./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- 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/nla-digbench-scaling/freire1_valuebound2.c -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 2c82dcc3d917c20926ea634368e9542e23b7ae4e7817b33542bbba01403d748d --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 15:19:46,765 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 15:19:46,820 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-03-17 15:19:46,825 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 15:19:46,825 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 15:19:46,840 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 15:19:46,841 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 15:19:46,841 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 15:19:46,841 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 15:19:46,841 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 15:19:46,841 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 15:19:46,841 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 15:19:46,842 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 15:19:46,842 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 15:19:46,842 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 15:19:46,842 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 15:19:46,842 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 15:19:46,842 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 15:19:46,842 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 15:19:46,842 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 15:19:46,842 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 15:19:46,842 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 15:19:46,842 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 15:19:46,842 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 15:19:46,842 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-03-17 15:19:46,844 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-17 15:19:46,844 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 15:19:46,844 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 15:19:46,844 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 15:19:46,844 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 15:19:46,844 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 15:19:46,844 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 15:19:46,844 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 15:19:46,845 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 15:19:46,845 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 15:19:46,845 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 15:19:46,845 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 15:19:46,845 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 15:19:46,845 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 15:19:46,845 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 15:19:46,845 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 15:19:46,845 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 15:19:46,845 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 15:19:46,845 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 15:19:46,845 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 15:19:46,846 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 -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2c82dcc3d917c20926ea634368e9542e23b7ae4e7817b33542bbba01403d748d [2025-03-17 15:19:47,057 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 15:19:47,064 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 15:19:47,066 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 15:19:47,067 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 15:19:47,067 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 15:19:47,068 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound2.c [2025-03-17 15:19:48,209 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9008c7d72/949dc5f006c34618b1d6362badddc070/FLAG53e8b4460 [2025-03-17 15:19:48,395 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 15:19:48,395 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound2.c [2025-03-17 15:19:48,400 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9008c7d72/949dc5f006c34618b1d6362badddc070/FLAG53e8b4460 [2025-03-17 15:19:48,410 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9008c7d72/949dc5f006c34618b1d6362badddc070 [2025-03-17 15:19:48,412 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 15:19:48,413 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 15:19:48,414 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 15:19:48,414 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 15:19:48,417 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 15:19:48,417 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 03:19:48" (1/1) ... [2025-03-17 15:19:48,418 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4479722 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:19:48, skipping insertion in model container [2025-03-17 15:19:48,418 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 03:19:48" (1/1) ... [2025-03-17 15:19:48,430 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 15:19:48,537 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 15:19:48,543 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 15:19:48,553 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 15:19:48,562 INFO L204 MainTranslator]: Completed translation [2025-03-17 15:19:48,563 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:19:48 WrapperNode [2025-03-17 15:19:48,563 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 15:19:48,564 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 15:19:48,564 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 15:19:48,564 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 15:19:48,569 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:19:48" (1/1) ... [2025-03-17 15:19:48,573 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:19:48" (1/1) ... [2025-03-17 15:19:48,582 INFO L138 Inliner]: procedures = 14, calls = 11, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 42 [2025-03-17 15:19:48,582 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 15:19:48,582 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 15:19:48,582 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 15:19:48,582 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 15:19:48,587 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:19:48" (1/1) ... [2025-03-17 15:19:48,587 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:19:48" (1/1) ... [2025-03-17 15:19:48,588 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:19:48" (1/1) ... [2025-03-17 15:19:48,594 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]. [2025-03-17 15:19:48,594 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:19:48" (1/1) ... [2025-03-17 15:19:48,594 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:19:48" (1/1) ... [2025-03-17 15:19:48,597 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:19:48" (1/1) ... [2025-03-17 15:19:48,597 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:19:48" (1/1) ... [2025-03-17 15:19:48,598 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:19:48" (1/1) ... [2025-03-17 15:19:48,599 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:19:48" (1/1) ... [2025-03-17 15:19:48,599 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 15:19:48,600 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 15:19:48,600 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 15:19:48,600 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 15:19:48,601 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:19:48" (1/1) ... [2025-03-17 15:19:48,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 15:19:48,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 15:19:48,625 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 15:19:48,630 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 15:19:48,647 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 15:19:48,647 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-17 15:19:48,647 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 15:19:48,647 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 15:19:48,647 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-03-17 15:19:48,647 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-03-17 15:19:48,687 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 15:19:48,689 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 15:19:48,774 INFO L? ?]: Removed 10 outVars from TransFormulas that were not future-live. [2025-03-17 15:19:48,775 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 15:19:48,780 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 15:19:48,780 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 15:19:48,780 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 03:19:48 BoogieIcfgContainer [2025-03-17 15:19:48,780 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 15:19:48,782 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 15:19:48,782 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 15:19:48,784 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 15:19:48,785 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 03:19:48" (1/3) ... [2025-03-17 15:19:48,785 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68e5038 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 03:19:48, skipping insertion in model container [2025-03-17 15:19:48,785 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:19:48" (2/3) ... [2025-03-17 15:19:48,785 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68e5038 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 03:19:48, skipping insertion in model container [2025-03-17 15:19:48,785 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 03:19:48" (3/3) ... [2025-03-17 15:19:48,786 INFO L128 eAbstractionObserver]: Analyzing ICFG freire1_valuebound2.c [2025-03-17 15:19:48,795 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 15:19:48,800 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG freire1_valuebound2.c that has 2 procedures, 25 locations, 1 initial locations, 1 loop locations, and 6 error locations. [2025-03-17 15:19:48,839 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 15:19:48,846 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;@7272827b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 15:19:48,847 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2025-03-17 15:19:48,849 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 21 states have internal predecessors, (25), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-17 15:19:48,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2025-03-17 15:19:48,852 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 15:19:48,853 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2025-03-17 15:19:48,853 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-03-17 15:19:48,856 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 15:19:48,856 INFO L85 PathProgramCache]: Analyzing trace with hash 1629533, now seen corresponding path program 1 times [2025-03-17 15:19:48,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 15:19:48,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414693219] [2025-03-17 15:19:48,862 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 15:19:48,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 15:19:48,912 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-03-17 15:19:48,923 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-03-17 15:19:48,924 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 15:19:48,924 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 15:19:48,954 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 15:19:48,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 15:19:48,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414693219] [2025-03-17 15:19:48,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414693219] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 15:19:48,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 15:19:48,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 15:19:48,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560125401] [2025-03-17 15:19:48,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 15:19:48,961 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-17 15:19:48,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 15:19:48,971 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-17 15:19:48,971 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-17 15:19:48,973 INFO L87 Difference]: Start difference. First operand has 25 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 21 states have internal predecessors, (25), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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 15:19:48,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 15:19:48,982 INFO L93 Difference]: Finished difference Result 46 states and 57 transitions. [2025-03-17 15:19:48,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-17 15:19:48,983 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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) Word has length 4 [2025-03-17 15:19:48,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 15:19:48,986 INFO L225 Difference]: With dead ends: 46 [2025-03-17 15:19:48,986 INFO L226 Difference]: Without dead ends: 19 [2025-03-17 15:19:48,987 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-17 15:19:48,989 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 15:19:48,989 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 15:19:48,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2025-03-17 15:19:49,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2025-03-17 15:19:49,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 16 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-17 15:19:49,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2025-03-17 15:19:49,011 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 4 [2025-03-17 15:19:49,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 15:19:49,011 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2025-03-17 15:19:49,011 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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 15:19:49,011 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2025-03-17 15:19:49,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2025-03-17 15:19:49,011 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 15:19:49,012 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2025-03-17 15:19:49,012 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-17 15:19:49,012 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-03-17 15:19:49,012 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 15:19:49,012 INFO L85 PathProgramCache]: Analyzing trace with hash 50545299, now seen corresponding path program 1 times [2025-03-17 15:19:49,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 15:19:49,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888826811] [2025-03-17 15:19:49,013 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 15:19:49,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 15:19:49,017 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-03-17 15:19:49,024 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-03-17 15:19:49,025 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 15:19:49,025 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-17 15:19:49,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1149078033] [2025-03-17 15:19:49,026 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 15:19:49,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 15:19:49,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 15:19:49,028 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) [2025-03-17 15:19:49,029 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-17 15:19:49,052 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-03-17 15:19:49,059 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-03-17 15:19:49,060 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 15:19:49,060 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 15:19:49,062 INFO L256 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-17 15:19:49,065 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 15:19:49,085 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 15:19:49,085 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 15:19:49,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 15:19:49,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888826811] [2025-03-17 15:19:49,086 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-17 15:19:49,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1149078033] [2025-03-17 15:19:49,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1149078033] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 15:19:49,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 15:19:49,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 15:19:49,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273903433] [2025-03-17 15:19:49,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 15:19:49,088 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 15:19:49,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 15:19:49,088 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 15:19:49,088 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 15:19:49,088 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 15:19:49,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 15:19:49,111 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2025-03-17 15:19:49,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 15:19:49,111 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) Word has length 5 [2025-03-17 15:19:49,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 15:19:49,112 INFO L225 Difference]: With dead ends: 31 [2025-03-17 15:19:49,112 INFO L226 Difference]: Without dead ends: 25 [2025-03-17 15:19:49,112 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 15:19:49,112 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 5 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 15:19:49,113 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 22 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 15:19:49,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2025-03-17 15:19:49,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2025-03-17 15:19:49,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 21 states have internal predecessors, (22), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-17 15:19:49,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2025-03-17 15:19:49,118 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 5 [2025-03-17 15:19:49,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 15:19:49,118 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2025-03-17 15:19:49,118 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 15:19:49,118 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2025-03-17 15:19:49,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-03-17 15:19:49,119 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 15:19:49,119 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 15:19:49,124 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-17 15:19:49,319 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 15:19:49,320 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-03-17 15:19:49,320 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 15:19:49,320 INFO L85 PathProgramCache]: Analyzing trace with hash 21374650, now seen corresponding path program 1 times [2025-03-17 15:19:49,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 15:19:49,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986427112] [2025-03-17 15:19:49,320 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 15:19:49,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 15:19:49,328 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-17 15:19:49,343 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-17 15:19:49,343 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 15:19:49,343 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-17 15:19:49,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [788580706] [2025-03-17 15:19:49,344 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 15:19:49,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 15:19:49,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 15:19:49,346 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) [2025-03-17 15:19:49,347 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-17 15:19:49,379 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-17 15:19:49,393 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-17 15:19:49,393 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 15:19:49,393 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 15:19:49,394 INFO L256 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-17 15:19:49,395 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 15:19:49,433 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 15:19:49,433 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 15:19:49,494 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 15:19:49,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 15:19:49,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986427112] [2025-03-17 15:19:49,494 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-17 15:19:49,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [788580706] [2025-03-17 15:19:49,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [788580706] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 15:19:49,494 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-17 15:19:49,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2025-03-17 15:19:49,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983554011] [2025-03-17 15:19:49,494 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-17 15:19:49,495 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 15:19:49,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 15:19:49,495 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 15:19:49,495 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2025-03-17 15:19:49,497 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-17 15:19:49,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 15:19:49,589 INFO L93 Difference]: Finished difference Result 44 states and 55 transitions. [2025-03-17 15:19:49,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 15:19:49,589 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 15 [2025-03-17 15:19:49,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 15:19:49,590 INFO L225 Difference]: With dead ends: 44 [2025-03-17 15:19:49,590 INFO L226 Difference]: Without dead ends: 34 [2025-03-17 15:19:49,590 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2025-03-17 15:19:49,591 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 17 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-17 15:19:49,591 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 44 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-17 15:19:49,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2025-03-17 15:19:49,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2025-03-17 15:19:49,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 28 states have (on average 1.0357142857142858) internal successors, (29), 28 states have internal predecessors, (29), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2025-03-17 15:19:49,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2025-03-17 15:19:49,596 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 15 [2025-03-17 15:19:49,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 15:19:49,597 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2025-03-17 15:19:49,597 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-17 15:19:49,597 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2025-03-17 15:19:49,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2025-03-17 15:19:49,598 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 15:19:49,598 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1] [2025-03-17 15:19:49,604 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-17 15:19:49,801 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,SelfDestructingSolverStorable2 [2025-03-17 15:19:49,802 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-03-17 15:19:49,802 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 15:19:49,802 INFO L85 PathProgramCache]: Analyzing trace with hash 47969967, now seen corresponding path program 2 times [2025-03-17 15:19:49,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 15:19:49,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984075145] [2025-03-17 15:19:49,803 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 15:19:49,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 15:19:49,814 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 45 statements into 2 equivalence classes. [2025-03-17 15:19:49,832 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 45 of 45 statements. [2025-03-17 15:19:49,833 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 15:19:49,833 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-17 15:19:49,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1326287121] [2025-03-17 15:19:49,834 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 15:19:49,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 15:19:49,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 15:19:49,838 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) [2025-03-17 15:19:49,839 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-17 15:19:49,863 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 45 statements into 2 equivalence classes. [2025-03-17 15:19:49,876 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 45 of 45 statements. [2025-03-17 15:19:49,876 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 15:19:49,876 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 15:19:49,877 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-03-17 15:19:49,878 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 15:19:49,949 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-03-17 15:19:49,949 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 15:19:50,086 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-03-17 15:19:50,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 15:19:50,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984075145] [2025-03-17 15:19:50,086 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-17 15:19:50,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1326287121] [2025-03-17 15:19:50,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1326287121] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 15:19:50,086 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-17 15:19:50,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2025-03-17 15:19:50,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156219305] [2025-03-17 15:19:50,087 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-17 15:19:50,087 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-17 15:19:50,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 15:19:50,087 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-17 15:19:50,088 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2025-03-17 15:19:50,088 INFO L87 Difference]: Start difference. First operand 34 states and 37 transitions. Second operand has 12 states, 11 states have (on average 4.636363636363637) internal successors, (51), 12 states have internal predecessors, (51), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2025-03-17 15:19:50,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 15:19:50,275 INFO L93 Difference]: Finished difference Result 71 states and 85 transitions. [2025-03-17 15:19:50,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-17 15:19:50,275 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.636363636363637) internal successors, (51), 12 states have internal predecessors, (51), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Word has length 45 [2025-03-17 15:19:50,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 15:19:50,276 INFO L225 Difference]: With dead ends: 71 [2025-03-17 15:19:50,276 INFO L226 Difference]: Without dead ends: 70 [2025-03-17 15:19:50,276 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=94, Invalid=146, Unknown=0, NotChecked=0, Total=240 [2025-03-17 15:19:50,277 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 21 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-17 15:19:50,277 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 109 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-17 15:19:50,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2025-03-17 15:19:50,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2025-03-17 15:19:50,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 58 states have (on average 1.0172413793103448) internal successors, (59), 58 states have internal predecessors, (59), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2025-03-17 15:19:50,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 79 transitions. [2025-03-17 15:19:50,285 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 79 transitions. Word has length 45 [2025-03-17 15:19:50,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 15:19:50,285 INFO L471 AbstractCegarLoop]: Abstraction has 70 states and 79 transitions. [2025-03-17 15:19:50,285 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.636363636363637) internal successors, (51), 12 states have internal predecessors, (51), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2025-03-17 15:19:50,285 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 79 transitions. [2025-03-17 15:19:50,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2025-03-17 15:19:50,287 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 15:19:50,287 INFO L218 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1] [2025-03-17 15:19:50,292 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-17 15:19:50,487 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 15:19:50,488 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-03-17 15:19:50,488 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 15:19:50,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1982523815, now seen corresponding path program 3 times [2025-03-17 15:19:50,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 15:19:50,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263320793] [2025-03-17 15:19:50,488 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-17 15:19:50,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 15:19:50,501 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 105 statements into 11 equivalence classes. [2025-03-17 15:19:50,562 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) and asserted 105 of 105 statements. [2025-03-17 15:19:50,562 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2025-03-17 15:19:50,562 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-17 15:19:50,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1789779853] [2025-03-17 15:19:50,564 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-17 15:19:50,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 15:19:50,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 15:19:50,566 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) [2025-03-17 15:19:50,568 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-17 15:19:50,608 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 105 statements into 11 equivalence classes. [2025-03-17 15:19:50,652 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) and asserted 105 of 105 statements. [2025-03-17 15:19:50,652 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2025-03-17 15:19:50,652 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 15:19:50,654 INFO L256 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 23 conjuncts are in the unsatisfiable core [2025-03-17 15:19:50,656 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 15:19:50,813 INFO L134 CoverageAnalysis]: Checked inductivity of 470 backedges. 0 proven. 290 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2025-03-17 15:19:50,813 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 15:19:51,195 INFO L134 CoverageAnalysis]: Checked inductivity of 470 backedges. 0 proven. 290 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2025-03-17 15:19:51,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 15:19:51,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263320793] [2025-03-17 15:19:51,195 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-17 15:19:51,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1789779853] [2025-03-17 15:19:51,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1789779853] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 15:19:51,195 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-17 15:19:51,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2025-03-17 15:19:51,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655407541] [2025-03-17 15:19:51,196 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-17 15:19:51,196 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-03-17 15:19:51,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 15:19:51,197 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-03-17 15:19:51,197 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2025-03-17 15:19:51,197 INFO L87 Difference]: Start difference. First operand 70 states and 79 transitions. Second operand has 24 states, 23 states have (on average 4.826086956521739) internal successors, (111), 24 states have internal predecessors, (111), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2025-03-17 15:19:51,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 15:19:51,887 INFO L93 Difference]: Finished difference Result 143 states and 175 transitions. [2025-03-17 15:19:51,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-03-17 15:19:51,888 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 4.826086956521739) internal successors, (111), 24 states have internal predecessors, (111), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Word has length 105 [2025-03-17 15:19:51,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 15:19:51,889 INFO L225 Difference]: With dead ends: 143 [2025-03-17 15:19:51,889 INFO L226 Difference]: Without dead ends: 142 [2025-03-17 15:19:51,890 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=406, Invalid=716, Unknown=0, NotChecked=0, Total=1122 [2025-03-17 15:19:51,890 INFO L435 NwaCegarLoop]: 40 mSDtfsCounter, 36 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 679 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-17 15:19:51,891 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 325 Invalid, 691 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 679 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-17 15:19:51,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2025-03-17 15:19:51,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2025-03-17 15:19:51,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 118 states have (on average 1.0084745762711864) internal successors, (119), 118 states have internal predecessors, (119), 22 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2025-03-17 15:19:51,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 163 transitions. [2025-03-17 15:19:51,903 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 163 transitions. Word has length 105 [2025-03-17 15:19:51,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 15:19:51,903 INFO L471 AbstractCegarLoop]: Abstraction has 142 states and 163 transitions. [2025-03-17 15:19:51,904 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 4.826086956521739) internal successors, (111), 24 states have internal predecessors, (111), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2025-03-17 15:19:51,904 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 163 transitions. [2025-03-17 15:19:51,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2025-03-17 15:19:51,906 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 15:19:51,906 INFO L218 NwaCegarLoop]: trace histogram [23, 22, 22, 22, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1] [2025-03-17 15:19:51,915 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-17 15:19:52,111 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 15:19:52,111 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-03-17 15:19:52,111 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 15:19:52,112 INFO L85 PathProgramCache]: Analyzing trace with hash -887745363, now seen corresponding path program 4 times [2025-03-17 15:19:52,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 15:19:52,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229722291] [2025-03-17 15:19:52,112 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-17 15:19:52,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 15:19:52,128 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 225 statements into 2 equivalence classes. [2025-03-17 15:19:52,198 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 225 of 225 statements. [2025-03-17 15:19:52,200 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-17 15:19:52,200 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-17 15:19:52,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1886801617] [2025-03-17 15:19:52,205 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-17 15:19:52,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 15:19:52,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 15:19:52,208 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) [2025-03-17 15:19:52,210 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-17 15:19:52,249 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 225 statements into 2 equivalence classes. [2025-03-17 15:19:52,297 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 225 of 225 statements. [2025-03-17 15:19:52,297 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-17 15:19:52,298 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 15:19:52,299 INFO L256 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 47 conjuncts are in the unsatisfiable core [2025-03-17 15:19:52,304 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 15:19:52,741 INFO L134 CoverageAnalysis]: Checked inductivity of 2354 backedges. 0 proven. 1430 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2025-03-17 15:19:52,742 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 15:19:53,908 INFO L134 CoverageAnalysis]: Checked inductivity of 2354 backedges. 0 proven. 1430 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2025-03-17 15:19:53,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 15:19:53,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229722291] [2025-03-17 15:19:53,909 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-17 15:19:53,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1886801617] [2025-03-17 15:19:53,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1886801617] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 15:19:53,909 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-17 15:19:53,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 47 [2025-03-17 15:19:53,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851631741] [2025-03-17 15:19:53,909 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-17 15:19:53,910 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2025-03-17 15:19:53,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 15:19:53,912 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2025-03-17 15:19:53,913 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=622, Invalid=1634, Unknown=0, NotChecked=0, Total=2256 [2025-03-17 15:19:53,913 INFO L87 Difference]: Start difference. First operand 142 states and 163 transitions. Second operand has 48 states, 47 states have (on average 4.914893617021277) internal successors, (231), 48 states have internal predecessors, (231), 44 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2025-03-17 15:19:56,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 15:19:56,504 INFO L93 Difference]: Finished difference Result 287 states and 355 transitions. [2025-03-17 15:19:56,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2025-03-17 15:19:56,504 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 4.914893617021277) internal successors, (231), 48 states have internal predecessors, (231), 44 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) Word has length 225 [2025-03-17 15:19:56,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 15:19:56,507 INFO L225 Difference]: With dead ends: 287 [2025-03-17 15:19:56,507 INFO L226 Difference]: Without dead ends: 286 [2025-03-17 15:19:56,509 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 470 GetRequests, 402 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1678, Invalid=3152, Unknown=0, NotChecked=0, Total=4830 [2025-03-17 15:19:56,510 INFO L435 NwaCegarLoop]: 76 mSDtfsCounter, 72 mSDsluCounter, 1176 mSDsCounter, 0 mSdLazyCounter, 2805 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 1252 SdHoareTripleChecker+Invalid, 2829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 2805 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-03-17 15:19:56,510 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 1252 Invalid, 2829 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 2805 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-03-17 15:19:56,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2025-03-17 15:19:56,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 286. [2025-03-17 15:19:56,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 238 states have (on average 1.004201680672269) internal successors, (239), 238 states have internal predecessors, (239), 46 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2025-03-17 15:19:56,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 331 transitions. [2025-03-17 15:19:56,532 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 331 transitions. Word has length 225 [2025-03-17 15:19:56,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 15:19:56,533 INFO L471 AbstractCegarLoop]: Abstraction has 286 states and 331 transitions. [2025-03-17 15:19:56,534 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 4.914893617021277) internal successors, (231), 48 states have internal predecessors, (231), 44 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2025-03-17 15:19:56,534 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 331 transitions. [2025-03-17 15:19:56,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 466 [2025-03-17 15:19:56,538 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 15:19:56,539 INFO L218 NwaCegarLoop]: trace histogram [47, 46, 46, 46, 46, 46, 46, 46, 46, 46, 1, 1, 1, 1] [2025-03-17 15:19:56,545 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-03-17 15:19:56,739 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 15:19:56,739 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-03-17 15:19:56,740 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 15:19:56,740 INFO L85 PathProgramCache]: Analyzing trace with hash 658050389, now seen corresponding path program 5 times [2025-03-17 15:19:56,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 15:19:56,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774344618] [2025-03-17 15:19:56,740 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-17 15:19:56,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 15:19:56,762 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 465 statements into 47 equivalence classes. [2025-03-17 15:19:56,982 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) and asserted 465 of 465 statements. [2025-03-17 15:19:56,982 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2025-03-17 15:19:56,982 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-17 15:19:56,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2089095174] [2025-03-17 15:19:56,988 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-17 15:19:56,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 15:19:56,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 15:19:56,993 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) [2025-03-17 15:19:56,994 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-17 15:19:57,051 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 465 statements into 47 equivalence classes. [2025-03-17 15:19:57,163 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) and asserted 465 of 465 statements. [2025-03-17 15:19:57,163 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2025-03-17 15:19:57,164 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 15:19:57,166 INFO L256 TraceCheckSpWp]: Trace formula consists of 766 conjuncts, 95 conjuncts are in the unsatisfiable core [2025-03-17 15:19:57,172 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 15:19:58,054 INFO L134 CoverageAnalysis]: Checked inductivity of 10442 backedges. 0 proven. 6302 refuted. 0 times theorem prover too weak. 4140 trivial. 0 not checked. [2025-03-17 15:19:58,054 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 15:20:01,222 INFO L134 CoverageAnalysis]: Checked inductivity of 10442 backedges. 0 proven. 6302 refuted. 0 times theorem prover too weak. 4140 trivial. 0 not checked. [2025-03-17 15:20:01,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 15:20:01,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774344618] [2025-03-17 15:20:01,223 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-17 15:20:01,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2089095174] [2025-03-17 15:20:01,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2089095174] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 15:20:01,223 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-17 15:20:01,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 95 [2025-03-17 15:20:01,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720200387] [2025-03-17 15:20:01,223 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-17 15:20:01,224 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2025-03-17 15:20:01,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 15:20:01,226 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2025-03-17 15:20:01,227 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=2398, Invalid=6722, Unknown=0, NotChecked=0, Total=9120 [2025-03-17 15:20:01,228 INFO L87 Difference]: Start difference. First operand 286 states and 331 transitions. Second operand has 96 states, 95 states have (on average 4.957894736842105) internal successors, (471), 96 states have internal predecessors, (471), 92 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 92 states have call predecessors, (92), 92 states have call successors, (92) [2025-03-17 15:20:12,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 15:20:12,683 INFO L93 Difference]: Finished difference Result 575 states and 715 transitions. [2025-03-17 15:20:12,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2025-03-17 15:20:12,684 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 95 states have (on average 4.957894736842105) internal successors, (471), 96 states have internal predecessors, (471), 92 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 92 states have call predecessors, (92), 92 states have call successors, (92) Word has length 465 [2025-03-17 15:20:12,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 15:20:12,687 INFO L225 Difference]: With dead ends: 575 [2025-03-17 15:20:12,687 INFO L226 Difference]: Without dead ends: 574 [2025-03-17 15:20:12,691 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 974 GetRequests, 834 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1035 ImplicationChecksByTransitivity, 11.5s TimeCoverageRelationStatistics Valid=6814, Invalid=13208, Unknown=0, NotChecked=0, Total=20022 [2025-03-17 15:20:12,691 INFO L435 NwaCegarLoop]: 148 mSDtfsCounter, 144 mSDsluCounter, 4656 mSDsCounter, 0 mSdLazyCounter, 11373 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 4804 SdHoareTripleChecker+Invalid, 11421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 11373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2025-03-17 15:20:12,691 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 4804 Invalid, 11421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 11373 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2025-03-17 15:20:12,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2025-03-17 15:20:12,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 574. [2025-03-17 15:20:12,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 574 states, 478 states have (on average 1.002092050209205) internal successors, (479), 478 states have internal predecessors, (479), 94 states have call successors, (94), 1 states have call predecessors, (94), 1 states have return successors, (94), 94 states have call predecessors, (94), 94 states have call successors, (94) [2025-03-17 15:20:12,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 667 transitions. [2025-03-17 15:20:12,724 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 667 transitions. Word has length 465 [2025-03-17 15:20:12,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 15:20:12,725 INFO L471 AbstractCegarLoop]: Abstraction has 574 states and 667 transitions. [2025-03-17 15:20:12,726 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 95 states have (on average 4.957894736842105) internal successors, (471), 96 states have internal predecessors, (471), 92 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 92 states have call predecessors, (92), 92 states have call successors, (92) [2025-03-17 15:20:12,726 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 667 transitions. [2025-03-17 15:20:12,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 946 [2025-03-17 15:20:12,743 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 15:20:12,744 INFO L218 NwaCegarLoop]: trace histogram [95, 94, 94, 94, 94, 94, 94, 94, 94, 94, 1, 1, 1, 1] [2025-03-17 15:20:12,751 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-03-17 15:20:12,944 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 15:20:12,944 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-03-17 15:20:12,945 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 15:20:12,945 INFO L85 PathProgramCache]: Analyzing trace with hash -483201371, now seen corresponding path program 6 times [2025-03-17 15:20:12,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 15:20:12,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128664586] [2025-03-17 15:20:12,945 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-17 15:20:12,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 15:20:12,981 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 945 statements into 95 equivalence classes. [2025-03-17 15:20:13,414 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 95 check-sat command(s) and asserted 945 of 945 statements. [2025-03-17 15:20:13,415 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 95 check-sat command(s) [2025-03-17 15:20:13,415 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-17 15:20:13,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1594532669] [2025-03-17 15:20:13,424 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-17 15:20:13,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 15:20:13,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 15:20:13,426 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) [2025-03-17 15:20:13,428 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-17 15:20:13,528 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 945 statements into 95 equivalence classes. [2025-03-17 15:20:14,208 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 95 check-sat command(s) and asserted 945 of 945 statements. [2025-03-17 15:20:14,208 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 95 check-sat command(s) [2025-03-17 15:20:14,208 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 15:20:14,213 INFO L256 TraceCheckSpWp]: Trace formula consists of 1534 conjuncts, 98 conjuncts are in the unsatisfiable core [2025-03-17 15:20:14,225 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 15:20:17,237 INFO L134 CoverageAnalysis]: Checked inductivity of 43898 backedges. 0 proven. 26414 refuted. 0 times theorem prover too weak. 17484 trivial. 0 not checked. [2025-03-17 15:20:17,238 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 15:20:17,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 15:20:17,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128664586] [2025-03-17 15:20:17,666 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-17 15:20:17,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1594532669] [2025-03-17 15:20:17,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1594532669] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 15:20:17,666 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2025-03-17 15:20:17,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97] total 97 [2025-03-17 15:20:17,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295000917] [2025-03-17 15:20:17,667 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2025-03-17 15:20:17,667 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2025-03-17 15:20:17,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 15:20:17,670 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2025-03-17 15:20:17,671 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=4771, Invalid=5531, Unknown=0, NotChecked=0, Total=10302 [2025-03-17 15:20:17,672 INFO L87 Difference]: Start difference. First operand 574 states and 667 transitions. Second operand has 98 states, 97 states have (on average 4.927835051546392) internal successors, (478), 98 states have internal predecessors, (478), 94 states have call successors, (94), 1 states have call predecessors, (94), 1 states have return successors, (94), 94 states have call predecessors, (94), 94 states have call successors, (94) [2025-03-17 15:20:22,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 15:20:22,499 INFO L93 Difference]: Finished difference Result 585 states and 680 transitions. [2025-03-17 15:20:22,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2025-03-17 15:20:22,500 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 97 states have (on average 4.927835051546392) internal successors, (478), 98 states have internal predecessors, (478), 94 states have call successors, (94), 1 states have call predecessors, (94), 1 states have return successors, (94), 94 states have call predecessors, (94), 94 states have call successors, (94) Word has length 945 [2025-03-17 15:20:22,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 15:20:22,503 INFO L225 Difference]: With dead ends: 585 [2025-03-17 15:20:22,504 INFO L226 Difference]: Without dead ends: 584 [2025-03-17 15:20:22,508 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1054 GetRequests, 860 SyntacticMatches, 0 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4751 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=14359, Invalid=23861, Unknown=0, NotChecked=0, Total=38220 [2025-03-17 15:20:22,509 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 379 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 484 mSolverCounterSat, 189 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 380 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 189 IncrementalHoareTripleChecker+Valid, 484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-17 15:20:22,509 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [380 Valid, 121 Invalid, 673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [189 Valid, 484 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-17 15:20:22,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2025-03-17 15:20:22,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 580. [2025-03-17 15:20:22,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 580 states, 483 states have (on average 1.0020703933747412) internal successors, (484), 483 states have internal predecessors, (484), 95 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 95 states have call predecessors, (95), 95 states have call successors, (95) [2025-03-17 15:20:22,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 674 transitions. [2025-03-17 15:20:22,549 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 674 transitions. Word has length 945 [2025-03-17 15:20:22,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 15:20:22,552 INFO L471 AbstractCegarLoop]: Abstraction has 580 states and 674 transitions. [2025-03-17 15:20:22,552 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 98 states, 97 states have (on average 4.927835051546392) internal successors, (478), 98 states have internal predecessors, (478), 94 states have call successors, (94), 1 states have call predecessors, (94), 1 states have return successors, (94), 94 states have call predecessors, (94), 94 states have call successors, (94) [2025-03-17 15:20:22,552 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 674 transitions. [2025-03-17 15:20:22,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 956 [2025-03-17 15:20:22,558 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 15:20:22,559 INFO L218 NwaCegarLoop]: trace histogram [96, 95, 95, 95, 95, 95, 95, 95, 95, 95, 1, 1, 1, 1] [2025-03-17 15:20:22,568 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-03-17 15:20:22,759 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 15:20:22,759 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-03-17 15:20:22,760 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 15:20:22,760 INFO L85 PathProgramCache]: Analyzing trace with hash -756849588, now seen corresponding path program 7 times [2025-03-17 15:20:22,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 15:20:22,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379599924] [2025-03-17 15:20:22,760 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-17 15:20:22,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 15:20:22,794 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 955 statements into 1 equivalence classes. [2025-03-17 15:20:22,915 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 955 of 955 statements. [2025-03-17 15:20:22,915 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 15:20:22,916 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-17 15:20:22,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [778170874] [2025-03-17 15:20:22,919 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-17 15:20:22,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 15:20:22,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 15:20:22,924 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) [2025-03-17 15:20:22,926 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-17 15:20:23,022 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 955 statements into 1 equivalence classes. [2025-03-17 15:20:23,162 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 955 of 955 statements. [2025-03-17 15:20:23,162 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 15:20:23,162 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 15:20:23,170 INFO L256 TraceCheckSpWp]: Trace formula consists of 1550 conjuncts, 193 conjuncts are in the unsatisfiable core [2025-03-17 15:20:23,182 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 15:20:25,905 INFO L134 CoverageAnalysis]: Checked inductivity of 44840 backedges. 0 proven. 26980 refuted. 0 times theorem prover too weak. 17860 trivial. 0 not checked. [2025-03-17 15:20:25,905 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 15:20:36,761 INFO L134 CoverageAnalysis]: Checked inductivity of 44840 backedges. 0 proven. 26980 refuted. 0 times theorem prover too weak. 17860 trivial. 0 not checked. [2025-03-17 15:20:36,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 15:20:36,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379599924] [2025-03-17 15:20:36,762 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-17 15:20:36,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [778170874] [2025-03-17 15:20:36,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [778170874] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 15:20:36,762 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-17 15:20:36,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97] total 193 [2025-03-17 15:20:36,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608930446] [2025-03-17 15:20:36,762 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-17 15:20:36,764 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 194 states [2025-03-17 15:20:36,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 15:20:36,767 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 194 interpolants. [2025-03-17 15:20:36,768 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9601, Invalid=27841, Unknown=0, NotChecked=0, Total=37442 [2025-03-17 15:20:36,769 INFO L87 Difference]: Start difference. First operand 580 states and 674 transitions. Second operand has 194 states, 193 states have (on average 4.979274611398964) internal successors, (961), 194 states have internal predecessors, (961), 190 states have call successors, (190), 1 states have call predecessors, (190), 1 states have return successors, (190), 190 states have call predecessors, (190), 190 states have call successors, (190)