./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/pthread/fib_safe-11.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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-11.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 67ab3b79be699544cc101a76da66f98a1e0e6116d5865ddc6f998abd49388964 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 13:45:48,604 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 13:45:48,674 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-19 13:45:48,679 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 13:45:48,680 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 13:45:48,702 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 13:45:48,702 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 13:45:48,703 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 13:45:48,703 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 13:45:48,704 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 13:45:48,705 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 13:45:48,705 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 13:45:48,706 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 13:45:48,706 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 13:45:48,706 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 13:45:48,708 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 13:45:48,708 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 13:45:48,708 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 13:45:48,708 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 13:45:48,708 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 13:45:48,708 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 13:45:48,712 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 13:45:48,712 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 13:45:48,712 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 13:45:48,712 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 13:45:48,712 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-19 13:45:48,713 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-19 13:45:48,713 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 13:45:48,713 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 13:45:48,713 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 13:45:48,713 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 13:45:48,713 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 13:45:48,713 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 13:45:48,714 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 13:45:48,714 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 13:45:48,714 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 13:45:48,714 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 13:45:48,714 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 13:45:48,714 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 13:45:48,714 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 13:45:48,714 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 13:45:48,715 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 13:45:48,715 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 13:45:48,716 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 13:45:48,716 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 67ab3b79be699544cc101a76da66f98a1e0e6116d5865ddc6f998abd49388964 [2024-11-19 13:45:48,909 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 13:45:48,927 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 13:45:48,929 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 13:45:48,930 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 13:45:48,930 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 13:45:48,931 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/fib_safe-11.i [2024-11-19 13:45:50,267 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 13:45:50,473 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 13:45:50,473 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/fib_safe-11.i [2024-11-19 13:45:50,483 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d076e377/bda7e0f9851b49d9a173f8371a9cdbba/FLAG446e90bba [2024-11-19 13:45:50,494 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d076e377/bda7e0f9851b49d9a173f8371a9cdbba [2024-11-19 13:45:50,496 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 13:45:50,497 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 13:45:50,498 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 13:45:50,498 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 13:45:50,503 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 13:45:50,504 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:45:50" (1/1) ... [2024-11-19 13:45:50,504 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2dc1260d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:45:50, skipping insertion in model container [2024-11-19 13:45:50,504 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:45:50" (1/1) ... [2024-11-19 13:45:50,530 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 13:45:50,816 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 13:45:50,825 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 13:45:50,872 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 13:45:50,905 INFO L204 MainTranslator]: Completed translation [2024-11-19 13:45:50,906 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:45:50 WrapperNode [2024-11-19 13:45:50,906 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 13:45:50,907 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 13:45:50,907 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 13:45:50,907 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 13:45:50,913 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:45:50" (1/1) ... [2024-11-19 13:45:50,927 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:45:50" (1/1) ... [2024-11-19 13:45:50,947 INFO L138 Inliner]: procedures = 164, calls = 21, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 72 [2024-11-19 13:45:50,948 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 13:45:50,948 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 13:45:50,948 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 13:45:50,948 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 13:45:50,958 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:45:50" (1/1) ... [2024-11-19 13:45:50,958 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:45:50" (1/1) ... [2024-11-19 13:45:50,960 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:45:50" (1/1) ... [2024-11-19 13:45:50,973 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]. [2024-11-19 13:45:50,973 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:45:50" (1/1) ... [2024-11-19 13:45:50,974 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:45:50" (1/1) ... [2024-11-19 13:45:50,977 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:45:50" (1/1) ... [2024-11-19 13:45:50,979 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:45:50" (1/1) ... [2024-11-19 13:45:50,980 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:45:50" (1/1) ... [2024-11-19 13:45:50,981 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:45:50" (1/1) ... [2024-11-19 13:45:50,983 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 13:45:50,983 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 13:45:50,984 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 13:45:50,984 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 13:45:50,984 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:45:50" (1/1) ... [2024-11-19 13:45:50,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 13:45:51,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 13:45:51,019 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) [2024-11-19 13:45:51,022 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 [2024-11-19 13:45:51,064 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-11-19 13:45:51,064 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-11-19 13:45:51,064 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-11-19 13:45:51,064 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-11-19 13:45:51,064 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-19 13:45:51,064 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 13:45:51,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 13:45:51,064 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-19 13:45:51,065 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 13:45:51,065 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 13:45:51,066 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-19 13:45:51,180 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 13:45:51,181 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 13:45:51,302 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-19 13:45:51,302 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 13:45:51,418 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 13:45:51,418 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-19 13:45:51,418 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:45:51 BoogieIcfgContainer [2024-11-19 13:45:51,419 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 13:45:51,426 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 13:45:51,430 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 13:45:51,432 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 13:45:51,433 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 01:45:50" (1/3) ... [2024-11-19 13:45:51,433 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e79d692 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:45:51, skipping insertion in model container [2024-11-19 13:45:51,437 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:45:50" (2/3) ... [2024-11-19 13:45:51,437 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e79d692 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:45:51, skipping insertion in model container [2024-11-19 13:45:51,437 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:45:51" (3/3) ... [2024-11-19 13:45:51,438 INFO L112 eAbstractionObserver]: Analyzing ICFG fib_safe-11.i [2024-11-19 13:45:51,497 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 13:45:51,501 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2024-11-19 13:45:51,501 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-19 13:45:51,548 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-19 13:45:51,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 48 places, 44 transitions, 96 flow [2024-11-19 13:45:51,609 INFO L124 PetriNetUnfolderBase]: 3/42 cut-off events. [2024-11-19 13:45:51,610 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 13:45:51,613 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. [2024-11-19 13:45:51,614 INFO L82 GeneralOperation]: Start removeDead. Operand has 48 places, 44 transitions, 96 flow [2024-11-19 13:45:51,617 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 46 places, 42 transitions, 90 flow [2024-11-19 13:45:51,629 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 13:45:51,635 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;@75f4a3b9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 13:45:51,637 INFO L334 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2024-11-19 13:45:51,646 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 13:45:51,647 INFO L124 PetriNetUnfolderBase]: 0/12 cut-off events. [2024-11-19 13:45:51,647 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 13:45:51,648 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:45:51,648 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:45:51,649 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-19 13:45:51,652 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:45:51,653 INFO L85 PathProgramCache]: Analyzing trace with hash -1464023297, now seen corresponding path program 1 times [2024-11-19 13:45:51,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:45:51,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160304640] [2024-11-19 13:45:51,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:45:51,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:45:51,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:45:51,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:45:51,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:45:51,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160304640] [2024-11-19 13:45:51,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160304640] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:45:51,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:45:51,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 13:45:51,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364710761] [2024-11-19 13:45:51,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:45:51,904 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 13:45:51,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:45:51,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 13:45:51,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 13:45:51,932 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2024-11-19 13:45:51,934 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) [2024-11-19 13:45:51,934 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:45:51,934 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2024-11-19 13:45:51,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:45:52,145 INFO L124 PetriNetUnfolderBase]: 657/1293 cut-off events. [2024-11-19 13:45:52,146 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-19 13:45:52,150 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. [2024-11-19 13:45:52,159 INFO L140 encePairwiseOnDemand]: 36/44 looper letters, 46 selfloop transitions, 5 changer transitions 0/69 dead transitions. [2024-11-19 13:45:52,159 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 69 transitions, 249 flow [2024-11-19 13:45:52,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 13:45:52,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 13:45:52,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 135 transitions. [2024-11-19 13:45:52,170 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7670454545454546 [2024-11-19 13:45:52,172 INFO L175 Difference]: Start difference. First operand has 46 places, 42 transitions, 90 flow. Second operand 4 states and 135 transitions. [2024-11-19 13:45:52,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 69 transitions, 249 flow [2024-11-19 13:45:52,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 69 transitions, 246 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 13:45:52,179 INFO L231 Difference]: Finished difference. Result has 48 places, 45 transitions, 119 flow [2024-11-19 13:45:52,180 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} [2024-11-19 13:45:52,185 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 2 predicate places. [2024-11-19 13:45:52,185 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 45 transitions, 119 flow [2024-11-19 13:45:52,185 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) [2024-11-19 13:45:52,186 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:45:52,186 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:45:52,186 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 13:45:52,186 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)] === [2024-11-19 13:45:52,187 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:45:52,187 INFO L85 PathProgramCache]: Analyzing trace with hash 1801374430, now seen corresponding path program 1 times [2024-11-19 13:45:52,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:45:52,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949658599] [2024-11-19 13:45:52,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:45:52,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:45:52,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:45:52,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:45:52,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:45:52,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949658599] [2024-11-19 13:45:52,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949658599] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:45:52,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:45:52,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-19 13:45:52,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137982587] [2024-11-19 13:45:52,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:45:52,271 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 13:45:52,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:45:52,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 13:45:52,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 13:45:52,279 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 44 [2024-11-19 13:45:52,279 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) [2024-11-19 13:45:52,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:45:52,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 44 [2024-11-19 13:45:52,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:45:52,508 INFO L124 PetriNetUnfolderBase]: 1169/2451 cut-off events. [2024-11-19 13:45:52,509 INFO L125 PetriNetUnfolderBase]: For 333/333 co-relation queries the response was YES. [2024-11-19 13:45:52,515 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. [2024-11-19 13:45:52,526 INFO L140 encePairwiseOnDemand]: 41/44 looper letters, 42 selfloop transitions, 2 changer transitions 0/63 dead transitions. [2024-11-19 13:45:52,526 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 63 transitions, 263 flow [2024-11-19 13:45:52,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 13:45:52,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 13:45:52,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 102 transitions. [2024-11-19 13:45:52,529 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7727272727272727 [2024-11-19 13:45:52,530 INFO L175 Difference]: Start difference. First operand has 48 places, 45 transitions, 119 flow. Second operand 3 states and 102 transitions. [2024-11-19 13:45:52,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 63 transitions, 263 flow [2024-11-19 13:45:52,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 63 transitions, 263 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-19 13:45:52,532 INFO L231 Difference]: Finished difference. Result has 51 places, 46 transitions, 131 flow [2024-11-19 13:45:52,533 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} [2024-11-19 13:45:52,533 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 5 predicate places. [2024-11-19 13:45:52,533 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 46 transitions, 131 flow [2024-11-19 13:45:52,534 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) [2024-11-19 13:45:52,534 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:45:52,534 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:45:52,534 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 13:45:52,535 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-19 13:45:52,535 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:45:52,535 INFO L85 PathProgramCache]: Analyzing trace with hash 1822895874, now seen corresponding path program 1 times [2024-11-19 13:45:52,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:45:52,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425395096] [2024-11-19 13:45:52,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:45:52,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:45:52,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:45:52,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:45:52,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:45:52,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425395096] [2024-11-19 13:45:52,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425395096] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:45:52,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:45:52,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 13:45:52,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120634448] [2024-11-19 13:45:52,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:45:52,624 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 13:45:52,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:45:52,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 13:45:52,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 13:45:52,636 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2024-11-19 13:45:52,637 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) [2024-11-19 13:45:52,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:45:52,637 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2024-11-19 13:45:52,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:45:52,855 INFO L124 PetriNetUnfolderBase]: 1401/2500 cut-off events. [2024-11-19 13:45:52,855 INFO L125 PetriNetUnfolderBase]: For 470/520 co-relation queries the response was YES. [2024-11-19 13:45:52,858 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. [2024-11-19 13:45:52,867 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 58 selfloop transitions, 3 changer transitions 0/78 dead transitions. [2024-11-19 13:45:52,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 78 transitions, 347 flow [2024-11-19 13:45:52,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 13:45:52,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 13:45:52,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 135 transitions. [2024-11-19 13:45:52,868 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7670454545454546 [2024-11-19 13:45:52,869 INFO L175 Difference]: Start difference. First operand has 51 places, 46 transitions, 131 flow. Second operand 4 states and 135 transitions. [2024-11-19 13:45:52,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 78 transitions, 347 flow [2024-11-19 13:45:52,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 78 transitions, 343 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 13:45:52,871 INFO L231 Difference]: Finished difference. Result has 55 places, 48 transitions, 153 flow [2024-11-19 13:45:52,871 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} [2024-11-19 13:45:52,872 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 9 predicate places. [2024-11-19 13:45:52,872 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 48 transitions, 153 flow [2024-11-19 13:45:52,872 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) [2024-11-19 13:45:52,872 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:45:52,872 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:45:52,872 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 13:45:52,873 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)] === [2024-11-19 13:45:52,873 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:45:52,873 INFO L85 PathProgramCache]: Analyzing trace with hash 8032759, now seen corresponding path program 1 times [2024-11-19 13:45:52,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:45:52,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082994314] [2024-11-19 13:45:52,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:45:52,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:45:52,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:45:52,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:45:52,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:45:52,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082994314] [2024-11-19 13:45:52,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082994314] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:45:52,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:45:52,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-19 13:45:52,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256701443] [2024-11-19 13:45:52,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:45:52,905 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 13:45:52,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:45:52,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 13:45:52,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 13:45:52,911 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 44 [2024-11-19 13:45:52,913 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) [2024-11-19 13:45:52,913 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:45:52,913 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 44 [2024-11-19 13:45:52,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:45:53,076 INFO L124 PetriNetUnfolderBase]: 1133/2318 cut-off events. [2024-11-19 13:45:53,077 INFO L125 PetriNetUnfolderBase]: For 616/766 co-relation queries the response was YES. [2024-11-19 13:45:53,079 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. [2024-11-19 13:45:53,089 INFO L140 encePairwiseOnDemand]: 41/44 looper letters, 44 selfloop transitions, 2 changer transitions 0/66 dead transitions. [2024-11-19 13:45:53,090 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 66 transitions, 308 flow [2024-11-19 13:45:53,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 13:45:53,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 13:45:53,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 102 transitions. [2024-11-19 13:45:53,092 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7727272727272727 [2024-11-19 13:45:53,092 INFO L175 Difference]: Start difference. First operand has 55 places, 48 transitions, 153 flow. Second operand 3 states and 102 transitions. [2024-11-19 13:45:53,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 66 transitions, 308 flow [2024-11-19 13:45:53,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 66 transitions, 305 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 13:45:53,094 INFO L231 Difference]: Finished difference. Result has 57 places, 48 transitions, 159 flow [2024-11-19 13:45:53,095 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} [2024-11-19 13:45:53,096 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 11 predicate places. [2024-11-19 13:45:53,097 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 48 transitions, 159 flow [2024-11-19 13:45:53,097 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) [2024-11-19 13:45:53,097 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:45:53,097 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:45:53,098 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 13:45:53,098 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-19 13:45:53,098 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:45:53,100 INFO L85 PathProgramCache]: Analyzing trace with hash 266605758, now seen corresponding path program 1 times [2024-11-19 13:45:53,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:45:53,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683490515] [2024-11-19 13:45:53,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:45:53,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:45:53,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:45:53,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:45:53,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:45:53,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683490515] [2024-11-19 13:45:53,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683490515] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:45:53,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:45:53,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 13:45:53,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109403460] [2024-11-19 13:45:53,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:45:53,154 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 13:45:53,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:45:53,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 13:45:53,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 13:45:53,160 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2024-11-19 13:45:53,161 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) [2024-11-19 13:45:53,161 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:45:53,161 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2024-11-19 13:45:53,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:45:53,460 INFO L124 PetriNetUnfolderBase]: 2065/3713 cut-off events. [2024-11-19 13:45:53,460 INFO L125 PetriNetUnfolderBase]: For 1351/1759 co-relation queries the response was YES. [2024-11-19 13:45:53,465 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. [2024-11-19 13:45:53,481 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 60 selfloop transitions, 3 changer transitions 0/81 dead transitions. [2024-11-19 13:45:53,482 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 81 transitions, 399 flow [2024-11-19 13:45:53,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 13:45:53,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 13:45:53,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 131 transitions. [2024-11-19 13:45:53,483 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7443181818181818 [2024-11-19 13:45:53,483 INFO L175 Difference]: Start difference. First operand has 57 places, 48 transitions, 159 flow. Second operand 4 states and 131 transitions. [2024-11-19 13:45:53,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 81 transitions, 399 flow [2024-11-19 13:45:53,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 81 transitions, 391 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 13:45:53,485 INFO L231 Difference]: Finished difference. Result has 60 places, 50 transitions, 179 flow [2024-11-19 13:45:53,485 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} [2024-11-19 13:45:53,486 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 14 predicate places. [2024-11-19 13:45:53,486 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 50 transitions, 179 flow [2024-11-19 13:45:53,486 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) [2024-11-19 13:45:53,486 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:45:53,486 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:45:53,486 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 13:45:53,487 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)] === [2024-11-19 13:45:53,487 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:45:53,487 INFO L85 PathProgramCache]: Analyzing trace with hash 249015829, now seen corresponding path program 1 times [2024-11-19 13:45:53,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:45:53,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488458762] [2024-11-19 13:45:53,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:45:53,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:45:53,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:45:53,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:45:53,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:45:53,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488458762] [2024-11-19 13:45:53,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488458762] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:45:53,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:45:53,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 13:45:53,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471351491] [2024-11-19 13:45:53,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:45:53,517 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 13:45:53,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:45:53,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 13:45:53,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 13:45:53,522 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2024-11-19 13:45:53,522 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) [2024-11-19 13:45:53,523 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:45:53,523 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2024-11-19 13:45:53,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:45:53,824 INFO L124 PetriNetUnfolderBase]: 1601/3219 cut-off events. [2024-11-19 13:45:53,824 INFO L125 PetriNetUnfolderBase]: For 1181/1655 co-relation queries the response was YES. [2024-11-19 13:45:53,829 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. [2024-11-19 13:45:53,846 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 62 selfloop transitions, 3 changer transitions 0/85 dead transitions. [2024-11-19 13:45:53,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 85 transitions, 445 flow [2024-11-19 13:45:53,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 13:45:53,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 13:45:53,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 133 transitions. [2024-11-19 13:45:53,848 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7556818181818182 [2024-11-19 13:45:53,848 INFO L175 Difference]: Start difference. First operand has 60 places, 50 transitions, 179 flow. Second operand 4 states and 133 transitions. [2024-11-19 13:45:53,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 85 transitions, 445 flow [2024-11-19 13:45:53,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 85 transitions, 441 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 13:45:53,852 INFO L231 Difference]: Finished difference. Result has 64 places, 51 transitions, 197 flow [2024-11-19 13:45:53,852 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} [2024-11-19 13:45:53,853 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 18 predicate places. [2024-11-19 13:45:53,854 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 51 transitions, 197 flow [2024-11-19 13:45:53,855 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) [2024-11-19 13:45:53,855 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:45:53,855 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:45:53,855 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 13:45:53,855 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-19 13:45:53,856 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:45:53,856 INFO L85 PathProgramCache]: Analyzing trace with hash 444542449, now seen corresponding path program 1 times [2024-11-19 13:45:53,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:45:53,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450267052] [2024-11-19 13:45:53,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:45:53,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:45:53,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:45:53,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:45:53,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:45:53,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450267052] [2024-11-19 13:45:53,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450267052] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:45:53,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:45:53,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 13:45:53,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456058284] [2024-11-19 13:45:53,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:45:53,914 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 13:45:53,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:45:53,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 13:45:53,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-19 13:45:53,920 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2024-11-19 13:45:53,920 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) [2024-11-19 13:45:53,920 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:45:53,920 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2024-11-19 13:45:53,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:45:54,111 INFO L124 PetriNetUnfolderBase]: 1121/2195 cut-off events. [2024-11-19 13:45:54,111 INFO L125 PetriNetUnfolderBase]: For 1435/1757 co-relation queries the response was YES. [2024-11-19 13:45:54,114 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. [2024-11-19 13:45:54,120 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 65 selfloop transitions, 6 changer transitions 0/91 dead transitions. [2024-11-19 13:45:54,120 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 91 transitions, 499 flow [2024-11-19 13:45:54,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 13:45:54,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 13:45:54,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 161 transitions. [2024-11-19 13:45:54,121 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7318181818181818 [2024-11-19 13:45:54,121 INFO L175 Difference]: Start difference. First operand has 64 places, 51 transitions, 197 flow. Second operand 5 states and 161 transitions. [2024-11-19 13:45:54,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 91 transitions, 499 flow [2024-11-19 13:45:54,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 91 transitions, 489 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 13:45:54,123 INFO L231 Difference]: Finished difference. Result has 67 places, 52 transitions, 217 flow [2024-11-19 13:45:54,123 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} [2024-11-19 13:45:54,124 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 21 predicate places. [2024-11-19 13:45:54,124 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 52 transitions, 217 flow [2024-11-19 13:45:54,124 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) [2024-11-19 13:45:54,124 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:45:54,124 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:45:54,125 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-19 13:45:54,125 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-19 13:45:54,125 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:45:54,125 INFO L85 PathProgramCache]: Analyzing trace with hash 1079587370, now seen corresponding path program 1 times [2024-11-19 13:45:54,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:45:54,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604856748] [2024-11-19 13:45:54,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:45:54,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:45:54,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:45:54,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:45:54,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:45:54,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604856748] [2024-11-19 13:45:54,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604856748] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:45:54,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:45:54,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 13:45:54,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73610509] [2024-11-19 13:45:54,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:45:54,175 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 13:45:54,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:45:54,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 13:45:54,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-19 13:45:54,180 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2024-11-19 13:45:54,181 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) [2024-11-19 13:45:54,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:45:54,181 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2024-11-19 13:45:54,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:45:54,335 INFO L124 PetriNetUnfolderBase]: 1167/2324 cut-off events. [2024-11-19 13:45:54,336 INFO L125 PetriNetUnfolderBase]: For 1787/2048 co-relation queries the response was YES. [2024-11-19 13:45:54,340 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. [2024-11-19 13:45:54,349 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 65 selfloop transitions, 7 changer transitions 0/92 dead transitions. [2024-11-19 13:45:54,349 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 92 transitions, 520 flow [2024-11-19 13:45:54,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 13:45:54,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 13:45:54,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 162 transitions. [2024-11-19 13:45:54,350 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7363636363636363 [2024-11-19 13:45:54,350 INFO L175 Difference]: Start difference. First operand has 67 places, 52 transitions, 217 flow. Second operand 5 states and 162 transitions. [2024-11-19 13:45:54,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 92 transitions, 520 flow [2024-11-19 13:45:54,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 92 transitions, 509 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-19 13:45:54,354 INFO L231 Difference]: Finished difference. Result has 69 places, 54 transitions, 242 flow [2024-11-19 13:45:54,354 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} [2024-11-19 13:45:54,355 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 23 predicate places. [2024-11-19 13:45:54,355 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 54 transitions, 242 flow [2024-11-19 13:45:54,355 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) [2024-11-19 13:45:54,355 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:45:54,355 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:45:54,355 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-19 13:45:54,355 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-19 13:45:54,356 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:45:54,356 INFO L85 PathProgramCache]: Analyzing trace with hash 1079601649, now seen corresponding path program 1 times [2024-11-19 13:45:54,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:45:54,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366002420] [2024-11-19 13:45:54,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:45:54,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:45:54,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:45:54,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:45:54,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:45:54,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366002420] [2024-11-19 13:45:54,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366002420] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:45:54,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:45:54,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 13:45:54,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405294637] [2024-11-19 13:45:54,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:45:54,411 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 13:45:54,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:45:54,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 13:45:54,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-19 13:45:54,418 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2024-11-19 13:45:54,418 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) [2024-11-19 13:45:54,418 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:45:54,418 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2024-11-19 13:45:54,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:45:54,579 INFO L124 PetriNetUnfolderBase]: 1041/2086 cut-off events. [2024-11-19 13:45:54,579 INFO L125 PetriNetUnfolderBase]: For 2141/2375 co-relation queries the response was YES. [2024-11-19 13:45:54,583 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. [2024-11-19 13:45:54,589 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 53 selfloop transitions, 5 changer transitions 0/78 dead transitions. [2024-11-19 13:45:54,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 78 transitions, 454 flow [2024-11-19 13:45:54,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 13:45:54,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 13:45:54,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 148 transitions. [2024-11-19 13:45:54,590 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6727272727272727 [2024-11-19 13:45:54,590 INFO L175 Difference]: Start difference. First operand has 69 places, 54 transitions, 242 flow. Second operand 5 states and 148 transitions. [2024-11-19 13:45:54,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 78 transitions, 454 flow [2024-11-19 13:45:54,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 78 transitions, 439 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-11-19 13:45:54,594 INFO L231 Difference]: Finished difference. Result has 71 places, 54 transitions, 243 flow [2024-11-19 13:45:54,594 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} [2024-11-19 13:45:54,594 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 25 predicate places. [2024-11-19 13:45:54,595 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 54 transitions, 243 flow [2024-11-19 13:45:54,595 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) [2024-11-19 13:45:54,595 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:45:54,595 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:45:54,595 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-19 13:45:54,595 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-19 13:45:54,596 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:45:54,596 INFO L85 PathProgramCache]: Analyzing trace with hash 1079601650, now seen corresponding path program 1 times [2024-11-19 13:45:54,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:45:54,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555731061] [2024-11-19 13:45:54,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:45:54,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:45:54,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:45:54,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:45:54,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:45:54,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555731061] [2024-11-19 13:45:54,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555731061] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:45:54,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:45:54,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 13:45:54,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303012558] [2024-11-19 13:45:54,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:45:54,633 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 13:45:54,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:45:54,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 13:45:54,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-19 13:45:54,638 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2024-11-19 13:45:54,639 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) [2024-11-19 13:45:54,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:45:54,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2024-11-19 13:45:54,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:45:54,796 INFO L124 PetriNetUnfolderBase]: 1083/2163 cut-off events. [2024-11-19 13:45:54,796 INFO L125 PetriNetUnfolderBase]: For 2515/2758 co-relation queries the response was YES. [2024-11-19 13:45:54,800 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. [2024-11-19 13:45:54,807 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 62 selfloop transitions, 7 changer transitions 0/89 dead transitions. [2024-11-19 13:45:54,807 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 89 transitions, 524 flow [2024-11-19 13:45:54,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 13:45:54,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 13:45:54,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 158 transitions. [2024-11-19 13:45:54,808 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7181818181818181 [2024-11-19 13:45:54,808 INFO L175 Difference]: Start difference. First operand has 71 places, 54 transitions, 243 flow. Second operand 5 states and 158 transitions. [2024-11-19 13:45:54,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 89 transitions, 524 flow [2024-11-19 13:45:54,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 89 transitions, 510 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-19 13:45:54,812 INFO L231 Difference]: Finished difference. Result has 72 places, 56 transitions, 265 flow [2024-11-19 13:45:54,812 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} [2024-11-19 13:45:54,812 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 26 predicate places. [2024-11-19 13:45:54,813 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 56 transitions, 265 flow [2024-11-19 13:45:54,813 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) [2024-11-19 13:45:54,813 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:45:54,813 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:45:54,813 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-19 13:45:54,813 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)] === [2024-11-19 13:45:54,813 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:45:54,814 INFO L85 PathProgramCache]: Analyzing trace with hash 1022324864, now seen corresponding path program 1 times [2024-11-19 13:45:54,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:45:54,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357689625] [2024-11-19 13:45:54,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:45:54,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:45:54,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:45:54,851 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:45:54,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:45:54,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357689625] [2024-11-19 13:45:54,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357689625] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 13:45:54,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [304655235] [2024-11-19 13:45:54,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:45:54,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:45:54,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 13:45:54,857 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) [2024-11-19 13:45:54,872 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 13:45:54,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:45:54,921 INFO L255 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-19 13:45:54,924 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 13:45:55,017 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:45:55,017 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 13:45:55,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [304655235] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:45:55,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 13:45:55,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 4 [2024-11-19 13:45:55,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67644691] [2024-11-19 13:45:55,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:45:55,018 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 13:45:55,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:45:55,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 13:45:55,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-19 13:45:55,031 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 44 [2024-11-19 13:45:55,031 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) [2024-11-19 13:45:55,031 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:45:55,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 44 [2024-11-19 13:45:55,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:45:55,203 INFO L124 PetriNetUnfolderBase]: 1083/2422 cut-off events. [2024-11-19 13:45:55,204 INFO L125 PetriNetUnfolderBase]: For 3742/4021 co-relation queries the response was YES. [2024-11-19 13:45:55,208 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. [2024-11-19 13:45:55,215 INFO L140 encePairwiseOnDemand]: 41/44 looper letters, 54 selfloop transitions, 2 changer transitions 0/77 dead transitions. [2024-11-19 13:45:55,216 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 77 transitions, 509 flow [2024-11-19 13:45:55,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 13:45:55,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 13:45:55,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 120 transitions. [2024-11-19 13:45:55,218 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6818181818181818 [2024-11-19 13:45:55,219 INFO L175 Difference]: Start difference. First operand has 72 places, 56 transitions, 265 flow. Second operand 4 states and 120 transitions. [2024-11-19 13:45:55,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 77 transitions, 509 flow [2024-11-19 13:45:55,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 77 transitions, 489 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-11-19 13:45:55,223 INFO L231 Difference]: Finished difference. Result has 72 places, 55 transitions, 254 flow [2024-11-19 13:45:55,223 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} [2024-11-19 13:45:55,224 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 26 predicate places. [2024-11-19 13:45:55,224 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 55 transitions, 254 flow [2024-11-19 13:45:55,224 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) [2024-11-19 13:45:55,224 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:45:55,224 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:45:55,237 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-19 13:45:55,428 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 [2024-11-19 13:45:55,429 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-19 13:45:55,429 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:45:55,429 INFO L85 PathProgramCache]: Analyzing trace with hash -1387157528, now seen corresponding path program 1 times [2024-11-19 13:45:55,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:45:55,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640110144] [2024-11-19 13:45:55,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:45:55,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:45:55,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:45:55,511 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:45:55,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:45:55,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640110144] [2024-11-19 13:45:55,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640110144] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 13:45:55,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1036872547] [2024-11-19 13:45:55,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:45:55,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:45:55,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 13:45:55,513 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) [2024-11-19 13:45:55,516 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 13:45:55,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:45:55,572 INFO L255 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 13:45:55,573 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 13:45:55,602 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:45:55,603 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 13:45:55,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1036872547] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:45:55,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 13:45:55,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-19 13:45:55,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502296296] [2024-11-19 13:45:55,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:45:55,603 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 13:45:55,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:45:55,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 13:45:55,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-19 13:45:55,615 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2024-11-19 13:45:55,616 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) [2024-11-19 13:45:55,616 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:45:55,616 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2024-11-19 13:45:55,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:45:55,902 INFO L124 PetriNetUnfolderBase]: 1453/2628 cut-off events. [2024-11-19 13:45:55,902 INFO L125 PetriNetUnfolderBase]: For 4353/4704 co-relation queries the response was YES. [2024-11-19 13:45:55,907 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. [2024-11-19 13:45:55,917 INFO L140 encePairwiseOnDemand]: 40/44 looper letters, 84 selfloop transitions, 5 changer transitions 0/106 dead transitions. [2024-11-19 13:45:55,917 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 106 transitions, 678 flow [2024-11-19 13:45:55,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 13:45:55,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 13:45:55,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 182 transitions. [2024-11-19 13:45:55,919 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6893939393939394 [2024-11-19 13:45:55,919 INFO L175 Difference]: Start difference. First operand has 72 places, 55 transitions, 254 flow. Second operand 6 states and 182 transitions. [2024-11-19 13:45:55,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 106 transitions, 678 flow [2024-11-19 13:45:55,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 106 transitions, 672 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 13:45:55,924 INFO L231 Difference]: Finished difference. Result has 74 places, 54 transitions, 257 flow [2024-11-19 13:45:55,925 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} [2024-11-19 13:45:55,926 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 28 predicate places. [2024-11-19 13:45:55,926 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 54 transitions, 257 flow [2024-11-19 13:45:55,926 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) [2024-11-19 13:45:55,926 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:45:55,926 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:45:55,942 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-19 13:45:56,126 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 [2024-11-19 13:45:56,128 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)] === [2024-11-19 13:45:56,128 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:45:56,128 INFO L85 PathProgramCache]: Analyzing trace with hash 1627299989, now seen corresponding path program 1 times [2024-11-19 13:45:56,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:45:56,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627848217] [2024-11-19 13:45:56,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:45:56,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:45:56,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:45:56,179 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:45:56,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:45:56,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627848217] [2024-11-19 13:45:56,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627848217] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 13:45:56,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [247273292] [2024-11-19 13:45:56,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:45:56,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:45:56,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 13:45:56,184 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) [2024-11-19 13:45:56,185 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 13:45:56,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:45:56,229 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-19 13:45:56,230 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 13:45:56,301 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:45:56,301 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 13:45:56,349 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:45:56,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [247273292] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 13:45:56,349 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 13:45:56,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2024-11-19 13:45:56,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325542709] [2024-11-19 13:45:56,349 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 13:45:56,349 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-19 13:45:56,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:45:56,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-19 13:45:56,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2024-11-19 13:45:56,359 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2024-11-19 13:45:56,360 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) [2024-11-19 13:45:56,360 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:45:56,360 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2024-11-19 13:45:56,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:45:56,847 INFO L124 PetriNetUnfolderBase]: 2907/6208 cut-off events. [2024-11-19 13:45:56,847 INFO L125 PetriNetUnfolderBase]: For 10495/11093 co-relation queries the response was YES. [2024-11-19 13:45:56,860 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. [2024-11-19 13:45:56,882 INFO L140 encePairwiseOnDemand]: 41/44 looper letters, 129 selfloop transitions, 5 changer transitions 0/153 dead transitions. [2024-11-19 13:45:56,882 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 153 transitions, 1087 flow [2024-11-19 13:45:56,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 13:45:56,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 13:45:56,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 207 transitions. [2024-11-19 13:45:56,883 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7840909090909091 [2024-11-19 13:45:56,884 INFO L175 Difference]: Start difference. First operand has 74 places, 54 transitions, 257 flow. Second operand 6 states and 207 transitions. [2024-11-19 13:45:56,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 153 transitions, 1087 flow [2024-11-19 13:45:56,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 153 transitions, 1078 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-19 13:45:56,890 INFO L231 Difference]: Finished difference. Result has 79 places, 57 transitions, 288 flow [2024-11-19 13:45:56,890 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} [2024-11-19 13:45:56,891 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 33 predicate places. [2024-11-19 13:45:56,891 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 57 transitions, 288 flow [2024-11-19 13:45:56,891 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) [2024-11-19 13:45:56,892 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:45:56,892 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:45:56,908 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-19 13:45:57,092 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 [2024-11-19 13:45:57,093 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-19 13:45:57,093 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:45:57,093 INFO L85 PathProgramCache]: Analyzing trace with hash -52210084, now seen corresponding path program 1 times [2024-11-19 13:45:57,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:45:57,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17748976] [2024-11-19 13:45:57,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:45:57,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:45:57,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:45:57,115 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 13:45:57,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:45:57,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17748976] [2024-11-19 13:45:57,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17748976] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:45:57,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:45:57,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 13:45:57,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865735149] [2024-11-19 13:45:57,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:45:57,117 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 13:45:57,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:45:57,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 13:45:57,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 13:45:57,122 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 44 [2024-11-19 13:45:57,122 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) [2024-11-19 13:45:57,123 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:45:57,123 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 44 [2024-11-19 13:45:57,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:45:57,637 INFO L124 PetriNetUnfolderBase]: 4097/7261 cut-off events. [2024-11-19 13:45:57,637 INFO L125 PetriNetUnfolderBase]: For 13419/14315 co-relation queries the response was YES. [2024-11-19 13:45:57,649 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. [2024-11-19 13:45:57,667 INFO L140 encePairwiseOnDemand]: 39/44 looper letters, 77 selfloop transitions, 6 changer transitions 0/99 dead transitions. [2024-11-19 13:45:57,668 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 99 transitions, 682 flow [2024-11-19 13:45:57,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 13:45:57,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 13:45:57,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 124 transitions. [2024-11-19 13:45:57,669 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7045454545454546 [2024-11-19 13:45:57,669 INFO L175 Difference]: Start difference. First operand has 79 places, 57 transitions, 288 flow. Second operand 4 states and 124 transitions. [2024-11-19 13:45:57,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 99 transitions, 682 flow [2024-11-19 13:45:57,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 99 transitions, 646 flow, removed 13 selfloop flow, removed 3 redundant places. [2024-11-19 13:45:57,678 INFO L231 Difference]: Finished difference. Result has 79 places, 57 transitions, 288 flow [2024-11-19 13:45:57,678 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} [2024-11-19 13:45:57,679 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 33 predicate places. [2024-11-19 13:45:57,679 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 57 transitions, 288 flow [2024-11-19 13:45:57,679 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) [2024-11-19 13:45:57,679 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:45:57,679 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:45:57,679 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-19 13:45:57,679 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-19 13:45:57,680 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:45:57,680 INFO L85 PathProgramCache]: Analyzing trace with hash -1228200713, now seen corresponding path program 1 times [2024-11-19 13:45:57,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:45:57,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201994019] [2024-11-19 13:45:57,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:45:57,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:45:57,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:45:57,779 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:45:57,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:45:57,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201994019] [2024-11-19 13:45:57,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201994019] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 13:45:57,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [122716429] [2024-11-19 13:45:57,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:45:57,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:45:57,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 13:45:57,781 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) [2024-11-19 13:45:57,782 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-19 13:45:57,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:45:57,828 INFO L255 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 13:45:57,828 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 13:45:57,859 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:45:57,860 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 13:45:57,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [122716429] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:45:57,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 13:45:57,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-19 13:45:57,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557084248] [2024-11-19 13:45:57,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:45:57,861 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 13:45:57,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:45:57,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 13:45:57,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-19 13:45:57,870 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2024-11-19 13:45:57,870 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) [2024-11-19 13:45:57,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:45:57,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2024-11-19 13:45:57,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:45:58,475 INFO L124 PetriNetUnfolderBase]: 3691/6641 cut-off events. [2024-11-19 13:45:58,475 INFO L125 PetriNetUnfolderBase]: For 13177/13600 co-relation queries the response was YES. [2024-11-19 13:45:58,487 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. [2024-11-19 13:45:58,509 INFO L140 encePairwiseOnDemand]: 40/44 looper letters, 90 selfloop transitions, 5 changer transitions 0/111 dead transitions. [2024-11-19 13:45:58,509 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 111 transitions, 769 flow [2024-11-19 13:45:58,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 13:45:58,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 13:45:58,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 176 transitions. [2024-11-19 13:45:58,511 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-19 13:45:58,511 INFO L175 Difference]: Start difference. First operand has 79 places, 57 transitions, 288 flow. Second operand 6 states and 176 transitions. [2024-11-19 13:45:58,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 111 transitions, 769 flow [2024-11-19 13:45:58,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 111 transitions, 755 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 13:45:58,522 INFO L231 Difference]: Finished difference. Result has 81 places, 56 transitions, 286 flow [2024-11-19 13:45:58,523 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} [2024-11-19 13:45:58,523 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 35 predicate places. [2024-11-19 13:45:58,523 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 56 transitions, 286 flow [2024-11-19 13:45:58,523 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) [2024-11-19 13:45:58,523 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:45:58,524 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:45:58,537 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-19 13:45:58,724 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 [2024-11-19 13:45:58,725 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)] === [2024-11-19 13:45:58,725 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:45:58,725 INFO L85 PathProgramCache]: Analyzing trace with hash -1093307593, now seen corresponding path program 1 times [2024-11-19 13:45:58,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:45:58,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747627829] [2024-11-19 13:45:58,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:45:58,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:45:58,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:45:58,886 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:45:58,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:45:58,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747627829] [2024-11-19 13:45:58,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747627829] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 13:45:58,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [232768801] [2024-11-19 13:45:58,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:45:58,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:45:58,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 13:45:58,890 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) [2024-11-19 13:45:58,891 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-19 13:45:58,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:45:58,931 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-19 13:45:58,932 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 13:45:58,958 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:45:58,958 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 13:45:58,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [232768801] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:45:58,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 13:45:58,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-11-19 13:45:58,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807126057] [2024-11-19 13:45:58,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:45:58,958 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 13:45:58,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:45:58,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 13:45:58,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-19 13:45:58,964 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2024-11-19 13:45:58,964 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) [2024-11-19 13:45:58,964 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:45:58,964 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2024-11-19 13:45:58,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:45:59,386 INFO L124 PetriNetUnfolderBase]: 3819/6579 cut-off events. [2024-11-19 13:45:59,386 INFO L125 PetriNetUnfolderBase]: For 14016/14223 co-relation queries the response was YES. [2024-11-19 13:45:59,397 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. [2024-11-19 13:45:59,416 INFO L140 encePairwiseOnDemand]: 40/44 looper letters, 53 selfloop transitions, 8 changer transitions 0/77 dead transitions. [2024-11-19 13:45:59,416 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 77 transitions, 539 flow [2024-11-19 13:45:59,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 13:45:59,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 13:45:59,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 113 transitions. [2024-11-19 13:45:59,417 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6420454545454546 [2024-11-19 13:45:59,417 INFO L175 Difference]: Start difference. First operand has 81 places, 56 transitions, 286 flow. Second operand 4 states and 113 transitions. [2024-11-19 13:45:59,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 77 transitions, 539 flow [2024-11-19 13:45:59,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 77 transitions, 533 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-19 13:45:59,430 INFO L231 Difference]: Finished difference. Result has 80 places, 55 transitions, 293 flow [2024-11-19 13:45:59,430 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} [2024-11-19 13:45:59,431 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 34 predicate places. [2024-11-19 13:45:59,432 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 55 transitions, 293 flow [2024-11-19 13:45:59,432 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) [2024-11-19 13:45:59,432 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:45:59,432 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:45:59,447 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-19 13:45:59,632 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 [2024-11-19 13:45:59,633 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-19 13:45:59,633 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:45:59,634 INFO L85 PathProgramCache]: Analyzing trace with hash 381587199, now seen corresponding path program 1 times [2024-11-19 13:45:59,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:45:59,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916150158] [2024-11-19 13:45:59,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:45:59,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:45:59,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:45:59,697 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:45:59,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:45:59,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916150158] [2024-11-19 13:45:59,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916150158] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 13:45:59,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1780793646] [2024-11-19 13:45:59,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:45:59,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:45:59,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 13:45:59,699 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) [2024-11-19 13:45:59,700 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-19 13:45:59,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:45:59,746 INFO L255 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 13:45:59,746 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 13:45:59,811 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:45:59,811 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 13:45:59,865 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:45:59,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1780793646] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 13:45:59,866 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 13:45:59,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2024-11-19 13:45:59,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958412384] [2024-11-19 13:45:59,866 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 13:45:59,866 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-19 13:45:59,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:45:59,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-19 13:45:59,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2024-11-19 13:45:59,884 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2024-11-19 13:45:59,885 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) [2024-11-19 13:45:59,885 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:45:59,885 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2024-11-19 13:45:59,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:46:02,182 INFO L124 PetriNetUnfolderBase]: 11247/21497 cut-off events. [2024-11-19 13:46:02,183 INFO L125 PetriNetUnfolderBase]: For 54578/55667 co-relation queries the response was YES. [2024-11-19 13:46:02,256 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. [2024-11-19 13:46:02,453 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 393 selfloop transitions, 71 changer transitions 0/480 dead transitions. [2024-11-19 13:46:02,454 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 480 transitions, 3763 flow [2024-11-19 13:46:02,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-19 13:46:02,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-11-19 13:46:02,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 905 transitions. [2024-11-19 13:46:02,457 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.734577922077922 [2024-11-19 13:46:02,457 INFO L175 Difference]: Start difference. First operand has 80 places, 55 transitions, 293 flow. Second operand 28 states and 905 transitions. [2024-11-19 13:46:02,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 480 transitions, 3763 flow [2024-11-19 13:46:02,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 480 transitions, 3411 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-19 13:46:02,517 INFO L231 Difference]: Finished difference. Result has 120 places, 127 transitions, 1145 flow [2024-11-19 13:46:02,517 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} [2024-11-19 13:46:02,517 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 74 predicate places. [2024-11-19 13:46:02,518 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 127 transitions, 1145 flow [2024-11-19 13:46:02,518 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) [2024-11-19 13:46:02,518 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:46:02,518 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:46:02,530 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-19 13:46:02,719 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 [2024-11-19 13:46:02,719 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-19 13:46:02,720 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:46:02,720 INFO L85 PathProgramCache]: Analyzing trace with hash -1139380794, now seen corresponding path program 1 times [2024-11-19 13:46:02,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:46:02,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531966311] [2024-11-19 13:46:02,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:46:02,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:46:02,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:46:02,767 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:46:02,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:46:02,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531966311] [2024-11-19 13:46:02,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531966311] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 13:46:02,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [454521613] [2024-11-19 13:46:02,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:46:02,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:46:02,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 13:46:02,770 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) [2024-11-19 13:46:02,771 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-19 13:46:02,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:46:02,813 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 13:46:02,814 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 13:46:02,876 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:46:02,877 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 13:46:02,927 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:46:02,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [454521613] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 13:46:02,928 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 13:46:02,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2024-11-19 13:46:02,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97604770] [2024-11-19 13:46:02,928 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 13:46:02,928 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-19 13:46:02,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:46:02,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-19 13:46:02,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2024-11-19 13:46:02,948 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2024-11-19 13:46:02,949 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) [2024-11-19 13:46:02,949 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:46:02,949 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2024-11-19 13:46:02,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:46:05,366 INFO L124 PetriNetUnfolderBase]: 10527/20471 cut-off events. [2024-11-19 13:46:05,367 INFO L125 PetriNetUnfolderBase]: For 212868/214080 co-relation queries the response was YES. [2024-11-19 13:46:05,443 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. [2024-11-19 13:46:05,538 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 163 selfloop transitions, 46 changer transitions 0/225 dead transitions. [2024-11-19 13:46:05,539 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 225 transitions, 2318 flow [2024-11-19 13:46:05,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-19 13:46:05,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-19 13:46:05,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 353 transitions. [2024-11-19 13:46:05,541 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6685606060606061 [2024-11-19 13:46:05,541 INFO L175 Difference]: Start difference. First operand has 120 places, 127 transitions, 1145 flow. Second operand 12 states and 353 transitions. [2024-11-19 13:46:05,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 225 transitions, 2318 flow [2024-11-19 13:46:06,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 225 transitions, 1963 flow, removed 154 selfloop flow, removed 12 redundant places. [2024-11-19 13:46:06,042 INFO L231 Difference]: Finished difference. Result has 117 places, 110 transitions, 1005 flow [2024-11-19 13:46:06,042 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} [2024-11-19 13:46:06,042 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 71 predicate places. [2024-11-19 13:46:06,042 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 110 transitions, 1005 flow [2024-11-19 13:46:06,043 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) [2024-11-19 13:46:06,043 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:46:06,043 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:46:06,056 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-19 13:46:06,247 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 [2024-11-19 13:46:06,248 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-19 13:46:06,249 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:46:06,249 INFO L85 PathProgramCache]: Analyzing trace with hash 580483896, now seen corresponding path program 1 times [2024-11-19 13:46:06,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:46:06,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708195569] [2024-11-19 13:46:06,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:46:06,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:46:06,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:46:06,276 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 13:46:06,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:46:06,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708195569] [2024-11-19 13:46:06,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708195569] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:46:06,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:46:06,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 13:46:06,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103062911] [2024-11-19 13:46:06,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:46:06,277 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 13:46:06,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:46:06,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 13:46:06,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 13:46:06,283 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 44 [2024-11-19 13:46:06,283 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) [2024-11-19 13:46:06,283 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:46:06,284 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 44 [2024-11-19 13:46:06,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:46:09,296 INFO L124 PetriNetUnfolderBase]: 16719/28403 cut-off events. [2024-11-19 13:46:09,297 INFO L125 PetriNetUnfolderBase]: For 222920/224114 co-relation queries the response was YES. [2024-11-19 13:46:09,412 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. [2024-11-19 13:46:09,520 INFO L140 encePairwiseOnDemand]: 39/44 looper letters, 166 selfloop transitions, 6 changer transitions 0/186 dead transitions. [2024-11-19 13:46:09,520 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 186 transitions, 2029 flow [2024-11-19 13:46:09,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 13:46:09,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 13:46:09,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 116 transitions. [2024-11-19 13:46:09,522 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6590909090909091 [2024-11-19 13:46:09,522 INFO L175 Difference]: Start difference. First operand has 117 places, 110 transitions, 1005 flow. Second operand 4 states and 116 transitions. [2024-11-19 13:46:09,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 186 transitions, 2029 flow [2024-11-19 13:46:10,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 186 transitions, 1787 flow, removed 109 selfloop flow, removed 7 redundant places. [2024-11-19 13:46:10,193 INFO L231 Difference]: Finished difference. Result has 113 places, 110 transitions, 851 flow [2024-11-19 13:46:10,193 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} [2024-11-19 13:46:10,194 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 67 predicate places. [2024-11-19 13:46:10,194 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 110 transitions, 851 flow [2024-11-19 13:46:10,194 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) [2024-11-19 13:46:10,194 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:46:10,194 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:46:10,194 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-19 13:46:10,194 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)] === [2024-11-19 13:46:10,195 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:46:10,195 INFO L85 PathProgramCache]: Analyzing trace with hash 467203270, now seen corresponding path program 1 times [2024-11-19 13:46:10,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:46:10,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286103851] [2024-11-19 13:46:10,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:46:10,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:46:10,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:46:10,218 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 13:46:10,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:46:10,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286103851] [2024-11-19 13:46:10,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286103851] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:46:10,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:46:10,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 13:46:10,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280381210] [2024-11-19 13:46:10,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:46:10,218 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 13:46:10,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:46:10,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 13:46:10,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 13:46:10,228 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2024-11-19 13:46:10,228 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) [2024-11-19 13:46:10,228 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:46:10,229 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2024-11-19 13:46:10,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:46:12,573 INFO L124 PetriNetUnfolderBase]: 13442/23808 cut-off events. [2024-11-19 13:46:12,573 INFO L125 PetriNetUnfolderBase]: For 207598/207598 co-relation queries the response was YES. [2024-11-19 13:46:12,639 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. [2024-11-19 13:46:12,721 INFO L140 encePairwiseOnDemand]: 39/44 looper letters, 239 selfloop transitions, 9 changer transitions 0/264 dead transitions. [2024-11-19 13:46:12,722 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 264 transitions, 2747 flow [2024-11-19 13:46:12,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 13:46:12,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 13:46:12,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 119 transitions. [2024-11-19 13:46:12,722 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6761363636363636 [2024-11-19 13:46:12,722 INFO L175 Difference]: Start difference. First operand has 113 places, 110 transitions, 851 flow. Second operand 4 states and 119 transitions. [2024-11-19 13:46:12,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 264 transitions, 2747 flow [2024-11-19 13:46:12,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 264 transitions, 2675 flow, removed 30 selfloop flow, removed 2 redundant places. [2024-11-19 13:46:12,960 INFO L231 Difference]: Finished difference. Result has 114 places, 110 transitions, 845 flow [2024-11-19 13:46:12,961 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} [2024-11-19 13:46:12,961 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 68 predicate places. [2024-11-19 13:46:12,961 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 110 transitions, 845 flow [2024-11-19 13:46:12,961 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) [2024-11-19 13:46:12,961 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:46:12,962 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:46:12,962 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-19 13:46:12,962 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-19 13:46:12,962 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:46:12,962 INFO L85 PathProgramCache]: Analyzing trace with hash 749651250, now seen corresponding path program 1 times [2024-11-19 13:46:12,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:46:12,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068324718] [2024-11-19 13:46:12,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:46:12,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:46:12,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:46:13,036 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:46:13,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:46:13,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068324718] [2024-11-19 13:46:13,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068324718] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 13:46:13,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [836659665] [2024-11-19 13:46:13,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:46:13,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:46:13,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 13:46:13,038 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) [2024-11-19 13:46:13,040 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-19 13:46:13,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:46:13,089 INFO L255 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-19 13:46:13,090 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 13:46:13,168 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:46:13,168 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 13:46:13,243 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:46:13,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [836659665] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 13:46:13,244 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 13:46:13,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2024-11-19 13:46:13,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111710901] [2024-11-19 13:46:13,244 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 13:46:13,245 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-19 13:46:13,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:46:13,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-19 13:46:13,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272 [2024-11-19 13:46:13,268 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2024-11-19 13:46:13,269 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) [2024-11-19 13:46:13,269 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:46:13,269 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2024-11-19 13:46:13,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:46:16,588 INFO L124 PetriNetUnfolderBase]: 14167/27349 cut-off events. [2024-11-19 13:46:16,588 INFO L125 PetriNetUnfolderBase]: For 174170/174170 co-relation queries the response was YES. [2024-11-19 13:46:16,704 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. [2024-11-19 13:46:16,797 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 312 selfloop transitions, 56 changer transitions 0/384 dead transitions. [2024-11-19 13:46:16,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 384 transitions, 3259 flow [2024-11-19 13:46:16,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-19 13:46:16,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-19 13:46:16,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 652 transitions. [2024-11-19 13:46:16,799 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7056277056277056 [2024-11-19 13:46:16,799 INFO L175 Difference]: Start difference. First operand has 114 places, 110 transitions, 845 flow. Second operand 21 states and 652 transitions. [2024-11-19 13:46:16,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 384 transitions, 3259 flow [2024-11-19 13:46:17,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 384 transitions, 3041 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 13:46:17,262 INFO L231 Difference]: Finished difference. Result has 137 places, 126 transitions, 1177 flow [2024-11-19 13:46:17,262 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} [2024-11-19 13:46:17,262 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 91 predicate places. [2024-11-19 13:46:17,262 INFO L471 AbstractCegarLoop]: Abstraction has has 137 places, 126 transitions, 1177 flow [2024-11-19 13:46:17,263 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) [2024-11-19 13:46:17,263 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:46:17,263 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] [2024-11-19 13:46:17,275 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-19 13:46:17,463 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 [2024-11-19 13:46:17,463 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-19 13:46:17,464 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:46:17,464 INFO L85 PathProgramCache]: Analyzing trace with hash -179984683, now seen corresponding path program 1 times [2024-11-19 13:46:17,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:46:17,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33064228] [2024-11-19 13:46:17,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:46:17,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:46:17,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:46:17,550 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:46:17,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:46:17,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33064228] [2024-11-19 13:46:17,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33064228] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 13:46:17,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [455471200] [2024-11-19 13:46:17,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:46:17,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:46:17,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 13:46:17,552 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) [2024-11-19 13:46:17,557 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-19 13:46:17,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:46:17,599 INFO L255 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-19 13:46:17,601 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 13:46:17,694 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:46:17,694 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 13:46:17,781 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:46:17,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [455471200] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 13:46:17,781 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 13:46:17,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 19 [2024-11-19 13:46:17,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998142193] [2024-11-19 13:46:17,782 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 13:46:17,782 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-19 13:46:17,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:46:17,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-19 13:46:17,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=265, Unknown=0, NotChecked=0, Total=380 [2024-11-19 13:46:17,820 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2024-11-19 13:46:17,821 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) [2024-11-19 13:46:17,821 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:46:17,821 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2024-11-19 13:46:17,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:46:24,714 INFO L124 PetriNetUnfolderBase]: 27307/52855 cut-off events. [2024-11-19 13:46:24,714 INFO L125 PetriNetUnfolderBase]: For 613306/613306 co-relation queries the response was YES. [2024-11-19 13:46:25,117 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. [2024-11-19 13:46:25,308 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 529 selfloop transitions, 124 changer transitions 0/669 dead transitions. [2024-11-19 13:46:25,308 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 669 transitions, 5712 flow [2024-11-19 13:46:25,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-19 13:46:25,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2024-11-19 13:46:25,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1159 transitions. [2024-11-19 13:46:25,311 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.711916461916462 [2024-11-19 13:46:25,311 INFO L175 Difference]: Start difference. First operand has 137 places, 126 transitions, 1177 flow. Second operand 37 states and 1159 transitions. [2024-11-19 13:46:25,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 669 transitions, 5712 flow [2024-11-19 13:46:26,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 669 transitions, 5598 flow, removed 37 selfloop flow, removed 12 redundant places. [2024-11-19 13:46:26,819 INFO L231 Difference]: Finished difference. Result has 175 places, 188 transitions, 2231 flow [2024-11-19 13:46:26,820 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} [2024-11-19 13:46:26,820 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 129 predicate places. [2024-11-19 13:46:26,820 INFO L471 AbstractCegarLoop]: Abstraction has has 175 places, 188 transitions, 2231 flow [2024-11-19 13:46:26,821 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) [2024-11-19 13:46:26,821 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:46:26,821 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] [2024-11-19 13:46:26,833 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-19 13:46:27,021 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 [2024-11-19 13:46:27,021 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-19 13:46:27,022 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:46:27,022 INFO L85 PathProgramCache]: Analyzing trace with hash 1623322012, now seen corresponding path program 1 times [2024-11-19 13:46:27,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:46:27,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411276781] [2024-11-19 13:46:27,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:46:27,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:46:27,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:46:27,127 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:46:27,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:46:27,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411276781] [2024-11-19 13:46:27,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411276781] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 13:46:27,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [851586299] [2024-11-19 13:46:27,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:46:27,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:46:27,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 13:46:27,132 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) [2024-11-19 13:46:27,133 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-19 13:46:27,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:46:27,184 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-19 13:46:27,185 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 13:46:27,314 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:46:27,314 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 13:46:27,427 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:46:27,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [851586299] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 13:46:27,427 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 13:46:27,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 22 [2024-11-19 13:46:27,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879596523] [2024-11-19 13:46:27,428 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 13:46:27,429 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-19 13:46:27,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:46:27,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-19 13:46:27,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=357, Unknown=0, NotChecked=0, Total=506 [2024-11-19 13:46:27,478 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2024-11-19 13:46:27,479 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) [2024-11-19 13:46:27,479 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:46:27,479 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2024-11-19 13:46:27,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand