./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/geo2-ll_unwindbound20.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/geo2-ll_unwindbound20.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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 ecea962a84fe32a20735cb1daf0369eacb7c8180f4f4ad62c19a1a49422dab47 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 20:53:56,923 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 20:53:57,011 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-11 20:53:57,017 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 20:53:57,019 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 20:53:57,032 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 20:53:57,033 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 20:53:57,033 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 20:53:57,034 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 20:53:57,034 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 20:53:57,034 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 20:53:57,034 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 20:53:57,035 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 20:53:57,035 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 20:53:57,035 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 20:53:57,035 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 20:53:57,035 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-11 20:53:57,036 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 20:53:57,036 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 20:53:57,038 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 20:53:57,040 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 20:53:57,040 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-11 20:53:57,040 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 20:53:57,040 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-11 20:53:57,040 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 20:53:57,041 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-11 20:53:57,041 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 20:53:57,041 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 20:53:57,041 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-11 20:53:57,041 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 20:53:57,041 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 20:53:57,041 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 20:53:57,042 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 20:53:57,042 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 20:53:57,042 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 20:53:57,042 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 20:53:57,042 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 20:53:57,042 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-11 20:53:57,042 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 20:53:57,043 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 20:53:57,043 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 20:53:57,043 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 20:53:57,043 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 20:53:57,044 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 20:53:57,044 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ecea962a84fe32a20735cb1daf0369eacb7c8180f4f4ad62c19a1a49422dab47 [2024-10-11 20:53:57,235 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 20:53:57,253 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 20:53:57,256 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 20:53:57,256 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 20:53:57,257 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 20:53:57,258 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/geo2-ll_unwindbound20.c [2024-10-11 20:53:58,433 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 20:53:58,582 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 20:53:58,583 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/geo2-ll_unwindbound20.c [2024-10-11 20:53:58,588 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/7550b2c0d/cfa0fb3b0c484622ade3688ca0e6ea86/FLAGf02e364ed [2024-10-11 20:53:58,998 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/7550b2c0d/cfa0fb3b0c484622ade3688ca0e6ea86 [2024-10-11 20:53:59,000 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 20:53:59,001 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 20:53:59,002 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 20:53:59,002 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 20:53:59,009 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 20:53:59,010 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 08:53:58" (1/1) ... [2024-10-11 20:53:59,011 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@368c08ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:53:59, skipping insertion in model container [2024-10-11 20:53:59,011 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 08:53:58" (1/1) ... [2024-10-11 20:53:59,025 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 20:53:59,176 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 20:53:59,186 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 20:53:59,201 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 20:53:59,226 INFO L204 MainTranslator]: Completed translation [2024-10-11 20:53:59,226 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:53:59 WrapperNode [2024-10-11 20:53:59,227 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 20:53:59,227 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 20:53:59,227 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 20:53:59,227 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 20:53:59,232 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:53:59" (1/1) ... [2024-10-11 20:53:59,237 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:53:59" (1/1) ... [2024-10-11 20:53:59,263 INFO L138 Inliner]: procedures = 14, calls = 10, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 51 [2024-10-11 20:53:59,263 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 20:53:59,264 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 20:53:59,264 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 20:53:59,264 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 20:53:59,275 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:53:59" (1/1) ... [2024-10-11 20:53:59,275 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:53:59" (1/1) ... [2024-10-11 20:53:59,280 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:53:59" (1/1) ... [2024-10-11 20:53:59,289 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-11 20:53:59,290 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:53:59" (1/1) ... [2024-10-11 20:53:59,290 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:53:59" (1/1) ... [2024-10-11 20:53:59,291 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:53:59" (1/1) ... [2024-10-11 20:53:59,293 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:53:59" (1/1) ... [2024-10-11 20:53:59,294 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:53:59" (1/1) ... [2024-10-11 20:53:59,294 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:53:59" (1/1) ... [2024-10-11 20:53:59,295 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 20:53:59,296 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 20:53:59,296 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 20:53:59,296 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 20:53:59,296 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:53:59" (1/1) ... [2024-10-11 20:53:59,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 20:53:59,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 20:53:59,321 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 20:53:59,324 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 20:53:59,357 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 20:53:59,358 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 20:53:59,358 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 20:53:59,358 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 20:53:59,358 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-10-11 20:53:59,358 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-10-11 20:53:59,405 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 20:53:59,407 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 20:53:59,528 INFO L? ?]: Removed 8 outVars from TransFormulas that were not future-live. [2024-10-11 20:53:59,528 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 20:53:59,552 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 20:53:59,553 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-11 20:53:59,553 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 08:53:59 BoogieIcfgContainer [2024-10-11 20:53:59,553 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 20:53:59,555 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 20:53:59,556 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 20:53:59,558 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 20:53:59,558 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 08:53:58" (1/3) ... [2024-10-11 20:53:59,559 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@123c6da5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 08:53:59, skipping insertion in model container [2024-10-11 20:53:59,559 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:53:59" (2/3) ... [2024-10-11 20:53:59,560 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@123c6da5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 08:53:59, skipping insertion in model container [2024-10-11 20:53:59,560 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 08:53:59" (3/3) ... [2024-10-11 20:53:59,561 INFO L112 eAbstractionObserver]: Analyzing ICFG geo2-ll_unwindbound20.c [2024-10-11 20:53:59,573 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 20:53:59,573 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-11 20:53:59,621 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 20:53:59,625 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;@10fb7e72, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 20:53:59,626 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-11 20:53:59,630 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 10 states have (on average 1.6) internal successors, (16), 12 states have internal predecessors, (16), 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) [2024-10-11 20:53:59,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-10-11 20:53:59,636 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 20:53:59,637 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-10-11 20:53:59,637 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-10-11 20:53:59,640 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:53:59,642 INFO L85 PathProgramCache]: Analyzing trace with hash 76144, now seen corresponding path program 1 times [2024-10-11 20:53:59,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 20:53:59,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062443770] [2024-10-11 20:53:59,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:53:59,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 20:53:59,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:53:59,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:53:59,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 20:53:59,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062443770] [2024-10-11 20:53:59,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062443770] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 20:53:59,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 20:53:59,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 20:53:59,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952995798] [2024-10-11 20:53:59,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 20:53:59,813 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 20:53:59,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 20:53:59,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 20:53:59,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 20:53:59,833 INFO L87 Difference]: Start difference. First operand has 16 states, 10 states have (on average 1.6) internal successors, (16), 12 states have internal predecessors, (16), 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 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:53:59,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 20:53:59,890 INFO L93 Difference]: Finished difference Result 35 states and 49 transitions. [2024-10-11 20:53:59,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 20:53:59,892 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 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 3 [2024-10-11 20:53:59,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 20:53:59,897 INFO L225 Difference]: With dead ends: 35 [2024-10-11 20:53:59,898 INFO L226 Difference]: Without dead ends: 17 [2024-10-11 20:53:59,900 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-11 20:53:59,902 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 4 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 20:53:59,903 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 34 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 20:53:59,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2024-10-11 20:53:59,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2024-10-11 20:53:59,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 13 states have internal predecessors, (14), 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) [2024-10-11 20:53:59,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2024-10-11 20:53:59,924 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 3 [2024-10-11 20:53:59,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 20:53:59,925 INFO L471 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2024-10-11 20:53:59,925 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:53:59,925 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2024-10-11 20:53:59,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-10-11 20:53:59,925 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 20:53:59,925 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:53:59,925 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 20:53:59,926 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-10-11 20:53:59,926 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:53:59,926 INFO L85 PathProgramCache]: Analyzing trace with hash -249734473, now seen corresponding path program 1 times [2024-10-11 20:53:59,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 20:53:59,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763591290] [2024-10-11 20:53:59,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:53:59,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 20:53:59,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:54:00,080 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-11 20:54:00,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:54:00,100 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:54:00,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 20:54:00,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763591290] [2024-10-11 20:54:00,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763591290] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 20:54:00,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [575642050] [2024-10-11 20:54:00,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:54:00,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 20:54:00,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 20:54:00,108 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 20:54:00,109 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-11 20:54:00,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:54:00,163 INFO L255 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-11 20:54:00,169 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:54:00,241 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:54:00,241 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 20:54:00,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [575642050] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 20:54:00,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 20:54:00,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-10-11 20:54:00,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052861951] [2024-10-11 20:54:00,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 20:54:00,243 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 20:54:00,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 20:54:00,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 20:54:00,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-10-11 20:54:00,244 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 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) [2024-10-11 20:54:00,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 20:54:00,291 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2024-10-11 20:54:00,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 20:54:00,291 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 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 13 [2024-10-11 20:54:00,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 20:54:00,292 INFO L225 Difference]: With dead ends: 17 [2024-10-11 20:54:00,292 INFO L226 Difference]: Without dead ends: 16 [2024-10-11 20:54:00,292 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2024-10-11 20:54:00,293 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 8 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 20:54:00,294 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 12 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 20:54:00,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2024-10-11 20:54:00,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2024-10-11 20:54:00,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 12 states have internal predecessors, (13), 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) [2024-10-11 20:54:00,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2024-10-11 20:54:00,297 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 13 [2024-10-11 20:54:00,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 20:54:00,298 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2024-10-11 20:54:00,298 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 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) [2024-10-11 20:54:00,298 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2024-10-11 20:54:00,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-10-11 20:54:00,300 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 20:54:00,300 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:54:00,316 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-11 20:54:00,500 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 20:54:00,501 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-10-11 20:54:00,502 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:54:00,502 INFO L85 PathProgramCache]: Analyzing trace with hash 848165970, now seen corresponding path program 1 times [2024-10-11 20:54:00,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 20:54:00,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789760105] [2024-10-11 20:54:00,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:54:00,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 20:54:00,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:54:00,623 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-11 20:54:00,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:54:00,647 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:54:00,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 20:54:00,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789760105] [2024-10-11 20:54:00,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789760105] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 20:54:00,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1243038044] [2024-10-11 20:54:00,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:54:00,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 20:54:00,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 20:54:00,650 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 20:54:00,650 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-11 20:54:00,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:54:00,696 INFO L255 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-11 20:54:00,697 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:54:00,747 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:54:00,747 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 20:54:00,801 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:54:00,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1243038044] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 20:54:00,802 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 20:54:00,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 5] total 12 [2024-10-11 20:54:00,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385538739] [2024-10-11 20:54:00,802 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 20:54:00,802 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-11 20:54:00,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 20:54:00,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-11 20:54:00,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2024-10-11 20:54:00,803 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 13 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 13 states have internal predecessors, (29), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-11 20:54:00,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 20:54:00,910 INFO L93 Difference]: Finished difference Result 46 states and 48 transitions. [2024-10-11 20:54:00,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-11 20:54:00,911 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 13 states have internal predecessors, (29), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 14 [2024-10-11 20:54:00,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 20:54:00,911 INFO L225 Difference]: With dead ends: 46 [2024-10-11 20:54:00,912 INFO L226 Difference]: Without dead ends: 45 [2024-10-11 20:54:00,912 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=114, Invalid=228, Unknown=0, NotChecked=0, Total=342 [2024-10-11 20:54:00,913 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 35 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 20:54:00,913 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 39 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 20:54:00,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-10-11 20:54:00,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2024-10-11 20:54:00,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 36 states have (on average 1.0277777777777777) internal successors, (37), 36 states have internal predecessors, (37), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-10-11 20:54:00,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 45 transitions. [2024-10-11 20:54:00,919 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 45 transitions. Word has length 14 [2024-10-11 20:54:00,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 20:54:00,920 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 45 transitions. [2024-10-11 20:54:00,920 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 13 states have internal predecessors, (29), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-11 20:54:00,920 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 45 transitions. [2024-10-11 20:54:00,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-10-11 20:54:00,921 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 20:54:00,921 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1] [2024-10-11 20:54:00,934 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-11 20:54:01,121 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 20:54:01,122 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-10-11 20:54:01,122 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:54:01,122 INFO L85 PathProgramCache]: Analyzing trace with hash -938434659, now seen corresponding path program 2 times [2024-10-11 20:54:01,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 20:54:01,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59702016] [2024-10-11 20:54:01,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:54:01,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 20:54:01,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:54:01,370 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-11 20:54:01,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:54:01,376 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-11 20:54:01,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:54:01,386 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-10-11 20:54:01,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:54:01,390 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-11 20:54:01,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:54:01,394 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-10-11 20:54:01,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 20:54:01,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59702016] [2024-10-11 20:54:01,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59702016] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 20:54:01,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1808580138] [2024-10-11 20:54:01,395 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 20:54:01,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 20:54:01,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 20:54:01,396 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 20:54:01,397 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-11 20:54:01,450 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 20:54:01,451 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 20:54:01,452 INFO L255 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-11 20:54:01,453 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:54:01,544 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:54:01,544 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 20:54:01,711 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-10-11 20:54:01,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1808580138] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 20:54:01,712 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 20:54:01,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 11] total 24 [2024-10-11 20:54:01,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800455316] [2024-10-11 20:54:01,712 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 20:54:01,712 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-10-11 20:54:01,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 20:54:01,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-10-11 20:54:01,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=423, Unknown=0, NotChecked=0, Total=600 [2024-10-11 20:54:01,714 INFO L87 Difference]: Start difference. First operand 45 states and 45 transitions. Second operand has 25 states, 24 states have (on average 2.8333333333333335) internal successors, (68), 25 states have internal predecessors, (68), 8 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (12), 8 states have call predecessors, (12), 8 states have call successors, (12) [2024-10-11 20:54:02,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 20:54:02,038 INFO L93 Difference]: Finished difference Result 106 states and 111 transitions. [2024-10-11 20:54:02,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-10-11 20:54:02,039 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 2.8333333333333335) internal successors, (68), 25 states have internal predecessors, (68), 8 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (12), 8 states have call predecessors, (12), 8 states have call successors, (12) Word has length 44 [2024-10-11 20:54:02,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 20:54:02,040 INFO L225 Difference]: With dead ends: 106 [2024-10-11 20:54:02,040 INFO L226 Difference]: Without dead ends: 105 [2024-10-11 20:54:02,041 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 429 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=576, Invalid=1230, Unknown=0, NotChecked=0, Total=1806 [2024-10-11 20:54:02,041 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 77 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 20:54:02,042 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 82 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 20:54:02,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2024-10-11 20:54:02,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2024-10-11 20:54:02,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 84 states have (on average 1.0119047619047619) internal successors, (85), 84 states have internal predecessors, (85), 10 states have call successors, (10), 10 states have call predecessors, (10), 10 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-10-11 20:54:02,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 105 transitions. [2024-10-11 20:54:02,059 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 105 transitions. Word has length 44 [2024-10-11 20:54:02,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 20:54:02,059 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 105 transitions. [2024-10-11 20:54:02,059 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 2.8333333333333335) internal successors, (68), 25 states have internal predecessors, (68), 8 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (12), 8 states have call predecessors, (12), 8 states have call successors, (12) [2024-10-11 20:54:02,059 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 105 transitions. [2024-10-11 20:54:02,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-10-11 20:54:02,062 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 20:54:02,062 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1] [2024-10-11 20:54:02,077 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-11 20:54:02,263 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 20:54:02,264 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-10-11 20:54:02,264 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:54:02,264 INFO L85 PathProgramCache]: Analyzing trace with hash -1041181069, now seen corresponding path program 3 times [2024-10-11 20:54:02,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 20:54:02,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042393302] [2024-10-11 20:54:02,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:54:02,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 20:54:02,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:54:02,786 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-11 20:54:02,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:54:02,790 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-11 20:54:02,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:54:02,793 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-10-11 20:54:02,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:54:02,796 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-11 20:54:02,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:54:02,799 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-10-11 20:54:02,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:54:02,801 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-10-11 20:54:02,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:54:02,804 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-10-11 20:54:02,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:54:02,807 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-10-11 20:54:02,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:54:02,810 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-10-11 20:54:02,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:54:02,812 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-10-11 20:54:02,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:54:02,817 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-10-11 20:54:02,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 20:54:02,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042393302] [2024-10-11 20:54:02,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042393302] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 20:54:02,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1681873822] [2024-10-11 20:54:02,819 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 20:54:02,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 20:54:02,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 20:54:02,820 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 20:54:02,821 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-11 20:54:02,864 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-11 20:54:02,864 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 20:54:02,865 INFO L255 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-11 20:54:02,867 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:54:02,926 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 387 trivial. 0 not checked. [2024-10-11 20:54:02,926 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 20:54:02,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1681873822] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 20:54:02,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 20:54:02,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [24] total 27 [2024-10-11 20:54:02,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648851116] [2024-10-11 20:54:02,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 20:54:02,927 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 20:54:02,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 20:54:02,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 20:54:02,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=547, Unknown=0, NotChecked=0, Total=756 [2024-10-11 20:54:02,928 INFO L87 Difference]: Start difference. First operand 105 states and 105 transitions. Second operand has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-11 20:54:02,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 20:54:02,971 INFO L93 Difference]: Finished difference Result 105 states and 105 transitions. [2024-10-11 20:54:02,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 20:54:02,972 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 104 [2024-10-11 20:54:02,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 20:54:02,972 INFO L225 Difference]: With dead ends: 105 [2024-10-11 20:54:02,972 INFO L226 Difference]: Without dead ends: 0 [2024-10-11 20:54:02,973 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=221, Invalid=649, Unknown=0, NotChecked=0, Total=870 [2024-10-11 20:54:02,974 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 4 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 20:54:02,974 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 16 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 20:54:02,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-10-11 20:54:02,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-10-11 20:54:02,974 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) [2024-10-11 20:54:02,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-10-11 20:54:02,975 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 104 [2024-10-11 20:54:02,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 20:54:02,975 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-11 20:54:02,975 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-11 20:54:02,975 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-10-11 20:54:02,975 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-10-11 20:54:02,979 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2024-10-11 20:54:02,979 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2024-10-11 20:54:02,993 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-11 20:54:03,179 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 20:54:03,182 INFO L407 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2024-10-11 20:54:03,184 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-10-11 20:54:03,256 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-11 20:54:03,266 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 08:54:03 BoogieIcfgContainer [2024-10-11 20:54:03,266 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-11 20:54:03,267 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-11 20:54:03,267 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-11 20:54:03,267 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-11 20:54:03,267 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 08:53:59" (3/4) ... [2024-10-11 20:54:03,268 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-11 20:54:03,271 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2024-10-11 20:54:03,273 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2024-10-11 20:54:03,273 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-10-11 20:54:03,274 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-10-11 20:54:03,274 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-10-11 20:54:03,329 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-11 20:54:03,329 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/witness.yml [2024-10-11 20:54:03,329 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-11 20:54:03,329 INFO L158 Benchmark]: Toolchain (without parser) took 4328.68ms. Allocated memory was 169.9MB in the beginning and 207.6MB in the end (delta: 37.7MB). Free memory was 108.2MB in the beginning and 94.0MB in the end (delta: 14.2MB). Peak memory consumption was 52.7MB. Max. memory is 16.1GB. [2024-10-11 20:54:03,330 INFO L158 Benchmark]: CDTParser took 0.77ms. Allocated memory is still 92.3MB. Free memory was 47.2MB in the beginning and 47.1MB in the end (delta: 77.0kB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-11 20:54:03,330 INFO L158 Benchmark]: CACSL2BoogieTranslator took 225.15ms. Allocated memory is still 169.9MB. Free memory was 108.2MB in the beginning and 140.1MB in the end (delta: -31.9MB). Peak memory consumption was 17.0MB. Max. memory is 16.1GB. [2024-10-11 20:54:03,330 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.13ms. Allocated memory is still 169.9MB. Free memory was 140.1MB in the beginning and 138.4MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-11 20:54:03,330 INFO L158 Benchmark]: Boogie Preprocessor took 31.43ms. Allocated memory is still 169.9MB. Free memory was 138.4MB in the beginning and 137.1MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-11 20:54:03,330 INFO L158 Benchmark]: RCFGBuilder took 257.87ms. Allocated memory is still 169.9MB. Free memory was 137.1MB in the beginning and 125.0MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-11 20:54:03,331 INFO L158 Benchmark]: TraceAbstraction took 3711.40ms. Allocated memory was 169.9MB in the beginning and 207.6MB in the end (delta: 37.7MB). Free memory was 125.0MB in the beginning and 98.2MB in the end (delta: 26.8MB). Peak memory consumption was 67.2MB. Max. memory is 16.1GB. [2024-10-11 20:54:03,331 INFO L158 Benchmark]: Witness Printer took 62.50ms. Allocated memory is still 207.6MB. Free memory was 98.2MB in the beginning and 94.0MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-11 20:54:03,332 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.77ms. Allocated memory is still 92.3MB. Free memory was 47.2MB in the beginning and 47.1MB in the end (delta: 77.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 225.15ms. Allocated memory is still 169.9MB. Free memory was 108.2MB in the beginning and 140.1MB in the end (delta: -31.9MB). Peak memory consumption was 17.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.13ms. Allocated memory is still 169.9MB. Free memory was 140.1MB in the beginning and 138.4MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 31.43ms. Allocated memory is still 169.9MB. Free memory was 138.4MB in the beginning and 137.1MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 257.87ms. Allocated memory is still 169.9MB. Free memory was 137.1MB in the beginning and 125.0MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 3711.40ms. Allocated memory was 169.9MB in the beginning and 207.6MB in the end (delta: 37.7MB). Free memory was 125.0MB in the beginning and 98.2MB in the end (delta: 26.8MB). Peak memory consumption was 67.2MB. Max. memory is 16.1GB. * Witness Printer took 62.50ms. Allocated memory is still 207.6MB. Free memory was 98.2MB in the beginning and 94.0MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. 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: 34]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 34]: 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, 16 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 3.6s, OverallIterations: 5, TraceHistogramMax: 11, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 128 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 128 mSDsluCounter, 183 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 145 mSDsCounter, 13 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 209 IncrementalHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 13 mSolverCounterUnsat, 38 mSDtfsCounter, 209 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 335 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 692 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=105occurred in iteration=4, InterpolantAutomatonStates: 63, 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, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 353 NumberOfCodeBlocks, 263 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 400 ConstructedInterpolants, 0 QuantifiedInterpolants, 864 SizeOfPredicates, 16 NumberOfNonLiveVariables, 308 ConjunctsInSsa, 25 ConjunctsInUnsatCore, 11 InterpolantComputations, 3 PerfectInterpolantSequences, 710/1189 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 - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: (((1 <= counter) && (counter <= 20)) || (counter == 0)) RESULT: Ultimate proved your program to be correct! [2024-10-11 20:54:03,353 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE