./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/loop-lit/mine2017-ex4.6.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version da043454 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 ../../../trunk/examples/svcomp/loop-lit/mine2017-ex4.6.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1fa7c9a8ed8874a508931184bf09b1ee30162cb6ccbf87de6b2ebe54845cfa76 --- Real Ultimate output --- This is Ultimate 0.3.0-wip.fs.system-includes-da04345-m [2025-04-30 10:20:37,188 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-30 10:20:37,242 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-04-30 10:20:37,247 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-30 10:20:37,247 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-30 10:20:37,266 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-30 10:20:37,267 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-30 10:20:37,267 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-30 10:20:37,267 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-30 10:20:37,267 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-30 10:20:37,267 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-30 10:20:37,267 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-30 10:20:37,268 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-30 10:20:37,268 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-30 10:20:37,268 INFO L153 SettingsManager]: * Use SBE=true [2025-04-30 10:20:37,268 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-30 10:20:37,268 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-30 10:20:37,268 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-30 10:20:37,268 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-30 10:20:37,268 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-30 10:20:37,268 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-30 10:20:37,268 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-30 10:20:37,268 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-30 10:20:37,270 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-30 10:20:37,270 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-04-30 10:20:37,270 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-04-30 10:20:37,270 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-30 10:20:37,270 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-30 10:20:37,270 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-30 10:20:37,270 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-30 10:20:37,271 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-30 10:20:37,271 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-30 10:20:37,271 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-30 10:20:37,271 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-30 10:20:37,271 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-30 10:20:37,271 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-30 10:20:37,271 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-30 10:20:37,271 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-30 10:20:37,271 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-30 10:20:37,271 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-30 10:20:37,272 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-30 10:20:37,272 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-30 10:20:37,272 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-30 10:20:37,272 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-30 10:20:37,272 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-30 10:20:37,272 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-30 10:20:37,272 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-30 10:20:37,272 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-30 10:20:37,272 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-30 10:20:37,272 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 -> 1fa7c9a8ed8874a508931184bf09b1ee30162cb6ccbf87de6b2ebe54845cfa76 [2025-04-30 10:20:37,491 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-30 10:20:37,499 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-30 10:20:37,501 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-30 10:20:37,502 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-30 10:20:37,502 INFO L274 PluginConnector]: CDTParser initialized [2025-04-30 10:20:37,504 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/mine2017-ex4.6.i [2025-04-30 10:20:38,787 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0ac79a66/676e2e8ce8f04c1a95c981111bfdc3ed/FLAG3e76d5a5f [2025-04-30 10:20:39,011 INFO L389 CDTParser]: Found 1 translation units. [2025-04-30 10:20:39,011 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/mine2017-ex4.6.i [2025-04-30 10:20:39,018 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0ac79a66/676e2e8ce8f04c1a95c981111bfdc3ed/FLAG3e76d5a5f [2025-04-30 10:20:39,789 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0ac79a66/676e2e8ce8f04c1a95c981111bfdc3ed [2025-04-30 10:20:39,791 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-30 10:20:39,792 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-04-30 10:20:39,793 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-30 10:20:39,793 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-30 10:20:39,796 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-30 10:20:39,797 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.04 10:20:39" (1/1) ... [2025-04-30 10:20:39,799 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@714a39e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:20:39, skipping insertion in model container [2025-04-30 10:20:39,799 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.04 10:20:39" (1/1) ... [2025-04-30 10:20:39,810 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-30 10:20:39,959 INFO L211 PostProcessor]: Analyzing one entry point: main [2025-04-30 10:20:39,965 INFO L200 MainTranslator]: Completed pre-run [2025-04-30 10:20:39,990 INFO L211 PostProcessor]: Analyzing one entry point: main [2025-04-30 10:20:40,001 INFO L204 MainTranslator]: Completed translation [2025-04-30 10:20:40,002 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:20:40 WrapperNode [2025-04-30 10:20:40,002 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-30 10:20:40,003 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-30 10:20:40,003 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-30 10:20:40,003 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-30 10:20:40,009 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:20:40" (1/1) ... [2025-04-30 10:20:40,015 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:20:40" (1/1) ... [2025-04-30 10:20:40,030 INFO L138 Inliner]: procedures = 14, calls = 10, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 27 [2025-04-30 10:20:40,030 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-30 10:20:40,031 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-30 10:20:40,031 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-30 10:20:40,032 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-30 10:20:40,037 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:20:40" (1/1) ... [2025-04-30 10:20:40,037 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:20:40" (1/1) ... [2025-04-30 10:20:40,038 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:20:40" (1/1) ... [2025-04-30 10:20:40,045 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]. [2025-04-30 10:20:40,045 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:20:40" (1/1) ... [2025-04-30 10:20:40,045 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:20:40" (1/1) ... [2025-04-30 10:20:40,047 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:20:40" (1/1) ... [2025-04-30 10:20:40,047 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:20:40" (1/1) ... [2025-04-30 10:20:40,049 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:20:40" (1/1) ... [2025-04-30 10:20:40,049 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:20:40" (1/1) ... [2025-04-30 10:20:40,049 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:20:40" (1/1) ... [2025-04-30 10:20:40,053 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-30 10:20:40,053 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-30 10:20:40,054 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-30 10:20:40,054 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-30 10:20:40,054 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:20:40" (1/1) ... [2025-04-30 10:20:40,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-30 10:20:40,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-30 10:20:40,079 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) [2025-04-30 10:20:40,084 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 [2025-04-30 10:20:40,098 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-30 10:20:40,098 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-04-30 10:20:40,098 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-30 10:20:40,099 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-30 10:20:40,099 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-04-30 10:20:40,099 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-04-30 10:20:40,133 INFO L234 CfgBuilder]: Building ICFG [2025-04-30 10:20:40,135 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-30 10:20:40,212 INFO L? ?]: Removed 7 outVars from TransFormulas that were not future-live. [2025-04-30 10:20:40,212 INFO L283 CfgBuilder]: Performing block encoding [2025-04-30 10:20:40,218 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-30 10:20:40,219 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-30 10:20:40,219 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.04 10:20:40 BoogieIcfgContainer [2025-04-30 10:20:40,219 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-30 10:20:40,221 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-30 10:20:40,221 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-30 10:20:40,224 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-30 10:20:40,224 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.04 10:20:39" (1/3) ... [2025-04-30 10:20:40,224 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e848b89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.04 10:20:40, skipping insertion in model container [2025-04-30 10:20:40,224 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:20:40" (2/3) ... [2025-04-30 10:20:40,225 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e848b89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.04 10:20:40, skipping insertion in model container [2025-04-30 10:20:40,225 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.04 10:20:40" (3/3) ... [2025-04-30 10:20:40,225 INFO L128 eAbstractionObserver]: Analyzing ICFG mine2017-ex4.6.i [2025-04-30 10:20:40,235 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-30 10:20:40,237 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG mine2017-ex4.6.i that has 2 procedures, 22 locations, 29 edges, 1 initial locations, 1 loop locations, and 2 error locations. [2025-04-30 10:20:40,279 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-30 10:20:40,289 INFO L340 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;@73cc74f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-30 10:20:40,289 INFO L341 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2025-04-30 10:20:40,293 INFO L278 IsEmpty]: Start isEmpty. Operand has 22 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 18 states have internal predecessors, (20), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-04-30 10:20:40,298 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-04-30 10:20:40,299 INFO L210 NwaCegarLoop]: Found error trace [2025-04-30 10:20:40,299 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-30 10:20:40,300 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2025-04-30 10:20:40,303 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:20:40,304 INFO L85 PathProgramCache]: Analyzing trace with hash 750111348, now seen corresponding path program 1 times [2025-04-30 10:20:40,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:20:40,310 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074313476] [2025-04-30 10:20:40,310 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:20:40,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:20:40,365 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-04-30 10:20:40,384 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-04-30 10:20:40,385 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:20:40,385 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:20:40,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-30 10:20:40,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:20:40,491 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074313476] [2025-04-30 10:20:40,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074313476] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:20:40,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:20:40,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-30 10:20:40,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272179901] [2025-04-30 10:20:40,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:20:40,498 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-30 10:20:40,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:20:40,515 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-30 10:20:40,515 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-30 10:20:40,517 INFO L87 Difference]: Start difference. First operand has 22 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 18 states have internal predecessors, (20), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 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) [2025-04-30 10:20:40,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-30 10:20:40,573 INFO L93 Difference]: Finished difference Result 46 states and 62 transitions. [2025-04-30 10:20:40,574 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-30 10:20:40,575 INFO L79 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 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) Word has length 10 [2025-04-30 10:20:40,575 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-30 10:20:40,578 INFO L225 Difference]: With dead ends: 46 [2025-04-30 10:20:40,579 INFO L226 Difference]: Without dead ends: 19 [2025-04-30 10:20:40,581 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-30 10:20:40,584 INFO L437 NwaCegarLoop]: 18 mSDtfsCounter, 1 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-04-30 10:20:40,584 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 48 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-04-30 10:20:40,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2025-04-30 10:20:40,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2025-04-30 10:20:40,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 13 states have internal predecessors, (14), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-04-30 10:20:40,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2025-04-30 10:20:40,614 INFO L79 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 10 [2025-04-30 10:20:40,615 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-30 10:20:40,615 INFO L485 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2025-04-30 10:20:40,615 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 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) [2025-04-30 10:20:40,615 INFO L278 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2025-04-30 10:20:40,616 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-04-30 10:20:40,616 INFO L210 NwaCegarLoop]: Found error trace [2025-04-30 10:20:40,616 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-30 10:20:40,617 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-30 10:20:40,617 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2025-04-30 10:20:40,618 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:20:40,618 INFO L85 PathProgramCache]: Analyzing trace with hash 1778615350, now seen corresponding path program 1 times [2025-04-30 10:20:40,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:20:40,618 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43383566] [2025-04-30 10:20:40,619 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:20:40,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:20:40,624 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-04-30 10:20:40,631 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-04-30 10:20:40,631 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:20:40,631 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:20:40,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-30 10:20:40,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:20:40,679 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43383566] [2025-04-30 10:20:40,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43383566] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:20:40,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:20:40,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-30 10:20:40,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909861047] [2025-04-30 10:20:40,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:20:40,680 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-30 10:20:40,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:20:40,680 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-30 10:20:40,680 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-30 10:20:40,680 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 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) [2025-04-30 10:20:40,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-30 10:20:40,701 INFO L93 Difference]: Finished difference Result 18 states and 20 transitions. [2025-04-30 10:20:40,701 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-30 10:20:40,701 INFO L79 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 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) Word has length 11 [2025-04-30 10:20:40,701 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-30 10:20:40,702 INFO L225 Difference]: With dead ends: 18 [2025-04-30 10:20:40,702 INFO L226 Difference]: Without dead ends: 17 [2025-04-30 10:20:40,702 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-30 10:20:40,702 INFO L437 NwaCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-04-30 10:20:40,702 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 23 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-04-30 10:20:40,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2025-04-30 10:20:40,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2025-04-30 10:20:40,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 12 states have internal predecessors, (13), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-04-30 10:20:40,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2025-04-30 10:20:40,706 INFO L79 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 11 [2025-04-30 10:20:40,706 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-30 10:20:40,706 INFO L485 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2025-04-30 10:20:40,706 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 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) [2025-04-30 10:20:40,706 INFO L278 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2025-04-30 10:20:40,706 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2025-04-30 10:20:40,707 INFO L210 NwaCegarLoop]: Found error trace [2025-04-30 10:20:40,707 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-04-30 10:20:40,707 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-04-30 10:20:40,707 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2025-04-30 10:20:40,707 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:20:40,707 INFO L85 PathProgramCache]: Analyzing trace with hash -744182572, now seen corresponding path program 1 times [2025-04-30 10:20:40,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:20:40,707 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827102563] [2025-04-30 10:20:40,707 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:20:40,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:20:40,715 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-04-30 10:20:40,726 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-04-30 10:20:40,726 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:20:40,726 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:20:40,821 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-04-30 10:20:40,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:20:40,822 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827102563] [2025-04-30 10:20:40,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827102563] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-30 10:20:40,822 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [960208342] [2025-04-30 10:20:40,822 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:20:40,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-30 10:20:40,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-30 10:20:40,825 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) [2025-04-30 10:20:40,826 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-04-30 10:20:40,851 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-04-30 10:20:40,866 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-04-30 10:20:40,866 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:20:40,866 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:20:40,868 INFO L256 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-04-30 10:20:40,871 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-30 10:20:40,915 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-04-30 10:20:40,915 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-30 10:20:41,004 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-04-30 10:20:41,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [960208342] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-30 10:20:41,004 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-30 10:20:41,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2025-04-30 10:20:41,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299997360] [2025-04-30 10:20:41,004 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-30 10:20:41,005 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-04-30 10:20:41,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:20:41,005 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-04-30 10:20:41,005 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2025-04-30 10:20:41,005 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 10 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 10 states have internal predecessors, (20), 4 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2025-04-30 10:20:41,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-30 10:20:41,066 INFO L93 Difference]: Finished difference Result 36 states and 46 transitions. [2025-04-30 10:20:41,066 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-04-30 10:20:41,066 INFO L79 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 10 states have internal predecessors, (20), 4 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 24 [2025-04-30 10:20:41,067 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-30 10:20:41,067 INFO L225 Difference]: With dead ends: 36 [2025-04-30 10:20:41,067 INFO L226 Difference]: Without dead ends: 35 [2025-04-30 10:20:41,068 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2025-04-30 10:20:41,068 INFO L437 NwaCegarLoop]: 10 mSDtfsCounter, 2 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-04-30 10:20:41,068 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 50 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-04-30 10:20:41,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2025-04-30 10:20:41,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2025-04-30 10:20:41,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 24 states have (on average 1.0416666666666667) internal successors, (25), 24 states have internal predecessors, (25), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-04-30 10:20:41,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 43 transitions. [2025-04-30 10:20:41,080 INFO L79 Accepts]: Start accepts. Automaton has 35 states and 43 transitions. Word has length 24 [2025-04-30 10:20:41,080 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-30 10:20:41,080 INFO L485 AbstractCegarLoop]: Abstraction has 35 states and 43 transitions. [2025-04-30 10:20:41,080 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 10 states have internal predecessors, (20), 4 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2025-04-30 10:20:41,080 INFO L278 IsEmpty]: Start isEmpty. Operand 35 states and 43 transitions. [2025-04-30 10:20:41,082 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2025-04-30 10:20:41,082 INFO L210 NwaCegarLoop]: Found error trace [2025-04-30 10:20:41,082 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1] [2025-04-30 10:20:41,089 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-04-30 10:20:41,283 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-30 10:20:41,283 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2025-04-30 10:20:41,284 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:20:41,284 INFO L85 PathProgramCache]: Analyzing trace with hash 495150068, now seen corresponding path program 2 times [2025-04-30 10:20:41,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:20:41,284 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143306818] [2025-04-30 10:20:41,284 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-30 10:20:41,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:20:41,291 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 66 statements into 2 equivalence classes. [2025-04-30 10:20:41,308 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 66 of 66 statements. [2025-04-30 10:20:41,308 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-30 10:20:41,308 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:20:41,583 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2025-04-30 10:20:41,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:20:41,584 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143306818] [2025-04-30 10:20:41,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143306818] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-30 10:20:41,584 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1792148122] [2025-04-30 10:20:41,584 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-30 10:20:41,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-30 10:20:41,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-30 10:20:41,588 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) [2025-04-30 10:20:41,590 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-04-30 10:20:41,612 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 66 statements into 2 equivalence classes. [2025-04-30 10:20:41,626 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 66 of 66 statements. [2025-04-30 10:20:41,627 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-30 10:20:41,627 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:20:41,628 INFO L256 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-04-30 10:20:41,630 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-30 10:20:41,703 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2025-04-30 10:20:41,703 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-30 10:20:41,923 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2025-04-30 10:20:41,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1792148122] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-30 10:20:41,924 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-30 10:20:41,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 21 [2025-04-30 10:20:41,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458281737] [2025-04-30 10:20:41,924 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-30 10:20:41,925 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-04-30 10:20:41,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:20:41,927 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-04-30 10:20:41,927 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2025-04-30 10:20:41,928 INFO L87 Difference]: Start difference. First operand 35 states and 43 transitions. Second operand has 22 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 22 states have internal predecessors, (44), 10 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 10 states have call predecessors, (18), 10 states have call successors, (18) [2025-04-30 10:20:42,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-30 10:20:42,030 INFO L93 Difference]: Finished difference Result 72 states and 97 transitions. [2025-04-30 10:20:42,031 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-04-30 10:20:42,031 INFO L79 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 22 states have internal predecessors, (44), 10 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 10 states have call predecessors, (18), 10 states have call successors, (18) Word has length 66 [2025-04-30 10:20:42,031 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-30 10:20:42,032 INFO L225 Difference]: With dead ends: 72 [2025-04-30 10:20:42,032 INFO L226 Difference]: Without dead ends: 71 [2025-04-30 10:20:42,032 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2025-04-30 10:20:42,033 INFO L437 NwaCegarLoop]: 10 mSDtfsCounter, 2 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-30 10:20:42,033 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 41 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-30 10:20:42,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2025-04-30 10:20:42,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2025-04-30 10:20:42,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 48 states have (on average 1.0208333333333333) internal successors, (49), 48 states have internal predecessors, (49), 21 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2025-04-30 10:20:42,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 91 transitions. [2025-04-30 10:20:42,050 INFO L79 Accepts]: Start accepts. Automaton has 71 states and 91 transitions. Word has length 66 [2025-04-30 10:20:42,050 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-30 10:20:42,050 INFO L485 AbstractCegarLoop]: Abstraction has 71 states and 91 transitions. [2025-04-30 10:20:42,050 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 22 states have internal predecessors, (44), 10 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 10 states have call predecessors, (18), 10 states have call successors, (18) [2025-04-30 10:20:42,050 INFO L278 IsEmpty]: Start isEmpty. Operand 71 states and 91 transitions. [2025-04-30 10:20:42,055 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2025-04-30 10:20:42,055 INFO L210 NwaCegarLoop]: Found error trace [2025-04-30 10:20:42,055 INFO L218 NwaCegarLoop]: trace histogram [21, 21, 21, 11, 11, 11, 11, 10, 10, 10, 10, 1, 1, 1] [2025-04-30 10:20:42,066 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-04-30 10:20:42,256 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2025-04-30 10:20:42,256 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2025-04-30 10:20:42,257 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:20:42,257 INFO L85 PathProgramCache]: Analyzing trace with hash 1592662580, now seen corresponding path program 3 times [2025-04-30 10:20:42,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:20:42,257 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211099084] [2025-04-30 10:20:42,257 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-30 10:20:42,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:20:42,271 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 150 statements into 16 equivalence classes. [2025-04-30 10:20:42,282 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 30 of 150 statements. [2025-04-30 10:20:42,283 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-04-30 10:20:42,283 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:20:42,325 INFO L134 CoverageAnalysis]: Checked inductivity of 1150 backedges. 97 proven. 3 refuted. 0 times theorem prover too weak. 1050 trivial. 0 not checked. [2025-04-30 10:20:42,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:20:42,325 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211099084] [2025-04-30 10:20:42,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211099084] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-30 10:20:42,326 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1116030190] [2025-04-30 10:20:42,326 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-30 10:20:42,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-30 10:20:42,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-30 10:20:42,328 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) [2025-04-30 10:20:42,329 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-04-30 10:20:42,354 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 150 statements into 16 equivalence classes. [2025-04-30 10:20:42,362 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 30 of 150 statements. [2025-04-30 10:20:42,362 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-04-30 10:20:42,362 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:20:42,365 INFO L256 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-04-30 10:20:42,368 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-30 10:20:42,415 INFO L134 CoverageAnalysis]: Checked inductivity of 1150 backedges. 97 proven. 3 refuted. 0 times theorem prover too weak. 1050 trivial. 0 not checked. [2025-04-30 10:20:42,415 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-30 10:20:42,507 INFO L134 CoverageAnalysis]: Checked inductivity of 1150 backedges. 97 proven. 3 refuted. 0 times theorem prover too weak. 1050 trivial. 0 not checked. [2025-04-30 10:20:42,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1116030190] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-30 10:20:42,507 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-30 10:20:42,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2025-04-30 10:20:42,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535150824] [2025-04-30 10:20:42,507 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-30 10:20:42,508 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-04-30 10:20:42,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:20:42,509 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-04-30 10:20:42,509 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2025-04-30 10:20:42,509 INFO L87 Difference]: Start difference. First operand 71 states and 91 transitions. Second operand has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 states have internal predecessors, (20), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2025-04-30 10:20:42,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-30 10:20:42,538 INFO L93 Difference]: Finished difference Result 71 states and 91 transitions. [2025-04-30 10:20:42,538 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-04-30 10:20:42,538 INFO L79 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 states have internal predecessors, (20), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 150 [2025-04-30 10:20:42,540 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-30 10:20:42,541 INFO L225 Difference]: With dead ends: 71 [2025-04-30 10:20:42,541 INFO L226 Difference]: Without dead ends: 0 [2025-04-30 10:20:42,541 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2025-04-30 10:20:42,541 INFO L437 NwaCegarLoop]: 6 mSDtfsCounter, 1 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-04-30 10:20:42,542 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 29 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-04-30 10:20:42,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2025-04-30 10:20:42,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2025-04-30 10:20:42,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:20:42,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2025-04-30 10:20:42,542 INFO L79 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 150 [2025-04-30 10:20:42,542 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-30 10:20:42,542 INFO L485 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-30 10:20:42,542 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 states have internal predecessors, (20), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2025-04-30 10:20:42,542 INFO L278 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2025-04-30 10:20:42,543 INFO L284 IsEmpty]: Finished isEmpty. No accepting run. [2025-04-30 10:20:42,546 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2025-04-30 10:20:42,546 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2025-04-30 10:20:42,552 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-04-30 10:20:42,747 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-30 10:20:42,749 INFO L422 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2025-04-30 10:20:42,750 INFO L312 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2025-04-30 10:20:42,845 INFO L171 ceAbstractionStarter]: Computing trace abstraction results [2025-04-30 10:20:42,856 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.04 10:20:42 BoogieIcfgContainer [2025-04-30 10:20:42,859 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-04-30 10:20:42,860 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-04-30 10:20:42,860 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-04-30 10:20:42,860 INFO L274 PluginConnector]: Witness Printer initialized [2025-04-30 10:20:42,861 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.04 10:20:40" (3/4) ... [2025-04-30 10:20:42,862 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-04-30 10:20:42,866 INFO L362 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2025-04-30 10:20:42,868 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2025-04-30 10:20:42,869 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2025-04-30 10:20:42,869 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2025-04-30 10:20:42,869 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-04-30 10:20:42,925 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-04-30 10:20:42,927 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-04-30 10:20:42,927 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-04-30 10:20:42,928 INFO L158 Benchmark]: Toolchain (without parser) took 3135.56ms. Allocated memory is still 167.8MB. Free memory was 133.9MB in the beginning and 95.3MB in the end (delta: 38.6MB). Peak memory consumption was 38.0MB. Max. memory is 16.1GB. [2025-04-30 10:20:42,928 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 201.3MB. Free memory is still 128.0MB. There was no memory consumed. Max. memory is 16.1GB. [2025-04-30 10:20:42,929 INFO L158 Benchmark]: CACSL2BoogieTranslator took 210.08ms. Allocated memory is still 167.8MB. Free memory was 133.5MB in the beginning and 120.0MB in the end (delta: 13.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-04-30 10:20:42,929 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.17ms. Allocated memory is still 167.8MB. Free memory was 120.0MB in the beginning and 119.1MB in the end (delta: 960.0kB). There was no memory consumed. Max. memory is 16.1GB. [2025-04-30 10:20:42,929 INFO L158 Benchmark]: Boogie Preprocessor took 22.22ms. Allocated memory is still 167.8MB. Free memory was 118.6MB in the beginning and 117.7MB in the end (delta: 907.6kB). There was no memory consumed. Max. memory is 16.1GB. [2025-04-30 10:20:42,930 INFO L158 Benchmark]: RCFGBuilder took 165.58ms. Allocated memory is still 167.8MB. Free memory was 117.7MB in the beginning and 107.5MB in the end (delta: 10.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-04-30 10:20:42,930 INFO L158 Benchmark]: TraceAbstraction took 2638.09ms. Allocated memory is still 167.8MB. Free memory was 107.0MB in the beginning and 100.6MB in the end (delta: 6.4MB). Peak memory consumption was 4.4MB. Max. memory is 16.1GB. [2025-04-30 10:20:42,930 INFO L158 Benchmark]: Witness Printer took 67.21ms. Allocated memory is still 167.8MB. Free memory was 100.6MB in the beginning and 95.3MB in the end (delta: 5.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-04-30 10:20:42,931 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 201.3MB. Free memory is still 128.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 210.08ms. Allocated memory is still 167.8MB. Free memory was 133.5MB in the beginning and 120.0MB in the end (delta: 13.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 27.17ms. Allocated memory is still 167.8MB. Free memory was 120.0MB in the beginning and 119.1MB in the end (delta: 960.0kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 22.22ms. Allocated memory is still 167.8MB. Free memory was 118.6MB in the beginning and 117.7MB in the end (delta: 907.6kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 165.58ms. Allocated memory is still 167.8MB. Free memory was 117.7MB in the beginning and 107.5MB in the end (delta: 10.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 2638.09ms. Allocated memory is still 167.8MB. Free memory was 107.0MB in the beginning and 100.6MB in the end (delta: 6.4MB). Peak memory consumption was 4.4MB. Max. memory is 16.1GB. * Witness Printer took 67.21ms. Allocated memory is still 167.8MB. Free memory was 100.6MB in the beginning and 95.3MB in the end (delta: 5.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 18]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 18]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 22 locations, 29 edges, 2 error locations. Started 1 CEGAR loops. OverallTime: 2.5s, OverallIterations: 5, TraceHistogramMax: 21, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 9 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6 mSDsluCounter, 191 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 138 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 180 IncrementalHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 53 mSDtfsCounter, 180 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 501 GetRequests, 462 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=71occurred in iteration=4, InterpolantAutomatonStates: 47, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 501 NumberOfCodeBlocks, 261 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 730 ConstructedInterpolants, 0 QuantifiedInterpolants, 1113 SizeOfPredicates, 0 NumberOfNonLiveVariables, 256 ConjunctsInSsa, 23 ConjunctsInUnsatCore, 11 InterpolantComputations, 2 PerfectInterpolantSequences, 3909/4086 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: ((0 <= x) && (x <= 40)) RESULT: Ultimate proved your program to be correct! [2025-04-30 10:20:42,947 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE