./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted/NestedRecursion_1c.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/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_1.6.800.v20240513-1750.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/termination-crafted/NestedRecursion_1c.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-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 64bit --witnessprinter.graph.data.programhash f5c626d5135dc189cbc332c41f07b76804a58f47ee910790099695b0d83f1587 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 14:44:12,516 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 14:44:12,575 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2025-03-17 14:44:12,579 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 14:44:12,579 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 14:44:12,593 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 14:44:12,594 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 14:44:12,594 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 14:44:12,594 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 14:44:12,594 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 14:44:12,594 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 14:44:12,594 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 14:44:12,594 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 14:44:12,595 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 14:44:12,595 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 14:44:12,595 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 14:44:12,595 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 14:44:12,595 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 14:44:12,595 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 14:44:12,595 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 14:44:12,595 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 14:44:12,595 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 14:44:12,595 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-03-17 14:44:12,595 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-17 14:44:12,595 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 14:44:12,595 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 14:44:12,595 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 14:44:12,595 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 14:44:12,595 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 14:44:12,595 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 14:44:12,595 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 14:44:12,595 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 14:44:12,596 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 14:44:12,596 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 14:44:12,596 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 14:44:12,596 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 14:44:12,596 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 14:44:12,596 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 14:44:12,596 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 14:44:12,596 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 14:44:12,596 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 14:44:12,596 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 14:44:12,596 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f5c626d5135dc189cbc332c41f07b76804a58f47ee910790099695b0d83f1587 [2025-03-17 14:44:12,806 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 14:44:12,814 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 14:44:12,816 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 14:44:12,817 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 14:44:12,817 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 14:44:12,818 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted/NestedRecursion_1c.c [2025-03-17 14:44:13,913 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0beb5c6b3/e4e1ced1bfb141fc90f49bdf3f2b5d59/FLAG35fdd9a08 [2025-03-17 14:44:14,135 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 14:44:14,136 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted/NestedRecursion_1c.c [2025-03-17 14:44:14,150 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0beb5c6b3/e4e1ced1bfb141fc90f49bdf3f2b5d59/FLAG35fdd9a08 [2025-03-17 14:44:14,485 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0beb5c6b3/e4e1ced1bfb141fc90f49bdf3f2b5d59 [2025-03-17 14:44:14,487 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 14:44:14,488 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 14:44:14,489 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 14:44:14,489 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 14:44:14,492 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 14:44:14,492 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 02:44:14" (1/1) ... [2025-03-17 14:44:14,493 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29a6940a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:44:14, skipping insertion in model container [2025-03-17 14:44:14,493 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 02:44:14" (1/1) ... [2025-03-17 14:44:14,501 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 14:44:14,588 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 14:44:14,591 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 14:44:14,597 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 14:44:14,605 INFO L204 MainTranslator]: Completed translation [2025-03-17 14:44:14,605 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:44:14 WrapperNode [2025-03-17 14:44:14,605 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 14:44:14,606 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 14:44:14,606 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 14:44:14,606 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 14:44:14,610 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:44:14" (1/1) ... [2025-03-17 14:44:14,612 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:44:14" (1/1) ... [2025-03-17 14:44:14,620 INFO L138 Inliner]: procedures = 6, calls = 8, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 9 [2025-03-17 14:44:14,620 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 14:44:14,621 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 14:44:14,621 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 14:44:14,621 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 14:44:14,625 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:44:14" (1/1) ... [2025-03-17 14:44:14,625 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:44:14" (1/1) ... [2025-03-17 14:44:14,626 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:44:14" (1/1) ... [2025-03-17 14:44:14,629 INFO L175 MemorySlicer]: No memory access in input program. [2025-03-17 14:44:14,630 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:44:14" (1/1) ... [2025-03-17 14:44:14,630 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:44:14" (1/1) ... [2025-03-17 14:44:14,632 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:44:14" (1/1) ... [2025-03-17 14:44:14,635 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:44:14" (1/1) ... [2025-03-17 14:44:14,635 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:44:14" (1/1) ... [2025-03-17 14:44:14,636 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:44:14" (1/1) ... [2025-03-17 14:44:14,636 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 14:44:14,637 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 14:44:14,637 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 14:44:14,637 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 14:44:14,637 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:44:14" (1/1) ... [2025-03-17 14:44:14,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 14:44:14,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:44:14,661 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) [2025-03-17 14:44:14,664 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 [2025-03-17 14:44:14,681 INFO L130 BoogieDeclarations]: Found specification of procedure rec1 [2025-03-17 14:44:14,681 INFO L138 BoogieDeclarations]: Found implementation of procedure rec1 [2025-03-17 14:44:14,681 INFO L130 BoogieDeclarations]: Found specification of procedure rec2 [2025-03-17 14:44:14,681 INFO L138 BoogieDeclarations]: Found implementation of procedure rec2 [2025-03-17 14:44:14,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 14:44:14,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 14:44:14,713 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 14:44:14,715 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 14:44:14,794 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L14: havoc #t~ret0;havoc #t~ret1;havoc #t~ret2; [2025-03-17 14:44:14,818 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L20: havoc #t~ret3;havoc #t~ret4; [2025-03-17 14:44:14,837 INFO L? ?]: Removed 14 outVars from TransFormulas that were not future-live. [2025-03-17 14:44:14,839 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 14:44:14,847 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 14:44:14,848 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 14:44:14,848 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 02:44:14 BoogieIcfgContainer [2025-03-17 14:44:14,848 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 14:44:14,849 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 14:44:14,849 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 14:44:14,852 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 14:44:14,852 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 02:44:14" (1/3) ... [2025-03-17 14:44:14,853 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54db30c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 02:44:14, skipping insertion in model container [2025-03-17 14:44:14,853 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:44:14" (2/3) ... [2025-03-17 14:44:14,853 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54db30c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 02:44:14, skipping insertion in model container [2025-03-17 14:44:14,853 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 02:44:14" (3/3) ... [2025-03-17 14:44:14,854 INFO L128 eAbstractionObserver]: Analyzing ICFG NestedRecursion_1c.c [2025-03-17 14:44:14,863 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 14:44:14,864 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG NestedRecursion_1c.c that has 3 procedures, 43 locations, 1 initial locations, 0 loop locations, and 10 error locations. [2025-03-17 14:44:14,907 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 14:44:14,918 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;@4320a26, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 14:44:14,918 INFO L334 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2025-03-17 14:44:14,921 INFO L276 IsEmpty]: Start isEmpty. Operand has 43 states, 24 states have (on average 1.5) internal successors, (36), 34 states have internal predecessors, (36), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-03-17 14:44:14,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2025-03-17 14:44:14,925 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 14:44:14,925 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2025-03-17 14:44:14,925 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting rec2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2025-03-17 14:44:14,930 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:44:14,930 INFO L85 PathProgramCache]: Analyzing trace with hash 69063447, now seen corresponding path program 1 times [2025-03-17 14:44:14,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:44:14,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427679943] [2025-03-17 14:44:14,935 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:44:14,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:44:14,973 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-03-17 14:44:14,980 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-03-17 14:44:14,980 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:44:14,980 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:44:15,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:44:15,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:44:15,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427679943] [2025-03-17 14:44:15,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427679943] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:44:15,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:44:15,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 14:44:15,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163003627] [2025-03-17 14:44:15,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:44:15,030 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 14:44:15,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:44:15,043 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 14:44:15,043 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 14:44:15,045 INFO L87 Difference]: Start difference. First operand has 43 states, 24 states have (on average 1.5) internal successors, (36), 34 states have internal predecessors, (36), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:44:15,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 14:44:15,071 INFO L93 Difference]: Finished difference Result 45 states and 51 transitions. [2025-03-17 14:44:15,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 14:44:15,072 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2025-03-17 14:44:15,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 14:44:15,077 INFO L225 Difference]: With dead ends: 45 [2025-03-17 14:44:15,077 INFO L226 Difference]: Without dead ends: 41 [2025-03-17 14:44:15,079 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 14:44:15,082 INFO L435 NwaCegarLoop]: 47 mSDtfsCounter, 9 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 14:44:15,082 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 81 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 14:44:15,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2025-03-17 14:44:15,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2025-03-17 14:44:15,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 22 states have (on average 1.5) internal successors, (33), 31 states have internal predecessors, (33), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2025-03-17 14:44:15,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 44 transitions. [2025-03-17 14:44:15,106 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 44 transitions. Word has length 5 [2025-03-17 14:44:15,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 14:44:15,106 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 44 transitions. [2025-03-17 14:44:15,106 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:44:15,107 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 44 transitions. [2025-03-17 14:44:15,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2025-03-17 14:44:15,107 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 14:44:15,107 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2025-03-17 14:44:15,107 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-17 14:44:15,107 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting rec2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2025-03-17 14:44:15,107 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:44:15,107 INFO L85 PathProgramCache]: Analyzing trace with hash 2140966859, now seen corresponding path program 1 times [2025-03-17 14:44:15,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:44:15,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920751913] [2025-03-17 14:44:15,108 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:44:15,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:44:15,110 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-17 14:44:15,114 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-17 14:44:15,114 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:44:15,114 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:44:15,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:44:15,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:44:15,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920751913] [2025-03-17 14:44:15,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920751913] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:44:15,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:44:15,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 14:44:15,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803873714] [2025-03-17 14:44:15,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:44:15,147 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 14:44:15,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:44:15,147 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 14:44:15,147 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 14:44:15,148 INFO L87 Difference]: Start difference. First operand 39 states and 44 transitions. Second operand has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:44:15,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 14:44:15,196 INFO L93 Difference]: Finished difference Result 41 states and 46 transitions. [2025-03-17 14:44:15,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 14:44:15,196 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2025-03-17 14:44:15,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 14:44:15,197 INFO L225 Difference]: With dead ends: 41 [2025-03-17 14:44:15,197 INFO L226 Difference]: Without dead ends: 40 [2025-03-17 14:44:15,197 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-17 14:44:15,198 INFO L435 NwaCegarLoop]: 38 mSDtfsCounter, 20 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 14:44:15,198 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 130 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 14:44:15,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2025-03-17 14:44:15,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 38. [2025-03-17 14:44:15,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 30 states have internal predecessors, (32), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2025-03-17 14:44:15,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2025-03-17 14:44:15,203 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 6 [2025-03-17 14:44:15,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 14:44:15,203 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2025-03-17 14:44:15,203 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:44:15,203 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2025-03-17 14:44:15,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-03-17 14:44:15,205 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 14:44:15,205 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:44:15,205 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-17 14:44:15,205 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting rec1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2025-03-17 14:44:15,206 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:44:15,206 INFO L85 PathProgramCache]: Analyzing trace with hash -1863693335, now seen corresponding path program 1 times [2025-03-17 14:44:15,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:44:15,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632762009] [2025-03-17 14:44:15,206 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:44:15,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:44:15,210 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-17 14:44:15,216 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-17 14:44:15,216 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:44:15,216 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:44:15,245 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-17 14:44:15,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:44:15,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632762009] [2025-03-17 14:44:15,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632762009] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:44:15,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:44:15,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 14:44:15,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779418410] [2025-03-17 14:44:15,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:44:15,247 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 14:44:15,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:44:15,248 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 14:44:15,248 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 14:44:15,248 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-17 14:44:15,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 14:44:15,263 INFO L93 Difference]: Finished difference Result 40 states and 48 transitions. [2025-03-17 14:44:15,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 14:44:15,263 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2025-03-17 14:44:15,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 14:44:15,264 INFO L225 Difference]: With dead ends: 40 [2025-03-17 14:44:15,264 INFO L226 Difference]: Without dead ends: 39 [2025-03-17 14:44:15,264 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 14:44:15,265 INFO L435 NwaCegarLoop]: 44 mSDtfsCounter, 14 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 14:44:15,265 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 67 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 14:44:15,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2025-03-17 14:44:15,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 37. [2025-03-17 14:44:15,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 29 states have internal predecessors, (31), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2025-03-17 14:44:15,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 42 transitions. [2025-03-17 14:44:15,270 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 42 transitions. Word has length 16 [2025-03-17 14:44:15,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 14:44:15,270 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 42 transitions. [2025-03-17 14:44:15,270 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-17 14:44:15,270 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 42 transitions. [2025-03-17 14:44:15,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-03-17 14:44:15,271 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 14:44:15,271 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:44:15,271 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-17 14:44:15,271 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting rec1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2025-03-17 14:44:15,272 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:44:15,272 INFO L85 PathProgramCache]: Analyzing trace with hash -1939918552, now seen corresponding path program 1 times [2025-03-17 14:44:15,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:44:15,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135340017] [2025-03-17 14:44:15,272 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:44:15,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:44:15,278 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-17 14:44:15,284 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-17 14:44:15,285 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:44:15,285 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:44:15,350 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-17 14:44:15,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:44:15,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135340017] [2025-03-17 14:44:15,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135340017] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:44:15,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:44:15,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 14:44:15,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114234679] [2025-03-17 14:44:15,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:44:15,351 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 14:44:15,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:44:15,351 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 14:44:15,351 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-17 14:44:15,351 INFO L87 Difference]: Start difference. First operand 37 states and 42 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-17 14:44:15,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 14:44:15,401 INFO L93 Difference]: Finished difference Result 80 states and 91 transitions. [2025-03-17 14:44:15,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 14:44:15,401 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2025-03-17 14:44:15,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 14:44:15,402 INFO L225 Difference]: With dead ends: 80 [2025-03-17 14:44:15,402 INFO L226 Difference]: Without dead ends: 50 [2025-03-17 14:44:15,402 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-03-17 14:44:15,403 INFO L435 NwaCegarLoop]: 38 mSDtfsCounter, 7 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 14:44:15,403 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 181 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 14:44:15,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2025-03-17 14:44:15,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 45. [2025-03-17 14:44:15,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 27 states have (on average 1.3333333333333333) internal successors, (36), 35 states have internal predecessors, (36), 7 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2025-03-17 14:44:15,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 50 transitions. [2025-03-17 14:44:15,409 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 50 transitions. Word has length 17 [2025-03-17 14:44:15,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 14:44:15,409 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 50 transitions. [2025-03-17 14:44:15,409 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-17 14:44:15,409 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 50 transitions. [2025-03-17 14:44:15,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-03-17 14:44:15,410 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 14:44:15,410 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:44:15,410 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-17 14:44:15,410 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting rec2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2025-03-17 14:44:15,410 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:44:15,410 INFO L85 PathProgramCache]: Analyzing trace with hash -246662044, now seen corresponding path program 1 times [2025-03-17 14:44:15,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:44:15,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578689417] [2025-03-17 14:44:15,411 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:44:15,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:44:15,414 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-17 14:44:15,419 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-17 14:44:15,419 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:44:15,419 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:44:15,440 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-17 14:44:15,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:44:15,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578689417] [2025-03-17 14:44:15,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578689417] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:44:15,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:44:15,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 14:44:15,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451810465] [2025-03-17 14:44:15,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:44:15,441 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 14:44:15,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:44:15,441 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 14:44:15,441 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 14:44:15,441 INFO L87 Difference]: Start difference. First operand 45 states and 50 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-17 14:44:15,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 14:44:15,460 INFO L93 Difference]: Finished difference Result 51 states and 60 transitions. [2025-03-17 14:44:15,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 14:44:15,461 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2025-03-17 14:44:15,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 14:44:15,461 INFO L225 Difference]: With dead ends: 51 [2025-03-17 14:44:15,461 INFO L226 Difference]: Without dead ends: 50 [2025-03-17 14:44:15,461 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 14:44:15,462 INFO L435 NwaCegarLoop]: 38 mSDtfsCounter, 1 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 14:44:15,462 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 111 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 14:44:15,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2025-03-17 14:44:15,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2025-03-17 14:44:15,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 30 states have (on average 1.3) internal successors, (39), 38 states have internal predecessors, (39), 7 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (11), 7 states have call predecessors, (11), 6 states have call successors, (11) [2025-03-17 14:44:15,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 57 transitions. [2025-03-17 14:44:15,472 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 57 transitions. Word has length 19 [2025-03-17 14:44:15,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 14:44:15,472 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 57 transitions. [2025-03-17 14:44:15,473 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-17 14:44:15,473 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 57 transitions. [2025-03-17 14:44:15,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-03-17 14:44:15,473 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 14:44:15,473 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:44:15,473 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-17 14:44:15,475 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting rec2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2025-03-17 14:44:15,475 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:44:15,475 INFO L85 PathProgramCache]: Analyzing trace with hash 943411222, now seen corresponding path program 1 times [2025-03-17 14:44:15,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:44:15,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651528572] [2025-03-17 14:44:15,476 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:44:15,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:44:15,481 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-17 14:44:15,484 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-17 14:44:15,484 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:44:15,484 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:44:15,503 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-17 14:44:15,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:44:15,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651528572] [2025-03-17 14:44:15,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651528572] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:44:15,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:44:15,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 14:44:15,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714304906] [2025-03-17 14:44:15,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:44:15,505 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 14:44:15,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:44:15,508 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 14:44:15,508 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 14:44:15,508 INFO L87 Difference]: Start difference. First operand 49 states and 57 transitions. Second operand has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-17 14:44:15,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 14:44:15,518 INFO L93 Difference]: Finished difference Result 49 states and 57 transitions. [2025-03-17 14:44:15,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 14:44:15,519 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20 [2025-03-17 14:44:15,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 14:44:15,521 INFO L225 Difference]: With dead ends: 49 [2025-03-17 14:44:15,521 INFO L226 Difference]: Without dead ends: 48 [2025-03-17 14:44:15,521 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 14:44:15,521 INFO L435 NwaCegarLoop]: 38 mSDtfsCounter, 0 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 14:44:15,521 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 75 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 14:44:15,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2025-03-17 14:44:15,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2025-03-17 14:44:15,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 30 states have (on average 1.2666666666666666) internal successors, (38), 37 states have internal predecessors, (38), 7 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (11), 7 states have call predecessors, (11), 6 states have call successors, (11) [2025-03-17 14:44:15,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 56 transitions. [2025-03-17 14:44:15,527 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 56 transitions. Word has length 20 [2025-03-17 14:44:15,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 14:44:15,527 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 56 transitions. [2025-03-17 14:44:15,527 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-17 14:44:15,527 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 56 transitions. [2025-03-17 14:44:15,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2025-03-17 14:44:15,528 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 14:44:15,528 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:44:15,528 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-17 14:44:15,528 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting rec1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2025-03-17 14:44:15,528 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:44:15,528 INFO L85 PathProgramCache]: Analyzing trace with hash -1977169291, now seen corresponding path program 1 times [2025-03-17 14:44:15,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:44:15,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152245642] [2025-03-17 14:44:15,528 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:44:15,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:44:15,533 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-03-17 14:44:15,555 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-03-17 14:44:15,555 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:44:15,555 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:44:15,645 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-03-17 14:44:15,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:44:15,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152245642] [2025-03-17 14:44:15,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152245642] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:44:15,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:44:15,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-17 14:44:15,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904207702] [2025-03-17 14:44:15,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:44:15,645 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-17 14:44:15,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:44:15,646 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-17 14:44:15,646 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-03-17 14:44:15,646 INFO L87 Difference]: Start difference. First operand 48 states and 56 transitions. Second operand has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2025-03-17 14:44:15,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 14:44:15,726 INFO L93 Difference]: Finished difference Result 62 states and 72 transitions. [2025-03-17 14:44:15,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-17 14:44:15,726 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 38 [2025-03-17 14:44:15,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 14:44:15,727 INFO L225 Difference]: With dead ends: 62 [2025-03-17 14:44:15,727 INFO L226 Difference]: Without dead ends: 0 [2025-03-17 14:44:15,727 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2025-03-17 14:44:15,729 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 5 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 14:44:15,729 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 126 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 14:44:15,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2025-03-17 14:44:15,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2025-03-17 14:44:15,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:44:15,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2025-03-17 14:44:15,733 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 38 [2025-03-17 14:44:15,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 14:44:15,733 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-03-17 14:44:15,733 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2025-03-17 14:44:15,733 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2025-03-17 14:44:15,733 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2025-03-17 14:44:15,735 INFO L782 garLoopResultBuilder]: Registering result SAFE for location rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 10 remaining) [2025-03-17 14:44:15,735 INFO L782 garLoopResultBuilder]: Registering result SAFE for location rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 10 remaining) [2025-03-17 14:44:15,735 INFO L782 garLoopResultBuilder]: Registering result SAFE for location rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 10 remaining) [2025-03-17 14:44:15,735 INFO L782 garLoopResultBuilder]: Registering result SAFE for location rec1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 10 remaining) [2025-03-17 14:44:15,736 INFO L782 garLoopResultBuilder]: Registering result SAFE for location rec1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 10 remaining) [2025-03-17 14:44:15,736 INFO L782 garLoopResultBuilder]: Registering result SAFE for location rec1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 10 remaining) [2025-03-17 14:44:15,736 INFO L782 garLoopResultBuilder]: Registering result SAFE for location rec2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 10 remaining) [2025-03-17 14:44:15,736 INFO L782 garLoopResultBuilder]: Registering result SAFE for location rec2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 10 remaining) [2025-03-17 14:44:15,736 INFO L782 garLoopResultBuilder]: Registering result SAFE for location rec2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 10 remaining) [2025-03-17 14:44:15,736 INFO L782 garLoopResultBuilder]: Registering result SAFE for location rec2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 10 remaining) [2025-03-17 14:44:15,736 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-17 14:44:15,738 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:44:15,740 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2025-03-17 14:44:15,835 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-17 14:44:15,843 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.03 02:44:15 BoogieIcfgContainer [2025-03-17 14:44:15,843 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-17 14:44:15,843 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-17 14:44:15,843 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-17 14:44:15,843 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-17 14:44:15,844 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 02:44:14" (3/4) ... [2025-03-17 14:44:15,845 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-03-17 14:44:15,848 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure rec1 [2025-03-17 14:44:15,848 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure rec2 [2025-03-17 14:44:15,852 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2025-03-17 14:44:15,852 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2025-03-17 14:44:15,852 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2025-03-17 14:44:15,906 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-03-17 14:44:15,906 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-03-17 14:44:15,906 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-17 14:44:15,910 INFO L158 Benchmark]: Toolchain (without parser) took 1419.19ms. Allocated memory is still 142.6MB. Free memory was 107.5MB in the beginning and 76.4MB in the end (delta: 31.2MB). Peak memory consumption was 28.8MB. Max. memory is 16.1GB. [2025-03-17 14:44:15,911 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 201.3MB. Free memory is still 115.7MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-17 14:44:15,911 INFO L158 Benchmark]: CACSL2BoogieTranslator took 116.82ms. Allocated memory is still 142.6MB. Free memory was 107.5MB in the beginning and 97.4MB in the end (delta: 10.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-17 14:44:15,911 INFO L158 Benchmark]: Boogie Procedure Inliner took 14.30ms. Allocated memory is still 142.6MB. Free memory was 97.4MB in the beginning and 96.4MB in the end (delta: 951.8kB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-17 14:44:15,911 INFO L158 Benchmark]: Boogie Preprocessor took 15.58ms. Allocated memory is still 142.6MB. Free memory was 96.4MB in the beginning and 95.5MB in the end (delta: 965.7kB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-17 14:44:15,911 INFO L158 Benchmark]: IcfgBuilder took 211.31ms. Allocated memory is still 142.6MB. Free memory was 95.5MB in the beginning and 83.6MB in the end (delta: 11.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-17 14:44:15,911 INFO L158 Benchmark]: TraceAbstraction took 993.57ms. Allocated memory is still 142.6MB. Free memory was 82.7MB in the beginning and 81.7MB in the end (delta: 938.3kB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-17 14:44:15,911 INFO L158 Benchmark]: Witness Printer took 63.11ms. Allocated memory is still 142.6MB. Free memory was 81.7MB in the beginning and 76.4MB in the end (delta: 5.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-17 14:44:15,912 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 201.3MB. Free memory is still 115.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 116.82ms. Allocated memory is still 142.6MB. Free memory was 107.5MB in the beginning and 97.4MB in the end (delta: 10.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 14.30ms. Allocated memory is still 142.6MB. Free memory was 97.4MB in the beginning and 96.4MB in the end (delta: 951.8kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 15.58ms. Allocated memory is still 142.6MB. Free memory was 96.4MB in the beginning and 95.5MB in the end (delta: 965.7kB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 211.31ms. Allocated memory is still 142.6MB. Free memory was 95.5MB in the beginning and 83.6MB in the end (delta: 11.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 993.57ms. Allocated memory is still 142.6MB. Free memory was 82.7MB in the beginning and 81.7MB in the end (delta: 938.3kB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 63.11ms. Allocated memory is still 142.6MB. Free memory was 81.7MB in the beginning and 76.4MB in the end (delta: 5.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 14]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 14]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 14]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 14]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 14]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 14]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 43 locations, 54 edges, 10 error locations. Started 1 CEGAR loops. OverallTime: 0.8s, OverallIterations: 7, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 63 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 56 mSDsluCounter, 771 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 508 mSDsCounter, 7 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 137 IncrementalHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7 mSolverCounterUnsat, 263 mSDtfsCounter, 137 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=49occurred in iteration=5, InterpolantAutomatonStates: 34, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 12 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 121 NumberOfCodeBlocks, 121 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 114 ConstructedInterpolants, 0 QuantifiedInterpolants, 198 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 35/35 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 10 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-03-17 14:44:15,931 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE