./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/fermat1-ll_valuebound5.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 798a7b37 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/fermat1-ll_valuebound5.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-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 ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ee7efdbf8e082fecbcf7a0b7187f01592d4dffd310592a1175678347e3e281b9 --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-03 13:53:18,780 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-03 13:53:18,828 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-03 13:53:18,832 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-03 13:53:18,832 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-03 13:53:18,855 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-03 13:53:18,855 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-03 13:53:18,855 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-03 13:53:18,856 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-03 13:53:18,856 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-03 13:53:18,856 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-03 13:53:18,856 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-03 13:53:18,856 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-03 13:53:18,856 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-03 13:53:18,856 INFO L153 SettingsManager]: * Use SBE=true [2025-03-03 13:53:18,857 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-03 13:53:18,857 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-03 13:53:18,857 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-03 13:53:18,857 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-03 13:53:18,857 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-03 13:53:18,857 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-03 13:53:18,857 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-03 13:53:18,857 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-03 13:53:18,857 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-03 13:53:18,857 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-03 13:53:18,857 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-03 13:53:18,857 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-03 13:53:18,857 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-03 13:53:18,857 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-03 13:53:18,857 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-03 13:53:18,857 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-03 13:53:18,857 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-03 13:53:18,858 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 13:53:18,859 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-03 13:53:18,859 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-03 13:53:18,859 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-03 13:53:18,859 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-03 13:53:18,859 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-03 13:53:18,859 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-03 13:53:18,859 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-03 13:53:18,859 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-03 13:53:18,859 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-03 13:53:18,859 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-03 13:53:18,859 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 ! call(reach_error())) ) 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 -> ee7efdbf8e082fecbcf7a0b7187f01592d4dffd310592a1175678347e3e281b9 [2025-03-03 13:53:19,051 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-03 13:53:19,059 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-03 13:53:19,060 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-03 13:53:19,060 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-03 13:53:19,061 INFO L274 PluginConnector]: CDTParser initialized [2025-03-03 13:53:19,061 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/fermat1-ll_valuebound5.c [2025-03-03 13:53:20,167 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7168886a5/d6a258b334a04294b76a45c962b66154/FLAG72b58910b [2025-03-03 13:53:20,390 INFO L384 CDTParser]: Found 1 translation units. [2025-03-03 13:53:20,390 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/fermat1-ll_valuebound5.c [2025-03-03 13:53:20,397 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7168886a5/d6a258b334a04294b76a45c962b66154/FLAG72b58910b [2025-03-03 13:53:20,729 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7168886a5/d6a258b334a04294b76a45c962b66154 [2025-03-03 13:53:20,731 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-03 13:53:20,732 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-03 13:53:20,734 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-03 13:53:20,735 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-03 13:53:20,738 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-03 13:53:20,738 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 01:53:20" (1/1) ... [2025-03-03 13:53:20,741 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22c49444 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 01:53:20, skipping insertion in model container [2025-03-03 13:53:20,741 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 01:53:20" (1/1) ... [2025-03-03 13:53:20,752 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-03 13:53:20,849 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/fermat1-ll_valuebound5.c[535,548] [2025-03-03 13:53:20,860 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 13:53:20,866 INFO L200 MainTranslator]: Completed pre-run [2025-03-03 13:53:20,872 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/fermat1-ll_valuebound5.c[535,548] [2025-03-03 13:53:20,877 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 13:53:20,886 INFO L204 MainTranslator]: Completed translation [2025-03-03 13:53:20,887 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 01:53:20 WrapperNode [2025-03-03 13:53:20,887 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-03 13:53:20,888 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-03 13:53:20,888 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-03 13:53:20,888 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-03 13:53:20,891 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 01:53:20" (1/1) ... [2025-03-03 13:53:20,895 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 01:53:20" (1/1) ... [2025-03-03 13:53:20,904 INFO L138 Inliner]: procedures = 14, calls = 15, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 48 [2025-03-03 13:53:20,905 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-03 13:53:20,905 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-03 13:53:20,905 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-03 13:53:20,905 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-03 13:53:20,910 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 01:53:20" (1/1) ... [2025-03-03 13:53:20,910 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 01:53:20" (1/1) ... [2025-03-03 13:53:20,911 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 01:53:20" (1/1) ... [2025-03-03 13:53:20,917 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-03-03 13:53:20,917 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 01:53:20" (1/1) ... [2025-03-03 13:53:20,917 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 01:53:20" (1/1) ... [2025-03-03 13:53:20,919 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 01:53:20" (1/1) ... [2025-03-03 13:53:20,920 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 01:53:20" (1/1) ... [2025-03-03 13:53:20,920 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 01:53:20" (1/1) ... [2025-03-03 13:53:20,920 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 01:53:20" (1/1) ... [2025-03-03 13:53:20,921 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-03 13:53:20,921 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-03 13:53:20,922 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-03 13:53:20,922 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-03 13:53:20,922 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 01:53:20" (1/1) ... [2025-03-03 13:53:20,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 13:53:20,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 13:53:20,946 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-03 13:53:20,948 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-03 13:53:20,965 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-03 13:53:20,965 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-03 13:53:20,965 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-03 13:53:20,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-03 13:53:20,966 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-03 13:53:20,966 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-03 13:53:20,966 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-03-03 13:53:20,966 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-03-03 13:53:21,001 INFO L256 CfgBuilder]: Building ICFG [2025-03-03 13:53:21,002 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-03 13:53:21,097 INFO L? ?]: Removed 7 outVars from TransFormulas that were not future-live. [2025-03-03 13:53:21,097 INFO L307 CfgBuilder]: Performing block encoding [2025-03-03 13:53:21,102 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-03 13:53:21,103 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-03 13:53:21,103 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 01:53:21 BoogieIcfgContainer [2025-03-03 13:53:21,103 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-03 13:53:21,104 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-03 13:53:21,105 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-03 13:53:21,107 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-03 13:53:21,108 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.03 01:53:20" (1/3) ... [2025-03-03 13:53:21,108 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3aa05fb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 01:53:21, skipping insertion in model container [2025-03-03 13:53:21,108 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 01:53:20" (2/3) ... [2025-03-03 13:53:21,108 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3aa05fb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 01:53:21, skipping insertion in model container [2025-03-03 13:53:21,108 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 01:53:21" (3/3) ... [2025-03-03 13:53:21,109 INFO L128 eAbstractionObserver]: Analyzing ICFG fermat1-ll_valuebound5.c [2025-03-03 13:53:21,120 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-03 13:53:21,122 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG fermat1-ll_valuebound5.c that has 3 procedures, 29 locations, 1 initial locations, 3 loop locations, and 1 error locations. [2025-03-03 13:53:21,159 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-03 13:53:21,167 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;@4915a88d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-03 13:53:21,167 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-03 13:53:21,170 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 20 states have (on average 1.3) internal successors, (26), 18 states have internal predecessors, (26), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2025-03-03 13:53:21,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2025-03-03 13:53:21,174 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 13:53:21,175 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 13:53:21,175 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 13:53:21,178 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 13:53:21,178 INFO L85 PathProgramCache]: Analyzing trace with hash 2102843609, now seen corresponding path program 1 times [2025-03-03 13:53:21,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 13:53:21,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179718563] [2025-03-03 13:53:21,185 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 13:53:21,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 13:53:21,233 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-03-03 13:53:21,245 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-03-03 13:53:21,245 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 13:53:21,245 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:53:21,297 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-03-03 13:53:21,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 13:53:21,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179718563] [2025-03-03 13:53:21,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179718563] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 13:53:21,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1321939826] [2025-03-03 13:53:21,300 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 13:53:21,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:53:21,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 13:53:21,302 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 13:53:21,304 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-03 13:53:21,343 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-03-03 13:53:21,364 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-03-03 13:53:21,365 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 13:53:21,365 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:53:21,366 INFO L256 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-03 13:53:21,369 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 13:53:21,381 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-03-03 13:53:21,381 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 13:53:21,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1321939826] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 13:53:21,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 13:53:21,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-03-03 13:53:21,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379029748] [2025-03-03 13:53:21,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 13:53:21,386 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-03 13:53:21,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 13:53:21,399 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-03 13:53:21,400 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-03 13:53:21,401 INFO L87 Difference]: Start difference. First operand has 29 states, 20 states have (on average 1.3) internal successors, (26), 18 states have internal predecessors, (26), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2025-03-03 13:53:21,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 13:53:21,418 INFO L93 Difference]: Finished difference Result 55 states and 88 transitions. [2025-03-03 13:53:21,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-03 13:53:21,420 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 28 [2025-03-03 13:53:21,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 13:53:21,424 INFO L225 Difference]: With dead ends: 55 [2025-03-03 13:53:21,424 INFO L226 Difference]: Without dead ends: 25 [2025-03-03 13:53:21,426 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-03 13:53:21,427 INFO L435 NwaCegarLoop]: 37 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 13:53:21,428 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 13:53:21,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2025-03-03 13:53:21,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2025-03-03 13:53:21,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 15 states have internal predecessors, (18), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2025-03-03 13:53:21,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 33 transitions. [2025-03-03 13:53:21,459 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 33 transitions. Word has length 28 [2025-03-03 13:53:21,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 13:53:21,459 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 33 transitions. [2025-03-03 13:53:21,459 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2025-03-03 13:53:21,459 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 33 transitions. [2025-03-03 13:53:21,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2025-03-03 13:53:21,460 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 13:53:21,461 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 13:53:21,467 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-03 13:53:21,661 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2025-03-03 13:53:21,661 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 13:53:21,662 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 13:53:21,662 INFO L85 PathProgramCache]: Analyzing trace with hash -1806795465, now seen corresponding path program 1 times [2025-03-03 13:53:21,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 13:53:21,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266192239] [2025-03-03 13:53:21,662 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 13:53:21,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 13:53:21,670 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-03-03 13:53:21,706 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-03-03 13:53:21,709 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 13:53:21,709 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-03 13:53:21,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1362635097] [2025-03-03 13:53:21,712 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 13:53:21,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:53:21,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 13:53:21,714 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 13:53:21,715 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-03 13:53:21,746 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-03-03 13:53:21,766 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-03-03 13:53:21,767 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 13:53:21,767 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:53:21,768 INFO L256 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-03 13:53:21,770 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 13:53:21,922 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-03-03 13:53:21,922 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 13:53:21,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 13:53:21,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266192239] [2025-03-03 13:53:21,923 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-03 13:53:21,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1362635097] [2025-03-03 13:53:21,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1362635097] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 13:53:21,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 13:53:21,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-03 13:53:21,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772907360] [2025-03-03 13:53:21,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 13:53:21,924 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-03 13:53:21,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 13:53:21,924 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-03 13:53:21,924 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-03 13:53:21,924 INFO L87 Difference]: Start difference. First operand 25 states and 33 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2025-03-03 13:53:24,388 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2025-03-03 13:53:24,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 13:53:24,397 INFO L93 Difference]: Finished difference Result 37 states and 50 transitions. [2025-03-03 13:53:24,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 13:53:24,397 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 28 [2025-03-03 13:53:24,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 13:53:24,398 INFO L225 Difference]: With dead ends: 37 [2025-03-03 13:53:24,398 INFO L226 Difference]: Without dead ends: 35 [2025-03-03 13:53:24,398 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-03 13:53:24,398 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 6 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2025-03-03 13:53:24,398 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 85 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2025-03-03 13:53:24,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2025-03-03 13:53:24,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2025-03-03 13:53:24,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 20 states have (on average 1.35) internal successors, (27), 21 states have internal predecessors, (27), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2025-03-03 13:53:24,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 48 transitions. [2025-03-03 13:53:24,411 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 48 transitions. Word has length 28 [2025-03-03 13:53:24,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 13:53:24,412 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 48 transitions. [2025-03-03 13:53:24,412 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2025-03-03 13:53:24,412 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 48 transitions. [2025-03-03 13:53:24,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2025-03-03 13:53:24,413 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 13:53:24,413 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 13:53:24,419 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-03 13:53:24,617 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2025-03-03 13:53:24,617 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 13:53:24,617 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 13:53:24,618 INFO L85 PathProgramCache]: Analyzing trace with hash -182435783, now seen corresponding path program 1 times [2025-03-03 13:53:24,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 13:53:24,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523083949] [2025-03-03 13:53:24,618 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 13:53:24,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 13:53:24,622 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-03-03 13:53:24,641 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-03-03 13:53:24,642 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 13:53:24,642 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:53:24,915 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-03-03 13:53:24,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 13:53:24,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523083949] [2025-03-03 13:53:24,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523083949] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 13:53:24,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [865136060] [2025-03-03 13:53:24,916 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 13:53:24,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:53:24,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 13:53:24,919 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 13:53:24,920 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-03 13:53:24,942 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-03-03 13:53:24,954 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-03-03 13:53:24,954 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 13:53:24,954 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:53:24,957 INFO L256 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-03 13:53:24,959 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 13:53:25,024 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-03-03 13:53:25,025 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 13:53:25,127 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-03-03 13:53:25,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [865136060] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 13:53:25,127 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 13:53:25,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 12 [2025-03-03 13:53:25,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128581394] [2025-03-03 13:53:25,128 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 13:53:25,128 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-03 13:53:25,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 13:53:25,128 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-03 13:53:25,128 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2025-03-03 13:53:25,129 INFO L87 Difference]: Start difference. First operand 35 states and 48 transitions. Second operand has 12 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 8 states have internal predecessors, (20), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (7), 4 states have call predecessors, (7), 1 states have call successors, (7) [2025-03-03 13:53:25,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 13:53:25,233 INFO L93 Difference]: Finished difference Result 35 states and 48 transitions. [2025-03-03 13:53:25,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-03 13:53:25,233 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 8 states have internal predecessors, (20), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (7), 4 states have call predecessors, (7), 1 states have call successors, (7) Word has length 34 [2025-03-03 13:53:25,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 13:53:25,234 INFO L225 Difference]: With dead ends: 35 [2025-03-03 13:53:25,234 INFO L226 Difference]: Without dead ends: 0 [2025-03-03 13:53:25,234 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 63 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2025-03-03 13:53:25,234 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 9 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 13:53:25,235 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 155 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 13:53:25,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2025-03-03 13:53:25,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2025-03-03 13:53:25,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 13:53:25,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2025-03-03 13:53:25,235 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 34 [2025-03-03 13:53:25,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 13:53:25,235 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-03-03 13:53:25,235 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 8 states have internal predecessors, (20), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (7), 4 states have call predecessors, (7), 1 states have call successors, (7) [2025-03-03 13:53:25,235 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2025-03-03 13:53:25,235 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2025-03-03 13:53:25,239 INFO L782 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2025-03-03 13:53:25,245 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-03 13:53:25,440 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:53:25,442 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2025-03-03 13:53:25,443 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2025-03-03 13:53:25,497 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-03 13:53:25,507 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.03 01:53:25 BoogieIcfgContainer [2025-03-03 13:53:25,507 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-03 13:53:25,508 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-03 13:53:25,508 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-03 13:53:25,508 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-03 13:53:25,508 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 01:53:21" (3/4) ... [2025-03-03 13:53:25,510 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-03-03 13:53:25,514 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2025-03-03 13:53:25,514 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2025-03-03 13:53:25,516 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2025-03-03 13:53:25,517 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2025-03-03 13:53:25,517 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2025-03-03 13:53:25,518 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-03-03 13:53:25,573 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-03-03 13:53:25,573 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-03-03 13:53:25,573 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-03 13:53:25,574 INFO L158 Benchmark]: Toolchain (without parser) took 4842.00ms. Allocated memory is still 142.6MB. Free memory was 104.7MB in the beginning and 94.8MB in the end (delta: 9.9MB). Peak memory consumption was 8.2MB. Max. memory is 16.1GB. [2025-03-03 13:53:25,576 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 201.3MB. Free memory is still 127.6MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-03 13:53:25,576 INFO L158 Benchmark]: CACSL2BoogieTranslator took 152.72ms. Allocated memory is still 142.6MB. Free memory was 104.7MB in the beginning and 93.5MB in the end (delta: 11.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-03 13:53:25,577 INFO L158 Benchmark]: Boogie Procedure Inliner took 17.36ms. Allocated memory is still 142.6MB. Free memory was 93.5MB in the beginning and 92.5MB in the end (delta: 1.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-03 13:53:25,577 INFO L158 Benchmark]: Boogie Preprocessor took 15.63ms. Allocated memory is still 142.6MB. Free memory was 92.5MB in the beginning and 91.4MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-03 13:53:25,577 INFO L158 Benchmark]: IcfgBuilder took 181.45ms. Allocated memory is still 142.6MB. Free memory was 91.4MB in the beginning and 78.9MB in the end (delta: 12.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-03 13:53:25,577 INFO L158 Benchmark]: TraceAbstraction took 4402.79ms. Allocated memory is still 142.6MB. Free memory was 78.9MB in the beginning and 101.2MB in the end (delta: -22.2MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-03 13:53:25,578 INFO L158 Benchmark]: Witness Printer took 65.64ms. Allocated memory is still 142.6MB. Free memory was 101.2MB in the beginning and 94.8MB in the end (delta: 6.4MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-03 13:53:25,578 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 201.3MB. Free memory is still 127.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 152.72ms. Allocated memory is still 142.6MB. Free memory was 104.7MB in the beginning and 93.5MB in the end (delta: 11.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 17.36ms. Allocated memory is still 142.6MB. Free memory was 93.5MB in the beginning and 92.5MB in the end (delta: 1.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 15.63ms. Allocated memory is still 142.6MB. Free memory was 92.5MB in the beginning and 91.4MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 181.45ms. Allocated memory is still 142.6MB. Free memory was 91.4MB in the beginning and 78.9MB in the end (delta: 12.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 4402.79ms. Allocated memory is still 142.6MB. Free memory was 78.9MB in the beginning and 101.2MB in the end (delta: -22.2MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 65.64ms. Allocated memory is still 142.6MB. Free memory was 101.2MB in the beginning and 94.8MB in the end (delta: 6.4MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 14]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 4.3s, OverallIterations: 3, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 20 SdHoareTripleChecker+Valid, 2.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 15 mSDsluCounter, 277 SdHoareTripleChecker+Invalid, 2.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 198 mSDsCounter, 14 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 127 IncrementalHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 14 mSolverCounterUnsat, 79 mSDtfsCounter, 127 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 133 GetRequests, 116 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred in iteration=2, InterpolantAutomatonStates: 13, 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 180 NumberOfCodeBlocks, 180 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 180 ConstructedInterpolants, 0 QuantifiedInterpolants, 433 SizeOfPredicates, 2 NumberOfNonLiveVariables, 239 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 141/150 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 1 specifications checked. All of them hold - InvariantResult [Line: 35]: Location Invariant Derived location invariant: ((((((long long) A * 4) + ((__int128) r * 4)) + ((__int128) v * v)) + ((__int128) 2 * u)) == (((__int128) 2 * v) + ((__int128) u * u))) - InvariantResult [Line: 40]: Location Invariant Derived location invariant: ((((((long long) A * 4) + ((__int128) r * 4)) + ((__int128) v * v)) + ((__int128) 2 * u)) == (((__int128) 2 * v) + ((__int128) u * u))) - InvariantResult [Line: 35]: Location Invariant Derived location invariant: ((((((long long) A * 4) + ((__int128) r * 4)) + ((__int128) v * v)) + ((__int128) 2 * u)) == (((__int128) 2 * v) + ((__int128) u * u))) RESULT: Ultimate proved your program to be correct! [2025-03-03 13:53:25,593 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/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