./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 e2fb8bed 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-?-e2fb8be-m [2025-03-09 02:16:32,092 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-09 02:16:32,149 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-03-09 02:16:32,154 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-09 02:16:32,155 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-09 02:16:32,168 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-09 02:16:32,169 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-09 02:16:32,169 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-09 02:16:32,169 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-09 02:16:32,169 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-09 02:16:32,169 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-09 02:16:32,169 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-09 02:16:32,170 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-09 02:16:32,170 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-09 02:16:32,170 INFO L153 SettingsManager]: * Use SBE=true [2025-03-09 02:16:32,170 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-09 02:16:32,170 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-09 02:16:32,170 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-09 02:16:32,170 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-09 02:16:32,170 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-09 02:16:32,170 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-09 02:16:32,171 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-09 02:16:32,171 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-09 02:16:32,171 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-09 02:16:32,171 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-03-09 02:16:32,171 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-09 02:16:32,171 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-09 02:16:32,171 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-09 02:16:32,171 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-09 02:16:32,171 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-09 02:16:32,171 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-09 02:16:32,171 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-09 02:16:32,171 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-09 02:16:32,172 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-09 02:16:32,172 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 02:16:32,172 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-09 02:16:32,172 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-09 02:16:32,172 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-09 02:16:32,172 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-09 02:16:32,172 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-09 02:16:32,172 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-09 02:16:32,172 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-09 02:16:32,172 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-09 02:16:32,172 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-09 02:16:32,172 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-09 02:16:32,172 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 [2025-03-09 02:16:32,431 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-09 02:16:32,436 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-09 02:16:32,438 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-09 02:16:32,439 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-09 02:16:32,439 INFO L274 PluginConnector]: CDTParser initialized [2025-03-09 02:16:32,439 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound2.c [2025-03-09 02:16:33,714 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c4c00905/aebf516637484fae967febb2bf8707f1/FLAGfb78e3dd8 [2025-03-09 02:16:33,943 INFO L384 CDTParser]: Found 1 translation units. [2025-03-09 02:16:33,944 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound2.c [2025-03-09 02:16:33,949 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c4c00905/aebf516637484fae967febb2bf8707f1/FLAGfb78e3dd8 [2025-03-09 02:16:33,963 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c4c00905/aebf516637484fae967febb2bf8707f1 [2025-03-09 02:16:33,966 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-09 02:16:33,968 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-09 02:16:33,971 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-09 02:16:33,971 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-09 02:16:33,975 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-09 02:16:33,977 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 02:16:33" (1/1) ... [2025-03-09 02:16:33,980 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41d8359d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 02:16:33, skipping insertion in model container [2025-03-09 02:16:33,980 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 02:16:33" (1/1) ... [2025-03-09 02:16:33,996 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-09 02:16:34,157 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 02:16:34,166 INFO L200 MainTranslator]: Completed pre-run [2025-03-09 02:16:34,184 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 02:16:34,199 INFO L204 MainTranslator]: Completed translation [2025-03-09 02:16:34,200 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 02:16:34 WrapperNode [2025-03-09 02:16:34,201 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-09 02:16:34,201 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-09 02:16:34,202 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-09 02:16:34,202 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-09 02:16:34,207 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 02:16:34" (1/1) ... [2025-03-09 02:16:34,213 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 02:16:34" (1/1) ... [2025-03-09 02:16:34,227 INFO L138 Inliner]: procedures = 14, calls = 11, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 42 [2025-03-09 02:16:34,228 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-09 02:16:34,229 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-09 02:16:34,229 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-09 02:16:34,230 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-09 02:16:34,236 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 02:16:34" (1/1) ... [2025-03-09 02:16:34,236 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 02:16:34" (1/1) ... [2025-03-09 02:16:34,237 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 02:16:34" (1/1) ... [2025-03-09 02:16:34,253 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]. [2025-03-09 02:16:34,254 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 02:16:34" (1/1) ... [2025-03-09 02:16:34,254 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 02:16:34" (1/1) ... [2025-03-09 02:16:34,257 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 02:16:34" (1/1) ... [2025-03-09 02:16:34,261 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 02:16:34" (1/1) ... [2025-03-09 02:16:34,262 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 02:16:34" (1/1) ... [2025-03-09 02:16:34,262 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 02:16:34" (1/1) ... [2025-03-09 02:16:34,263 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-09 02:16:34,264 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-09 02:16:34,264 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-09 02:16:34,264 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-09 02:16:34,267 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 02:16:34" (1/1) ... [2025-03-09 02:16:34,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 02:16:34,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 02:16:34,297 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) [2025-03-09 02:16:34,299 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 [2025-03-09 02:16:34,316 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-09 02:16:34,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-09 02:16:34,316 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-09 02:16:34,316 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-09 02:16:34,316 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-03-09 02:16:34,316 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-03-09 02:16:34,360 INFO L256 CfgBuilder]: Building ICFG [2025-03-09 02:16:34,362 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-09 02:16:34,463 INFO L? ?]: Removed 11 outVars from TransFormulas that were not future-live. [2025-03-09 02:16:34,463 INFO L307 CfgBuilder]: Performing block encoding [2025-03-09 02:16:34,470 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-09 02:16:34,471 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-09 02:16:34,471 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 02:16:34 BoogieIcfgContainer [2025-03-09 02:16:34,471 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-09 02:16:34,473 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-09 02:16:34,473 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-09 02:16:34,477 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-09 02:16:34,477 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.03 02:16:33" (1/3) ... [2025-03-09 02:16:34,478 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30f6486f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 02:16:34, skipping insertion in model container [2025-03-09 02:16:34,478 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 02:16:34" (2/3) ... [2025-03-09 02:16:34,478 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30f6486f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 02:16:34, skipping insertion in model container [2025-03-09 02:16:34,478 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 02:16:34" (3/3) ... [2025-03-09 02:16:34,479 INFO L128 eAbstractionObserver]: Analyzing ICFG freire1_valuebound2.c [2025-03-09 02:16:34,492 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-09 02:16:34,493 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG freire1_valuebound2.c that has 2 procedures, 29 locations, 1 initial locations, 1 loop locations, and 6 error locations. [2025-03-09 02:16:34,532 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-09 02:16:34,541 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;@2797d8e1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-09 02:16:34,542 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2025-03-09 02:16:34,545 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 25 states have internal predecessors, (29), 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) [2025-03-09 02:16:34,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2025-03-09 02:16:34,548 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:16:34,549 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2025-03-09 02:16:34,549 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)] === [2025-03-09 02:16:34,552 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:16:34,552 INFO L85 PathProgramCache]: Analyzing trace with hash 53408277, now seen corresponding path program 1 times [2025-03-09 02:16:34,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:16:34,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487655720] [2025-03-09 02:16:34,560 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:16:34,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:16:34,612 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-03-09 02:16:34,625 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-03-09 02:16:34,625 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:16:34,625 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:16:34,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 02:16:34,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:16:34,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487655720] [2025-03-09 02:16:34,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487655720] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 02:16:34,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 02:16:34,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 02:16:34,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512619799] [2025-03-09 02:16:34,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 02:16:34,657 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-09 02:16:34,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:16:34,671 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-09 02:16:34,672 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-09 02:16:34,673 INFO L87 Difference]: Start difference. First operand has 29 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 25 states have internal predecessors, (29), 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 2.5) internal successors, (5), 2 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) [2025-03-09 02:16:34,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:16:34,687 INFO L93 Difference]: Finished difference Result 52 states and 63 transitions. [2025-03-09 02:16:34,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-09 02:16:34,688 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 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 [2025-03-09 02:16:34,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:16:34,691 INFO L225 Difference]: With dead ends: 52 [2025-03-09 02:16:34,692 INFO L226 Difference]: Without dead ends: 20 [2025-03-09 02:16:34,694 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 [2025-03-09 02:16:34,700 INFO L435 NwaCegarLoop]: 27 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, 27 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 [2025-03-09 02:16:34,700 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-09 02:16:34,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2025-03-09 02:16:34,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2025-03-09 02:16:34,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 17 states have internal predecessors, (18), 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) [2025-03-09 02:16:34,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2025-03-09 02:16:34,726 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 5 [2025-03-09 02:16:34,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:16:34,727 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2025-03-09 02:16:34,727 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 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) [2025-03-09 02:16:34,727 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2025-03-09 02:16:34,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2025-03-09 02:16:34,728 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:16:34,728 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2025-03-09 02:16:34,728 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-09 02:16:34,729 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)] === [2025-03-09 02:16:34,729 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:16:34,729 INFO L85 PathProgramCache]: Analyzing trace with hash 1655686365, now seen corresponding path program 1 times [2025-03-09 02:16:34,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:16:34,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165024528] [2025-03-09 02:16:34,730 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:16:34,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:16:34,736 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-09 02:16:34,743 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-09 02:16:34,743 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:16:34,744 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-09 02:16:34,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [607435751] [2025-03-09 02:16:34,746 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:16:34,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:16:34,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 02:16:34,752 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) [2025-03-09 02:16:34,764 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-09 02:16:34,807 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-09 02:16:34,814 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-09 02:16:34,815 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:16:34,815 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:16:34,817 INFO L256 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-09 02:16:34,821 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 02:16:34,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 02:16:34,847 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 02:16:34,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:16:34,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165024528] [2025-03-09 02:16:34,848 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-09 02:16:34,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [607435751] [2025-03-09 02:16:34,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [607435751] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 02:16:34,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 02:16:34,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 02:16:34,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074528035] [2025-03-09 02:16:34,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 02:16:34,849 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 02:16:34,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:16:34,850 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 02:16:34,850 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 02:16:34,850 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2025-03-09 02:16:34,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:16:34,892 INFO L93 Difference]: Finished difference Result 32 states and 33 transitions. [2025-03-09 02:16:34,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 02:16:34,893 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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 6 [2025-03-09 02:16:34,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:16:34,893 INFO L225 Difference]: With dead ends: 32 [2025-03-09 02:16:34,893 INFO L226 Difference]: Without dead ends: 26 [2025-03-09 02:16:34,893 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 02:16:34,894 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 5 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 24 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 [2025-03-09 02:16:34,895 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 24 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-09 02:16:34,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2025-03-09 02:16:34,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2025-03-09 02:16:34,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 22 states have internal predecessors, (23), 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) [2025-03-09 02:16:34,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2025-03-09 02:16:34,902 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 6 [2025-03-09 02:16:34,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:16:34,902 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2025-03-09 02:16:34,902 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2025-03-09 02:16:34,902 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2025-03-09 02:16:34,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-03-09 02:16:34,903 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:16:34,903 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 02:16:34,912 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-09 02:16:35,103 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 [2025-03-09 02:16:35,104 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)] === [2025-03-09 02:16:35,104 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:16:35,104 INFO L85 PathProgramCache]: Analyzing trace with hash -1440507807, now seen corresponding path program 1 times [2025-03-09 02:16:35,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:16:35,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648861522] [2025-03-09 02:16:35,105 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:16:35,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:16:35,110 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-09 02:16:35,123 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-09 02:16:35,125 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:16:35,125 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-09 02:16:35,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [684174304] [2025-03-09 02:16:35,126 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 02:16:35,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:16:35,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 02:16:35,131 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) [2025-03-09 02:16:35,133 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-09 02:16:35,159 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-09 02:16:35,172 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-09 02:16:35,172 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:16:35,172 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:16:35,172 INFO L256 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-09 02:16:35,174 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 02:16:35,222 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 02:16:35,222 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 02:16:35,282 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 02:16:35,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:16:35,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648861522] [2025-03-09 02:16:35,282 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-09 02:16:35,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [684174304] [2025-03-09 02:16:35,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [684174304] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 02:16:35,283 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-09 02:16:35,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2025-03-09 02:16:35,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951523529] [2025-03-09 02:16:35,283 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-09 02:16:35,283 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-09 02:16:35,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:16:35,286 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-09 02:16:35,286 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2025-03-09 02:16:35,286 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 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) [2025-03-09 02:16:35,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:16:35,371 INFO L93 Difference]: Finished difference Result 45 states and 56 transitions. [2025-03-09 02:16:35,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 02:16:35,371 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 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) Word has length 16 [2025-03-09 02:16:35,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:16:35,372 INFO L225 Difference]: With dead ends: 45 [2025-03-09 02:16:35,372 INFO L226 Difference]: Without dead ends: 35 [2025-03-09 02:16:35,372 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2025-03-09 02:16:35,372 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 22 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-09 02:16:35,373 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 42 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-09 02:16:35,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2025-03-09 02:16:35,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2025-03-09 02:16:35,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 29 states have (on average 1.0344827586206897) internal successors, (30), 29 states have internal predecessors, (30), 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) [2025-03-09 02:16:35,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2025-03-09 02:16:35,378 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 16 [2025-03-09 02:16:35,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:16:35,379 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2025-03-09 02:16:35,379 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 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) [2025-03-09 02:16:35,379 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2025-03-09 02:16:35,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2025-03-09 02:16:35,380 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:16:35,380 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1] [2025-03-09 02:16:35,388 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-09 02:16:35,584 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 [2025-03-09 02:16:35,584 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)] === [2025-03-09 02:16:35,585 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:16:35,585 INFO L85 PathProgramCache]: Analyzing trace with hash 92968173, now seen corresponding path program 2 times [2025-03-09 02:16:35,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:16:35,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916825466] [2025-03-09 02:16:35,585 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 02:16:35,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:16:35,595 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 46 statements into 2 equivalence classes. [2025-03-09 02:16:35,615 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 46 of 46 statements. [2025-03-09 02:16:35,617 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 02:16:35,617 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-09 02:16:35,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [535318022] [2025-03-09 02:16:35,621 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 02:16:35,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:16:35,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 02:16:35,623 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) [2025-03-09 02:16:35,624 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-09 02:16:35,658 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 46 statements into 2 equivalence classes. [2025-03-09 02:16:35,685 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 46 of 46 statements. [2025-03-09 02:16:35,685 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 02:16:35,685 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:16:35,686 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-03-09 02:16:35,688 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 02:16:35,789 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-03-09 02:16:35,790 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 02:16:35,946 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-03-09 02:16:35,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:16:35,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916825466] [2025-03-09 02:16:35,946 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-09 02:16:35,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [535318022] [2025-03-09 02:16:35,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [535318022] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 02:16:35,946 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-09 02:16:35,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2025-03-09 02:16:35,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313964160] [2025-03-09 02:16:35,947 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-09 02:16:35,947 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-09 02:16:35,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:16:35,948 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-09 02:16:35,948 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2025-03-09 02:16:35,949 INFO L87 Difference]: Start difference. First operand 35 states and 38 transitions. Second operand has 12 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 12 states have internal predecessors, (52), 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) [2025-03-09 02:16:36,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:16:36,177 INFO L93 Difference]: Finished difference Result 72 states and 86 transitions. [2025-03-09 02:16:36,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-09 02:16:36,178 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 12 states have internal predecessors, (52), 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 46 [2025-03-09 02:16:36,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:16:36,179 INFO L225 Difference]: With dead ends: 72 [2025-03-09 02:16:36,180 INFO L226 Difference]: Without dead ends: 71 [2025-03-09 02:16:36,180 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=94, Invalid=146, Unknown=0, NotChecked=0, Total=240 [2025-03-09 02:16:36,181 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 21 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-09 02:16:36,182 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 127 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-09 02:16:36,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2025-03-09 02:16:36,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2025-03-09 02:16:36,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 59 states have (on average 1.0169491525423728) internal successors, (60), 59 states have internal predecessors, (60), 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) [2025-03-09 02:16:36,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 80 transitions. [2025-03-09 02:16:36,198 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 80 transitions. Word has length 46 [2025-03-09 02:16:36,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:16:36,198 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 80 transitions. [2025-03-09 02:16:36,198 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 12 states have internal predecessors, (52), 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) [2025-03-09 02:16:36,198 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 80 transitions. [2025-03-09 02:16:36,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2025-03-09 02:16:36,202 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:16:36,202 INFO L218 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1] [2025-03-09 02:16:36,213 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-09 02:16:36,407 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 [2025-03-09 02:16:36,407 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)] === [2025-03-09 02:16:36,408 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:16:36,408 INFO L85 PathProgramCache]: Analyzing trace with hash 261543685, now seen corresponding path program 3 times [2025-03-09 02:16:36,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:16:36,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120820607] [2025-03-09 02:16:36,408 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-09 02:16:36,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:16:36,422 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 106 statements into 11 equivalence classes. [2025-03-09 02:16:36,475 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) and asserted 106 of 106 statements. [2025-03-09 02:16:36,476 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2025-03-09 02:16:36,476 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-09 02:16:36,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1633897905] [2025-03-09 02:16:36,477 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-09 02:16:36,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:16:36,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 02:16:36,479 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) [2025-03-09 02:16:36,481 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-09 02:16:36,519 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 106 statements into 11 equivalence classes. [2025-03-09 02:16:36,552 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) and asserted 106 of 106 statements. [2025-03-09 02:16:36,553 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2025-03-09 02:16:36,553 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:16:36,554 INFO L256 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 23 conjuncts are in the unsatisfiable core [2025-03-09 02:16:36,560 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 02:16:36,704 INFO L134 CoverageAnalysis]: Checked inductivity of 470 backedges. 0 proven. 290 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2025-03-09 02:16:36,704 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 02:16:37,188 INFO L134 CoverageAnalysis]: Checked inductivity of 470 backedges. 0 proven. 290 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2025-03-09 02:16:37,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:16:37,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120820607] [2025-03-09 02:16:37,189 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-09 02:16:37,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1633897905] [2025-03-09 02:16:37,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1633897905] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 02:16:37,190 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-09 02:16:37,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2025-03-09 02:16:37,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112835526] [2025-03-09 02:16:37,190 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-09 02:16:37,191 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-03-09 02:16:37,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:16:37,193 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-03-09 02:16:37,193 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2025-03-09 02:16:37,193 INFO L87 Difference]: Start difference. First operand 71 states and 80 transitions. Second operand has 24 states, 23 states have (on average 4.869565217391305) internal successors, (112), 24 states have internal predecessors, (112), 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) [2025-03-09 02:16:37,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:16:37,925 INFO L93 Difference]: Finished difference Result 144 states and 176 transitions. [2025-03-09 02:16:37,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-03-09 02:16:37,926 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 4.869565217391305) internal successors, (112), 24 states have internal predecessors, (112), 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 106 [2025-03-09 02:16:37,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:16:37,927 INFO L225 Difference]: With dead ends: 144 [2025-03-09 02:16:37,927 INFO L226 Difference]: Without dead ends: 143 [2025-03-09 02:16:37,928 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=406, Invalid=716, Unknown=0, NotChecked=0, Total=1122 [2025-03-09 02:16:37,928 INFO L435 NwaCegarLoop]: 41 mSDtfsCounter, 36 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 685 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-09 02:16:37,929 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 385 Invalid, 697 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 685 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-09 02:16:37,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2025-03-09 02:16:37,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2025-03-09 02:16:37,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 119 states have (on average 1.0084033613445378) internal successors, (120), 119 states have internal predecessors, (120), 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) [2025-03-09 02:16:37,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 164 transitions. [2025-03-09 02:16:37,949 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 164 transitions. Word has length 106 [2025-03-09 02:16:37,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:16:37,950 INFO L471 AbstractCegarLoop]: Abstraction has 143 states and 164 transitions. [2025-03-09 02:16:37,950 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 4.869565217391305) internal successors, (112), 24 states have internal predecessors, (112), 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) [2025-03-09 02:16:37,950 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 164 transitions. [2025-03-09 02:16:37,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2025-03-09 02:16:37,952 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:16:37,952 INFO L218 NwaCegarLoop]: trace histogram [23, 22, 22, 22, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1] [2025-03-09 02:16:37,958 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-09 02:16:38,156 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 [2025-03-09 02:16:38,156 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)] === [2025-03-09 02:16:38,157 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:16:38,157 INFO L85 PathProgramCache]: Analyzing trace with hash -663912651, now seen corresponding path program 4 times [2025-03-09 02:16:38,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:16:38,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667295961] [2025-03-09 02:16:38,157 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-09 02:16:38,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:16:38,187 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 226 statements into 2 equivalence classes. [2025-03-09 02:16:38,256 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 226 of 226 statements. [2025-03-09 02:16:38,257 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-09 02:16:38,257 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-09 02:16:38,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1449805010] [2025-03-09 02:16:38,260 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-09 02:16:38,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:16:38,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 02:16:38,264 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) [2025-03-09 02:16:38,269 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-09 02:16:38,323 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 226 statements into 2 equivalence classes. [2025-03-09 02:16:38,374 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 226 of 226 statements. [2025-03-09 02:16:38,374 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-09 02:16:38,374 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:16:38,378 INFO L256 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 47 conjuncts are in the unsatisfiable core [2025-03-09 02:16:38,384 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 02:16:38,871 INFO L134 CoverageAnalysis]: Checked inductivity of 2354 backedges. 0 proven. 1430 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2025-03-09 02:16:38,871 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 02:16:40,149 INFO L134 CoverageAnalysis]: Checked inductivity of 2354 backedges. 0 proven. 1430 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2025-03-09 02:16:40,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:16:40,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667295961] [2025-03-09 02:16:40,149 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-09 02:16:40,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1449805010] [2025-03-09 02:16:40,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1449805010] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 02:16:40,149 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-09 02:16:40,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 47 [2025-03-09 02:16:40,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364355815] [2025-03-09 02:16:40,150 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-09 02:16:40,150 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2025-03-09 02:16:40,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:16:40,151 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2025-03-09 02:16:40,152 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=622, Invalid=1634, Unknown=0, NotChecked=0, Total=2256 [2025-03-09 02:16:40,152 INFO L87 Difference]: Start difference. First operand 143 states and 164 transitions. Second operand has 48 states, 47 states have (on average 4.9361702127659575) internal successors, (232), 48 states have internal predecessors, (232), 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) [2025-03-09 02:16:42,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:16:42,939 INFO L93 Difference]: Finished difference Result 288 states and 356 transitions. [2025-03-09 02:16:42,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2025-03-09 02:16:42,940 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 4.9361702127659575) internal successors, (232), 48 states have internal predecessors, (232), 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 226 [2025-03-09 02:16:42,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:16:42,942 INFO L225 Difference]: With dead ends: 288 [2025-03-09 02:16:42,942 INFO L226 Difference]: Without dead ends: 287 [2025-03-09 02:16:42,949 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 472 GetRequests, 404 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1678, Invalid=3152, Unknown=0, NotChecked=0, Total=4830 [2025-03-09 02:16:42,949 INFO L435 NwaCegarLoop]: 77 mSDtfsCounter, 75 mSDsluCounter, 1172 mSDsCounter, 0 mSdLazyCounter, 2803 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 1249 SdHoareTripleChecker+Invalid, 2828 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 2803 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-03-09 02:16:42,950 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 1249 Invalid, 2828 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 2803 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-03-09 02:16:42,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2025-03-09 02:16:42,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2025-03-09 02:16:42,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 239 states have (on average 1.00418410041841) internal successors, (240), 239 states have internal predecessors, (240), 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) [2025-03-09 02:16:42,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 332 transitions. [2025-03-09 02:16:42,977 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 332 transitions. Word has length 226 [2025-03-09 02:16:42,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:16:42,978 INFO L471 AbstractCegarLoop]: Abstraction has 287 states and 332 transitions. [2025-03-09 02:16:42,978 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 4.9361702127659575) internal successors, (232), 48 states have internal predecessors, (232), 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) [2025-03-09 02:16:42,979 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 332 transitions. [2025-03-09 02:16:42,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 467 [2025-03-09 02:16:42,987 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:16:42,988 INFO L218 NwaCegarLoop]: trace histogram [47, 46, 46, 46, 46, 46, 46, 46, 46, 46, 1, 1, 1, 1, 1] [2025-03-09 02:16:42,995 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-03-09 02:16:43,188 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 [2025-03-09 02:16:43,189 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)] === [2025-03-09 02:16:43,189 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:16:43,189 INFO L85 PathProgramCache]: Analyzing trace with hash -1195679851, now seen corresponding path program 5 times [2025-03-09 02:16:43,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:16:43,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561507911] [2025-03-09 02:16:43,190 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-09 02:16:43,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:16:43,226 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 466 statements into 47 equivalence classes. [2025-03-09 02:16:43,466 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) and asserted 466 of 466 statements. [2025-03-09 02:16:43,466 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2025-03-09 02:16:43,467 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-09 02:16:43,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [356672035] [2025-03-09 02:16:43,472 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-09 02:16:43,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:16:43,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 02:16:43,481 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) [2025-03-09 02:16:43,497 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-09 02:16:43,563 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 466 statements into 47 equivalence classes. [2025-03-09 02:16:43,687 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) and asserted 466 of 466 statements. [2025-03-09 02:16:43,687 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2025-03-09 02:16:43,687 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:16:43,691 INFO L256 TraceCheckSpWp]: Trace formula consists of 766 conjuncts, 95 conjuncts are in the unsatisfiable core [2025-03-09 02:16:43,702 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 02:16:44,778 INFO L134 CoverageAnalysis]: Checked inductivity of 10442 backedges. 0 proven. 6302 refuted. 0 times theorem prover too weak. 4140 trivial. 0 not checked. [2025-03-09 02:16:44,778 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 02:16:48,163 INFO L134 CoverageAnalysis]: Checked inductivity of 10442 backedges. 0 proven. 6302 refuted. 0 times theorem prover too weak. 4140 trivial. 0 not checked. [2025-03-09 02:16:48,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:16:48,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561507911] [2025-03-09 02:16:48,164 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-09 02:16:48,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [356672035] [2025-03-09 02:16:48,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [356672035] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 02:16:48,164 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-09 02:16:48,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 95 [2025-03-09 02:16:48,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524097703] [2025-03-09 02:16:48,164 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-09 02:16:48,165 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2025-03-09 02:16:48,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:16:48,167 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2025-03-09 02:16:48,171 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=2398, Invalid=6722, Unknown=0, NotChecked=0, Total=9120 [2025-03-09 02:16:48,172 INFO L87 Difference]: Start difference. First operand 287 states and 332 transitions. Second operand has 96 states, 95 states have (on average 4.968421052631579) internal successors, (472), 96 states have internal predecessors, (472), 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) [2025-03-09 02:17:01,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:17:01,282 INFO L93 Difference]: Finished difference Result 576 states and 716 transitions. [2025-03-09 02:17:01,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2025-03-09 02:17:01,282 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 95 states have (on average 4.968421052631579) internal successors, (472), 96 states have internal predecessors, (472), 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 466 [2025-03-09 02:17:01,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:17:01,289 INFO L225 Difference]: With dead ends: 576 [2025-03-09 02:17:01,289 INFO L226 Difference]: Without dead ends: 575 [2025-03-09 02:17:01,294 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 976 GetRequests, 836 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1035 ImplicationChecksByTransitivity, 13.1s TimeCoverageRelationStatistics Valid=6814, Invalid=13208, Unknown=0, NotChecked=0, Total=20022 [2025-03-09 02:17:01,295 INFO L435 NwaCegarLoop]: 149 mSDtfsCounter, 144 mSDsluCounter, 4704 mSDsCounter, 0 mSdLazyCounter, 11373 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 4853 SdHoareTripleChecker+Invalid, 11421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 11373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2025-03-09 02:17:01,296 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 4853 Invalid, 11421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 11373 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2025-03-09 02:17:01,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2025-03-09 02:17:01,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 575. [2025-03-09 02:17:01,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 575 states, 479 states have (on average 1.0020876826722338) internal successors, (480), 479 states have internal predecessors, (480), 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) [2025-03-09 02:17:01,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 668 transitions. [2025-03-09 02:17:01,335 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 668 transitions. Word has length 466 [2025-03-09 02:17:01,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:17:01,336 INFO L471 AbstractCegarLoop]: Abstraction has 575 states and 668 transitions. [2025-03-09 02:17:01,336 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 95 states have (on average 4.968421052631579) internal successors, (472), 96 states have internal predecessors, (472), 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) [2025-03-09 02:17:01,336 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 668 transitions. [2025-03-09 02:17:01,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 947 [2025-03-09 02:17:01,367 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:17:01,368 INFO L218 NwaCegarLoop]: trace histogram [95, 94, 94, 94, 94, 94, 94, 94, 94, 94, 1, 1, 1, 1, 1] [2025-03-09 02:17:01,378 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-03-09 02:17:01,568 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 [2025-03-09 02:17:01,569 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)] === [2025-03-09 02:17:01,569 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:17:01,570 INFO L85 PathProgramCache]: Analyzing trace with hash 1763270741, now seen corresponding path program 6 times [2025-03-09 02:17:01,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:17:01,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837809161] [2025-03-09 02:17:01,570 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-09 02:17:01,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:17:01,625 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 946 statements into 95 equivalence classes. [2025-03-09 02:17:02,079 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 95 check-sat command(s) and asserted 946 of 946 statements. [2025-03-09 02:17:02,079 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 95 check-sat command(s) [2025-03-09 02:17:02,079 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-09 02:17:02,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [38576837] [2025-03-09 02:17:02,088 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-09 02:17:02,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:17:02,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 02:17:02,090 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) [2025-03-09 02:17:02,092 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-09 02:17:02,181 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 946 statements into 95 equivalence classes. [2025-03-09 02:17:03,044 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 95 check-sat command(s) and asserted 946 of 946 statements. [2025-03-09 02:17:03,045 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 95 check-sat command(s) [2025-03-09 02:17:03,045 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:17:03,050 INFO L256 TraceCheckSpWp]: Trace formula consists of 1534 conjuncts, 98 conjuncts are in the unsatisfiable core [2025-03-09 02:17:03,063 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 02:17:06,475 INFO L134 CoverageAnalysis]: Checked inductivity of 43898 backedges. 0 proven. 26414 refuted. 0 times theorem prover too weak. 17484 trivial. 0 not checked. [2025-03-09 02:17:06,475 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 02:17:06,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:17:06,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837809161] [2025-03-09 02:17:06,985 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-09 02:17:06,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [38576837] [2025-03-09 02:17:06,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [38576837] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 02:17:06,985 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2025-03-09 02:17:06,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97] total 97 [2025-03-09 02:17:06,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777589470] [2025-03-09 02:17:06,986 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2025-03-09 02:17:06,986 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2025-03-09 02:17:06,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:17:06,988 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2025-03-09 02:17:06,990 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=4771, Invalid=5531, Unknown=0, NotChecked=0, Total=10302 [2025-03-09 02:17:06,990 INFO L87 Difference]: Start difference. First operand 575 states and 668 transitions. Second operand has 98 states, 97 states have (on average 4.938144329896907) internal successors, (479), 98 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) [2025-03-09 02:17:12,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 02:17:12,787 INFO L93 Difference]: Finished difference Result 586 states and 681 transitions. [2025-03-09 02:17:12,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2025-03-09 02:17:12,788 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 97 states have (on average 4.938144329896907) internal successors, (479), 98 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) Word has length 946 [2025-03-09 02:17:12,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 02:17:12,793 INFO L225 Difference]: With dead ends: 586 [2025-03-09 02:17:12,794 INFO L226 Difference]: Without dead ends: 585 [2025-03-09 02:17:12,801 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1055 GetRequests, 861 SyntacticMatches, 0 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4751 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=14359, Invalid=23861, Unknown=0, NotChecked=0, Total=38220 [2025-03-09 02:17:12,802 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 379 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 484 mSolverCounterSat, 189 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 380 SdHoareTripleChecker+Valid, 125 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 [2025-03-09 02:17:12,802 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [380 Valid, 125 Invalid, 673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [189 Valid, 484 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-09 02:17:12,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2025-03-09 02:17:12,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 581. [2025-03-09 02:17:12,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 581 states, 484 states have (on average 1.0020661157024793) internal successors, (485), 484 states have internal predecessors, (485), 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) [2025-03-09 02:17:12,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 675 transitions. [2025-03-09 02:17:12,828 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 675 transitions. Word has length 946 [2025-03-09 02:17:12,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 02:17:12,830 INFO L471 AbstractCegarLoop]: Abstraction has 581 states and 675 transitions. [2025-03-09 02:17:12,831 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 98 states, 97 states have (on average 4.938144329896907) internal successors, (479), 98 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) [2025-03-09 02:17:12,831 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 675 transitions. [2025-03-09 02:17:12,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 957 [2025-03-09 02:17:12,846 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 02:17:12,846 INFO L218 NwaCegarLoop]: trace histogram [96, 95, 95, 95, 95, 95, 95, 95, 95, 95, 1, 1, 1, 1, 1] [2025-03-09 02:17:12,858 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-03-09 02:17:13,050 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 [2025-03-09 02:17:13,050 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)] === [2025-03-09 02:17:13,051 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 02:17:13,051 INFO L85 PathProgramCache]: Analyzing trace with hash -994361895, now seen corresponding path program 7 times [2025-03-09 02:17:13,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 02:17:13,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378471763] [2025-03-09 02:17:13,051 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-09 02:17:13,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 02:17:13,088 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 956 statements into 1 equivalence classes. [2025-03-09 02:17:13,217 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 956 of 956 statements. [2025-03-09 02:17:13,217 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:17:13,217 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-09 02:17:13,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [484234762] [2025-03-09 02:17:13,222 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-09 02:17:13,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 02:17:13,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 02:17:13,224 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) [2025-03-09 02:17:13,225 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-09 02:17:13,322 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 956 statements into 1 equivalence classes. [2025-03-09 02:17:13,460 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 956 of 956 statements. [2025-03-09 02:17:13,460 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 02:17:13,460 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 02:17:13,467 INFO L256 TraceCheckSpWp]: Trace formula consists of 1550 conjuncts, 193 conjuncts are in the unsatisfiable core [2025-03-09 02:17:13,475 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 02:17:16,768 INFO L134 CoverageAnalysis]: Checked inductivity of 44840 backedges. 0 proven. 26980 refuted. 0 times theorem prover too weak. 17860 trivial. 0 not checked. [2025-03-09 02:17:16,769 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 02:17:29,617 INFO L134 CoverageAnalysis]: Checked inductivity of 44840 backedges. 0 proven. 26980 refuted. 0 times theorem prover too weak. 17860 trivial. 0 not checked. [2025-03-09 02:17:29,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 02:17:29,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378471763] [2025-03-09 02:17:29,617 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-09 02:17:29,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [484234762] [2025-03-09 02:17:29,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [484234762] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 02:17:29,617 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-09 02:17:29,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97] total 193 [2025-03-09 02:17:29,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930512783] [2025-03-09 02:17:29,618 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-09 02:17:29,619 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 194 states [2025-03-09 02:17:29,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 02:17:29,623 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 194 interpolants. [2025-03-09 02:17:29,626 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9601, Invalid=27841, Unknown=0, NotChecked=0, Total=37442 [2025-03-09 02:17:29,627 INFO L87 Difference]: Start difference. First operand 581 states and 675 transitions. Second operand has 194 states, 193 states have (on average 4.984455958549223) internal successors, (962), 194 states have internal predecessors, (962), 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)