./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/pthread/fib_safe-6.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread/fib_safe-6.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 ca933e9c322081d61da01652cda9ceed61707699c680fd4ef3d92d3ccd39b362 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-23 01:38:45,405 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 01:38:45,465 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-23 01:38:45,468 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 01:38:45,469 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 01:38:45,492 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 01:38:45,492 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 01:38:45,493 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 01:38:45,493 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 01:38:45,494 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 01:38:45,494 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 01:38:45,494 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 01:38:45,495 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 01:38:45,496 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 01:38:45,497 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 01:38:45,497 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 01:38:45,497 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 01:38:45,498 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-23 01:38:45,498 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 01:38:45,498 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-23 01:38:45,501 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 01:38:45,501 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 01:38:45,501 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 01:38:45,502 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 01:38:45,502 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-23 01:38:45,502 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-23 01:38:45,502 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-23 01:38:45,502 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-23 01:38:45,503 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 01:38:45,503 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 01:38:45,503 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 01:38:45,503 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 01:38:45,503 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 01:38:45,503 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 01:38:45,504 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 01:38:45,504 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 01:38:45,504 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 01:38:45,504 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 01:38:45,504 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 01:38:45,504 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 01:38:45,505 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 01:38:45,506 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 01:38:45,506 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 01:38:45,506 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 01:38:45,506 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ca933e9c322081d61da01652cda9ceed61707699c680fd4ef3d92d3ccd39b362 [2024-11-23 01:38:45,736 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 01:38:45,767 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 01:38:45,769 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 01:38:45,770 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 01:38:45,770 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 01:38:45,771 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/fib_safe-6.i [2024-11-23 01:38:47,088 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-23 01:38:47,293 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 01:38:47,293 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/fib_safe-6.i [2024-11-23 01:38:47,307 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db0158b99/3dee18ca8b6d406fa8afc2a6cb62ee10/FLAG4311b5598 [2024-11-23 01:38:47,319 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db0158b99/3dee18ca8b6d406fa8afc2a6cb62ee10 [2024-11-23 01:38:47,323 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 01:38:47,324 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 01:38:47,327 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 01:38:47,328 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 01:38:47,332 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 01:38:47,333 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:38:47" (1/1) ... [2024-11-23 01:38:47,334 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10e0f6d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:38:47, skipping insertion in model container [2024-11-23 01:38:47,334 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:38:47" (1/1) ... [2024-11-23 01:38:47,386 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 01:38:47,696 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 01:38:47,703 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 01:38:47,758 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 01:38:47,782 INFO L204 MainTranslator]: Completed translation [2024-11-23 01:38:47,783 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:38:47 WrapperNode [2024-11-23 01:38:47,783 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 01:38:47,784 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 01:38:47,784 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 01:38:47,784 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 01:38:47,789 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:38:47" (1/1) ... [2024-11-23 01:38:47,798 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:38:47" (1/1) ... [2024-11-23 01:38:47,811 INFO L138 Inliner]: procedures = 164, calls = 21, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 72 [2024-11-23 01:38:47,812 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 01:38:47,812 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 01:38:47,812 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 01:38:47,812 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 01:38:47,819 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:38:47" (1/1) ... [2024-11-23 01:38:47,819 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:38:47" (1/1) ... [2024-11-23 01:38:47,821 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:38:47" (1/1) ... [2024-11-23 01:38:47,829 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]. [2024-11-23 01:38:47,829 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:38:47" (1/1) ... [2024-11-23 01:38:47,830 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:38:47" (1/1) ... [2024-11-23 01:38:47,832 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:38:47" (1/1) ... [2024-11-23 01:38:47,834 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:38:47" (1/1) ... [2024-11-23 01:38:47,835 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:38:47" (1/1) ... [2024-11-23 01:38:47,836 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:38:47" (1/1) ... [2024-11-23 01:38:47,837 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 01:38:47,838 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 01:38:47,838 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 01:38:47,838 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 01:38:47,839 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:38:47" (1/1) ... [2024-11-23 01:38:47,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 01:38:47,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:38:47,868 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-23 01:38:47,870 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-23 01:38:47,901 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-11-23 01:38:47,901 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-11-23 01:38:47,901 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-11-23 01:38:47,902 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-11-23 01:38:47,902 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-23 01:38:47,902 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 01:38:47,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-23 01:38:47,902 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-23 01:38:47,902 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 01:38:47,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 01:38:47,903 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-23 01:38:47,985 INFO L238 CfgBuilder]: Building ICFG [2024-11-23 01:38:47,987 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 01:38:48,128 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-23 01:38:48,128 INFO L287 CfgBuilder]: Performing block encoding [2024-11-23 01:38:48,241 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 01:38:48,242 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-23 01:38:48,243 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:38:48 BoogieIcfgContainer [2024-11-23 01:38:48,243 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 01:38:48,245 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 01:38:48,245 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 01:38:48,248 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 01:38:48,248 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:38:47" (1/3) ... [2024-11-23 01:38:48,249 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47d0a94a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:38:48, skipping insertion in model container [2024-11-23 01:38:48,249 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:38:47" (2/3) ... [2024-11-23 01:38:48,249 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47d0a94a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:38:48, skipping insertion in model container [2024-11-23 01:38:48,250 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:38:48" (3/3) ... [2024-11-23 01:38:48,251 INFO L112 eAbstractionObserver]: Analyzing ICFG fib_safe-6.i [2024-11-23 01:38:48,263 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 01:38:48,264 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2024-11-23 01:38:48,264 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-23 01:38:48,304 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-23 01:38:48,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 48 places, 44 transitions, 96 flow [2024-11-23 01:38:48,347 INFO L124 PetriNetUnfolderBase]: 3/42 cut-off events. [2024-11-23 01:38:48,347 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-23 01:38:48,349 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. [2024-11-23 01:38:48,350 INFO L82 GeneralOperation]: Start removeDead. Operand has 48 places, 44 transitions, 96 flow [2024-11-23 01:38:48,352 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 46 places, 42 transitions, 90 flow [2024-11-23 01:38:48,357 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 01:38:48,363 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;@1f76b38b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 01:38:48,363 INFO L334 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2024-11-23 01:38:48,366 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-23 01:38:48,366 INFO L124 PetriNetUnfolderBase]: 0/12 cut-off events. [2024-11-23 01:38:48,367 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-23 01:38:48,367 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:38:48,367 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:38:48,367 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-23 01:38:48,371 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:38:48,371 INFO L85 PathProgramCache]: Analyzing trace with hash -1464023297, now seen corresponding path program 1 times [2024-11-23 01:38:48,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:38:48,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279970310] [2024-11-23 01:38:48,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:38:48,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:38:48,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:38:48,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:38:48,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:38:48,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279970310] [2024-11-23 01:38:48,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279970310] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:38:48,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:38:48,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 01:38:48,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925625896] [2024-11-23 01:38:48,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:38:48,716 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 01:38:48,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:38:48,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 01:38:48,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-23 01:38:48,770 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2024-11-23 01:38:48,771 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) [2024-11-23 01:38:48,772 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:38:48,772 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2024-11-23 01:38:48,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:38:49,011 INFO L124 PetriNetUnfolderBase]: 657/1293 cut-off events. [2024-11-23 01:38:49,012 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-23 01:38:49,016 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. [2024-11-23 01:38:49,023 INFO L140 encePairwiseOnDemand]: 36/44 looper letters, 46 selfloop transitions, 5 changer transitions 0/69 dead transitions. [2024-11-23 01:38:49,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 69 transitions, 249 flow [2024-11-23 01:38:49,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 01:38:49,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 01:38:49,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 135 transitions. [2024-11-23 01:38:49,033 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7670454545454546 [2024-11-23 01:38:49,034 INFO L175 Difference]: Start difference. First operand has 46 places, 42 transitions, 90 flow. Second operand 4 states and 135 transitions. [2024-11-23 01:38:49,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 69 transitions, 249 flow [2024-11-23 01:38:49,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 69 transitions, 246 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-23 01:38:49,039 INFO L231 Difference]: Finished difference. Result has 48 places, 45 transitions, 119 flow [2024-11-23 01:38:49,042 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} [2024-11-23 01:38:49,045 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 2 predicate places. [2024-11-23 01:38:49,046 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 45 transitions, 119 flow [2024-11-23 01:38:49,046 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) [2024-11-23 01:38:49,046 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:38:49,047 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:38:49,047 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-23 01:38:49,047 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)] === [2024-11-23 01:38:49,047 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:38:49,049 INFO L85 PathProgramCache]: Analyzing trace with hash 1801374430, now seen corresponding path program 1 times [2024-11-23 01:38:49,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:38:49,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420429104] [2024-11-23 01:38:49,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:38:49,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:38:49,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:38:49,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:38:49,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:38:49,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420429104] [2024-11-23 01:38:49,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420429104] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:38:49,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:38:49,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-23 01:38:49,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893899678] [2024-11-23 01:38:49,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:38:49,141 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 01:38:49,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:38:49,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 01:38:49,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 01:38:49,148 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 44 [2024-11-23 01:38:49,149 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) [2024-11-23 01:38:49,149 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:38:49,149 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 44 [2024-11-23 01:38:49,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:38:49,428 INFO L124 PetriNetUnfolderBase]: 1169/2451 cut-off events. [2024-11-23 01:38:49,428 INFO L125 PetriNetUnfolderBase]: For 333/333 co-relation queries the response was YES. [2024-11-23 01:38:49,430 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. [2024-11-23 01:38:49,439 INFO L140 encePairwiseOnDemand]: 41/44 looper letters, 42 selfloop transitions, 2 changer transitions 0/63 dead transitions. [2024-11-23 01:38:49,440 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 63 transitions, 263 flow [2024-11-23 01:38:49,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 01:38:49,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-23 01:38:49,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 102 transitions. [2024-11-23 01:38:49,442 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7727272727272727 [2024-11-23 01:38:49,442 INFO L175 Difference]: Start difference. First operand has 48 places, 45 transitions, 119 flow. Second operand 3 states and 102 transitions. [2024-11-23 01:38:49,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 63 transitions, 263 flow [2024-11-23 01:38:49,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 63 transitions, 263 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-23 01:38:49,446 INFO L231 Difference]: Finished difference. Result has 51 places, 46 transitions, 131 flow [2024-11-23 01:38:49,447 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} [2024-11-23 01:38:49,448 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 5 predicate places. [2024-11-23 01:38:49,448 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 46 transitions, 131 flow [2024-11-23 01:38:49,448 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) [2024-11-23 01:38:49,448 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:38:49,448 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:38:49,448 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-23 01:38:49,449 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-23 01:38:49,449 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:38:49,449 INFO L85 PathProgramCache]: Analyzing trace with hash 1822895874, now seen corresponding path program 1 times [2024-11-23 01:38:49,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:38:49,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777412921] [2024-11-23 01:38:49,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:38:49,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:38:49,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:38:49,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:38:49,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:38:49,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777412921] [2024-11-23 01:38:49,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777412921] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:38:49,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:38:49,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 01:38:49,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346755] [2024-11-23 01:38:49,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:38:49,522 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 01:38:49,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:38:49,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 01:38:49,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 01:38:49,536 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2024-11-23 01:38:49,537 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) [2024-11-23 01:38:49,537 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:38:49,537 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2024-11-23 01:38:49,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:38:49,748 INFO L124 PetriNetUnfolderBase]: 1401/2500 cut-off events. [2024-11-23 01:38:49,748 INFO L125 PetriNetUnfolderBase]: For 470/520 co-relation queries the response was YES. [2024-11-23 01:38:49,750 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. [2024-11-23 01:38:49,758 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 58 selfloop transitions, 3 changer transitions 0/78 dead transitions. [2024-11-23 01:38:49,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 78 transitions, 347 flow [2024-11-23 01:38:49,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 01:38:49,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 01:38:49,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 135 transitions. [2024-11-23 01:38:49,760 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7670454545454546 [2024-11-23 01:38:49,760 INFO L175 Difference]: Start difference. First operand has 51 places, 46 transitions, 131 flow. Second operand 4 states and 135 transitions. [2024-11-23 01:38:49,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 78 transitions, 347 flow [2024-11-23 01:38:49,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 78 transitions, 343 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-23 01:38:49,766 INFO L231 Difference]: Finished difference. Result has 55 places, 48 transitions, 153 flow [2024-11-23 01:38:49,767 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} [2024-11-23 01:38:49,767 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 9 predicate places. [2024-11-23 01:38:49,768 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 48 transitions, 153 flow [2024-11-23 01:38:49,768 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) [2024-11-23 01:38:49,768 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:38:49,769 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:38:49,769 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-23 01:38:49,769 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)] === [2024-11-23 01:38:49,769 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:38:49,769 INFO L85 PathProgramCache]: Analyzing trace with hash 8032759, now seen corresponding path program 1 times [2024-11-23 01:38:49,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:38:49,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736138418] [2024-11-23 01:38:49,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:38:49,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:38:49,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:38:49,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:38:49,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:38:49,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736138418] [2024-11-23 01:38:49,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736138418] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:38:49,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:38:49,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-23 01:38:49,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270931346] [2024-11-23 01:38:49,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:38:49,820 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 01:38:49,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:38:49,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 01:38:49,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 01:38:49,828 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 44 [2024-11-23 01:38:49,829 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) [2024-11-23 01:38:49,829 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:38:49,829 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 44 [2024-11-23 01:38:49,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:38:50,000 INFO L124 PetriNetUnfolderBase]: 1133/2318 cut-off events. [2024-11-23 01:38:50,001 INFO L125 PetriNetUnfolderBase]: For 616/766 co-relation queries the response was YES. [2024-11-23 01:38:50,004 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. [2024-11-23 01:38:50,013 INFO L140 encePairwiseOnDemand]: 41/44 looper letters, 44 selfloop transitions, 2 changer transitions 0/66 dead transitions. [2024-11-23 01:38:50,013 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 66 transitions, 308 flow [2024-11-23 01:38:50,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 01:38:50,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-23 01:38:50,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 102 transitions. [2024-11-23 01:38:50,014 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7727272727272727 [2024-11-23 01:38:50,015 INFO L175 Difference]: Start difference. First operand has 55 places, 48 transitions, 153 flow. Second operand 3 states and 102 transitions. [2024-11-23 01:38:50,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 66 transitions, 308 flow [2024-11-23 01:38:50,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 66 transitions, 305 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-23 01:38:50,017 INFO L231 Difference]: Finished difference. Result has 57 places, 48 transitions, 159 flow [2024-11-23 01:38:50,017 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} [2024-11-23 01:38:50,018 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 11 predicate places. [2024-11-23 01:38:50,018 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 48 transitions, 159 flow [2024-11-23 01:38:50,018 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) [2024-11-23 01:38:50,018 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:38:50,018 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:38:50,018 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-23 01:38:50,019 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-23 01:38:50,019 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:38:50,019 INFO L85 PathProgramCache]: Analyzing trace with hash 266605758, now seen corresponding path program 1 times [2024-11-23 01:38:50,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:38:50,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704906581] [2024-11-23 01:38:50,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:38:50,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:38:50,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:38:50,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:38:50,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:38:50,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704906581] [2024-11-23 01:38:50,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704906581] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:38:50,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:38:50,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 01:38:50,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241579744] [2024-11-23 01:38:50,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:38:50,054 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 01:38:50,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:38:50,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 01:38:50,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 01:38:50,060 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2024-11-23 01:38:50,061 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) [2024-11-23 01:38:50,061 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:38:50,061 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2024-11-23 01:38:50,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:38:50,353 INFO L124 PetriNetUnfolderBase]: 2065/3713 cut-off events. [2024-11-23 01:38:50,354 INFO L125 PetriNetUnfolderBase]: For 1351/1759 co-relation queries the response was YES. [2024-11-23 01:38:50,359 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. [2024-11-23 01:38:50,372 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 60 selfloop transitions, 3 changer transitions 0/81 dead transitions. [2024-11-23 01:38:50,372 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 81 transitions, 399 flow [2024-11-23 01:38:50,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 01:38:50,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 01:38:50,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 131 transitions. [2024-11-23 01:38:50,375 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7443181818181818 [2024-11-23 01:38:50,375 INFO L175 Difference]: Start difference. First operand has 57 places, 48 transitions, 159 flow. Second operand 4 states and 131 transitions. [2024-11-23 01:38:50,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 81 transitions, 399 flow [2024-11-23 01:38:50,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 81 transitions, 391 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-23 01:38:50,377 INFO L231 Difference]: Finished difference. Result has 60 places, 50 transitions, 179 flow [2024-11-23 01:38:50,378 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} [2024-11-23 01:38:50,378 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 14 predicate places. [2024-11-23 01:38:50,379 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 50 transitions, 179 flow [2024-11-23 01:38:50,379 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) [2024-11-23 01:38:50,380 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:38:50,380 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:38:50,380 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-23 01:38:50,381 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)] === [2024-11-23 01:38:50,381 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:38:50,381 INFO L85 PathProgramCache]: Analyzing trace with hash 249015829, now seen corresponding path program 1 times [2024-11-23 01:38:50,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:38:50,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035960068] [2024-11-23 01:38:50,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:38:50,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:38:50,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:38:50,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:38:50,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:38:50,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035960068] [2024-11-23 01:38:50,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035960068] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:38:50,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:38:50,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 01:38:50,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756943977] [2024-11-23 01:38:50,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:38:50,420 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 01:38:50,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:38:50,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 01:38:50,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 01:38:50,428 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2024-11-23 01:38:50,428 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) [2024-11-23 01:38:50,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:38:50,428 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2024-11-23 01:38:50,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:38:50,721 INFO L124 PetriNetUnfolderBase]: 1601/3219 cut-off events. [2024-11-23 01:38:50,721 INFO L125 PetriNetUnfolderBase]: For 1181/1655 co-relation queries the response was YES. [2024-11-23 01:38:50,729 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. [2024-11-23 01:38:50,742 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 62 selfloop transitions, 3 changer transitions 0/85 dead transitions. [2024-11-23 01:38:50,743 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 85 transitions, 445 flow [2024-11-23 01:38:50,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 01:38:50,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 01:38:50,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 133 transitions. [2024-11-23 01:38:50,744 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7556818181818182 [2024-11-23 01:38:50,744 INFO L175 Difference]: Start difference. First operand has 60 places, 50 transitions, 179 flow. Second operand 4 states and 133 transitions. [2024-11-23 01:38:50,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 85 transitions, 445 flow [2024-11-23 01:38:50,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 85 transitions, 441 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-23 01:38:50,747 INFO L231 Difference]: Finished difference. Result has 64 places, 51 transitions, 197 flow [2024-11-23 01:38:50,747 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} [2024-11-23 01:38:50,748 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 18 predicate places. [2024-11-23 01:38:50,748 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 51 transitions, 197 flow [2024-11-23 01:38:50,748 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) [2024-11-23 01:38:50,748 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:38:50,749 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:38:50,749 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-23 01:38:50,749 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-23 01:38:50,749 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:38:50,749 INFO L85 PathProgramCache]: Analyzing trace with hash 444542449, now seen corresponding path program 1 times [2024-11-23 01:38:50,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:38:50,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993688759] [2024-11-23 01:38:50,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:38:50,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:38:50,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:38:50,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:38:50,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:38:50,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993688759] [2024-11-23 01:38:50,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993688759] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:38:50,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:38:50,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 01:38:50,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182990988] [2024-11-23 01:38:50,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:38:50,827 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 01:38:50,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:38:50,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 01:38:50,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-23 01:38:50,832 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2024-11-23 01:38:50,833 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) [2024-11-23 01:38:50,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:38:50,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2024-11-23 01:38:50,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:38:50,989 INFO L124 PetriNetUnfolderBase]: 1121/2195 cut-off events. [2024-11-23 01:38:50,989 INFO L125 PetriNetUnfolderBase]: For 1435/1757 co-relation queries the response was YES. [2024-11-23 01:38:50,993 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. [2024-11-23 01:38:50,999 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 65 selfloop transitions, 6 changer transitions 0/91 dead transitions. [2024-11-23 01:38:50,999 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 91 transitions, 499 flow [2024-11-23 01:38:51,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 01:38:51,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-23 01:38:51,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 161 transitions. [2024-11-23 01:38:51,000 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7318181818181818 [2024-11-23 01:38:51,000 INFO L175 Difference]: Start difference. First operand has 64 places, 51 transitions, 197 flow. Second operand 5 states and 161 transitions. [2024-11-23 01:38:51,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 91 transitions, 499 flow [2024-11-23 01:38:51,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 91 transitions, 489 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-23 01:38:51,003 INFO L231 Difference]: Finished difference. Result has 67 places, 52 transitions, 217 flow [2024-11-23 01:38:51,003 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} [2024-11-23 01:38:51,004 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 21 predicate places. [2024-11-23 01:38:51,004 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 52 transitions, 217 flow [2024-11-23 01:38:51,004 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) [2024-11-23 01:38:51,004 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:38:51,004 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:38:51,004 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-23 01:38:51,005 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-23 01:38:51,005 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:38:51,005 INFO L85 PathProgramCache]: Analyzing trace with hash 1079587370, now seen corresponding path program 1 times [2024-11-23 01:38:51,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:38:51,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825287694] [2024-11-23 01:38:51,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:38:51,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:38:51,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:38:51,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:38:51,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:38:51,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825287694] [2024-11-23 01:38:51,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825287694] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:38:51,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:38:51,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 01:38:51,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65031470] [2024-11-23 01:38:51,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:38:51,049 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 01:38:51,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:38:51,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 01:38:51,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-23 01:38:51,053 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2024-11-23 01:38:51,053 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) [2024-11-23 01:38:51,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:38:51,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2024-11-23 01:38:51,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:38:51,229 INFO L124 PetriNetUnfolderBase]: 1167/2324 cut-off events. [2024-11-23 01:38:51,230 INFO L125 PetriNetUnfolderBase]: For 1787/2048 co-relation queries the response was YES. [2024-11-23 01:38:51,233 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. [2024-11-23 01:38:51,239 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 65 selfloop transitions, 7 changer transitions 0/92 dead transitions. [2024-11-23 01:38:51,239 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 92 transitions, 520 flow [2024-11-23 01:38:51,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 01:38:51,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-23 01:38:51,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 162 transitions. [2024-11-23 01:38:51,240 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7363636363636363 [2024-11-23 01:38:51,240 INFO L175 Difference]: Start difference. First operand has 67 places, 52 transitions, 217 flow. Second operand 5 states and 162 transitions. [2024-11-23 01:38:51,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 92 transitions, 520 flow [2024-11-23 01:38:51,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 92 transitions, 509 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-23 01:38:51,243 INFO L231 Difference]: Finished difference. Result has 69 places, 54 transitions, 242 flow [2024-11-23 01:38:51,243 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} [2024-11-23 01:38:51,243 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 23 predicate places. [2024-11-23 01:38:51,244 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 54 transitions, 242 flow [2024-11-23 01:38:51,244 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) [2024-11-23 01:38:51,244 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:38:51,244 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:38:51,244 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-23 01:38:51,244 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-23 01:38:51,245 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:38:51,245 INFO L85 PathProgramCache]: Analyzing trace with hash 1079601649, now seen corresponding path program 1 times [2024-11-23 01:38:51,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:38:51,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534989623] [2024-11-23 01:38:51,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:38:51,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:38:51,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:38:51,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:38:51,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:38:51,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534989623] [2024-11-23 01:38:51,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534989623] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:38:51,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:38:51,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 01:38:51,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40981010] [2024-11-23 01:38:51,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:38:51,295 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 01:38:51,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:38:51,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 01:38:51,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-23 01:38:51,301 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2024-11-23 01:38:51,301 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) [2024-11-23 01:38:51,301 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:38:51,301 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2024-11-23 01:38:51,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:38:51,447 INFO L124 PetriNetUnfolderBase]: 1041/2086 cut-off events. [2024-11-23 01:38:51,447 INFO L125 PetriNetUnfolderBase]: For 2141/2375 co-relation queries the response was YES. [2024-11-23 01:38:51,451 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. [2024-11-23 01:38:51,457 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 53 selfloop transitions, 5 changer transitions 0/78 dead transitions. [2024-11-23 01:38:51,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 78 transitions, 454 flow [2024-11-23 01:38:51,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 01:38:51,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-23 01:38:51,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 148 transitions. [2024-11-23 01:38:51,458 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6727272727272727 [2024-11-23 01:38:51,458 INFO L175 Difference]: Start difference. First operand has 69 places, 54 transitions, 242 flow. Second operand 5 states and 148 transitions. [2024-11-23 01:38:51,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 78 transitions, 454 flow [2024-11-23 01:38:51,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 78 transitions, 439 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-11-23 01:38:51,461 INFO L231 Difference]: Finished difference. Result has 71 places, 54 transitions, 243 flow [2024-11-23 01:38:51,461 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} [2024-11-23 01:38:51,462 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 25 predicate places. [2024-11-23 01:38:51,462 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 54 transitions, 243 flow [2024-11-23 01:38:51,462 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) [2024-11-23 01:38:51,462 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:38:51,462 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:38:51,462 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-23 01:38:51,463 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-23 01:38:51,463 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:38:51,463 INFO L85 PathProgramCache]: Analyzing trace with hash 1079601650, now seen corresponding path program 1 times [2024-11-23 01:38:51,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:38:51,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525793892] [2024-11-23 01:38:51,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:38:51,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:38:51,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:38:51,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:38:51,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:38:51,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525793892] [2024-11-23 01:38:51,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525793892] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:38:51,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:38:51,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 01:38:51,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384937270] [2024-11-23 01:38:51,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:38:51,507 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 01:38:51,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:38:51,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 01:38:51,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-23 01:38:51,512 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2024-11-23 01:38:51,513 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) [2024-11-23 01:38:51,513 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:38:51,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2024-11-23 01:38:51,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:38:51,713 INFO L124 PetriNetUnfolderBase]: 1083/2163 cut-off events. [2024-11-23 01:38:51,714 INFO L125 PetriNetUnfolderBase]: For 2515/2758 co-relation queries the response was YES. [2024-11-23 01:38:51,719 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. [2024-11-23 01:38:51,727 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 62 selfloop transitions, 7 changer transitions 0/89 dead transitions. [2024-11-23 01:38:51,727 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 89 transitions, 524 flow [2024-11-23 01:38:51,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 01:38:51,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-23 01:38:51,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 158 transitions. [2024-11-23 01:38:51,728 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7181818181818181 [2024-11-23 01:38:51,728 INFO L175 Difference]: Start difference. First operand has 71 places, 54 transitions, 243 flow. Second operand 5 states and 158 transitions. [2024-11-23 01:38:51,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 89 transitions, 524 flow [2024-11-23 01:38:51,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 89 transitions, 510 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-23 01:38:51,732 INFO L231 Difference]: Finished difference. Result has 72 places, 56 transitions, 265 flow [2024-11-23 01:38:51,732 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} [2024-11-23 01:38:51,732 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 26 predicate places. [2024-11-23 01:38:51,732 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 56 transitions, 265 flow [2024-11-23 01:38:51,733 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) [2024-11-23 01:38:51,733 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:38:51,733 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:38:51,733 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-23 01:38:51,733 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)] === [2024-11-23 01:38:51,734 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:38:51,734 INFO L85 PathProgramCache]: Analyzing trace with hash 1022324864, now seen corresponding path program 1 times [2024-11-23 01:38:51,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:38:51,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316701370] [2024-11-23 01:38:51,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:38:51,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:38:51,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:38:51,776 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:38:51,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:38:51,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316701370] [2024-11-23 01:38:51,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316701370] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:38:51,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1355660905] [2024-11-23 01:38:51,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:38:51,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:38:51,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:38:51,779 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 01:38:51,780 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-23 01:38:51,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:38:51,824 INFO L255 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-23 01:38:51,827 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:38:51,901 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:38:51,901 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 01:38:51,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1355660905] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:38:51,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 01:38:51,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 4 [2024-11-23 01:38:51,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172737589] [2024-11-23 01:38:51,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:38:51,902 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 01:38:51,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:38:51,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 01:38:51,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-23 01:38:51,908 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 44 [2024-11-23 01:38:51,908 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) [2024-11-23 01:38:51,908 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:38:51,909 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 44 [2024-11-23 01:38:51,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:38:52,053 INFO L124 PetriNetUnfolderBase]: 1083/2422 cut-off events. [2024-11-23 01:38:52,053 INFO L125 PetriNetUnfolderBase]: For 3742/4021 co-relation queries the response was YES. [2024-11-23 01:38:52,058 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. [2024-11-23 01:38:52,065 INFO L140 encePairwiseOnDemand]: 41/44 looper letters, 54 selfloop transitions, 2 changer transitions 0/77 dead transitions. [2024-11-23 01:38:52,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 77 transitions, 509 flow [2024-11-23 01:38:52,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 01:38:52,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 01:38:52,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 120 transitions. [2024-11-23 01:38:52,066 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6818181818181818 [2024-11-23 01:38:52,066 INFO L175 Difference]: Start difference. First operand has 72 places, 56 transitions, 265 flow. Second operand 4 states and 120 transitions. [2024-11-23 01:38:52,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 77 transitions, 509 flow [2024-11-23 01:38:52,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 77 transitions, 489 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-11-23 01:38:52,069 INFO L231 Difference]: Finished difference. Result has 72 places, 55 transitions, 254 flow [2024-11-23 01:38:52,069 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} [2024-11-23 01:38:52,070 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 26 predicate places. [2024-11-23 01:38:52,070 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 55 transitions, 254 flow [2024-11-23 01:38:52,070 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) [2024-11-23 01:38:52,070 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:38:52,070 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:38:52,081 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-23 01:38:52,274 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 [2024-11-23 01:38:52,275 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-23 01:38:52,276 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:38:52,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1387157528, now seen corresponding path program 1 times [2024-11-23 01:38:52,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:38:52,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741085483] [2024-11-23 01:38:52,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:38:52,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:38:52,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:38:52,320 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:38:52,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:38:52,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741085483] [2024-11-23 01:38:52,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741085483] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:38:52,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [751216544] [2024-11-23 01:38:52,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:38:52,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:38:52,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:38:52,323 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 01:38:52,330 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-23 01:38:52,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:38:52,369 INFO L255 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-23 01:38:52,370 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:38:52,402 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:38:52,402 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 01:38:52,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [751216544] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:38:52,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 01:38:52,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-23 01:38:52,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531937046] [2024-11-23 01:38:52,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:38:52,403 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 01:38:52,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:38:52,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 01:38:52,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-23 01:38:52,412 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2024-11-23 01:38:52,412 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) [2024-11-23 01:38:52,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:38:52,412 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2024-11-23 01:38:52,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:38:52,624 INFO L124 PetriNetUnfolderBase]: 1453/2628 cut-off events. [2024-11-23 01:38:52,624 INFO L125 PetriNetUnfolderBase]: For 4353/4704 co-relation queries the response was YES. [2024-11-23 01:38:52,630 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. [2024-11-23 01:38:52,638 INFO L140 encePairwiseOnDemand]: 40/44 looper letters, 84 selfloop transitions, 5 changer transitions 0/106 dead transitions. [2024-11-23 01:38:52,638 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 106 transitions, 678 flow [2024-11-23 01:38:52,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 01:38:52,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-23 01:38:52,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 182 transitions. [2024-11-23 01:38:52,639 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6893939393939394 [2024-11-23 01:38:52,639 INFO L175 Difference]: Start difference. First operand has 72 places, 55 transitions, 254 flow. Second operand 6 states and 182 transitions. [2024-11-23 01:38:52,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 106 transitions, 678 flow [2024-11-23 01:38:52,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 106 transitions, 672 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-23 01:38:52,643 INFO L231 Difference]: Finished difference. Result has 74 places, 54 transitions, 257 flow [2024-11-23 01:38:52,643 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} [2024-11-23 01:38:52,644 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 28 predicate places. [2024-11-23 01:38:52,644 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 54 transitions, 257 flow [2024-11-23 01:38:52,644 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) [2024-11-23 01:38:52,644 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:38:52,644 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:38:52,654 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-23 01:38:52,848 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 [2024-11-23 01:38:52,849 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)] === [2024-11-23 01:38:52,849 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:38:52,849 INFO L85 PathProgramCache]: Analyzing trace with hash 1627299989, now seen corresponding path program 1 times [2024-11-23 01:38:52,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:38:52,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725644503] [2024-11-23 01:38:52,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:38:52,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:38:52,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:38:52,898 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:38:52,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:38:52,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725644503] [2024-11-23 01:38:52,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725644503] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:38:52,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1793173870] [2024-11-23 01:38:52,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:38:52,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:38:52,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:38:52,905 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 01:38:52,908 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-23 01:38:52,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:38:52,954 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-23 01:38:52,955 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:38:53,008 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:38:53,009 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 01:38:53,053 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:38:53,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1793173870] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 01:38:53,053 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 01:38:53,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2024-11-23 01:38:53,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626201857] [2024-11-23 01:38:53,053 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 01:38:53,053 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-23 01:38:53,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:38:53,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-23 01:38:53,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2024-11-23 01:38:53,067 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2024-11-23 01:38:53,067 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) [2024-11-23 01:38:53,067 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:38:53,067 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2024-11-23 01:38:53,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:38:53,470 INFO L124 PetriNetUnfolderBase]: 2907/6208 cut-off events. [2024-11-23 01:38:53,470 INFO L125 PetriNetUnfolderBase]: For 10495/11093 co-relation queries the response was YES. [2024-11-23 01:38:53,484 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. [2024-11-23 01:38:53,503 INFO L140 encePairwiseOnDemand]: 41/44 looper letters, 129 selfloop transitions, 5 changer transitions 0/153 dead transitions. [2024-11-23 01:38:53,504 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 153 transitions, 1087 flow [2024-11-23 01:38:53,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 01:38:53,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-23 01:38:53,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 207 transitions. [2024-11-23 01:38:53,505 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7840909090909091 [2024-11-23 01:38:53,505 INFO L175 Difference]: Start difference. First operand has 74 places, 54 transitions, 257 flow. Second operand 6 states and 207 transitions. [2024-11-23 01:38:53,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 153 transitions, 1087 flow [2024-11-23 01:38:53,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 153 transitions, 1078 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-23 01:38:53,510 INFO L231 Difference]: Finished difference. Result has 79 places, 57 transitions, 288 flow [2024-11-23 01:38:53,511 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} [2024-11-23 01:38:53,511 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 33 predicate places. [2024-11-23 01:38:53,511 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 57 transitions, 288 flow [2024-11-23 01:38:53,511 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) [2024-11-23 01:38:53,511 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:38:53,511 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:38:53,523 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-23 01:38:53,712 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 [2024-11-23 01:38:53,712 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-23 01:38:53,714 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:38:53,714 INFO L85 PathProgramCache]: Analyzing trace with hash -52210084, now seen corresponding path program 1 times [2024-11-23 01:38:53,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:38:53,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123498197] [2024-11-23 01:38:53,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:38:53,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:38:53,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:38:53,743 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-23 01:38:53,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:38:53,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123498197] [2024-11-23 01:38:53,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123498197] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:38:53,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:38:53,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 01:38:53,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414859749] [2024-11-23 01:38:53,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:38:53,744 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 01:38:53,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:38:53,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 01:38:53,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 01:38:53,753 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 44 [2024-11-23 01:38:53,753 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) [2024-11-23 01:38:53,753 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:38:53,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 44 [2024-11-23 01:38:53,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:38:54,394 INFO L124 PetriNetUnfolderBase]: 4097/7261 cut-off events. [2024-11-23 01:38:54,394 INFO L125 PetriNetUnfolderBase]: For 13419/14315 co-relation queries the response was YES. [2024-11-23 01:38:54,410 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. [2024-11-23 01:38:54,428 INFO L140 encePairwiseOnDemand]: 39/44 looper letters, 77 selfloop transitions, 6 changer transitions 0/99 dead transitions. [2024-11-23 01:38:54,429 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 99 transitions, 682 flow [2024-11-23 01:38:54,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 01:38:54,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 01:38:54,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 124 transitions. [2024-11-23 01:38:54,430 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7045454545454546 [2024-11-23 01:38:54,430 INFO L175 Difference]: Start difference. First operand has 79 places, 57 transitions, 288 flow. Second operand 4 states and 124 transitions. [2024-11-23 01:38:54,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 99 transitions, 682 flow [2024-11-23 01:38:54,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 99 transitions, 646 flow, removed 13 selfloop flow, removed 3 redundant places. [2024-11-23 01:38:54,439 INFO L231 Difference]: Finished difference. Result has 79 places, 57 transitions, 288 flow [2024-11-23 01:38:54,440 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} [2024-11-23 01:38:54,440 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 33 predicate places. [2024-11-23 01:38:54,440 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 57 transitions, 288 flow [2024-11-23 01:38:54,440 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) [2024-11-23 01:38:54,440 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:38:54,440 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:38:54,441 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-23 01:38:54,441 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-23 01:38:54,441 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:38:54,441 INFO L85 PathProgramCache]: Analyzing trace with hash -1228200713, now seen corresponding path program 1 times [2024-11-23 01:38:54,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:38:54,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11693856] [2024-11-23 01:38:54,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:38:54,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:38:54,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:38:54,484 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:38:54,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:38:54,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11693856] [2024-11-23 01:38:54,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11693856] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:38:54,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [435771874] [2024-11-23 01:38:54,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:38:54,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:38:54,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:38:54,490 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 01:38:54,491 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-23 01:38:54,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:38:54,540 INFO L255 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-23 01:38:54,540 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:38:54,565 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:38:54,565 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 01:38:54,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [435771874] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:38:54,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 01:38:54,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-23 01:38:54,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446327845] [2024-11-23 01:38:54,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:38:54,566 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 01:38:54,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:38:54,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 01:38:54,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-23 01:38:54,630 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2024-11-23 01:38:54,631 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) [2024-11-23 01:38:54,631 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:38:54,631 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2024-11-23 01:38:54,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:38:55,226 INFO L124 PetriNetUnfolderBase]: 3691/6641 cut-off events. [2024-11-23 01:38:55,227 INFO L125 PetriNetUnfolderBase]: For 13177/13600 co-relation queries the response was YES. [2024-11-23 01:38:55,240 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. [2024-11-23 01:38:55,257 INFO L140 encePairwiseOnDemand]: 40/44 looper letters, 90 selfloop transitions, 5 changer transitions 0/111 dead transitions. [2024-11-23 01:38:55,257 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 111 transitions, 769 flow [2024-11-23 01:38:55,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 01:38:55,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-23 01:38:55,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 176 transitions. [2024-11-23 01:38:55,259 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-23 01:38:55,259 INFO L175 Difference]: Start difference. First operand has 79 places, 57 transitions, 288 flow. Second operand 6 states and 176 transitions. [2024-11-23 01:38:55,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 111 transitions, 769 flow [2024-11-23 01:38:55,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 111 transitions, 755 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-23 01:38:55,269 INFO L231 Difference]: Finished difference. Result has 81 places, 56 transitions, 286 flow [2024-11-23 01:38:55,269 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} [2024-11-23 01:38:55,270 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 35 predicate places. [2024-11-23 01:38:55,270 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 56 transitions, 286 flow [2024-11-23 01:38:55,270 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) [2024-11-23 01:38:55,270 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:38:55,270 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:38:55,280 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-23 01:38:55,471 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 [2024-11-23 01:38:55,472 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)] === [2024-11-23 01:38:55,473 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:38:55,473 INFO L85 PathProgramCache]: Analyzing trace with hash -1093307593, now seen corresponding path program 1 times [2024-11-23 01:38:55,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:38:55,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140837844] [2024-11-23 01:38:55,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:38:55,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:38:55,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:38:55,528 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:38:55,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:38:55,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140837844] [2024-11-23 01:38:55,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140837844] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:38:55,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1769387524] [2024-11-23 01:38:55,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:38:55,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:38:55,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:38:55,536 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 01:38:55,542 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-23 01:38:55,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:38:55,588 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-23 01:38:55,589 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:38:55,617 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:38:55,617 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 01:38:55,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1769387524] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:38:55,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 01:38:55,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-11-23 01:38:55,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844115649] [2024-11-23 01:38:55,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:38:55,618 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 01:38:55,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:38:55,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 01:38:55,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-23 01:38:55,626 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2024-11-23 01:38:55,626 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) [2024-11-23 01:38:55,626 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:38:55,626 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2024-11-23 01:38:55,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:38:56,184 INFO L124 PetriNetUnfolderBase]: 3819/6579 cut-off events. [2024-11-23 01:38:56,185 INFO L125 PetriNetUnfolderBase]: For 14016/14223 co-relation queries the response was YES. [2024-11-23 01:38:56,200 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. [2024-11-23 01:38:56,225 INFO L140 encePairwiseOnDemand]: 40/44 looper letters, 53 selfloop transitions, 8 changer transitions 0/77 dead transitions. [2024-11-23 01:38:56,226 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 77 transitions, 539 flow [2024-11-23 01:38:56,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 01:38:56,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 01:38:56,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 113 transitions. [2024-11-23 01:38:56,227 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6420454545454546 [2024-11-23 01:38:56,227 INFO L175 Difference]: Start difference. First operand has 81 places, 56 transitions, 286 flow. Second operand 4 states and 113 transitions. [2024-11-23 01:38:56,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 77 transitions, 539 flow [2024-11-23 01:38:56,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 77 transitions, 533 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-23 01:38:56,242 INFO L231 Difference]: Finished difference. Result has 80 places, 55 transitions, 293 flow [2024-11-23 01:38:56,242 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} [2024-11-23 01:38:56,242 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 34 predicate places. [2024-11-23 01:38:56,242 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 55 transitions, 293 flow [2024-11-23 01:38:56,243 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) [2024-11-23 01:38:56,243 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:38:56,243 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:38:56,252 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-23 01:38:56,443 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 [2024-11-23 01:38:56,444 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-23 01:38:56,444 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:38:56,444 INFO L85 PathProgramCache]: Analyzing trace with hash 381587199, now seen corresponding path program 1 times [2024-11-23 01:38:56,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:38:56,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563359104] [2024-11-23 01:38:56,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:38:56,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:38:56,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:38:56,608 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:38:56,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:38:56,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563359104] [2024-11-23 01:38:56,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563359104] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:38:56,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [545046730] [2024-11-23 01:38:56,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:38:56,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:38:56,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:38:56,612 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 01:38:56,617 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-23 01:38:56,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:38:56,656 INFO L255 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-23 01:38:56,657 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:38:56,782 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:38:56,783 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 01:38:56,844 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:38:56,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [545046730] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 01:38:56,844 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 01:38:56,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2024-11-23 01:38:56,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2846806] [2024-11-23 01:38:56,844 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 01:38:56,845 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-23 01:38:56,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:38:56,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-23 01:38:56,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2024-11-23 01:38:56,866 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2024-11-23 01:38:56,867 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) [2024-11-23 01:38:56,867 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:38:56,867 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2024-11-23 01:38:56,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:38:59,305 INFO L124 PetriNetUnfolderBase]: 11247/21497 cut-off events. [2024-11-23 01:38:59,305 INFO L125 PetriNetUnfolderBase]: For 54578/55667 co-relation queries the response was YES. [2024-11-23 01:38:59,356 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. [2024-11-23 01:38:59,417 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 393 selfloop transitions, 71 changer transitions 0/480 dead transitions. [2024-11-23 01:38:59,417 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 480 transitions, 3763 flow [2024-11-23 01:38:59,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-23 01:38:59,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-11-23 01:38:59,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 905 transitions. [2024-11-23 01:38:59,419 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.734577922077922 [2024-11-23 01:38:59,419 INFO L175 Difference]: Start difference. First operand has 80 places, 55 transitions, 293 flow. Second operand 28 states and 905 transitions. [2024-11-23 01:38:59,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 480 transitions, 3763 flow [2024-11-23 01:38:59,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 480 transitions, 3411 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-23 01:38:59,471 INFO L231 Difference]: Finished difference. Result has 120 places, 127 transitions, 1145 flow [2024-11-23 01:38:59,471 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} [2024-11-23 01:38:59,472 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 74 predicate places. [2024-11-23 01:38:59,472 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 127 transitions, 1145 flow [2024-11-23 01:38:59,472 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) [2024-11-23 01:38:59,472 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:38:59,472 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:38:59,478 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-23 01:38:59,672 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 [2024-11-23 01:38:59,673 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-23 01:38:59,674 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:38:59,674 INFO L85 PathProgramCache]: Analyzing trace with hash -1139380794, now seen corresponding path program 1 times [2024-11-23 01:38:59,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:38:59,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766606223] [2024-11-23 01:38:59,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:38:59,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:38:59,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:38:59,714 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:38:59,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:38:59,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766606223] [2024-11-23 01:38:59,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766606223] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:38:59,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [174726593] [2024-11-23 01:38:59,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:38:59,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:38:59,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:38:59,716 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) [2024-11-23 01:38:59,721 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-23 01:38:59,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:38:59,766 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-23 01:38:59,766 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:38:59,825 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:38:59,826 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 01:38:59,873 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:38:59,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [174726593] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 01:38:59,873 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 01:38:59,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2024-11-23 01:38:59,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452761251] [2024-11-23 01:38:59,874 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 01:38:59,874 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-23 01:38:59,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:38:59,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-23 01:38:59,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2024-11-23 01:38:59,893 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2024-11-23 01:38:59,893 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) [2024-11-23 01:38:59,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:38:59,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2024-11-23 01:38:59,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:39:02,217 INFO L124 PetriNetUnfolderBase]: 10527/20471 cut-off events. [2024-11-23 01:39:02,218 INFO L125 PetriNetUnfolderBase]: For 212868/214080 co-relation queries the response was YES. [2024-11-23 01:39:02,325 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. [2024-11-23 01:39:02,392 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 163 selfloop transitions, 46 changer transitions 0/225 dead transitions. [2024-11-23 01:39:02,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 225 transitions, 2318 flow [2024-11-23 01:39:02,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-23 01:39:02,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-23 01:39:02,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 353 transitions. [2024-11-23 01:39:02,394 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6685606060606061 [2024-11-23 01:39:02,394 INFO L175 Difference]: Start difference. First operand has 120 places, 127 transitions, 1145 flow. Second operand 12 states and 353 transitions. [2024-11-23 01:39:02,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 225 transitions, 2318 flow [2024-11-23 01:39:02,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 225 transitions, 1963 flow, removed 154 selfloop flow, removed 12 redundant places. [2024-11-23 01:39:02,978 INFO L231 Difference]: Finished difference. Result has 117 places, 110 transitions, 1005 flow [2024-11-23 01:39:02,979 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} [2024-11-23 01:39:02,979 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 71 predicate places. [2024-11-23 01:39:02,979 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 110 transitions, 1005 flow [2024-11-23 01:39:02,979 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) [2024-11-23 01:39:02,979 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:39:02,980 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:39:02,988 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-23 01:39:03,180 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 [2024-11-23 01:39:03,181 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-23 01:39:03,181 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:39:03,181 INFO L85 PathProgramCache]: Analyzing trace with hash 580483896, now seen corresponding path program 1 times [2024-11-23 01:39:03,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:39:03,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957869810] [2024-11-23 01:39:03,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:39:03,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:39:03,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:39:03,239 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-23 01:39:03,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:39:03,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957869810] [2024-11-23 01:39:03,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957869810] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:39:03,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:39:03,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 01:39:03,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066021368] [2024-11-23 01:39:03,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:39:03,243 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 01:39:03,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:39:03,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 01:39:03,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 01:39:03,249 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 44 [2024-11-23 01:39:03,249 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) [2024-11-23 01:39:03,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:39:03,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 44 [2024-11-23 01:39:03,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:39:06,384 INFO L124 PetriNetUnfolderBase]: 16719/28403 cut-off events. [2024-11-23 01:39:06,385 INFO L125 PetriNetUnfolderBase]: For 222920/224114 co-relation queries the response was YES. [2024-11-23 01:39:06,513 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. [2024-11-23 01:39:06,640 INFO L140 encePairwiseOnDemand]: 39/44 looper letters, 166 selfloop transitions, 6 changer transitions 0/186 dead transitions. [2024-11-23 01:39:06,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 186 transitions, 2029 flow [2024-11-23 01:39:06,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 01:39:06,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 01:39:06,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 116 transitions. [2024-11-23 01:39:06,641 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6590909090909091 [2024-11-23 01:39:06,641 INFO L175 Difference]: Start difference. First operand has 117 places, 110 transitions, 1005 flow. Second operand 4 states and 116 transitions. [2024-11-23 01:39:06,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 186 transitions, 2029 flow [2024-11-23 01:39:07,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 186 transitions, 1787 flow, removed 109 selfloop flow, removed 7 redundant places. [2024-11-23 01:39:07,456 INFO L231 Difference]: Finished difference. Result has 113 places, 110 transitions, 851 flow [2024-11-23 01:39:07,456 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} [2024-11-23 01:39:07,456 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 67 predicate places. [2024-11-23 01:39:07,457 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 110 transitions, 851 flow [2024-11-23 01:39:07,457 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) [2024-11-23 01:39:07,457 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:39:07,457 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:39:07,457 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-23 01:39:07,457 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)] === [2024-11-23 01:39:07,458 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:39:07,458 INFO L85 PathProgramCache]: Analyzing trace with hash 467203270, now seen corresponding path program 1 times [2024-11-23 01:39:07,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:39:07,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576267168] [2024-11-23 01:39:07,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:39:07,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:39:07,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:39:07,484 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-23 01:39:07,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:39:07,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576267168] [2024-11-23 01:39:07,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576267168] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:39:07,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:39:07,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 01:39:07,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643839485] [2024-11-23 01:39:07,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:39:07,486 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 01:39:07,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:39:07,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 01:39:07,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 01:39:07,490 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2024-11-23 01:39:07,491 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) [2024-11-23 01:39:07,491 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:39:07,491 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2024-11-23 01:39:07,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:39:09,947 INFO L124 PetriNetUnfolderBase]: 13442/23808 cut-off events. [2024-11-23 01:39:09,947 INFO L125 PetriNetUnfolderBase]: For 207598/207598 co-relation queries the response was YES. [2024-11-23 01:39:10,058 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. [2024-11-23 01:39:10,169 INFO L140 encePairwiseOnDemand]: 39/44 looper letters, 239 selfloop transitions, 9 changer transitions 0/264 dead transitions. [2024-11-23 01:39:10,169 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 264 transitions, 2747 flow [2024-11-23 01:39:10,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 01:39:10,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 01:39:10,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 119 transitions. [2024-11-23 01:39:10,170 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6761363636363636 [2024-11-23 01:39:10,170 INFO L175 Difference]: Start difference. First operand has 113 places, 110 transitions, 851 flow. Second operand 4 states and 119 transitions. [2024-11-23 01:39:10,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 264 transitions, 2747 flow [2024-11-23 01:39:10,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 264 transitions, 2675 flow, removed 30 selfloop flow, removed 2 redundant places. [2024-11-23 01:39:10,498 INFO L231 Difference]: Finished difference. Result has 114 places, 110 transitions, 845 flow [2024-11-23 01:39:10,499 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} [2024-11-23 01:39:10,499 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 68 predicate places. [2024-11-23 01:39:10,499 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 110 transitions, 845 flow [2024-11-23 01:39:10,499 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) [2024-11-23 01:39:10,499 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:39:10,500 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:39:10,500 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-23 01:39:10,500 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-23 01:39:10,500 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:39:10,500 INFO L85 PathProgramCache]: Analyzing trace with hash 749651250, now seen corresponding path program 1 times [2024-11-23 01:39:10,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:39:10,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383363014] [2024-11-23 01:39:10,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:39:10,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:39:10,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:39:10,582 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:39:10,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:39:10,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383363014] [2024-11-23 01:39:10,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383363014] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:39:10,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [959588579] [2024-11-23 01:39:10,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:39:10,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:39:10,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:39:10,586 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) [2024-11-23 01:39:10,587 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-23 01:39:10,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:39:10,627 INFO L255 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-23 01:39:10,629 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:39:10,719 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:39:10,720 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 01:39:10,799 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:39:10,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [959588579] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 01:39:10,799 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 01:39:10,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2024-11-23 01:39:10,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443124957] [2024-11-23 01:39:10,800 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 01:39:10,800 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-23 01:39:10,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:39:10,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-23 01:39:10,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272 [2024-11-23 01:39:10,824 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2024-11-23 01:39:10,824 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) [2024-11-23 01:39:10,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:39:10,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2024-11-23 01:39:10,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:39:13,868 INFO L124 PetriNetUnfolderBase]: 14167/27349 cut-off events. [2024-11-23 01:39:13,869 INFO L125 PetriNetUnfolderBase]: For 174170/174170 co-relation queries the response was YES. [2024-11-23 01:39:13,996 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. [2024-11-23 01:39:14,284 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 312 selfloop transitions, 56 changer transitions 0/384 dead transitions. [2024-11-23 01:39:14,284 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 384 transitions, 3259 flow [2024-11-23 01:39:14,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-23 01:39:14,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-23 01:39:14,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 652 transitions. [2024-11-23 01:39:14,286 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7056277056277056 [2024-11-23 01:39:14,287 INFO L175 Difference]: Start difference. First operand has 114 places, 110 transitions, 845 flow. Second operand 21 states and 652 transitions. [2024-11-23 01:39:14,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 384 transitions, 3259 flow [2024-11-23 01:39:14,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 384 transitions, 3041 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-23 01:39:14,851 INFO L231 Difference]: Finished difference. Result has 137 places, 126 transitions, 1177 flow [2024-11-23 01:39:14,852 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} [2024-11-23 01:39:14,852 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 91 predicate places. [2024-11-23 01:39:14,852 INFO L471 AbstractCegarLoop]: Abstraction has has 137 places, 126 transitions, 1177 flow [2024-11-23 01:39:14,852 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) [2024-11-23 01:39:14,853 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:39:14,853 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] [2024-11-23 01:39:14,859 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-23 01:39:15,053 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 [2024-11-23 01:39:15,053 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-23 01:39:15,053 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:39:15,054 INFO L85 PathProgramCache]: Analyzing trace with hash -179984683, now seen corresponding path program 1 times [2024-11-23 01:39:15,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:39:15,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796741310] [2024-11-23 01:39:15,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:39:15,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:39:15,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:39:15,156 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:39:15,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:39:15,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796741310] [2024-11-23 01:39:15,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796741310] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:39:15,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1394617772] [2024-11-23 01:39:15,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:39:15,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:39:15,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:39:15,159 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) [2024-11-23 01:39:15,160 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-23 01:39:15,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:39:15,205 INFO L255 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-23 01:39:15,206 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:39:15,311 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:39:15,312 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 01:39:15,403 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:39:15,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1394617772] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 01:39:15,404 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 01:39:15,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 19 [2024-11-23 01:39:15,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668180194] [2024-11-23 01:39:15,404 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 01:39:15,405 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-23 01:39:15,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:39:15,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-23 01:39:15,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=265, Unknown=0, NotChecked=0, Total=380 [2024-11-23 01:39:15,441 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2024-11-23 01:39:15,442 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) [2024-11-23 01:39:15,442 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:39:15,442 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2024-11-23 01:39:15,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:39:22,510 INFO L124 PetriNetUnfolderBase]: 27307/52855 cut-off events. [2024-11-23 01:39:22,511 INFO L125 PetriNetUnfolderBase]: For 613306/613306 co-relation queries the response was YES. [2024-11-23 01:39:23,018 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. [2024-11-23 01:39:23,206 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 529 selfloop transitions, 124 changer transitions 0/669 dead transitions. [2024-11-23 01:39:23,206 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 669 transitions, 5712 flow [2024-11-23 01:39:23,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-23 01:39:23,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2024-11-23 01:39:23,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1159 transitions. [2024-11-23 01:39:23,209 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.711916461916462 [2024-11-23 01:39:23,209 INFO L175 Difference]: Start difference. First operand has 137 places, 126 transitions, 1177 flow. Second operand 37 states and 1159 transitions. [2024-11-23 01:39:23,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 669 transitions, 5712 flow [2024-11-23 01:39:24,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 669 transitions, 5598 flow, removed 37 selfloop flow, removed 12 redundant places. [2024-11-23 01:39:24,395 INFO L231 Difference]: Finished difference. Result has 175 places, 188 transitions, 2231 flow [2024-11-23 01:39:24,395 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} [2024-11-23 01:39:24,395 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 129 predicate places. [2024-11-23 01:39:24,395 INFO L471 AbstractCegarLoop]: Abstraction has has 175 places, 188 transitions, 2231 flow [2024-11-23 01:39:24,396 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) [2024-11-23 01:39:24,396 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:39:24,396 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] [2024-11-23 01:39:24,402 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-23 01:39:24,596 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 [2024-11-23 01:39:24,596 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-23 01:39:24,597 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:39:24,597 INFO L85 PathProgramCache]: Analyzing trace with hash 1623322012, now seen corresponding path program 1 times [2024-11-23 01:39:24,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:39:24,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037979158] [2024-11-23 01:39:24,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:39:24,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:39:24,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:39:24,672 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:39:24,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:39:24,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037979158] [2024-11-23 01:39:24,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037979158] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:39:24,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [802977752] [2024-11-23 01:39:24,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:39:24,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:39:24,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:39:24,674 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) [2024-11-23 01:39:24,675 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-23 01:39:24,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:39:24,719 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-23 01:39:24,720 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:39:24,832 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:39:24,833 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 01:39:24,933 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:39:24,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [802977752] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 01:39:24,934 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 01:39:24,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 22 [2024-11-23 01:39:24,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399962720] [2024-11-23 01:39:24,934 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 01:39:24,934 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-23 01:39:24,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:39:24,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-23 01:39:24,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=357, Unknown=0, NotChecked=0, Total=506 [2024-11-23 01:39:24,980 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2024-11-23 01:39:24,980 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) [2024-11-23 01:39:24,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:39:24,981 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2024-11-23 01:39:24,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand