./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/pthread/fib_unsafe-5.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 023d838f 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_unsafe-5.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 e0f90189cbea201dcd094fc9e84327a00ade17017ada90c5df84c8712afaf176 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 22:03:10,639 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 22:03:10,717 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-10 22:03:10,725 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 22:03:10,726 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 22:03:10,755 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 22:03:10,756 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 22:03:10,756 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 22:03:10,757 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 22:03:10,758 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 22:03:10,760 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 22:03:10,760 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 22:03:10,760 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 22:03:10,761 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 22:03:10,761 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 22:03:10,761 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 22:03:10,762 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-10 22:03:10,762 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 22:03:10,766 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 22:03:10,767 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 22:03:10,767 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 22:03:10,767 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-10 22:03:10,768 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 22:03:10,768 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-10 22:03:10,768 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 22:03:10,768 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-10 22:03:10,768 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-10 22:03:10,769 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 22:03:10,769 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-10 22:03:10,769 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 22:03:10,769 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 22:03:10,770 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 22:03:10,770 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 22:03:10,770 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 22:03:10,770 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 22:03:10,771 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 22:03:10,771 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 22:03:10,773 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-10 22:03:10,773 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 22:03:10,774 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 22:03:10,774 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 22:03:10,774 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 22:03:10,774 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 22:03:10,775 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 22:03:10,775 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e0f90189cbea201dcd094fc9e84327a00ade17017ada90c5df84c8712afaf176 [2024-11-10 22:03:11,016 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 22:03:11,041 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 22:03:11,045 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 22:03:11,046 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 22:03:11,046 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 22:03:11,047 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/fib_unsafe-5.i [2024-11-10 22:03:12,409 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 22:03:12,687 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 22:03:12,687 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/fib_unsafe-5.i [2024-11-10 22:03:12,702 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/50df8e80a/eb777bf10e284cb28881a055356808d3/FLAGfe156e3bb [2024-11-10 22:03:12,719 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/50df8e80a/eb777bf10e284cb28881a055356808d3 [2024-11-10 22:03:12,722 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 22:03:12,723 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 22:03:12,726 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 22:03:12,726 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 22:03:12,731 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 22:03:12,732 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:03:12" (1/1) ... [2024-11-10 22:03:12,733 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d1416c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:03:12, skipping insertion in model container [2024-11-10 22:03:12,733 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:03:12" (1/1) ... [2024-11-10 22:03:12,779 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 22:03:13,097 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 22:03:13,109 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 22:03:13,171 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 22:03:13,213 INFO L204 MainTranslator]: Completed translation [2024-11-10 22:03:13,213 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:03:13 WrapperNode [2024-11-10 22:03:13,213 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 22:03:13,214 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 22:03:13,215 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 22:03:13,215 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 22:03:13,222 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:03:13" (1/1) ... [2024-11-10 22:03:13,238 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:03:13" (1/1) ... [2024-11-10 22:03:13,261 INFO L138 Inliner]: procedures = 164, calls = 21, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 71 [2024-11-10 22:03:13,262 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 22:03:13,262 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 22:03:13,262 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 22:03:13,263 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 22:03:13,272 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:03:13" (1/1) ... [2024-11-10 22:03:13,272 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:03:13" (1/1) ... [2024-11-10 22:03:13,276 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:03:13" (1/1) ... [2024-11-10 22:03:13,303 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]. [2024-11-10 22:03:13,304 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:03:13" (1/1) ... [2024-11-10 22:03:13,304 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:03:13" (1/1) ... [2024-11-10 22:03:13,312 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:03:13" (1/1) ... [2024-11-10 22:03:13,313 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:03:13" (1/1) ... [2024-11-10 22:03:13,314 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:03:13" (1/1) ... [2024-11-10 22:03:13,318 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:03:13" (1/1) ... [2024-11-10 22:03:13,321 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 22:03:13,322 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 22:03:13,322 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 22:03:13,322 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 22:03:13,323 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:03:13" (1/1) ... [2024-11-10 22:03:13,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 22:03:13,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:03:13,355 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) [2024-11-10 22:03:13,361 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 [2024-11-10 22:03:13,409 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-11-10 22:03:13,410 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-11-10 22:03:13,410 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-11-10 22:03:13,410 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-11-10 22:03:13,410 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-10 22:03:13,410 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 22:03:13,411 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 22:03:13,411 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-10 22:03:13,411 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 22:03:13,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 22:03:13,414 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-10 22:03:13,559 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 22:03:13,560 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 22:03:13,763 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 22:03:13,763 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 22:03:13,875 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 22:03:13,876 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 22:03:13,876 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:03:13 BoogieIcfgContainer [2024-11-10 22:03:13,876 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 22:03:13,880 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 22:03:13,880 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 22:03:13,884 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 22:03:13,884 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 10:03:12" (1/3) ... [2024-11-10 22:03:13,885 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2378f77d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:03:13, skipping insertion in model container [2024-11-10 22:03:13,886 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:03:13" (2/3) ... [2024-11-10 22:03:13,888 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2378f77d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:03:13, skipping insertion in model container [2024-11-10 22:03:13,888 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:03:13" (3/3) ... [2024-11-10 22:03:13,889 INFO L112 eAbstractionObserver]: Analyzing ICFG fib_unsafe-5.i [2024-11-10 22:03:13,906 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 22:03:13,906 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2024-11-10 22:03:13,907 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 22:03:13,951 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-10 22:03:13,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 54 places, 53 transitions, 114 flow [2024-11-10 22:03:14,014 INFO L124 PetriNetUnfolderBase]: 6/51 cut-off events. [2024-11-10 22:03:14,015 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 22:03:14,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58 conditions, 51 events. 6/51 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 149 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 48. Up to 2 conditions per place. [2024-11-10 22:03:14,019 INFO L82 GeneralOperation]: Start removeDead. Operand has 54 places, 53 transitions, 114 flow [2024-11-10 22:03:14,023 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 52 places, 51 transitions, 108 flow [2024-11-10 22:03:14,041 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 22:03:14,048 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;@50feec45, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 22:03:14,049 INFO L334 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2024-11-10 22:03:14,059 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 22:03:14,059 INFO L124 PetriNetUnfolderBase]: 1/15 cut-off events. [2024-11-10 22:03:14,059 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 22:03:14,060 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:03:14,062 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:03:14,063 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-10 22:03:14,067 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:03:14,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1890733871, now seen corresponding path program 1 times [2024-11-10 22:03:14,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:03:14,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042081092] [2024-11-10 22:03:14,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:03:14,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:03:14,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:03:14,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:03:14,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:03:14,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042081092] [2024-11-10 22:03:14,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042081092] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:03:14,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:03:14,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:03:14,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596514281] [2024-11-10 22:03:14,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:03:14,424 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:03:14,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:03:14,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:03:14,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:03:14,461 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 53 [2024-11-10 22:03:14,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 51 transitions, 108 flow. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 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) [2024-11-10 22:03:14,465 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:03:14,465 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 53 [2024-11-10 22:03:14,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:03:14,827 INFO L124 PetriNetUnfolderBase]: 785/1644 cut-off events. [2024-11-10 22:03:14,827 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-10 22:03:14,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2855 conditions, 1644 events. 785/1644 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 11249 event pairs, 188 based on Foata normal form. 230/1468 useless extension candidates. Maximal degree in co-relation 2839. Up to 612 conditions per place. [2024-11-10 22:03:14,847 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 49 selfloop transitions, 5 changer transitions 0/77 dead transitions. [2024-11-10 22:03:14,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 77 transitions, 271 flow [2024-11-10 22:03:14,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:03:14,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:03:14,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 167 transitions. [2024-11-10 22:03:14,861 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7877358490566038 [2024-11-10 22:03:14,862 INFO L175 Difference]: Start difference. First operand has 52 places, 51 transitions, 108 flow. Second operand 4 states and 167 transitions. [2024-11-10 22:03:14,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 77 transitions, 271 flow [2024-11-10 22:03:14,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 77 transitions, 268 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 22:03:14,872 INFO L231 Difference]: Finished difference. Result has 54 places, 51 transitions, 131 flow [2024-11-10 22:03:14,875 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=131, PETRI_PLACES=54, PETRI_TRANSITIONS=51} [2024-11-10 22:03:14,879 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 2 predicate places. [2024-11-10 22:03:14,880 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 51 transitions, 131 flow [2024-11-10 22:03:14,880 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 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) [2024-11-10 22:03:14,880 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:03:14,880 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:03:14,880 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 22:03:14,881 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-10 22:03:14,881 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:03:14,881 INFO L85 PathProgramCache]: Analyzing trace with hash -1287009838, now seen corresponding path program 1 times [2024-11-10 22:03:14,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:03:14,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25240902] [2024-11-10 22:03:14,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:03:14,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:03:14,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:03:15,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:03:15,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:03:15,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25240902] [2024-11-10 22:03:15,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25240902] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:03:15,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:03:15,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-10 22:03:15,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306127368] [2024-11-10 22:03:15,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:03:15,005 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 22:03:15,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:03:15,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 22:03:15,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 22:03:15,016 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 53 [2024-11-10 22:03:15,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 51 transitions, 131 flow. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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) [2024-11-10 22:03:15,018 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:03:15,018 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 53 [2024-11-10 22:03:15,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:03:15,301 INFO L124 PetriNetUnfolderBase]: 1553/3036 cut-off events. [2024-11-10 22:03:15,301 INFO L125 PetriNetUnfolderBase]: For 433/433 co-relation queries the response was YES. [2024-11-10 22:03:15,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6311 conditions, 3036 events. 1553/3036 cut-off events. For 433/433 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 23089 event pairs, 486 based on Foata normal form. 56/2383 useless extension candidates. Maximal degree in co-relation 6293. Up to 1409 conditions per place. [2024-11-10 22:03:15,349 INFO L140 encePairwiseOnDemand]: 49/53 looper letters, 47 selfloop transitions, 2 changer transitions 0/70 dead transitions. [2024-11-10 22:03:15,349 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 70 transitions, 287 flow [2024-11-10 22:03:15,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 22:03:15,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 22:03:15,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 114 transitions. [2024-11-10 22:03:15,351 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7169811320754716 [2024-11-10 22:03:15,351 INFO L175 Difference]: Start difference. First operand has 54 places, 51 transitions, 131 flow. Second operand 3 states and 114 transitions. [2024-11-10 22:03:15,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 70 transitions, 287 flow [2024-11-10 22:03:15,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 70 transitions, 287 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 22:03:15,354 INFO L231 Difference]: Finished difference. Result has 57 places, 52 transitions, 145 flow [2024-11-10 22:03:15,354 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=131, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=145, PETRI_PLACES=57, PETRI_TRANSITIONS=52} [2024-11-10 22:03:15,355 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 5 predicate places. [2024-11-10 22:03:15,355 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 52 transitions, 145 flow [2024-11-10 22:03:15,355 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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) [2024-11-10 22:03:15,355 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:03:15,355 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:03:15,356 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 22:03:15,356 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-10 22:03:15,356 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:03:15,356 INFO L85 PathProgramCache]: Analyzing trace with hash -224073259, now seen corresponding path program 1 times [2024-11-10 22:03:15,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:03:15,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039381067] [2024-11-10 22:03:15,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:03:15,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:03:15,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:03:15,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:03:15,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:03:15,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039381067] [2024-11-10 22:03:15,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039381067] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:03:15,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:03:15,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:03:15,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823777803] [2024-11-10 22:03:15,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:03:15,444 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:03:15,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:03:15,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:03:15,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:03:15,455 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 53 [2024-11-10 22:03:15,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 52 transitions, 145 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) [2024-11-10 22:03:15,457 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:03:15,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 53 [2024-11-10 22:03:15,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:03:15,825 INFO L124 PetriNetUnfolderBase]: 1867/3280 cut-off events. [2024-11-10 22:03:15,826 INFO L125 PetriNetUnfolderBase]: For 550/708 co-relation queries the response was YES. [2024-11-10 22:03:15,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7306 conditions, 3280 events. 1867/3280 cut-off events. For 550/708 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 22453 event pairs, 453 based on Foata normal form. 143/2828 useless extension candidates. Maximal degree in co-relation 7285. Up to 1719 conditions per place. [2024-11-10 22:03:15,852 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 64 selfloop transitions, 3 changer transitions 0/86 dead transitions. [2024-11-10 22:03:15,852 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 86 transitions, 377 flow [2024-11-10 22:03:15,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:03:15,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:03:15,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 149 transitions. [2024-11-10 22:03:15,856 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7028301886792453 [2024-11-10 22:03:15,856 INFO L175 Difference]: Start difference. First operand has 57 places, 52 transitions, 145 flow. Second operand 4 states and 149 transitions. [2024-11-10 22:03:15,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 86 transitions, 377 flow [2024-11-10 22:03:15,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 86 transitions, 373 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:03:15,861 INFO L231 Difference]: Finished difference. Result has 61 places, 54 transitions, 167 flow [2024-11-10 22:03:15,861 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=167, PETRI_PLACES=61, PETRI_TRANSITIONS=54} [2024-11-10 22:03:15,863 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 9 predicate places. [2024-11-10 22:03:15,863 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 54 transitions, 167 flow [2024-11-10 22:03:15,863 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) [2024-11-10 22:03:15,863 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:03:15,864 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:03:15,864 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-10 22:03:15,864 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-10 22:03:15,865 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:03:15,865 INFO L85 PathProgramCache]: Analyzing trace with hash 134132928, now seen corresponding path program 1 times [2024-11-10 22:03:15,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:03:15,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289044653] [2024-11-10 22:03:15,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:03:15,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:03:15,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:03:15,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:03:15,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:03:15,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289044653] [2024-11-10 22:03:15,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289044653] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:03:15,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:03:15,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:03:15,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090817442] [2024-11-10 22:03:15,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:03:15,942 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:03:15,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:03:15,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:03:15,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:03:15,959 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 53 [2024-11-10 22:03:15,959 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 54 transitions, 167 flow. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 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) [2024-11-10 22:03:15,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:03:15,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 53 [2024-11-10 22:03:15,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:03:16,266 INFO L124 PetriNetUnfolderBase]: 1381/2687 cut-off events. [2024-11-10 22:03:16,267 INFO L125 PetriNetUnfolderBase]: For 657/845 co-relation queries the response was YES. [2024-11-10 22:03:16,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6077 conditions, 2687 events. 1381/2687 cut-off events. For 657/845 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 19821 event pairs, 159 based on Foata normal form. 179/2399 useless extension candidates. Maximal degree in co-relation 6053. Up to 1551 conditions per place. [2024-11-10 22:03:16,287 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 63 selfloop transitions, 3 changer transitions 0/87 dead transitions. [2024-11-10 22:03:16,287 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 87 transitions, 415 flow [2024-11-10 22:03:16,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:03:16,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:03:16,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 145 transitions. [2024-11-10 22:03:16,290 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6839622641509434 [2024-11-10 22:03:16,290 INFO L175 Difference]: Start difference. First operand has 61 places, 54 transitions, 167 flow. Second operand 4 states and 145 transitions. [2024-11-10 22:03:16,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 87 transitions, 415 flow [2024-11-10 22:03:16,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 87 transitions, 411 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:03:16,295 INFO L231 Difference]: Finished difference. Result has 65 places, 55 transitions, 185 flow [2024-11-10 22:03:16,295 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=185, PETRI_PLACES=65, PETRI_TRANSITIONS=55} [2024-11-10 22:03:16,296 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 13 predicate places. [2024-11-10 22:03:16,297 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 55 transitions, 185 flow [2024-11-10 22:03:16,297 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 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) [2024-11-10 22:03:16,298 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:03:16,298 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:03:16,298 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-10 22:03:16,298 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-10 22:03:16,300 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:03:16,300 INFO L85 PathProgramCache]: Analyzing trace with hash 1279990136, now seen corresponding path program 1 times [2024-11-10 22:03:16,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:03:16,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111829771] [2024-11-10 22:03:16,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:03:16,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:03:16,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:03:16,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:03:16,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:03:16,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111829771] [2024-11-10 22:03:16,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111829771] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:03:16,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:03:16,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:03:16,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487004110] [2024-11-10 22:03:16,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:03:16,369 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:03:16,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:03:16,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:03:16,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:03:16,378 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 53 [2024-11-10 22:03:16,379 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 55 transitions, 185 flow. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:03:16,379 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:03:16,379 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 53 [2024-11-10 22:03:16,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:03:16,800 INFO L124 PetriNetUnfolderBase]: 2225/3891 cut-off events. [2024-11-10 22:03:16,800 INFO L125 PetriNetUnfolderBase]: For 1992/2810 co-relation queries the response was YES. [2024-11-10 22:03:16,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9617 conditions, 3891 events. 2225/3891 cut-off events. For 1992/2810 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 28024 event pairs, 457 based on Foata normal form. 261/3540 useless extension candidates. Maximal degree in co-relation 9590. Up to 2241 conditions per place. [2024-11-10 22:03:16,842 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 69 selfloop transitions, 3 changer transitions 0/92 dead transitions. [2024-11-10 22:03:16,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 92 transitions, 459 flow [2024-11-10 22:03:16,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:03:16,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:03:16,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 145 transitions. [2024-11-10 22:03:16,844 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6839622641509434 [2024-11-10 22:03:16,845 INFO L175 Difference]: Start difference. First operand has 65 places, 55 transitions, 185 flow. Second operand 4 states and 145 transitions. [2024-11-10 22:03:16,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 92 transitions, 459 flow [2024-11-10 22:03:16,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 92 transitions, 451 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 22:03:16,851 INFO L231 Difference]: Finished difference. Result has 68 places, 57 transitions, 205 flow [2024-11-10 22:03:16,852 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=205, PETRI_PLACES=68, PETRI_TRANSITIONS=57} [2024-11-10 22:03:16,853 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 16 predicate places. [2024-11-10 22:03:16,854 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 57 transitions, 205 flow [2024-11-10 22:03:16,854 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:03:16,854 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:03:16,854 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:03:16,855 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-10 22:03:16,855 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-10 22:03:16,855 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:03:16,856 INFO L85 PathProgramCache]: Analyzing trace with hash -47953521, now seen corresponding path program 1 times [2024-11-10 22:03:16,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:03:16,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876608034] [2024-11-10 22:03:16,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:03:16,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:03:16,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:03:16,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:03:16,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:03:16,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876608034] [2024-11-10 22:03:16,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876608034] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:03:16,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:03:16,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 22:03:16,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756439675] [2024-11-10 22:03:16,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:03:16,940 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 22:03:16,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:03:16,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 22:03:16,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-10 22:03:16,941 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 53 [2024-11-10 22:03:16,941 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 57 transitions, 205 flow. Second operand has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:03:16,941 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:03:16,942 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 53 [2024-11-10 22:03:16,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:03:17,258 INFO L124 PetriNetUnfolderBase]: 1279/2649 cut-off events. [2024-11-10 22:03:17,258 INFO L125 PetriNetUnfolderBase]: For 1134/1629 co-relation queries the response was YES. [2024-11-10 22:03:17,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6655 conditions, 2649 events. 1279/2649 cut-off events. For 1134/1629 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 19011 event pairs, 183 based on Foata normal form. 80/2418 useless extension candidates. Maximal degree in co-relation 6626. Up to 954 conditions per place. [2024-11-10 22:03:17,278 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 69 selfloop transitions, 6 changer transitions 0/100 dead transitions. [2024-11-10 22:03:17,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 100 transitions, 503 flow [2024-11-10 22:03:17,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 22:03:17,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 22:03:17,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 190 transitions. [2024-11-10 22:03:17,280 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7169811320754716 [2024-11-10 22:03:17,280 INFO L175 Difference]: Start difference. First operand has 68 places, 57 transitions, 205 flow. Second operand 5 states and 190 transitions. [2024-11-10 22:03:17,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 100 transitions, 503 flow [2024-11-10 22:03:17,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 100 transitions, 500 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:03:17,289 INFO L231 Difference]: Finished difference. Result has 72 places, 58 transitions, 227 flow [2024-11-10 22:03:17,289 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=203, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=227, PETRI_PLACES=72, PETRI_TRANSITIONS=58} [2024-11-10 22:03:17,290 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 20 predicate places. [2024-11-10 22:03:17,291 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 58 transitions, 227 flow [2024-11-10 22:03:17,291 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:03:17,291 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:03:17,291 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:03:17,291 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-10 22:03:17,292 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-10 22:03:17,292 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:03:17,292 INFO L85 PathProgramCache]: Analyzing trace with hash 1567526994, now seen corresponding path program 1 times [2024-11-10 22:03:17,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:03:17,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953641765] [2024-11-10 22:03:17,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:03:17,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:03:17,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:03:17,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:03:17,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:03:17,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953641765] [2024-11-10 22:03:17,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953641765] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:03:17,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:03:17,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 22:03:17,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437988987] [2024-11-10 22:03:17,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:03:17,384 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 22:03:17,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:03:17,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 22:03:17,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-10 22:03:17,385 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 53 [2024-11-10 22:03:17,385 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 58 transitions, 227 flow. Second operand has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:03:17,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:03:17,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 53 [2024-11-10 22:03:17,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:03:17,705 INFO L124 PetriNetUnfolderBase]: 1331/2831 cut-off events. [2024-11-10 22:03:17,705 INFO L125 PetriNetUnfolderBase]: For 1783/2226 co-relation queries the response was YES. [2024-11-10 22:03:17,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7396 conditions, 2831 events. 1331/2831 cut-off events. For 1783/2226 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 20944 event pairs, 255 based on Foata normal form. 130/2866 useless extension candidates. Maximal degree in co-relation 7364. Up to 1260 conditions per place. [2024-11-10 22:03:17,728 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 69 selfloop transitions, 7 changer transitions 0/101 dead transitions. [2024-11-10 22:03:17,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 101 transitions, 531 flow [2024-11-10 22:03:17,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 22:03:17,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 22:03:17,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 191 transitions. [2024-11-10 22:03:17,730 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.720754716981132 [2024-11-10 22:03:17,731 INFO L175 Difference]: Start difference. First operand has 72 places, 58 transitions, 227 flow. Second operand 5 states and 191 transitions. [2024-11-10 22:03:17,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 101 transitions, 531 flow [2024-11-10 22:03:17,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 101 transitions, 520 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-10 22:03:17,736 INFO L231 Difference]: Finished difference. Result has 74 places, 60 transitions, 252 flow [2024-11-10 22:03:17,737 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=217, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=252, PETRI_PLACES=74, PETRI_TRANSITIONS=60} [2024-11-10 22:03:17,737 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 22 predicate places. [2024-11-10 22:03:17,738 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 60 transitions, 252 flow [2024-11-10 22:03:17,738 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:03:17,738 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:03:17,738 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:03:17,738 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-10 22:03:17,739 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-10 22:03:17,739 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:03:17,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1981667573, now seen corresponding path program 1 times [2024-11-10 22:03:17,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:03:17,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984034906] [2024-11-10 22:03:17,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:03:17,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:03:17,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:03:17,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:03:17,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:03:17,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984034906] [2024-11-10 22:03:17,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984034906] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:03:17,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:03:17,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 22:03:17,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811588073] [2024-11-10 22:03:17,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:03:17,800 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 22:03:17,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:03:17,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 22:03:17,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-10 22:03:17,801 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 53 [2024-11-10 22:03:17,803 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 60 transitions, 252 flow. Second operand has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:03:17,803 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:03:17,804 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 53 [2024-11-10 22:03:17,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:03:18,122 INFO L124 PetriNetUnfolderBase]: 1187/2615 cut-off events. [2024-11-10 22:03:18,123 INFO L125 PetriNetUnfolderBase]: For 2211/2602 co-relation queries the response was YES. [2024-11-10 22:03:18,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7057 conditions, 2615 events. 1187/2615 cut-off events. For 2211/2602 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 19349 event pairs, 303 based on Foata normal form. 120/2672 useless extension candidates. Maximal degree in co-relation 7024. Up to 1384 conditions per place. [2024-11-10 22:03:18,143 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 56 selfloop transitions, 5 changer transitions 0/86 dead transitions. [2024-11-10 22:03:18,144 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 86 transitions, 466 flow [2024-11-10 22:03:18,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 22:03:18,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 22:03:18,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 176 transitions. [2024-11-10 22:03:18,145 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6641509433962264 [2024-11-10 22:03:18,146 INFO L175 Difference]: Start difference. First operand has 74 places, 60 transitions, 252 flow. Second operand 5 states and 176 transitions. [2024-11-10 22:03:18,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 86 transitions, 466 flow [2024-11-10 22:03:18,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 86 transitions, 451 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-11-10 22:03:18,152 INFO L231 Difference]: Finished difference. Result has 76 places, 60 transitions, 253 flow [2024-11-10 22:03:18,152 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=237, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=253, PETRI_PLACES=76, PETRI_TRANSITIONS=60} [2024-11-10 22:03:18,153 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 24 predicate places. [2024-11-10 22:03:18,153 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 60 transitions, 253 flow [2024-11-10 22:03:18,153 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:03:18,153 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:03:18,153 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:03:18,154 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-10 22:03:18,154 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-10 22:03:18,154 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:03:18,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1981667574, now seen corresponding path program 1 times [2024-11-10 22:03:18,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:03:18,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769615356] [2024-11-10 22:03:18,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:03:18,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:03:18,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:03:18,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:03:18,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:03:18,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769615356] [2024-11-10 22:03:18,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769615356] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:03:18,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:03:18,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 22:03:18,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261278775] [2024-11-10 22:03:18,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:03:18,215 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 22:03:18,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:03:18,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 22:03:18,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-10 22:03:18,216 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 53 [2024-11-10 22:03:18,216 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 60 transitions, 253 flow. Second operand has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:03:18,217 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:03:18,217 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 53 [2024-11-10 22:03:18,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:03:18,555 INFO L124 PetriNetUnfolderBase]: 1235/2735 cut-off events. [2024-11-10 22:03:18,555 INFO L125 PetriNetUnfolderBase]: For 2633/3028 co-relation queries the response was YES. [2024-11-10 22:03:18,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7410 conditions, 2735 events. 1235/2735 cut-off events. For 2633/3028 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 20411 event pairs, 295 based on Foata normal form. 112/2832 useless extension candidates. Maximal degree in co-relation 7376. Up to 1400 conditions per place. [2024-11-10 22:03:18,572 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 66 selfloop transitions, 7 changer transitions 0/98 dead transitions. [2024-11-10 22:03:18,572 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 98 transitions, 535 flow [2024-11-10 22:03:18,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 22:03:18,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 22:03:18,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 187 transitions. [2024-11-10 22:03:18,573 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7056603773584905 [2024-11-10 22:03:18,573 INFO L175 Difference]: Start difference. First operand has 76 places, 60 transitions, 253 flow. Second operand 5 states and 187 transitions. [2024-11-10 22:03:18,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 98 transitions, 535 flow [2024-11-10 22:03:18,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 98 transitions, 521 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-10 22:03:18,579 INFO L231 Difference]: Finished difference. Result has 77 places, 62 transitions, 275 flow [2024-11-10 22:03:18,579 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=241, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=275, PETRI_PLACES=77, PETRI_TRANSITIONS=62} [2024-11-10 22:03:18,580 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 25 predicate places. [2024-11-10 22:03:18,580 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 62 transitions, 275 flow [2024-11-10 22:03:18,581 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:03:18,581 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:03:18,581 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:03:18,581 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-10 22:03:18,581 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-10 22:03:18,582 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:03:18,582 INFO L85 PathProgramCache]: Analyzing trace with hash -864154063, now seen corresponding path program 1 times [2024-11-10 22:03:18,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:03:18,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121306374] [2024-11-10 22:03:18,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:03:18,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:03:18,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:03:18,640 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:03:18,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:03:18,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121306374] [2024-11-10 22:03:18,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121306374] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:03:18,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1664610967] [2024-11-10 22:03:18,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:03:18,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:03:18,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:03:18,644 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) [2024-11-10 22:03:18,649 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-10 22:03:18,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:03:18,711 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-10 22:03:18,715 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:03:18,848 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:03:18,848 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 22:03:18,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1664610967] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:03:18,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 22:03:18,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 4 [2024-11-10 22:03:18,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178262047] [2024-11-10 22:03:18,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:03:18,851 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:03:18,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:03:18,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:03:18,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-10 22:03:18,861 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 53 [2024-11-10 22:03:18,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 62 transitions, 275 flow. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 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) [2024-11-10 22:03:18,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:03:18,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 53 [2024-11-10 22:03:18,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:03:19,159 INFO L124 PetriNetUnfolderBase]: 1235/2790 cut-off events. [2024-11-10 22:03:19,159 INFO L125 PetriNetUnfolderBase]: For 3989/4333 co-relation queries the response was YES. [2024-11-10 22:03:19,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7685 conditions, 2790 events. 1235/2790 cut-off events. For 3989/4333 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 21767 event pairs, 187 based on Foata normal form. 191/2948 useless extension candidates. Maximal degree in co-relation 7651. Up to 1444 conditions per place. [2024-11-10 22:03:19,184 INFO L140 encePairwiseOnDemand]: 50/53 looper letters, 57 selfloop transitions, 2 changer transitions 0/83 dead transitions. [2024-11-10 22:03:19,184 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 83 transitions, 521 flow [2024-11-10 22:03:19,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:03:19,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:03:19,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 135 transitions. [2024-11-10 22:03:19,185 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6367924528301887 [2024-11-10 22:03:19,185 INFO L175 Difference]: Start difference. First operand has 77 places, 62 transitions, 275 flow. Second operand 4 states and 135 transitions. [2024-11-10 22:03:19,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 83 transitions, 521 flow [2024-11-10 22:03:19,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 83 transitions, 501 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-11-10 22:03:19,191 INFO L231 Difference]: Finished difference. Result has 77 places, 61 transitions, 264 flow [2024-11-10 22:03:19,192 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=264, PETRI_PLACES=77, PETRI_TRANSITIONS=61} [2024-11-10 22:03:19,193 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 25 predicate places. [2024-11-10 22:03:19,193 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 61 transitions, 264 flow [2024-11-10 22:03:19,194 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 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) [2024-11-10 22:03:19,194 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:03:19,194 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:03:19,212 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-10 22:03:19,398 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,SelfDestructingSolverStorable9 [2024-11-10 22:03:19,399 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-10 22:03:19,399 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:03:19,399 INFO L85 PathProgramCache]: Analyzing trace with hash -1531728658, now seen corresponding path program 1 times [2024-11-10 22:03:19,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:03:19,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332856978] [2024-11-10 22:03:19,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:03:19,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:03:19,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:03:19,467 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:03:19,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:03:19,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332856978] [2024-11-10 22:03:19,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332856978] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:03:19,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1799753991] [2024-11-10 22:03:19,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:03:19,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:03:19,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:03:19,471 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) [2024-11-10 22:03:19,473 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-10 22:03:19,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:03:19,532 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 22:03:19,533 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:03:19,574 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:03:19,575 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 22:03:19,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1799753991] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:03:19,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 22:03:19,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-10 22:03:19,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761126296] [2024-11-10 22:03:19,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:03:19,575 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 22:03:19,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:03:19,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 22:03:19,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-10 22:03:19,592 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 53 [2024-11-10 22:03:19,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 61 transitions, 264 flow. Second operand has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 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) [2024-11-10 22:03:19,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:03:19,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 53 [2024-11-10 22:03:19,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:03:19,988 INFO L124 PetriNetUnfolderBase]: 1837/3355 cut-off events. [2024-11-10 22:03:19,988 INFO L125 PetriNetUnfolderBase]: For 5060/5552 co-relation queries the response was YES. [2024-11-10 22:03:19,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10051 conditions, 3355 events. 1837/3355 cut-off events. For 5060/5552 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 23327 event pairs, 375 based on Foata normal form. 133/3370 useless extension candidates. Maximal degree in co-relation 10017. Up to 1466 conditions per place. [2024-11-10 22:03:20,021 INFO L140 encePairwiseOnDemand]: 49/53 looper letters, 91 selfloop transitions, 5 changer transitions 0/115 dead transitions. [2024-11-10 22:03:20,022 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 115 transitions, 693 flow [2024-11-10 22:03:20,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 22:03:20,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 22:03:20,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 201 transitions. [2024-11-10 22:03:20,023 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6320754716981132 [2024-11-10 22:03:20,023 INFO L175 Difference]: Start difference. First operand has 77 places, 61 transitions, 264 flow. Second operand 6 states and 201 transitions. [2024-11-10 22:03:20,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 115 transitions, 693 flow [2024-11-10 22:03:20,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 115 transitions, 687 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 22:03:20,033 INFO L231 Difference]: Finished difference. Result has 79 places, 60 transitions, 267 flow [2024-11-10 22:03:20,034 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=267, PETRI_PLACES=79, PETRI_TRANSITIONS=60} [2024-11-10 22:03:20,035 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 27 predicate places. [2024-11-10 22:03:20,035 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 60 transitions, 267 flow [2024-11-10 22:03:20,035 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 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) [2024-11-10 22:03:20,035 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:03:20,036 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:03:20,053 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-10 22:03:20,236 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,SelfDestructingSolverStorable10 [2024-11-10 22:03:20,237 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-10 22:03:20,237 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:03:20,237 INFO L85 PathProgramCache]: Analyzing trace with hash -1018971992, now seen corresponding path program 1 times [2024-11-10 22:03:20,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:03:20,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727192112] [2024-11-10 22:03:20,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:03:20,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:03:20,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:03:20,326 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:03:20,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:03:20,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727192112] [2024-11-10 22:03:20,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727192112] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:03:20,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [424691086] [2024-11-10 22:03:20,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:03:20,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:03:20,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:03:20,329 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) [2024-11-10 22:03:20,330 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-10 22:03:20,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:03:20,389 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-10 22:03:20,390 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:03:20,464 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:03:20,464 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:03:20,517 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:03:20,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [424691086] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:03:20,518 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:03:20,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2024-11-10 22:03:20,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113174623] [2024-11-10 22:03:20,518 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:03:20,518 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-10 22:03:20,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:03:20,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-10 22:03:20,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2024-11-10 22:03:20,530 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 53 [2024-11-10 22:03:20,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 60 transitions, 267 flow. Second operand has 8 states, 8 states have (on average 27.125) internal successors, (217), 8 states have internal predecessors, (217), 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) [2024-11-10 22:03:20,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:03:20,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 53 [2024-11-10 22:03:20,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:03:21,327 INFO L124 PetriNetUnfolderBase]: 3515/7488 cut-off events. [2024-11-10 22:03:21,328 INFO L125 PetriNetUnfolderBase]: For 11263/12014 co-relation queries the response was YES. [2024-11-10 22:03:21,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20802 conditions, 7488 events. 3515/7488 cut-off events. For 11263/12014 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 64597 event pairs, 187 based on Foata normal form. 174/7553 useless extension candidates. Maximal degree in co-relation 20768. Up to 1445 conditions per place. [2024-11-10 22:03:21,465 INFO L140 encePairwiseOnDemand]: 50/53 looper letters, 135 selfloop transitions, 5 changer transitions 0/162 dead transitions. [2024-11-10 22:03:21,465 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 162 transitions, 1093 flow [2024-11-10 22:03:21,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 22:03:21,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 22:03:21,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 231 transitions. [2024-11-10 22:03:21,468 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7264150943396226 [2024-11-10 22:03:21,468 INFO L175 Difference]: Start difference. First operand has 79 places, 60 transitions, 267 flow. Second operand 6 states and 231 transitions. [2024-11-10 22:03:21,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 162 transitions, 1093 flow [2024-11-10 22:03:21,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 162 transitions, 1084 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-10 22:03:21,477 INFO L231 Difference]: Finished difference. Result has 84 places, 63 transitions, 298 flow [2024-11-10 22:03:21,477 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=298, PETRI_PLACES=84, PETRI_TRANSITIONS=63} [2024-11-10 22:03:21,478 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 32 predicate places. [2024-11-10 22:03:21,479 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 63 transitions, 298 flow [2024-11-10 22:03:21,479 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 27.125) internal successors, (217), 8 states have internal predecessors, (217), 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) [2024-11-10 22:03:21,479 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:03:21,480 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:03:21,497 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-10 22:03:21,683 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:03:21,684 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-10 22:03:21,684 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:03:21,684 INFO L85 PathProgramCache]: Analyzing trace with hash -238947900, now seen corresponding path program 1 times [2024-11-10 22:03:21,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:03:21,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852012228] [2024-11-10 22:03:21,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:03:21,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:03:21,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:03:21,730 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 22:03:21,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:03:21,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852012228] [2024-11-10 22:03:21,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852012228] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:03:21,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:03:21,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:03:21,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9509889] [2024-11-10 22:03:21,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:03:21,732 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:03:21,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:03:21,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:03:21,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:03:21,741 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 53 [2024-11-10 22:03:21,741 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 63 transitions, 298 flow. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:03:21,741 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:03:21,741 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 53 [2024-11-10 22:03:21,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:03:22,795 INFO L124 PetriNetUnfolderBase]: 5489/9683 cut-off events. [2024-11-10 22:03:22,795 INFO L125 PetriNetUnfolderBase]: For 16145/17818 co-relation queries the response was YES. [2024-11-10 22:03:22,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29537 conditions, 9683 events. 5489/9683 cut-off events. For 16145/17818 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 74904 event pairs, 2581 based on Foata normal form. 452/9884 useless extension candidates. Maximal degree in co-relation 29500. Up to 4789 conditions per place. [2024-11-10 22:03:22,871 INFO L140 encePairwiseOnDemand]: 48/53 looper letters, 83 selfloop transitions, 6 changer transitions 0/107 dead transitions. [2024-11-10 22:03:22,872 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 107 transitions, 698 flow [2024-11-10 22:03:22,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:03:22,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:03:22,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 138 transitions. [2024-11-10 22:03:22,873 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6509433962264151 [2024-11-10 22:03:22,873 INFO L175 Difference]: Start difference. First operand has 84 places, 63 transitions, 298 flow. Second operand 4 states and 138 transitions. [2024-11-10 22:03:22,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 107 transitions, 698 flow [2024-11-10 22:03:22,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 107 transitions, 672 flow, removed 10 selfloop flow, removed 2 redundant places. [2024-11-10 22:03:22,891 INFO L231 Difference]: Finished difference. Result has 85 places, 63 transitions, 302 flow [2024-11-10 22:03:22,891 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=302, PETRI_PLACES=85, PETRI_TRANSITIONS=63} [2024-11-10 22:03:22,892 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 33 predicate places. [2024-11-10 22:03:22,892 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 63 transitions, 302 flow [2024-11-10 22:03:22,892 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:03:22,892 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:03:22,892 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:03:22,893 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-10 22:03:22,893 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-10 22:03:22,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:03:22,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1523360417, now seen corresponding path program 1 times [2024-11-10 22:03:22,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:03:22,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184609181] [2024-11-10 22:03:22,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:03:22,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:03:22,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:03:22,954 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:03:22,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:03:22,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184609181] [2024-11-10 22:03:22,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184609181] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:03:22,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1332603565] [2024-11-10 22:03:22,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:03:22,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:03:22,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:03:22,957 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) [2024-11-10 22:03:22,958 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-10 22:03:23,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:03:23,015 INFO L255 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 22:03:23,016 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:03:23,043 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:03:23,043 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 22:03:23,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1332603565] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:03:23,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 22:03:23,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-10 22:03:23,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91762007] [2024-11-10 22:03:23,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:03:23,044 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 22:03:23,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:03:23,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 22:03:23,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-10 22:03:23,056 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 53 [2024-11-10 22:03:23,056 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 63 transitions, 302 flow. Second operand has 6 states, 6 states have (on average 24.0) internal successors, (144), 6 states have internal predecessors, (144), 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) [2024-11-10 22:03:23,056 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:03:23,056 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 53 [2024-11-10 22:03:23,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:03:23,879 INFO L124 PetriNetUnfolderBase]: 4427/8158 cut-off events. [2024-11-10 22:03:23,879 INFO L125 PetriNetUnfolderBase]: For 16976/17692 co-relation queries the response was YES. [2024-11-10 22:03:23,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24824 conditions, 8158 events. 4427/8158 cut-off events. For 16976/17692 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 64137 event pairs, 187 based on Foata normal form. 450/8347 useless extension candidates. Maximal degree in co-relation 24786. Up to 4560 conditions per place. [2024-11-10 22:03:23,943 INFO L140 encePairwiseOnDemand]: 49/53 looper letters, 100 selfloop transitions, 8 changer transitions 0/128 dead transitions. [2024-11-10 22:03:23,943 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 128 transitions, 901 flow [2024-11-10 22:03:23,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 22:03:23,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 22:03:23,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 198 transitions. [2024-11-10 22:03:23,945 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6226415094339622 [2024-11-10 22:03:23,945 INFO L175 Difference]: Start difference. First operand has 85 places, 63 transitions, 302 flow. Second operand 6 states and 198 transitions. [2024-11-10 22:03:23,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 128 transitions, 901 flow [2024-11-10 22:03:23,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 128 transitions, 887 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 22:03:23,963 INFO L231 Difference]: Finished difference. Result has 87 places, 62 transitions, 306 flow [2024-11-10 22:03:23,963 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=306, PETRI_PLACES=87, PETRI_TRANSITIONS=62} [2024-11-10 22:03:23,964 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 35 predicate places. [2024-11-10 22:03:23,964 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 62 transitions, 306 flow [2024-11-10 22:03:23,964 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.0) internal successors, (144), 6 states have internal predecessors, (144), 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) [2024-11-10 22:03:23,965 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:03:23,965 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:03:23,983 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-10 22:03:24,165 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:03:24,166 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-10 22:03:24,166 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:03:24,166 INFO L85 PathProgramCache]: Analyzing trace with hash -1241379951, now seen corresponding path program 1 times [2024-11-10 22:03:24,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:03:24,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516498794] [2024-11-10 22:03:24,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:03:24,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:03:24,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:03:24,243 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:03:24,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:03:24,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516498794] [2024-11-10 22:03:24,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516498794] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:03:24,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [971117560] [2024-11-10 22:03:24,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:03:24,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:03:24,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:03:24,246 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) [2024-11-10 22:03:24,248 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-10 22:03:24,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:03:24,306 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 22:03:24,308 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:03:24,340 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:03:24,341 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 22:03:24,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [971117560] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:03:24,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 22:03:24,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-10 22:03:24,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636786138] [2024-11-10 22:03:24,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:03:24,342 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 22:03:24,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:03:24,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 22:03:24,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-10 22:03:24,359 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 53 [2024-11-10 22:03:24,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 62 transitions, 306 flow. Second operand has 6 states, 6 states have (on average 23.333333333333332) internal successors, (140), 6 states have internal predecessors, (140), 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) [2024-11-10 22:03:24,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:03:24,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 53 [2024-11-10 22:03:24,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:03:25,153 INFO L124 PetriNetUnfolderBase]: 4991/8868 cut-off events. [2024-11-10 22:03:25,154 INFO L125 PetriNetUnfolderBase]: For 17348/17719 co-relation queries the response was YES. [2024-11-10 22:03:25,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27871 conditions, 8868 events. 4991/8868 cut-off events. For 17348/17719 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 68817 event pairs, 1021 based on Foata normal form. 198/8671 useless extension candidates. Maximal degree in co-relation 27832. Up to 3938 conditions per place. [2024-11-10 22:03:25,211 INFO L140 encePairwiseOnDemand]: 49/53 looper letters, 97 selfloop transitions, 5 changer transitions 0/119 dead transitions. [2024-11-10 22:03:25,211 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 119 transitions, 837 flow [2024-11-10 22:03:25,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 22:03:25,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 22:03:25,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 195 transitions. [2024-11-10 22:03:25,213 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6132075471698113 [2024-11-10 22:03:25,213 INFO L175 Difference]: Start difference. First operand has 87 places, 62 transitions, 306 flow. Second operand 6 states and 195 transitions. [2024-11-10 22:03:25,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 119 transitions, 837 flow [2024-11-10 22:03:25,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 119 transitions, 823 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-10 22:03:25,231 INFO L231 Difference]: Finished difference. Result has 88 places, 61 transitions, 307 flow [2024-11-10 22:03:25,232 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=297, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=307, PETRI_PLACES=88, PETRI_TRANSITIONS=61} [2024-11-10 22:03:25,232 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 36 predicate places. [2024-11-10 22:03:25,232 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 61 transitions, 307 flow [2024-11-10 22:03:25,232 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.333333333333332) internal successors, (140), 6 states have internal predecessors, (140), 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) [2024-11-10 22:03:25,233 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:03:25,233 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:03:25,250 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-10 22:03:25,433 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,SelfDestructingSolverStorable14 [2024-11-10 22:03:25,434 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-10 22:03:25,434 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:03:25,434 INFO L85 PathProgramCache]: Analyzing trace with hash 20467549, now seen corresponding path program 1 times [2024-11-10 22:03:25,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:03:25,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750586055] [2024-11-10 22:03:25,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:03:25,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:03:25,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:03:25,472 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 22:03:25,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:03:25,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750586055] [2024-11-10 22:03:25,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750586055] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:03:25,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:03:25,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:03:25,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317267357] [2024-11-10 22:03:25,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:03:25,477 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:03:25,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:03:25,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:03:25,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:03:25,483 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 53 [2024-11-10 22:03:25,483 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 61 transitions, 307 flow. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 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) [2024-11-10 22:03:25,487 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:03:25,487 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 53 [2024-11-10 22:03:25,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:03:26,078 INFO L124 PetriNetUnfolderBase]: 4731/8336 cut-off events. [2024-11-10 22:03:26,078 INFO L125 PetriNetUnfolderBase]: For 18507/18761 co-relation queries the response was YES. [2024-11-10 22:03:26,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26863 conditions, 8336 events. 4731/8336 cut-off events. For 18507/18761 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 63011 event pairs, 802 based on Foata normal form. 228/8486 useless extension candidates. Maximal degree in co-relation 26824. Up to 4561 conditions per place. [2024-11-10 22:03:26,140 INFO L140 encePairwiseOnDemand]: 48/53 looper letters, 78 selfloop transitions, 9 changer transitions 0/105 dead transitions. [2024-11-10 22:03:26,140 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 105 transitions, 741 flow [2024-11-10 22:03:26,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:03:26,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:03:26,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 137 transitions. [2024-11-10 22:03:26,141 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6462264150943396 [2024-11-10 22:03:26,141 INFO L175 Difference]: Start difference. First operand has 88 places, 61 transitions, 307 flow. Second operand 4 states and 137 transitions. [2024-11-10 22:03:26,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 105 transitions, 741 flow [2024-11-10 22:03:26,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 105 transitions, 730 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-11-10 22:03:26,172 INFO L231 Difference]: Finished difference. Result has 87 places, 61 transitions, 320 flow [2024-11-10 22:03:26,172 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=320, PETRI_PLACES=87, PETRI_TRANSITIONS=61} [2024-11-10 22:03:26,173 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 35 predicate places. [2024-11-10 22:03:26,173 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 61 transitions, 320 flow [2024-11-10 22:03:26,173 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 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) [2024-11-10 22:03:26,173 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:03:26,174 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:03:26,174 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-10 22:03:26,174 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-10 22:03:26,174 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:03:26,174 INFO L85 PathProgramCache]: Analyzing trace with hash 171927439, now seen corresponding path program 1 times [2024-11-10 22:03:26,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:03:26,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324288217] [2024-11-10 22:03:26,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:03:26,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:03:26,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:03:26,211 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 22:03:26,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:03:26,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324288217] [2024-11-10 22:03:26,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324288217] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:03:26,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:03:26,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:03:26,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031599865] [2024-11-10 22:03:26,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:03:26,213 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:03:26,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:03:26,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:03:26,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:03:26,220 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 53 [2024-11-10 22:03:26,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 61 transitions, 320 flow. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 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) [2024-11-10 22:03:26,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:03:26,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 53 [2024-11-10 22:03:26,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:03:26,841 INFO L124 PetriNetUnfolderBase]: 5475/9279 cut-off events. [2024-11-10 22:03:26,841 INFO L125 PetriNetUnfolderBase]: For 20142/20230 co-relation queries the response was YES. [2024-11-10 22:03:26,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30628 conditions, 9279 events. 5475/9279 cut-off events. For 20142/20230 co-relation queries the response was YES. Maximal size of possible extension queue 366. Compared 69918 event pairs, 2605 based on Foata normal form. 198/9229 useless extension candidates. Maximal degree in co-relation 30589. Up to 4793 conditions per place. [2024-11-10 22:03:26,904 INFO L140 encePairwiseOnDemand]: 48/53 looper letters, 79 selfloop transitions, 6 changer transitions 0/101 dead transitions. [2024-11-10 22:03:26,904 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 101 transitions, 734 flow [2024-11-10 22:03:26,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:03:26,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:03:26,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 134 transitions. [2024-11-10 22:03:26,906 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6320754716981132 [2024-11-10 22:03:26,907 INFO L175 Difference]: Start difference. First operand has 87 places, 61 transitions, 320 flow. Second operand 4 states and 134 transitions. [2024-11-10 22:03:26,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 101 transitions, 734 flow [2024-11-10 22:03:26,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 101 transitions, 692 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-11-10 22:03:26,931 INFO L231 Difference]: Finished difference. Result has 87 places, 61 transitions, 318 flow [2024-11-10 22:03:26,931 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=318, PETRI_PLACES=87, PETRI_TRANSITIONS=61} [2024-11-10 22:03:26,931 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 35 predicate places. [2024-11-10 22:03:26,931 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 61 transitions, 318 flow [2024-11-10 22:03:26,932 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 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) [2024-11-10 22:03:26,932 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:03:26,932 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:03:26,932 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-10 22:03:26,932 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-10 22:03:26,933 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:03:26,933 INFO L85 PathProgramCache]: Analyzing trace with hash -196956509, now seen corresponding path program 1 times [2024-11-10 22:03:26,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:03:26,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590012707] [2024-11-10 22:03:26,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:03:26,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:03:26,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:03:27,010 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:03:27,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:03:27,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590012707] [2024-11-10 22:03:27,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590012707] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:03:27,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1117913372] [2024-11-10 22:03:27,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:03:27,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:03:27,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:03:27,013 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) [2024-11-10 22:03:27,015 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-10 22:03:27,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:03:27,073 INFO L255 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 22:03:27,074 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:03:27,176 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:03:27,176 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:03:27,252 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:03:27,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1117913372] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:03:27,253 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:03:27,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2024-11-10 22:03:27,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968770374] [2024-11-10 22:03:27,253 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:03:27,253 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-10 22:03:27,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:03:27,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-10 22:03:27,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2024-11-10 22:03:27,255 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 53 [2024-11-10 22:03:27,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 61 transitions, 318 flow. Second operand has 14 states, 14 states have (on average 27.642857142857142) internal successors, (387), 14 states have internal predecessors, (387), 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) [2024-11-10 22:03:27,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:03:27,255 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 53 [2024-11-10 22:03:27,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:03:30,765 INFO L124 PetriNetUnfolderBase]: 13739/28619 cut-off events. [2024-11-10 22:03:30,765 INFO L125 PetriNetUnfolderBase]: For 68452/68755 co-relation queries the response was YES. [2024-11-10 22:03:30,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90937 conditions, 28619 events. 13739/28619 cut-off events. For 68452/68755 co-relation queries the response was YES. Maximal size of possible extension queue 940. Compared 282988 event pairs, 417 based on Foata normal form. 1762/30344 useless extension candidates. Maximal degree in co-relation 90897. Up to 5133 conditions per place. [2024-11-10 22:03:30,944 INFO L140 encePairwiseOnDemand]: 44/53 looper letters, 418 selfloop transitions, 71 changer transitions 0/510 dead transitions. [2024-11-10 22:03:30,944 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 510 transitions, 3786 flow [2024-11-10 22:03:30,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-10 22:03:30,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-11-10 22:03:30,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 1070 transitions. [2024-11-10 22:03:30,947 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7210242587601078 [2024-11-10 22:03:30,947 INFO L175 Difference]: Start difference. First operand has 87 places, 61 transitions, 318 flow. Second operand 28 states and 1070 transitions. [2024-11-10 22:03:30,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 510 transitions, 3786 flow [2024-11-10 22:03:31,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 510 transitions, 3748 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 22:03:31,015 INFO L231 Difference]: Finished difference. Result has 128 places, 133 transitions, 1178 flow [2024-11-10 22:03:31,015 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1178, PETRI_PLACES=128, PETRI_TRANSITIONS=133} [2024-11-10 22:03:31,016 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 76 predicate places. [2024-11-10 22:03:31,016 INFO L471 AbstractCegarLoop]: Abstraction has has 128 places, 133 transitions, 1178 flow [2024-11-10 22:03:31,016 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 27.642857142857142) internal successors, (387), 14 states have internal predecessors, (387), 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) [2024-11-10 22:03:31,017 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:03:31,017 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:03:31,034 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-10 22:03:31,217 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,SelfDestructingSolverStorable17 [2024-11-10 22:03:31,218 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-10 22:03:31,218 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:03:31,218 INFO L85 PathProgramCache]: Analyzing trace with hash 218461820, now seen corresponding path program 1 times [2024-11-10 22:03:31,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:03:31,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697943652] [2024-11-10 22:03:31,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:03:31,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:03:31,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:03:31,295 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:03:31,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:03:31,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697943652] [2024-11-10 22:03:31,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697943652] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:03:31,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2009673645] [2024-11-10 22:03:31,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:03:31,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:03:31,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:03:31,298 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) [2024-11-10 22:03:31,300 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-10 22:03:31,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:03:31,354 INFO L255 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 22:03:31,355 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:03:31,441 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:03:31,442 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 22:03:31,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2009673645] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:03:31,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 22:03:31,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2024-11-10 22:03:31,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966923952] [2024-11-10 22:03:31,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:03:31,442 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 22:03:31,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:03:31,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 22:03:31,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-10 22:03:31,443 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 53 [2024-11-10 22:03:31,443 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 133 transitions, 1178 flow. Second operand has 6 states, 6 states have (on average 27.166666666666668) internal successors, (163), 6 states have internal predecessors, (163), 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) [2024-11-10 22:03:31,444 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:03:31,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 53 [2024-11-10 22:03:31,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:03:34,482 INFO L124 PetriNetUnfolderBase]: 11473/24751 cut-off events. [2024-11-10 22:03:34,482 INFO L125 PetriNetUnfolderBase]: For 232706/232959 co-relation queries the response was YES. [2024-11-10 22:03:34,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96524 conditions, 24751 events. 11473/24751 cut-off events. For 232706/232959 co-relation queries the response was YES. Maximal size of possible extension queue 790. Compared 247636 event pairs, 2025 based on Foata normal form. 2024/26586 useless extension candidates. Maximal degree in co-relation 96465. Up to 8330 conditions per place. [2024-11-10 22:03:34,733 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 91 selfloop transitions, 27 changer transitions 0/139 dead transitions. [2024-11-10 22:03:34,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 139 transitions, 1389 flow [2024-11-10 22:03:34,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 22:03:34,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 22:03:34,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 206 transitions. [2024-11-10 22:03:34,734 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6477987421383647 [2024-11-10 22:03:34,735 INFO L175 Difference]: Start difference. First operand has 128 places, 133 transitions, 1178 flow. Second operand 6 states and 206 transitions. [2024-11-10 22:03:34,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 139 transitions, 1389 flow [2024-11-10 22:03:35,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 139 transitions, 1148 flow, removed 99 selfloop flow, removed 12 redundant places. [2024-11-10 22:03:35,288 INFO L231 Difference]: Finished difference. Result has 117 places, 101 transitions, 715 flow [2024-11-10 22:03:35,288 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=582, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=715, PETRI_PLACES=117, PETRI_TRANSITIONS=101} [2024-11-10 22:03:35,289 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 65 predicate places. [2024-11-10 22:03:35,289 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 101 transitions, 715 flow [2024-11-10 22:03:35,289 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.166666666666668) internal successors, (163), 6 states have internal predecessors, (163), 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) [2024-11-10 22:03:35,289 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:03:35,289 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:03:35,301 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-10 22:03:35,490 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:03:35,490 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-10 22:03:35,491 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:03:35,491 INFO L85 PathProgramCache]: Analyzing trace with hash -1715647968, now seen corresponding path program 1 times [2024-11-10 22:03:35,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:03:35,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750299769] [2024-11-10 22:03:35,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:03:35,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:03:35,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:03:35,616 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:03:35,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:03:35,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750299769] [2024-11-10 22:03:35,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750299769] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:03:35,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1018867590] [2024-11-10 22:03:35,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:03:35,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:03:35,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:03:35,619 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) [2024-11-10 22:03:35,724 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-10 22:03:35,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:03:35,782 INFO L255 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-10 22:03:35,783 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:03:35,909 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:03:35,909 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:03:36,023 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:03:36,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1018867590] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:03:36,024 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:03:36,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2024-11-10 22:03:36,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052983694] [2024-11-10 22:03:36,024 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:03:36,025 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-10 22:03:36,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:03:36,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-10 22:03:36,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272 [2024-11-10 22:03:36,026 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 53 [2024-11-10 22:03:36,028 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 101 transitions, 715 flow. Second operand has 17 states, 17 states have (on average 27.529411764705884) internal successors, (468), 17 states have internal predecessors, (468), 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) [2024-11-10 22:03:36,028 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:03:36,028 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 53 [2024-11-10 22:03:36,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:03:40,941 INFO L124 PetriNetUnfolderBase]: 16225/35787 cut-off events. [2024-11-10 22:03:40,941 INFO L125 PetriNetUnfolderBase]: For 306718/307081 co-relation queries the response was YES. [2024-11-10 22:03:41,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127896 conditions, 35787 events. 16225/35787 cut-off events. For 306718/307081 co-relation queries the response was YES. Maximal size of possible extension queue 1100. Compared 378209 event pairs, 659 based on Foata normal form. 1108/36792 useless extension candidates. Maximal degree in co-relation 127841. Up to 9039 conditions per place. [2024-11-10 22:03:41,234 INFO L140 encePairwiseOnDemand]: 46/53 looper letters, 322 selfloop transitions, 54 changer transitions 0/397 dead transitions. [2024-11-10 22:03:41,234 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 397 transitions, 3141 flow [2024-11-10 22:03:41,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-10 22:03:41,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-10 22:03:41,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 775 transitions. [2024-11-10 22:03:41,237 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6963162623539982 [2024-11-10 22:03:41,237 INFO L175 Difference]: Start difference. First operand has 117 places, 101 transitions, 715 flow. Second operand 21 states and 775 transitions. [2024-11-10 22:03:41,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 397 transitions, 3141 flow [2024-11-10 22:03:41,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 397 transitions, 3124 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-11-10 22:03:41,779 INFO L231 Difference]: Finished difference. Result has 139 places, 122 transitions, 1104 flow [2024-11-10 22:03:41,779 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=675, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1104, PETRI_PLACES=139, PETRI_TRANSITIONS=122} [2024-11-10 22:03:41,779 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 87 predicate places. [2024-11-10 22:03:41,780 INFO L471 AbstractCegarLoop]: Abstraction has has 139 places, 122 transitions, 1104 flow [2024-11-10 22:03:41,780 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 27.529411764705884) internal successors, (468), 17 states have internal predecessors, (468), 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) [2024-11-10 22:03:41,780 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:03:41,780 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:03:41,795 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-10 22:03:41,981 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:03:41,981 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-10 22:03:41,981 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:03:41,981 INFO L85 PathProgramCache]: Analyzing trace with hash -552312867, now seen corresponding path program 1 times [2024-11-10 22:03:41,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:03:41,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065748576] [2024-11-10 22:03:41,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:03:41,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:03:41,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:03:42,110 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:03:42,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:03:42,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065748576] [2024-11-10 22:03:42,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065748576] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:03:42,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [316147089] [2024-11-10 22:03:42,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:03:42,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:03:42,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:03:42,113 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) [2024-11-10 22:03:42,115 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-10 22:03:42,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:03:42,172 INFO L255 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-10 22:03:42,173 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:03:42,308 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:03:42,308 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:03:42,404 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:03:42,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [316147089] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:03:42,404 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:03:42,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 19 [2024-11-10 22:03:42,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419198015] [2024-11-10 22:03:42,404 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:03:42,405 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-10 22:03:42,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:03:42,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-10 22:03:42,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=265, Unknown=0, NotChecked=0, Total=380 [2024-11-10 22:03:42,406 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 53 [2024-11-10 22:03:42,407 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 122 transitions, 1104 flow. Second operand has 20 states, 20 states have (on average 27.45) internal successors, (549), 20 states have internal predecessors, (549), 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) [2024-11-10 22:03:42,407 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:03:42,407 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 53 [2024-11-10 22:03:42,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:03:52,751 INFO L124 PetriNetUnfolderBase]: 30701/69095 cut-off events. [2024-11-10 22:03:52,751 INFO L125 PetriNetUnfolderBase]: For 1102364/1103054 co-relation queries the response was YES. [2024-11-10 22:03:53,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 248729 conditions, 69095 events. 30701/69095 cut-off events. For 1102364/1103054 co-relation queries the response was YES. Maximal size of possible extension queue 1910. Compared 799901 event pairs, 1517 based on Foata normal form. 3652/72710 useless extension candidates. Maximal degree in co-relation 248668. Up to 8063 conditions per place. [2024-11-10 22:03:53,601 INFO L140 encePairwiseOnDemand]: 46/53 looper letters, 555 selfloop transitions, 118 changer transitions 0/694 dead transitions. [2024-11-10 22:03:53,601 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 694 transitions, 5913 flow [2024-11-10 22:03:53,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-10 22:03:53,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2024-11-10 22:03:53,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1378 transitions. [2024-11-10 22:03:53,606 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7027027027027027 [2024-11-10 22:03:53,606 INFO L175 Difference]: Start difference. First operand has 139 places, 122 transitions, 1104 flow. Second operand 37 states and 1378 transitions. [2024-11-10 22:03:53,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 694 transitions, 5913 flow [2024-11-10 22:03:56,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 694 transitions, 5771 flow, removed 50 selfloop flow, removed 13 redundant places. [2024-11-10 22:03:56,134 INFO L231 Difference]: Finished difference. Result has 176 places, 180 transitions, 2103 flow [2024-11-10 22:03:56,134 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=963, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=2103, PETRI_PLACES=176, PETRI_TRANSITIONS=180} [2024-11-10 22:03:56,134 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 124 predicate places. [2024-11-10 22:03:56,134 INFO L471 AbstractCegarLoop]: Abstraction has has 176 places, 180 transitions, 2103 flow [2024-11-10 22:03:56,135 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 27.45) internal successors, (549), 20 states have internal predecessors, (549), 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) [2024-11-10 22:03:56,135 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:03:56,135 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:03:56,147 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-10 22:03:56,335 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:03:56,335 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-10 22:03:56,336 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:03:56,336 INFO L85 PathProgramCache]: Analyzing trace with hash -25267541, now seen corresponding path program 2 times [2024-11-10 22:03:56,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:03:56,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81450886] [2024-11-10 22:03:56,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:03:56,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:03:56,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:03:56,487 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:03:56,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:03:56,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81450886] [2024-11-10 22:03:56,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81450886] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:03:56,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1646389191] [2024-11-10 22:03:56,488 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 22:03:56,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:03:56,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:03:56,490 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) [2024-11-10 22:03:56,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-10 22:03:56,554 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 22:03:56,554 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 22:03:56,555 INFO L255 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-10 22:03:56,556 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:03:56,711 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:03:56,711 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:03:56,829 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:03:56,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1646389191] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:03:56,830 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:03:56,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2024-11-10 22:03:56,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620262457] [2024-11-10 22:03:56,830 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:03:56,831 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-10 22:03:56,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:03:56,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-10 22:03:56,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=166, Unknown=0, NotChecked=0, Total=272 [2024-11-10 22:03:56,845 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 53 [2024-11-10 22:03:56,846 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 180 transitions, 2103 flow. Second operand has 17 states, 17 states have (on average 25.88235294117647) internal successors, (440), 17 states have internal predecessors, (440), 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) [2024-11-10 22:03:56,846 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:03:56,846 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 53 [2024-11-10 22:03:56,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand