 179 flow [2024-10-24 23:22:44,530 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:22:44,530 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:22:44,530 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:22:44,530 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-24 23:22:44,530 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-10-24 23:22:44,531 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:22:44,533 INFO L85 PathProgramCache]: Analyzing trace with hash 249015829, now seen corresponding path program 1 times [2024-10-24 23:22:44,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:22:44,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900003208] [2024-10-24 23:22:44,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:22:44,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:22:44,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:22:44,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:22:44,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:22:44,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900003208] [2024-10-24 23:22:44,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900003208] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:22:44,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:22:44,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 23:22:44,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333419772] [2024-10-24 23:22:44,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:22:44,580 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:22:44,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:22:44,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:22:44,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 23:22:44,589 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2024-10-24 23:22:44,589 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 50 transitions, 179 flow. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 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) [2024-10-24 23:22:44,589 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:22:44,589 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2024-10-24 23:22:44,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:22:44,847 INFO L124 PetriNetUnfolderBase]: 1601/3219 cut-off events. [2024-10-24 23:22:44,847 INFO L125 PetriNetUnfolderBase]: For 1181/1655 co-relation queries the response was YES. [2024-10-24 23:22:44,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7731 conditions, 3219 events. 1601/3219 cut-off events. For 1181/1655 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 24206 event pairs, 227 based on Foata normal form. 335/2961 useless extension candidates. Maximal degree in co-relation 7705. Up to 1673 conditions per place. [2024-10-24 23:22:44,863 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 62 selfloop transitions, 3 changer transitions 0/85 dead transitions. [2024-10-24 23:22:44,863 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 85 transitions, 445 flow [2024-10-24 23:22:44,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 23:22:44,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 23:22:44,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 133 transitions. [2024-10-24 23:22:44,864 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7556818181818182 [2024-10-24 23:22:44,864 INFO L175 Difference]: Start difference. First operand has 60 places, 50 transitions, 179 flow. Second operand 4 states and 133 transitions. [2024-10-24 23:22:44,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 85 transitions, 445 flow [2024-10-24 23:22:44,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 85 transitions, 441 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 23:22:44,866 INFO L231 Difference]: Finished difference. Result has 64 places, 51 transitions, 197 flow [2024-10-24 23:22:44,867 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=197, PETRI_PLACES=64, PETRI_TRANSITIONS=51} [2024-10-24 23:22:44,868 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 18 predicate places. [2024-10-24 23:22:44,868 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 51 transitions, 197 flow [2024-10-24 23:22:44,868 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 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) [2024-10-24 23:22:44,869 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:22:44,869 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:22:44,869 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-24 23:22:44,869 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-10-24 23:22:44,869 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:22:44,870 INFO L85 PathProgramCache]: Analyzing trace with hash 444542449, now seen corresponding path program 1 times [2024-10-24 23:22:44,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:22:44,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476441310] [2024-10-24 23:22:44,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:22:44,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:22:44,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:22:44,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:22:44,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:22:44,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476441310] [2024-10-24 23:22:44,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476441310] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:22:44,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:22:44,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 23:22:44,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928997662] [2024-10-24 23:22:44,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:22:44,948 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 23:22:44,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:22:44,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 23:22:44,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-24 23:22:44,954 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2024-10-24 23:22:44,954 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 51 transitions, 197 flow. Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:22:44,955 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:22:44,955 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2024-10-24 23:22:44,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:22:45,132 INFO L124 PetriNetUnfolderBase]: 1121/2195 cut-off events. [2024-10-24 23:22:45,132 INFO L125 PetriNetUnfolderBase]: For 1435/1757 co-relation queries the response was YES. [2024-10-24 23:22:45,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6017 conditions, 2195 events. 1121/2195 cut-off events. For 1435/1757 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 14756 event pairs, 160 based on Foata normal form. 35/1912 useless extension candidates. Maximal degree in co-relation 5986. Up to 835 conditions per place. [2024-10-24 23:22:45,142 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 65 selfloop transitions, 6 changer transitions 0/91 dead transitions. [2024-10-24 23:22:45,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 91 transitions, 499 flow [2024-10-24 23:22:45,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 23:22:45,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 23:22:45,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 161 transitions. [2024-10-24 23:22:45,143 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7318181818181818 [2024-10-24 23:22:45,143 INFO L175 Difference]: Start difference. First operand has 64 places, 51 transitions, 197 flow. Second operand 5 states and 161 transitions. [2024-10-24 23:22:45,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 91 transitions, 499 flow [2024-10-24 23:22:45,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 91 transitions, 489 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-24 23:22:45,146 INFO L231 Difference]: Finished difference. Result has 67 places, 52 transitions, 217 flow [2024-10-24 23:22:45,146 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=193, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=217, PETRI_PLACES=67, PETRI_TRANSITIONS=52} [2024-10-24 23:22:45,146 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 21 predicate places. [2024-10-24 23:22:45,146 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 52 transitions, 217 flow [2024-10-24 23:22:45,147 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:22:45,147 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:22:45,147 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:22:45,147 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-24 23:22:45,147 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-10-24 23:22:45,148 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:22:45,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1079587370, now seen corresponding path program 1 times [2024-10-24 23:22:45,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:22:45,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057561121] [2024-10-24 23:22:45,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:22:45,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:22:45,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:22:45,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:22:45,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:22:45,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057561121] [2024-10-24 23:22:45,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057561121] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:22:45,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:22:45,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 23:22:45,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125325029] [2024-10-24 23:22:45,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:22:45,194 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 23:22:45,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:22:45,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 23:22:45,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-24 23:22:45,198 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2024-10-24 23:22:45,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 52 transitions, 217 flow. Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:22:45,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:22:45,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2024-10-24 23:22:45,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:22:45,346 INFO L124 PetriNetUnfolderBase]: 1167/2324 cut-off events. [2024-10-24 23:22:45,347 INFO L125 PetriNetUnfolderBase]: For 1787/2048 co-relation queries the response was YES. [2024-10-24 23:22:45,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6629 conditions, 2324 events. 1167/2324 cut-off events. For 1787/2048 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 16002 event pairs, 223 based on Foata normal form. 72/2239 useless extension candidates. Maximal degree in co-relation 6596. Up to 1105 conditions per place. [2024-10-24 23:22:45,356 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 65 selfloop transitions, 7 changer transitions 0/92 dead transitions. [2024-10-24 23:22:45,357 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 92 transitions, 520 flow [2024-10-24 23:22:45,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 23:22:45,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 23:22:45,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 162 transitions. [2024-10-24 23:22:45,357 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7363636363636363 [2024-10-24 23:22:45,358 INFO L175 Difference]: Start difference. First operand has 67 places, 52 transitions, 217 flow. Second operand 5 states and 162 transitions. [2024-10-24 23:22:45,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 92 transitions, 520 flow [2024-10-24 23:22:45,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 92 transitions, 509 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-24 23:22:45,360 INFO L231 Difference]: Finished difference. Result has 69 places, 54 transitions, 242 flow [2024-10-24 23:22:45,361 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=242, PETRI_PLACES=69, PETRI_TRANSITIONS=54} [2024-10-24 23:22:45,361 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 23 predicate places. [2024-10-24 23:22:45,361 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 54 transitions, 242 flow [2024-10-24 23:22:45,361 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:22:45,361 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:22:45,362 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:22:45,362 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-24 23:22:45,362 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-10-24 23:22:45,362 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:22:45,362 INFO L85 PathProgramCache]: Analyzing trace with hash 1079601649, now seen corresponding path program 1 times [2024-10-24 23:22:45,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:22:45,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397490808] [2024-10-24 23:22:45,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:22:45,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:22:45,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:22:45,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:22:45,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:22:45,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397490808] [2024-10-24 23:22:45,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397490808] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:22:45,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:22:45,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 23:22:45,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218437962] [2024-10-24 23:22:45,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:22:45,401 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 23:22:45,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:22:45,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 23:22:45,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-24 23:22:45,407 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2024-10-24 23:22:45,408 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 54 transitions, 242 flow. Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:22:45,408 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:22:45,408 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2024-10-24 23:22:45,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:22:45,563 INFO L124 PetriNetUnfolderBase]: 1041/2086 cut-off events. [2024-10-24 23:22:45,564 INFO L125 PetriNetUnfolderBase]: For 2141/2375 co-relation queries the response was YES. [2024-10-24 23:22:45,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6218 conditions, 2086 events. 1041/2086 cut-off events. For 2141/2375 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 14082 event pairs, 265 based on Foata normal form. 70/2020 useless extension candidates. Maximal degree in co-relation 6184. Up to 1215 conditions per place. [2024-10-24 23:22:45,571 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 53 selfloop transitions, 5 changer transitions 0/78 dead transitions. [2024-10-24 23:22:45,571 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 78 transitions, 454 flow [2024-10-24 23:22:45,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 23:22:45,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 23:22:45,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 148 transitions. [2024-10-24 23:22:45,572 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6727272727272727 [2024-10-24 23:22:45,573 INFO L175 Difference]: Start difference. First operand has 69 places, 54 transitions, 242 flow. Second operand 5 states and 148 transitions. [2024-10-24 23:22:45,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 78 transitions, 454 flow [2024-10-24 23:22:45,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 78 transitions, 439 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-10-24 23:22:45,576 INFO L231 Difference]: Finished difference. Result has 71 places, 54 transitions, 243 flow [2024-10-24 23:22:45,576 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=243, PETRI_PLACES=71, PETRI_TRANSITIONS=54} [2024-10-24 23:22:45,576 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 25 predicate places. [2024-10-24 23:22:45,576 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 54 transitions, 243 flow [2024-10-24 23:22:45,577 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:22:45,577 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:22:45,577 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:22:45,577 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-24 23:22:45,577 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-10-24 23:22:45,577 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:22:45,577 INFO L85 PathProgramCache]: Analyzing trace with hash 1079601650, now seen corresponding path program 1 times [2024-10-24 23:22:45,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:22:45,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396933466] [2024-10-24 23:22:45,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:22:45,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:22:45,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:22:45,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:22:45,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:22:45,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396933466] [2024-10-24 23:22:45,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396933466] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:22:45,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:22:45,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 23:22:45,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746390409] [2024-10-24 23:22:45,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:22:45,615 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 23:22:45,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:22:45,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 23:22:45,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-10-24 23:22:45,620 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2024-10-24 23:22:45,620 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 54 transitions, 243 flow. Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:22:45,620 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:22:45,621 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2024-10-24 23:22:45,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:22:45,773 INFO L124 PetriNetUnfolderBase]: 1083/2163 cut-off events. [2024-10-24 23:22:45,774 INFO L125 PetriNetUnfolderBase]: For 2515/2758 co-relation queries the response was YES. [2024-10-24 23:22:45,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6507 conditions, 2163 events. 1083/2163 cut-off events. For 2515/2758 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 14609 event pairs, 258 based on Foata normal form. 70/2146 useless extension candidates. Maximal degree in co-relation 6472. Up to 1229 conditions per place. [2024-10-24 23:22:45,782 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 62 selfloop transitions, 7 changer transitions 0/89 dead transitions. [2024-10-24 23:22:45,782 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 89 transitions, 524 flow [2024-10-24 23:22:45,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 23:22:45,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 23:22:45,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 158 transitions. [2024-10-24 23:22:45,784 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7181818181818181 [2024-10-24 23:22:45,784 INFO L175 Difference]: Start difference. First operand has 71 places, 54 transitions, 243 flow. Second operand 5 states and 158 transitions. [2024-10-24 23:22:45,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 89 transitions, 524 flow [2024-10-24 23:22:45,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 89 transitions, 510 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-24 23:22:45,787 INFO L231 Difference]: Finished difference. Result has 72 places, 56 transitions, 265 flow [2024-10-24 23:22:45,788 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=231, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=265, PETRI_PLACES=72, PETRI_TRANSITIONS=56} [2024-10-24 23:22:45,789 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 26 predicate places. [2024-10-24 23:22:45,789 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 56 transitions, 265 flow [2024-10-24 23:22:45,789 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:22:45,790 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:22:45,790 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:22:45,790 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-24 23:22:45,790 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-10-24 23:22:45,790 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:22:45,790 INFO L85 PathProgramCache]: Analyzing trace with hash 1022324864, now seen corresponding path program 1 times [2024-10-24 23:22:45,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:22:45,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449662143] [2024-10-24 23:22:45,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:22:45,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:22:45,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:22:45,831 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:22:45,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:22:45,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449662143] [2024-10-24 23:22:45,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449662143] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:22:45,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1394224642] [2024-10-24 23:22:45,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:22:45,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:22:45,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:22:45,833 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:22:45,835 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-24 23:22:45,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:22:45,886 INFO L255 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-24 23:22:45,889 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:22:45,955 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:22:45,955 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 23:22:45,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1394224642] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:22:45,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 23:22:45,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 4 [2024-10-24 23:22:45,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920060655] [2024-10-24 23:22:45,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:22:45,956 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:22:45,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:22:45,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:22:45,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-24 23:22:45,962 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 44 [2024-10-24 23:22:45,963 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 56 transitions, 265 flow. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:22:45,963 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:22:45,963 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 44 [2024-10-24 23:22:45,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:22:46,106 INFO L124 PetriNetUnfolderBase]: 1083/2422 cut-off events. [2024-10-24 23:22:46,106 INFO L125 PetriNetUnfolderBase]: For 3742/4021 co-relation queries the response was YES. [2024-10-24 23:22:46,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7013 conditions, 2422 events. 1083/2422 cut-off events. For 3742/4021 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 18068 event pairs, 187 based on Foata normal form. 172/2509 useless extension candidates. Maximal degree in co-relation 6980. Up to 1216 conditions per place. [2024-10-24 23:22:46,117 INFO L140 encePairwiseOnDemand]: 41/44 looper letters, 54 selfloop transitions, 2 changer transitions 0/77 dead transitions. [2024-10-24 23:22:46,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 77 transitions, 509 flow [2024-10-24 23:22:46,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 23:22:46,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 23:22:46,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 120 transitions. [2024-10-24 23:22:46,118 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6818181818181818 [2024-10-24 23:22:46,118 INFO L175 Difference]: Start difference. First operand has 72 places, 56 transitions, 265 flow. Second operand 4 states and 120 transitions. [2024-10-24 23:22:46,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 77 transitions, 509 flow [2024-10-24 23:22:46,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 77 transitions, 489 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-10-24 23:22:46,122 INFO L231 Difference]: Finished difference. Result has 72 places, 55 transitions, 254 flow [2024-10-24 23:22:46,122 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=254, PETRI_PLACES=72, PETRI_TRANSITIONS=55} [2024-10-24 23:22:46,122 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 26 predicate places. [2024-10-24 23:22:46,123 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 55 transitions, 254 flow [2024-10-24 23:22:46,123 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:22:46,123 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:22:46,123 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:22:46,135 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-24 23:22:46,323 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-10-24 23:22:46,324 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-10-24 23:22:46,324 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:22:46,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1387157528, now seen corresponding path program 1 times [2024-10-24 23:22:46,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:22:46,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395143249] [2024-10-24 23:22:46,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:22:46,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:22:46,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:22:46,360 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:22:46,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:22:46,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395143249] [2024-10-24 23:22:46,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395143249] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:22:46,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1030111566] [2024-10-24 23:22:46,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:22:46,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:22:46,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:22:46,362 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:22:46,367 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-24 23:22:46,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:22:46,407 INFO L255 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-24 23:22:46,408 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:22:46,428 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:22:46,428 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 23:22:46,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1030111566] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:22:46,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 23:22:46,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-10-24 23:22:46,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818854934] [2024-10-24 23:22:46,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:22:46,428 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 23:22:46,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:22:46,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 23:22:46,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-24 23:22:46,438 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2024-10-24 23:22:46,438 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 55 transitions, 254 flow. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:22:46,438 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:22:46,438 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2024-10-24 23:22:46,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:22:46,661 INFO L124 PetriNetUnfolderBase]: 1453/2628 cut-off events. [2024-10-24 23:22:46,661 INFO L125 PetriNetUnfolderBase]: For 4353/4704 co-relation queries the response was YES. [2024-10-24 23:22:46,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8380 conditions, 2628 events. 1453/2628 cut-off events. For 4353/4704 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 17226 event pairs, 311 based on Foata normal form. 134/2659 useless extension candidates. Maximal degree in co-relation 8347. Up to 1048 conditions per place. [2024-10-24 23:22:46,673 INFO L140 encePairwiseOnDemand]: 40/44 looper letters, 84 selfloop transitions, 5 changer transitions 0/106 dead transitions. [2024-10-24 23:22:46,673 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 106 transitions, 678 flow [2024-10-24 23:22:46,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 23:22:46,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-24 23:22:46,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 182 transitions. [2024-10-24 23:22:46,674 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6893939393939394 [2024-10-24 23:22:46,674 INFO L175 Difference]: Start difference. First operand has 72 places, 55 transitions, 254 flow. Second operand 6 states and 182 transitions. [2024-10-24 23:22:46,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 106 transitions, 678 flow [2024-10-24 23:22:46,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 106 transitions, 672 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-24 23:22:46,678 INFO L231 Difference]: Finished difference. Result has 74 places, 54 transitions, 257 flow [2024-10-24 23:22:46,678 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=257, PETRI_PLACES=74, PETRI_TRANSITIONS=54} [2024-10-24 23:22:46,679 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 28 predicate places. [2024-10-24 23:22:46,679 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 54 transitions, 257 flow [2024-10-24 23:22:46,679 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:22:46,679 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:22:46,679 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:22:46,694 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-24 23:22:46,880 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,SelfDestructingSolverStorable11 [2024-10-24 23:22:46,880 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-10-24 23:22:46,880 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:22:46,880 INFO L85 PathProgramCache]: Analyzing trace with hash 1627299989, now seen corresponding path program 1 times [2024-10-24 23:22:46,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:22:46,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157509187] [2024-10-24 23:22:46,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:22:46,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:22:46,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:22:46,917 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:22:46,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:22:46,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157509187] [2024-10-24 23:22:46,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157509187] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:22:46,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2086415554] [2024-10-24 23:22:46,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:22:46,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:22:46,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:22:46,919 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:22:46,923 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-24 23:22:46,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:22:46,966 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-24 23:22:46,966 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:22:47,013 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:22:47,013 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:22:47,045 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:22:47,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2086415554] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:22:47,045 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:22:47,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2024-10-24 23:22:47,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848366775] [2024-10-24 23:22:47,045 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:22:47,045 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 23:22:47,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:22:47,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 23:22:47,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2024-10-24 23:22:47,053 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2024-10-24 23:22:47,054 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 54 transitions, 257 flow. Second operand has 8 states, 8 states have (on average 23.375) internal successors, (187), 8 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:22:47,054 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:22:47,054 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2024-10-24 23:22:47,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:22:47,542 INFO L124 PetriNetUnfolderBase]: 2907/6208 cut-off events. [2024-10-24 23:22:47,542 INFO L125 PetriNetUnfolderBase]: For 10495/11093 co-relation queries the response was YES. [2024-10-24 23:22:47,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17999 conditions, 6208 events. 2907/6208 cut-off events. For 10495/11093 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 50628 event pairs, 187 based on Foata normal form. 367/6490 useless extension candidates. Maximal degree in co-relation 17966. Up to 1217 conditions per place. [2024-10-24 23:22:47,579 INFO L140 encePairwiseOnDemand]: 41/44 looper letters, 129 selfloop transitions, 5 changer transitions 0/153 dead transitions. [2024-10-24 23:22:47,579 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 153 transitions, 1087 flow [2024-10-24 23:22:47,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 23:22:47,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-24 23:22:47,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 207 transitions. [2024-10-24 23:22:47,584 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7840909090909091 [2024-10-24 23:22:47,584 INFO L175 Difference]: Start difference. First operand has 74 places, 54 transitions, 257 flow. Second operand 6 states and 207 transitions. [2024-10-24 23:22:47,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 153 transitions, 1087 flow [2024-10-24 23:22:47,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 153 transitions, 1078 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-24 23:22:47,590 INFO L231 Difference]: Finished difference. Result has 79 places, 57 transitions, 288 flow [2024-10-24 23:22:47,590 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=288, PETRI_PLACES=79, PETRI_TRANSITIONS=57} [2024-10-24 23:22:47,590 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 33 predicate places. [2024-10-24 23:22:47,590 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 57 transitions, 288 flow [2024-10-24 23:22:47,591 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 23.375) internal successors, (187), 8 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:22:47,591 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:22:47,591 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:22:47,603 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-24 23:22:47,794 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:22:47,795 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-10-24 23:22:47,795 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:22:47,795 INFO L85 PathProgramCache]: Analyzing trace with hash -52210084, now seen corresponding path program 1 times [2024-10-24 23:22:47,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:22:47,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875691825] [2024-10-24 23:22:47,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:22:47,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:22:47,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:22:47,815 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 23:22:47,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:22:47,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875691825] [2024-10-24 23:22:47,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875691825] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:22:47,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:22:47,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 23:22:47,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236705879] [2024-10-24 23:22:47,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:22:47,816 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:22:47,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:22:47,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:22:47,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 23:22:47,821 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 44 [2024-10-24 23:22:47,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 57 transitions, 288 flow. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:22:47,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:22:47,822 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 44 [2024-10-24 23:22:47,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:22:48,417 INFO L124 PetriNetUnfolderBase]: 4097/7261 cut-off events. [2024-10-24 23:22:48,417 INFO L125 PetriNetUnfolderBase]: For 13419/14315 co-relation queries the response was YES. [2024-10-24 23:22:48,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23652 conditions, 7261 events. 4097/7261 cut-off events. For 13419/14315 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 52374 event pairs, 2101 based on Foata normal form. 306/7400 useless extension candidates. Maximal degree in co-relation 23616. Up to 3923 conditions per place. [2024-10-24 23:22:48,452 INFO L140 encePairwiseOnDemand]: 39/44 looper letters, 77 selfloop transitions, 6 changer transitions 0/99 dead transitions. [2024-10-24 23:22:48,452 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 99 transitions, 682 flow [2024-10-24 23:22:48,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 23:22:48,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 23:22:48,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 124 transitions. [2024-10-24 23:22:48,455 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7045454545454546 [2024-10-24 23:22:48,455 INFO L175 Difference]: Start difference. First operand has 79 places, 57 transitions, 288 flow. Second operand 4 states and 124 transitions. [2024-10-24 23:22:48,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 99 transitions, 682 flow [2024-10-24 23:22:48,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 99 transitions, 646 flow, removed 13 selfloop flow, removed 3 redundant places. [2024-10-24 23:22:48,465 INFO L231 Difference]: Finished difference. Result has 79 places, 57 transitions, 288 flow [2024-10-24 23:22:48,465 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=288, PETRI_PLACES=79, PETRI_TRANSITIONS=57} [2024-10-24 23:22:48,466 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 33 predicate places. [2024-10-24 23:22:48,466 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 57 transitions, 288 flow [2024-10-24 23:22:48,467 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:22:48,467 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:22:48,467 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:22:48,467 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-24 23:22:48,467 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-10-24 23:22:48,468 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:22:48,468 INFO L85 PathProgramCache]: Analyzing trace with hash -1228200713, now seen corresponding path program 1 times [2024-10-24 23:22:48,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:22:48,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917336122] [2024-10-24 23:22:48,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:22:48,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:22:48,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:22:48,521 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:22:48,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:22:48,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917336122] [2024-10-24 23:22:48,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917336122] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:22:48,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [325591876] [2024-10-24 23:22:48,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:22:48,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:22:48,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:22:48,525 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:22:48,527 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-24 23:22:48,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:22:48,576 INFO L255 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-24 23:22:48,577 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:22:48,606 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:22:48,606 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 23:22:48,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [325591876] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:22:48,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 23:22:48,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-10-24 23:22:48,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064699932] [2024-10-24 23:22:48,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:22:48,607 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 23:22:48,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:22:48,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 23:22:48,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-24 23:22:48,618 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2024-10-24 23:22:48,619 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 57 transitions, 288 flow. Second operand has 6 states, 6 states have (on average 21.0) internal successors, (126), 6 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) [2024-10-24 23:22:48,619 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:22:48,619 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2024-10-24 23:22:48,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:22:49,370 INFO L124 PetriNetUnfolderBase]: 3691/6641 cut-off events. [2024-10-24 23:22:49,371 INFO L125 PetriNetUnfolderBase]: For 13177/13600 co-relation queries the response was YES. [2024-10-24 23:22:49,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21306 conditions, 6641 events. 3691/6641 cut-off events. For 13177/13600 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 48736 event pairs, 815 based on Foata normal form. 162/6591 useless extension candidates. Maximal degree in co-relation 21270. Up to 2628 conditions per place. [2024-10-24 23:22:49,407 INFO L140 encePairwiseOnDemand]: 40/44 looper letters, 90 selfloop transitions, 5 changer transitions 0/111 dead transitions. [2024-10-24 23:22:49,408 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 111 transitions, 769 flow [2024-10-24 23:22:49,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 23:22:49,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-24 23:22:49,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 176 transitions. [2024-10-24 23:22:49,409 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-10-24 23:22:49,409 INFO L175 Difference]: Start difference. First operand has 79 places, 57 transitions, 288 flow. Second operand 6 states and 176 transitions. [2024-10-24 23:22:49,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 111 transitions, 769 flow [2024-10-24 23:22:49,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 111 transitions, 755 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-24 23:22:49,420 INFO L231 Difference]: Finished difference. Result has 81 places, 56 transitions, 286 flow [2024-10-24 23:22:49,421 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=286, PETRI_PLACES=81, PETRI_TRANSITIONS=56} [2024-10-24 23:22:49,421 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 35 predicate places. [2024-10-24 23:22:49,421 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 56 transitions, 286 flow [2024-10-24 23:22:49,421 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.0) internal successors, (126), 6 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) [2024-10-24 23:22:49,421 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:22:49,421 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:22:49,434 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-24 23:22:49,622 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-10-24 23:22:49,622 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-10-24 23:22:49,622 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:22:49,622 INFO L85 PathProgramCache]: Analyzing trace with hash -1093307593, now seen corresponding path program 1 times [2024-10-24 23:22:49,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:22:49,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343450588] [2024-10-24 23:22:49,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:22:49,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:22:49,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:22:49,674 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:22:49,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:22:49,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343450588] [2024-10-24 23:22:49,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343450588] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:22:49,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [149187220] [2024-10-24 23:22:49,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:22:49,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:22:49,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:22:49,677 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:22:49,679 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-24 23:22:49,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:22:49,724 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-24 23:22:49,725 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:22:49,753 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:22:49,753 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 23:22:49,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [149187220] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:22:49,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 23:22:49,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-10-24 23:22:49,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351858065] [2024-10-24 23:22:49,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:22:49,754 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 23:22:49,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:22:49,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 23:22:49,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-10-24 23:22:49,761 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2024-10-24 23:22:49,762 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 56 transitions, 286 flow. Second operand has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:22:49,762 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:22:49,762 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2024-10-24 23:22:49,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:22:50,361 INFO L124 PetriNetUnfolderBase]: 3819/6579 cut-off events. [2024-10-24 23:22:50,361 INFO L125 PetriNetUnfolderBase]: For 14016/14223 co-relation queries the response was YES. [2024-10-24 23:22:50,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22099 conditions, 6579 events. 3819/6579 cut-off events. For 14016/14223 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 45437 event pairs, 1663 based on Foata normal form. 228/6439 useless extension candidates. Maximal degree in co-relation 22062. Up to 3155 conditions per place. [2024-10-24 23:22:50,394 INFO L140 encePairwiseOnDemand]: 40/44 looper letters, 53 selfloop transitions, 8 changer transitions 0/77 dead transitions. [2024-10-24 23:22:50,395 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 77 transitions, 539 flow [2024-10-24 23:22:50,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 23:22:50,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 23:22:50,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 113 transitions. [2024-10-24 23:22:50,396 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6420454545454546 [2024-10-24 23:22:50,396 INFO L175 Difference]: Start difference. First operand has 81 places, 56 transitions, 286 flow. Second operand 4 states and 113 transitions. [2024-10-24 23:22:50,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 77 transitions, 539 flow [2024-10-24 23:22:50,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 77 transitions, 533 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-24 23:22:50,409 INFO L231 Difference]: Finished difference. Result has 80 places, 55 transitions, 293 flow [2024-10-24 23:22:50,410 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=277, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=293, PETRI_PLACES=80, PETRI_TRANSITIONS=55} [2024-10-24 23:22:50,410 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 34 predicate places. [2024-10-24 23:22:50,410 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 55 transitions, 293 flow [2024-10-24 23:22:50,410 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:22:50,410 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:22:50,410 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:22:50,425 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-24 23:22:50,611 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-10-24 23:22:50,611 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-10-24 23:22:50,611 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:22:50,611 INFO L85 PathProgramCache]: Analyzing trace with hash 381587199, now seen corresponding path program 1 times [2024-10-24 23:22:50,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:22:50,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367456313] [2024-10-24 23:22:50,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:22:50,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:22:50,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:22:50,666 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:22:50,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:22:50,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367456313] [2024-10-24 23:22:50,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367456313] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:22:50,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1110838897] [2024-10-24 23:22:50,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:22:50,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:22:50,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:22:50,669 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:22:50,672 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-24 23:22:50,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:22:50,718 INFO L255 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-24 23:22:50,720 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:22:50,779 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:22:50,779 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:22:50,830 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:22:50,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1110838897] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:22:50,830 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:22:50,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2024-10-24 23:22:50,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186930932] [2024-10-24 23:22:50,831 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:22:50,832 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-24 23:22:50,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:22:50,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-24 23:22:50,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2024-10-24 23:22:50,849 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2024-10-24 23:22:50,850 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 55 transitions, 293 flow. Second operand has 14 states, 14 states have (on average 22.642857142857142) internal successors, (317), 14 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:22:50,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:22:50,850 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2024-10-24 23:22:50,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:22:53,193 INFO L124 PetriNetUnfolderBase]: 11247/21497 cut-off events. [2024-10-24 23:22:53,193 INFO L125 PetriNetUnfolderBase]: For 54578/55667 co-relation queries the response was YES. [2024-10-24 23:22:53,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74606 conditions, 21497 events. 11247/21497 cut-off events. For 54578/55667 co-relation queries the response was YES. Maximal size of possible extension queue 722. Compared 191863 event pairs, 341 based on Foata normal form. 1442/22882 useless extension candidates. Maximal degree in co-relation 74567. Up to 4201 conditions per place. [2024-10-24 23:22:53,407 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 393 selfloop transitions, 71 changer transitions 0/480 dead transitions. [2024-10-24 23:22:53,407 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 480 transitions, 3763 flow [2024-10-24 23:22:53,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-10-24 23:22:53,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-10-24 23:22:53,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 905 transitions. [2024-10-24 23:22:53,411 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.734577922077922 [2024-10-24 23:22:53,411 INFO L175 Difference]: Start difference. First operand has 80 places, 55 transitions, 293 flow. Second operand 28 states and 905 transitions. [2024-10-24 23:22:53,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 480 transitions, 3763 flow [2024-10-24 23:22:53,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 480 transitions, 3411 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-24 23:22:53,462 INFO L231 Difference]: Finished difference. Result has 120 places, 127 transitions, 1145 flow [2024-10-24 23:22:53,462 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=277, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1145, PETRI_PLACES=120, PETRI_TRANSITIONS=127} [2024-10-24 23:22:53,462 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 74 predicate places. [2024-10-24 23:22:53,462 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 127 transitions, 1145 flow [2024-10-24 23:22:53,463 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 22.642857142857142) internal successors, (317), 14 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:22:53,463 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:22:53,463 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:22:53,475 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-24 23:22:53,663 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-10-24 23:22:53,664 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-10-24 23:22:53,664 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:22:53,664 INFO L85 PathProgramCache]: Analyzing trace with hash -1139380794, now seen corresponding path program 1 times [2024-10-24 23:22:53,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:22:53,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131458543] [2024-10-24 23:22:53,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:22:53,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:22:53,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:22:53,747 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:22:53,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:22:53,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131458543] [2024-10-24 23:22:53,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131458543] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:22:53,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1923469778] [2024-10-24 23:22:53,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:22:53,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:22:53,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:22:53,750 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:22:53,751 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-24 23:22:53,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:22:53,794 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-24 23:22:53,795 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:22:53,858 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:22:53,858 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:22:53,912 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:22:53,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1923469778] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:22:53,912 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:22:53,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2024-10-24 23:22:53,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895180896] [2024-10-24 23:22:53,912 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:22:53,912 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-24 23:22:53,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:22:53,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-24 23:22:53,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2024-10-24 23:22:53,934 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2024-10-24 23:22:53,935 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 127 transitions, 1145 flow. Second operand has 14 states, 14 states have (on average 22.642857142857142) internal successors, (317), 14 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:22:53,935 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:22:53,935 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2024-10-24 23:22:53,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:22:56,768 INFO L124 PetriNetUnfolderBase]: 10527/20471 cut-off events. [2024-10-24 23:22:56,769 INFO L125 PetriNetUnfolderBase]: For 212868/214080 co-relation queries the response was YES. [2024-10-24 23:22:56,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87501 conditions, 20471 events. 10527/20471 cut-off events. For 212868/214080 co-relation queries the response was YES. Maximal size of possible extension queue 695. Compared 184151 event pairs, 413 based on Foata normal form. 1962/22412 useless extension candidates. Maximal degree in co-relation 87444. Up to 5328 conditions per place. [2024-10-24 23:22:57,075 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 163 selfloop transitions, 46 changer transitions 0/225 dead transitions. [2024-10-24 23:22:57,078 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 225 transitions, 2318 flow [2024-10-24 23:22:57,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-24 23:22:57,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-24 23:22:57,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 353 transitions. [2024-10-24 23:22:57,079 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6685606060606061 [2024-10-24 23:22:57,079 INFO L175 Difference]: Start difference. First operand has 120 places, 127 transitions, 1145 flow. Second operand 12 states and 353 transitions. [2024-10-24 23:22:57,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 225 transitions, 2318 flow [2024-10-24 23:22:57,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 225 transitions, 1963 flow, removed 154 selfloop flow, removed 12 redundant places. [2024-10-24 23:22:57,499 INFO L231 Difference]: Finished difference. Result has 117 places, 110 transitions, 1005 flow [2024-10-24 23:22:57,499 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=549, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1005, PETRI_PLACES=117, PETRI_TRANSITIONS=110} [2024-10-24 23:22:57,500 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 71 predicate places. [2024-10-24 23:22:57,500 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 110 transitions, 1005 flow [2024-10-24 23:22:57,500 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 22.642857142857142) internal successors, (317), 14 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:22:57,500 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:22:57,500 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:22:57,513 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-24 23:22:57,700 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:22:57,701 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-10-24 23:22:57,701 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:22:57,701 INFO L85 PathProgramCache]: Analyzing trace with hash 580483896, now seen corresponding path program 1 times [2024-10-24 23:22:57,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:22:57,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732170338] [2024-10-24 23:22:57,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:22:57,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:22:57,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:22:57,741 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 23:22:57,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:22:57,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732170338] [2024-10-24 23:22:57,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732170338] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:22:57,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:22:57,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 23:22:57,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034773687] [2024-10-24 23:22:57,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:22:57,742 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:22:57,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:22:57,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:22:57,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 23:22:57,749 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 44 [2024-10-24 23:22:57,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 110 transitions, 1005 flow. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:22:57,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:22:57,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 44 [2024-10-24 23:22:57,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:23:00,906 INFO L124 PetriNetUnfolderBase]: 16719/28403 cut-off events. [2024-10-24 23:23:00,906 INFO L125 PetriNetUnfolderBase]: For 222920/224114 co-relation queries the response was YES. [2024-10-24 23:23:00,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116070 conditions, 28403 events. 16719/28403 cut-off events. For 222920/224114 co-relation queries the response was YES. Maximal size of possible extension queue 902. Compared 238679 event pairs, 5881 based on Foata normal form. 972/29009 useless extension candidates. Maximal degree in co-relation 116016. Up to 12541 conditions per place. [2024-10-24 23:23:01,115 INFO L140 encePairwiseOnDemand]: 39/44 looper letters, 166 selfloop transitions, 6 changer transitions 0/186 dead transitions. [2024-10-24 23:23:01,115 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 186 transitions, 2029 flow [2024-10-24 23:23:01,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 23:23:01,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 23:23:01,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 116 transitions. [2024-10-24 23:23:01,116 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6590909090909091 [2024-10-24 23:23:01,117 INFO L175 Difference]: Start difference. First operand has 117 places, 110 transitions, 1005 flow. Second operand 4 states and 116 transitions. [2024-10-24 23:23:01,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 186 transitions, 2029 flow [2024-10-24 23:23:01,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 186 transitions, 1787 flow, removed 109 selfloop flow, removed 7 redundant places. [2024-10-24 23:23:01,734 INFO L231 Difference]: Finished difference. Result has 113 places, 110 transitions, 851 flow [2024-10-24 23:23:01,734 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=831, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=851, PETRI_PLACES=113, PETRI_TRANSITIONS=110} [2024-10-24 23:23:01,734 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 67 predicate places. [2024-10-24 23:23:01,734 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 110 transitions, 851 flow [2024-10-24 23:23:01,734 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:23:01,735 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:23:01,735 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:23:01,735 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-24 23:23:01,735 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-10-24 23:23:01,735 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:23:01,735 INFO L85 PathProgramCache]: Analyzing trace with hash 467203270, now seen corresponding path program 1 times [2024-10-24 23:23:01,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:23:01,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413776620] [2024-10-24 23:23:01,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:23:01,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:23:01,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:23:01,781 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 23:23:01,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:23:01,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413776620] [2024-10-24 23:23:01,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413776620] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:23:01,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:23:01,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 23:23:01,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045661543] [2024-10-24 23:23:01,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:23:01,782 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:23:01,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:23:01,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:23:01,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 23:23:01,787 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2024-10-24 23:23:01,787 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 110 transitions, 851 flow. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 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) [2024-10-24 23:23:01,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:23:01,788 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2024-10-24 23:23:01,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:23:04,003 INFO L124 PetriNetUnfolderBase]: 13442/23808 cut-off events. [2024-10-24 23:23:04,003 INFO L125 PetriNetUnfolderBase]: For 207598/207598 co-relation queries the response was YES. [2024-10-24 23:23:04,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95005 conditions, 23808 events. 13442/23808 cut-off events. For 207598/207598 co-relation queries the response was YES. Maximal size of possible extension queue 748. Compared 201368 event pairs, 2818 based on Foata normal form. 0/23649 useless extension candidates. Maximal degree in co-relation 94954. Up to 10429 conditions per place. [2024-10-24 23:23:04,155 INFO L140 encePairwiseOnDemand]: 39/44 looper letters, 239 selfloop transitions, 9 changer transitions 0/264 dead transitions. [2024-10-24 23:23:04,155 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 264 transitions, 2747 flow [2024-10-24 23:23:04,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 23:23:04,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 23:23:04,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 119 transitions. [2024-10-24 23:23:04,156 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6761363636363636 [2024-10-24 23:23:04,156 INFO L175 Difference]: Start difference. First operand has 113 places, 110 transitions, 851 flow. Second operand 4 states and 119 transitions. [2024-10-24 23:23:04,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 264 transitions, 2747 flow [2024-10-24 23:23:04,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 264 transitions, 2675 flow, removed 30 selfloop flow, removed 2 redundant places. [2024-10-24 23:23:04,406 INFO L231 Difference]: Finished difference. Result has 114 places, 110 transitions, 845 flow [2024-10-24 23:23:04,407 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=819, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=845, PETRI_PLACES=114, PETRI_TRANSITIONS=110} [2024-10-24 23:23:04,407 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 68 predicate places. [2024-10-24 23:23:04,407 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 110 transitions, 845 flow [2024-10-24 23:23:04,407 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 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) [2024-10-24 23:23:04,407 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:23:04,407 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:23:04,408 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-10-24 23:23:04,408 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-10-24 23:23:04,408 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:23:04,408 INFO L85 PathProgramCache]: Analyzing trace with hash 749651250, now seen corresponding path program 1 times [2024-10-24 23:23:04,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:23:04,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154129361] [2024-10-24 23:23:04,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:23:04,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:23:04,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:23:04,457 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:23:04,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:23:04,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154129361] [2024-10-24 23:23:04,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154129361] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:23:04,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1639847343] [2024-10-24 23:23:04,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:23:04,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:23:04,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:23:04,460 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:23:04,461 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-24 23:23:04,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:23:04,502 INFO L255 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-24 23:23:04,502 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:23:04,596 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:23:04,597 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:23:04,672 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:23:04,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1639847343] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:23:04,672 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:23:04,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2024-10-24 23:23:04,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137421105] [2024-10-24 23:23:04,672 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:23:04,672 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-24 23:23:04,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:23:04,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-24 23:23:04,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272 [2024-10-24 23:23:04,698 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2024-10-24 23:23:04,699 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 110 transitions, 845 flow. Second operand has 17 states, 17 states have (on average 22.529411764705884) internal successors, (383), 17 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:23:04,699 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:23:04,699 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2024-10-24 23:23:04,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:23:07,981 INFO L124 PetriNetUnfolderBase]: 14167/27349 cut-off events. [2024-10-24 23:23:07,981 INFO L125 PetriNetUnfolderBase]: For 174170/174170 co-relation queries the response was YES. [2024-10-24 23:23:08,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107269 conditions, 27349 events. 14167/27349 cut-off events. For 174170/174170 co-relation queries the response was YES. Maximal size of possible extension queue 875. Compared 253429 event pairs, 503 based on Foata normal form. 1216/28508 useless extension candidates. Maximal degree in co-relation 107214. Up to 8281 conditions per place. [2024-10-24 23:23:08,442 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 312 selfloop transitions, 56 changer transitions 0/384 dead transitions. [2024-10-24 23:23:08,442 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 384 transitions, 3259 flow [2024-10-24 23:23:08,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-10-24 23:23:08,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-10-24 23:23:08,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 652 transitions. [2024-10-24 23:23:08,444 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7056277056277056 [2024-10-24 23:23:08,444 INFO L175 Difference]: Start difference. First operand has 114 places, 110 transitions, 845 flow. Second operand 21 states and 652 transitions. [2024-10-24 23:23:08,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 384 transitions, 3259 flow [2024-10-24 23:23:08,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 384 transitions, 3041 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-24 23:23:08,888 INFO L231 Difference]: Finished difference. Result has 137 places, 126 transitions, 1177 flow [2024-10-24 23:23:08,888 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=771, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1177, PETRI_PLACES=137, PETRI_TRANSITIONS=126} [2024-10-24 23:23:08,889 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 91 predicate places. [2024-10-24 23:23:08,889 INFO L471 AbstractCegarLoop]: Abstraction has has 137 places, 126 transitions, 1177 flow [2024-10-24 23:23:08,889 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 22.529411764705884) internal successors, (383), 17 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:23:08,889 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:23:08,889 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:23:08,901 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-24 23:23:09,090 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-10-24 23:23:09,090 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-10-24 23:23:09,091 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:23:09,091 INFO L85 PathProgramCache]: Analyzing trace with hash -179984683, now seen corresponding path program 1 times [2024-10-24 23:23:09,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:23:09,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079591425] [2024-10-24 23:23:09,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:23:09,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:23:09,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:23:09,161 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:23:09,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:23:09,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079591425] [2024-10-24 23:23:09,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079591425] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:23:09,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [221701336] [2024-10-24 23:23:09,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:23:09,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:23:09,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:23:09,163 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:23:09,166 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-24 23:23:09,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:23:09,211 INFO L255 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-24 23:23:09,211 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:23:09,331 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:23:09,331 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:23:09,426 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:23:09,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [221701336] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:23:09,427 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:23:09,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 19 [2024-10-24 23:23:09,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943624866] [2024-10-24 23:23:09,427 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:23:09,427 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-10-24 23:23:09,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:23:09,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-10-24 23:23:09,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=265, Unknown=0, NotChecked=0, Total=380 [2024-10-24 23:23:09,464 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2024-10-24 23:23:09,465 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 126 transitions, 1177 flow. Second operand has 20 states, 20 states have (on average 22.45) internal successors, (449), 20 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:23:09,465 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:23:09,465 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2024-10-24 23:23:09,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:23:16,451 INFO L124 PetriNetUnfolderBase]: 27307/52855 cut-off events. [2024-10-24 23:23:16,451 INFO L125 PetriNetUnfolderBase]: For 613306/613306 co-relation queries the response was YES. [2024-10-24 23:23:16,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 208907 conditions, 52855 events. 27307/52855 cut-off events. For 613306/613306 co-relation queries the response was YES. Maximal size of possible extension queue 1558. Compared 528859 event pairs, 1331 based on Foata normal form. 3420/56182 useless extension candidates. Maximal degree in co-relation 208844. Up to 7651 conditions per place. [2024-10-24 23:23:16,928 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 529 selfloop transitions, 124 changer transitions 0/669 dead transitions. [2024-10-24 23:23:16,928 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 669 transitions, 5712 flow [2024-10-24 23:23:16,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-10-24 23:23:16,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2024-10-24 23:23:16,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1159 transitions. [2024-10-24 23:23:16,931 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.711916461916462 [2024-10-24 23:23:16,931 INFO L175 Difference]: Start difference. First operand has 137 places, 126 transitions, 1177 flow. Second operand 37 states and 1159 transitions. [2024-10-24 23:23:16,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 669 transitions, 5712 flow [2024-10-24 23:23:18,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 669 transitions, 5598 flow, removed 37 selfloop flow, removed 12 redundant places. [2024-10-24 23:23:18,109 INFO L231 Difference]: Finished difference. Result has 175 places, 188 transitions, 2231 flow [2024-10-24 23:23:18,109 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1053, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=2231, PETRI_PLACES=175, PETRI_TRANSITIONS=188} [2024-10-24 23:23:18,109 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 129 predicate places. [2024-10-24 23:23:18,109 INFO L471 AbstractCegarLoop]: Abstraction has has 175 places, 188 transitions, 2231 flow [2024-10-24 23:23:18,109 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 22.45) internal successors, (449), 20 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:23:18,110 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:23:18,110 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:23:18,121 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-24 23:23:18,310 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:23:18,310 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-10-24 23:23:18,311 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:23:18,311 INFO L85 PathProgramCache]: Analyzing trace with hash 1623322012, now seen corresponding path program 1 times [2024-10-24 23:23:18,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:23:18,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080946616] [2024-10-24 23:23:18,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:23:18,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:23:18,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:23:18,391 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:23:18,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:23:18,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080946616] [2024-10-24 23:23:18,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080946616] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:23:18,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [450908818] [2024-10-24 23:23:18,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:23:18,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:23:18,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:23:18,393 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:23:18,397 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-24 23:23:18,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:23:18,440 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-24 23:23:18,440 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:23:18,549 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:23:18,550 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:23:18,661 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:23:18,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [450908818] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:23:18,661 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:23:18,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 22 [2024-10-24 23:23:18,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435911280] [2024-10-24 23:23:18,662 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:23:18,662 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-10-24 23:23:18,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:23:18,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-10-24 23:23:18,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=357, Unknown=0, NotChecked=0, Total=506 [2024-10-24 23:23:18,709 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2024-10-24 23:23:18,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 188 transitions, 2231 flow. Second operand has 23 states, 23 states have (on average 22.391304347826086) internal successors, (515), 23 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:23:18,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:23:18,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2024-10-24 23:23:18,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand