./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-floats-scientific-comp/loop1-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e2fb8bed Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/loop-floats-scientific-comp/loop1-1.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 259166f87cdd7847094aaf95c1b6c2506a27351f8fceb58c6f5bc2db5fb43f03 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 03:14:37,555 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 03:14:37,604 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-08 03:14:37,608 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 03:14:37,610 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 03:14:37,627 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 03:14:37,629 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 03:14:37,629 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 03:14:37,629 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 03:14:37,629 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 03:14:37,629 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 03:14:37,629 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 03:14:37,630 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 03:14:37,630 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 03:14:37,630 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 03:14:37,630 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 03:14:37,630 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 03:14:37,630 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-08 03:14:37,630 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 03:14:37,630 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-08 03:14:37,630 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 03:14:37,630 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 03:14:37,631 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 03:14:37,631 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 03:14:37,631 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-08 03:14:37,631 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 03:14:37,631 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 03:14:37,631 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 03:14:37,631 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 03:14:37,631 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 03:14:37,631 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 03:14:37,631 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 03:14:37,631 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 03:14:37,632 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 03:14:37,632 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 03:14:37,632 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 03:14:37,632 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 03:14:37,632 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 03:14:37,632 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 03:14:37,632 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 03:14:37,632 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 03:14:37,632 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 03:14:37,632 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 03:14:37,632 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 -> 259166f87cdd7847094aaf95c1b6c2506a27351f8fceb58c6f5bc2db5fb43f03 [2025-03-08 03:14:37,863 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 03:14:37,871 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 03:14:37,872 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 03:14:37,873 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 03:14:37,873 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 03:14:37,875 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-floats-scientific-comp/loop1-1.c [2025-03-08 03:14:38,984 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91539615e/193708fe304f45079143c9cff325b51e/FLAG5d92c1112 [2025-03-08 03:14:39,193 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 03:14:39,194 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-floats-scientific-comp/loop1-1.c [2025-03-08 03:14:39,200 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91539615e/193708fe304f45079143c9cff325b51e/FLAG5d92c1112 [2025-03-08 03:14:39,210 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91539615e/193708fe304f45079143c9cff325b51e [2025-03-08 03:14:39,212 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 03:14:39,213 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 03:14:39,215 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 03:14:39,216 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 03:14:39,219 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 03:14:39,220 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 03:14:39" (1/1) ... [2025-03-08 03:14:39,220 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d02c575 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:14:39, skipping insertion in model container [2025-03-08 03:14:39,222 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 03:14:39" (1/1) ... [2025-03-08 03:14:39,230 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 03:14:39,321 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/loop-floats-scientific-comp/loop1-1.c[497,510] [2025-03-08 03:14:39,336 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 03:14:39,343 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 03:14:39,350 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/loop-floats-scientific-comp/loop1-1.c[497,510] [2025-03-08 03:14:39,353 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 03:14:39,364 INFO L204 MainTranslator]: Completed translation [2025-03-08 03:14:39,365 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:14:39 WrapperNode [2025-03-08 03:14:39,365 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 03:14:39,365 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 03:14:39,365 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 03:14:39,366 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 03:14:39,371 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:14:39" (1/1) ... [2025-03-08 03:14:39,375 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:14:39" (1/1) ... [2025-03-08 03:14:39,387 INFO L138 Inliner]: procedures = 15, calls = 10, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 39 [2025-03-08 03:14:39,388 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 03:14:39,388 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 03:14:39,389 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 03:14:39,389 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 03:14:39,394 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:14:39" (1/1) ... [2025-03-08 03:14:39,394 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:14:39" (1/1) ... [2025-03-08 03:14:39,395 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:14:39" (1/1) ... [2025-03-08 03:14:39,407 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]. [2025-03-08 03:14:39,407 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:14:39" (1/1) ... [2025-03-08 03:14:39,407 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:14:39" (1/1) ... [2025-03-08 03:14:39,410 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:14:39" (1/1) ... [2025-03-08 03:14:39,410 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:14:39" (1/1) ... [2025-03-08 03:14:39,411 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:14:39" (1/1) ... [2025-03-08 03:14:39,412 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:14:39" (1/1) ... [2025-03-08 03:14:39,413 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 03:14:39,415 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 03:14:39,415 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 03:14:39,415 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 03:14:39,416 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:14:39" (1/1) ... [2025-03-08 03:14:39,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 03:14:39,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 03:14:39,441 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) [2025-03-08 03:14:39,443 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 [2025-03-08 03:14:39,459 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 03:14:39,459 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-08 03:14:39,459 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-08 03:14:39,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-08 03:14:39,459 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 03:14:39,459 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 03:14:39,508 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 03:14:39,510 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 03:14:39,607 INFO L? ?]: Removed 10 outVars from TransFormulas that were not future-live. [2025-03-08 03:14:39,607 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 03:14:39,613 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 03:14:39,614 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 03:14:39,614 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 03:14:39 BoogieIcfgContainer [2025-03-08 03:14:39,614 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 03:14:39,617 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 03:14:39,617 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 03:14:39,621 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 03:14:39,621 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 03:14:39" (1/3) ... [2025-03-08 03:14:39,622 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76543c01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 03:14:39, skipping insertion in model container [2025-03-08 03:14:39,622 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:14:39" (2/3) ... [2025-03-08 03:14:39,623 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76543c01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 03:14:39, skipping insertion in model container [2025-03-08 03:14:39,623 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 03:14:39" (3/3) ... [2025-03-08 03:14:39,624 INFO L128 eAbstractionObserver]: Analyzing ICFG loop1-1.c [2025-03-08 03:14:39,636 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 03:14:39,638 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG loop1-1.c that has 2 procedures, 19 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-08 03:14:39,682 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 03:14:39,691 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;@5d3056c3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 03:14:39,691 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-08 03:14:39,694 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 15 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-08 03:14:39,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-03-08 03:14:39,699 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 03:14:39,699 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 03:14:39,700 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 03:14:39,703 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 03:14:39,704 INFO L85 PathProgramCache]: Analyzing trace with hash 1779304331, now seen corresponding path program 1 times [2025-03-08 03:14:39,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 03:14:39,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3484452] [2025-03-08 03:14:39,711 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 03:14:39,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 03:14:39,759 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-08 03:14:39,767 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-08 03:14:39,767 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 03:14:39,767 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 03:14:39,796 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-08 03:14:39,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 03:14:39,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3484452] [2025-03-08 03:14:39,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3484452] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 03:14:39,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [510188980] [2025-03-08 03:14:39,798 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 03:14:39,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 03:14:39,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 03:14:39,800 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) [2025-03-08 03:14:39,802 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-08 03:14:39,833 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-08 03:14:39,845 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-08 03:14:39,846 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 03:14:39,846 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 03:14:39,848 INFO L256 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-08 03:14:39,851 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 03:14:39,856 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-08 03:14:39,857 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 03:14:39,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [510188980] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 03:14:39,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 03:14:39,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-03-08 03:14:39,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066028920] [2025-03-08 03:14:39,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 03:14:39,861 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-08 03:14:39,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 03:14:39,875 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-08 03:14:39,875 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-08 03:14:39,876 INFO L87 Difference]: Start difference. First operand has 19 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 15 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-08 03:14:39,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 03:14:39,885 INFO L93 Difference]: Finished difference Result 35 states and 44 transitions. [2025-03-08 03:14:39,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-08 03:14:39,887 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, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 17 [2025-03-08 03:14:39,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 03:14:39,890 INFO L225 Difference]: With dead ends: 35 [2025-03-08 03:14:39,890 INFO L226 Difference]: Without dead ends: 15 [2025-03-08 03:14:39,892 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-08 03:14:39,894 INFO L435 NwaCegarLoop]: 20 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, 20 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 [2025-03-08 03:14:39,894 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 03:14:39,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2025-03-08 03:14:39,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2025-03-08 03:14:39,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-08 03:14:39,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2025-03-08 03:14:39,914 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 17 [2025-03-08 03:14:39,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 03:14:39,914 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2025-03-08 03:14:39,915 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, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-08 03:14:39,915 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2025-03-08 03:14:39,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-03-08 03:14:39,915 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 03:14:39,915 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 03:14:39,922 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-08 03:14:40,116 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 [2025-03-08 03:14:40,116 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 03:14:40,117 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 03:14:40,117 INFO L85 PathProgramCache]: Analyzing trace with hash 1304921848, now seen corresponding path program 1 times [2025-03-08 03:14:40,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 03:14:40,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193029245] [2025-03-08 03:14:40,117 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 03:14:40,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 03:14:40,125 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-08 03:14:40,140 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-08 03:14:40,140 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 03:14:40,140 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-08 03:14:40,140 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-08 03:14:40,143 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-08 03:14:40,155 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-08 03:14:40,156 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 03:14:40,156 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-08 03:14:40,169 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-08 03:14:40,170 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-08 03:14:40,171 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2025-03-08 03:14:40,172 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-08 03:14:40,175 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-03-08 03:14:40,188 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-08 03:14:40,191 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.03 03:14:40 BoogieIcfgContainer [2025-03-08 03:14:40,191 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-08 03:14:40,192 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-08 03:14:40,192 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-08 03:14:40,192 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-08 03:14:40,193 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 03:14:39" (3/4) ... [2025-03-08 03:14:40,194 INFO L149 WitnessPrinter]: No result that supports witness generation found [2025-03-08 03:14:40,195 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-08 03:14:40,197 INFO L158 Benchmark]: Toolchain (without parser) took 982.14ms. Allocated memory is still 201.3MB. Free memory was 154.6MB in the beginning and 104.8MB in the end (delta: 49.9MB). Peak memory consumption was 50.3MB. Max. memory is 16.1GB. [2025-03-08 03:14:40,197 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 201.3MB. Free memory is still 118.4MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-08 03:14:40,198 INFO L158 Benchmark]: CACSL2BoogieTranslator took 150.02ms. Allocated memory is still 201.3MB. Free memory was 154.2MB in the beginning and 143.3MB in the end (delta: 10.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-08 03:14:40,198 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.36ms. Allocated memory is still 201.3MB. Free memory was 143.3MB in the beginning and 142.4MB in the end (delta: 873.0kB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-08 03:14:40,199 INFO L158 Benchmark]: Boogie Preprocessor took 25.02ms. Allocated memory is still 201.3MB. Free memory was 142.4MB in the beginning and 141.2MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-08 03:14:40,199 INFO L158 Benchmark]: IcfgBuilder took 199.34ms. Allocated memory is still 201.3MB. Free memory was 141.2MB in the beginning and 130.4MB in the end (delta: 10.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-08 03:14:40,199 INFO L158 Benchmark]: TraceAbstraction took 574.24ms. Allocated memory is still 201.3MB. Free memory was 130.0MB in the beginning and 104.8MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-03-08 03:14:40,200 INFO L158 Benchmark]: Witness Printer took 3.01ms. Allocated memory is still 201.3MB. Free memory is still 104.8MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-08 03:14:40,204 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 201.3MB. Free memory is still 118.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 150.02ms. Allocated memory is still 201.3MB. Free memory was 154.2MB in the beginning and 143.3MB in the end (delta: 10.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 22.36ms. Allocated memory is still 201.3MB. Free memory was 143.3MB in the beginning and 142.4MB in the end (delta: 873.0kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 25.02ms. Allocated memory is still 201.3MB. Free memory was 142.4MB in the beginning and 141.2MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 199.34ms. Allocated memory is still 201.3MB. Free memory was 141.2MB in the beginning and 130.4MB in the end (delta: 10.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 574.24ms. Allocated memory is still 201.3MB. Free memory was 130.0MB in the beginning and 104.8MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Witness Printer took 3.01ms. Allocated memory is still 201.3MB. Free memory is still 104.8MB. 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 - UnprovableResult [Line: 13]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 39, overapproximation of someBinaryDOUBLEComparisonOperation at line 21, overapproximation of someBinaryDOUBLEComparisonOperation at line 22, overapproximation of someBinaryArithmeticFLOAToperation at line 26, overapproximation of someBinaryArithmeticFLOAToperation at line 31. Possible FailurePath: [L20] float x = __VERIFIER_nondet_float() ; [L21] CALL assume_abort_if_not(x > -1.0) VAL [\old(cond)=1] [L11] COND FALSE !(!cond) VAL [\old(cond)=1] [L21] RET assume_abort_if_not(x > -1.0) [L22] CALL assume_abort_if_not(x < 1.0) VAL [\old(cond)=1] [L11] COND FALSE !(!cond) VAL [\old(cond)=1] [L22] RET assume_abort_if_not(x < 1.0) [L23] float exp = 1.0 ; [L24] float term = 1.0 ; [L25] unsigned int count = 1 ; [L26] float result = 2*(1/(1-x)) ; [L27] int temp ; VAL [count=1] [L29] COND TRUE 1 [L31] term = term * (x/count) [L32] exp = exp + term [L33] count++ [L35] temp = __VERIFIER_nondet_int() [L36] COND TRUE temp ==0 VAL [count=2] [L39] CALL __VERIFIER_assert( result >= exp ) [L13] COND TRUE !(cond) [L13] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 19 locations, 25 edges, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 20 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 20 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=0, InterpolantAutomatonStates: 2, 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 52 NumberOfCodeBlocks, 52 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 32 SizeOfPredicates, 0 NumberOfNonLiveVariables, 54 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 2 InterpolantComputations, 1 PerfectInterpolantSequences, 6/8 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 RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2025-03-08 03:14:40,219 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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/loop-floats-scientific-comp/loop1-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.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 259166f87cdd7847094aaf95c1b6c2506a27351f8fceb58c6f5bc2db5fb43f03 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 03:14:42,123 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 03:14:42,203 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2025-03-08 03:14:42,208 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 03:14:42,208 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 03:14:42,231 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 03:14:42,232 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 03:14:42,232 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 03:14:42,232 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 03:14:42,232 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 03:14:42,232 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 03:14:42,233 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 03:14:42,233 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 03:14:42,233 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 03:14:42,233 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 03:14:42,233 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 03:14:42,233 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 03:14:42,233 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-08 03:14:42,234 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-08 03:14:42,234 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 03:14:42,234 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 03:14:42,234 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 03:14:42,234 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 03:14:42,234 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-08 03:14:42,234 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-03-08 03:14:42,234 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-03-08 03:14:42,234 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-08 03:14:42,234 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 03:14:42,235 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 03:14:42,235 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 03:14:42,235 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 03:14:42,235 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 03:14:42,235 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 03:14:42,235 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 03:14:42,235 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 03:14:42,235 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 03:14:42,236 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 03:14:42,236 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 03:14:42,236 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 03:14:42,236 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-03-08 03:14:42,236 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-03-08 03:14:42,236 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 03:14:42,236 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 03:14:42,236 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 03:14:42,236 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 03:14:42,236 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 -> 259166f87cdd7847094aaf95c1b6c2506a27351f8fceb58c6f5bc2db5fb43f03 [2025-03-08 03:14:42,513 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 03:14:42,519 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 03:14:42,521 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 03:14:42,523 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 03:14:42,523 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 03:14:42,525 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-floats-scientific-comp/loop1-1.c [2025-03-08 03:14:43,747 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f10084181/0daf0f34d25841dc98bd663867f004f4/FLAGf95c3adc5 [2025-03-08 03:14:43,923 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 03:14:43,923 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-floats-scientific-comp/loop1-1.c [2025-03-08 03:14:43,930 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f10084181/0daf0f34d25841dc98bd663867f004f4/FLAGf95c3adc5 [2025-03-08 03:14:43,946 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f10084181/0daf0f34d25841dc98bd663867f004f4 [2025-03-08 03:14:43,948 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 03:14:43,949 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 03:14:43,950 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 03:14:43,950 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 03:14:43,953 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 03:14:43,954 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 03:14:43" (1/1) ... [2025-03-08 03:14:43,954 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@212d6aaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:14:43, skipping insertion in model container [2025-03-08 03:14:43,955 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 03:14:43" (1/1) ... [2025-03-08 03:14:43,965 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 03:14:44,072 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/loop-floats-scientific-comp/loop1-1.c[497,510] [2025-03-08 03:14:44,089 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 03:14:44,099 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 03:14:44,108 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/loop-floats-scientific-comp/loop1-1.c[497,510] [2025-03-08 03:14:44,111 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 03:14:44,123 INFO L204 MainTranslator]: Completed translation [2025-03-08 03:14:44,125 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:14:44 WrapperNode [2025-03-08 03:14:44,125 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 03:14:44,126 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 03:14:44,126 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 03:14:44,126 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 03:14:44,131 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:14:44" (1/1) ... [2025-03-08 03:14:44,138 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:14:44" (1/1) ... [2025-03-08 03:14:44,150 INFO L138 Inliner]: procedures = 16, calls = 10, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 39 [2025-03-08 03:14:44,151 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 03:14:44,152 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 03:14:44,152 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 03:14:44,152 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 03:14:44,157 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:14:44" (1/1) ... [2025-03-08 03:14:44,158 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:14:44" (1/1) ... [2025-03-08 03:14:44,159 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:14:44" (1/1) ... [2025-03-08 03:14:44,170 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]. [2025-03-08 03:14:44,171 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:14:44" (1/1) ... [2025-03-08 03:14:44,172 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:14:44" (1/1) ... [2025-03-08 03:14:44,176 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:14:44" (1/1) ... [2025-03-08 03:14:44,180 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:14:44" (1/1) ... [2025-03-08 03:14:44,181 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:14:44" (1/1) ... [2025-03-08 03:14:44,184 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:14:44" (1/1) ... [2025-03-08 03:14:44,185 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 03:14:44,188 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 03:14:44,188 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 03:14:44,188 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 03:14:44,189 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:14:44" (1/1) ... [2025-03-08 03:14:44,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 03:14:44,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 03:14:44,214 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) [2025-03-08 03:14:44,217 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 [2025-03-08 03:14:44,236 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 03:14:44,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-03-08 03:14:44,236 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-08 03:14:44,236 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-08 03:14:44,236 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 03:14:44,236 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 03:14:44,285 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 03:14:44,287 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 03:14:50,184 INFO L? ?]: Removed 10 outVars from TransFormulas that were not future-live. [2025-03-08 03:14:50,185 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 03:14:50,191 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 03:14:50,191 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 03:14:50,192 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 03:14:50 BoogieIcfgContainer [2025-03-08 03:14:50,192 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 03:14:50,193 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 03:14:50,194 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 03:14:50,197 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 03:14:50,197 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 03:14:43" (1/3) ... [2025-03-08 03:14:50,198 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45c73df2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 03:14:50, skipping insertion in model container [2025-03-08 03:14:50,198 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:14:44" (2/3) ... [2025-03-08 03:14:50,198 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45c73df2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 03:14:50, skipping insertion in model container [2025-03-08 03:14:50,199 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 03:14:50" (3/3) ... [2025-03-08 03:14:50,200 INFO L128 eAbstractionObserver]: Analyzing ICFG loop1-1.c [2025-03-08 03:14:50,210 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 03:14:50,212 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG loop1-1.c that has 2 procedures, 19 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-08 03:14:50,254 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 03:14:50,261 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;@7e03cbfc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 03:14:50,262 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-08 03:14:50,266 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 15 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-08 03:14:50,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-03-08 03:14:50,270 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 03:14:50,271 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 03:14:50,271 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 03:14:50,274 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 03:14:50,274 INFO L85 PathProgramCache]: Analyzing trace with hash 1779304331, now seen corresponding path program 1 times [2025-03-08 03:14:50,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-08 03:14:50,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [652352462] [2025-03-08 03:14:50,283 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 03:14:50,284 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2025-03-08 03:14:50,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2025-03-08 03:14:50,286 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2025-03-08 03:14:50,287 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2025-03-08 03:14:50,317 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-08 03:14:50,479 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-08 03:14:50,479 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 03:14:50,479 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 03:14:50,485 INFO L256 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-08 03:14:50,488 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 03:14:50,501 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-08 03:14:50,501 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 03:14:50,502 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-08 03:14:50,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [652352462] [2025-03-08 03:14:50,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [652352462] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 03:14:50,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 03:14:50,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-08 03:14:50,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633231391] [2025-03-08 03:14:50,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 03:14:50,506 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-08 03:14:50,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-08 03:14:50,517 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-08 03:14:50,517 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-08 03:14:50,519 INFO L87 Difference]: Start difference. First operand has 19 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 15 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-08 03:14:50,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 03:14:50,528 INFO L93 Difference]: Finished difference Result 35 states and 44 transitions. [2025-03-08 03:14:50,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-08 03:14:50,529 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2025-03-08 03:14:50,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 03:14:50,532 INFO L225 Difference]: With dead ends: 35 [2025-03-08 03:14:50,532 INFO L226 Difference]: Without dead ends: 15 [2025-03-08 03:14:50,535 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-08 03:14:50,537 INFO L435 NwaCegarLoop]: 20 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, 20 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 [2025-03-08 03:14:50,537 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 03:14:50,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2025-03-08 03:14:50,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2025-03-08 03:14:50,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-08 03:14:50,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2025-03-08 03:14:50,559 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 17 [2025-03-08 03:14:50,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 03:14:50,559 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2025-03-08 03:14:50,559 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-08 03:14:50,559 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2025-03-08 03:14:50,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-03-08 03:14:50,560 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 03:14:50,560 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 03:14:50,569 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2025-03-08 03:14:50,761 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2025-03-08 03:14:50,761 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 03:14:50,762 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 03:14:50,762 INFO L85 PathProgramCache]: Analyzing trace with hash 1304921848, now seen corresponding path program 1 times [2025-03-08 03:14:50,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-08 03:14:50,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [463664915] [2025-03-08 03:14:50,762 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 03:14:50,762 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2025-03-08 03:14:50,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2025-03-08 03:14:50,764 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2025-03-08 03:14:50,765 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2025-03-08 03:14:50,784 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-08 03:14:51,809 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-08 03:14:51,809 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 03:14:51,809 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 03:14:51,824 INFO L256 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-03-08 03:14:51,826 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 03:15:07,457 WARN L286 SmtUtils]: Spent 5.30s on a formula simplification that was a NOOP. DAG size: 7 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2025-03-08 03:15:56,563 WARN L286 SmtUtils]: Spent 32.82s on a formula simplification that was a NOOP. DAG size: 27 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2025-03-08 03:16:04,687 WARN L286 SmtUtils]: Spent 8.11s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2025-03-08 03:16:12,818 WARN L286 SmtUtils]: Spent 8.13s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2025-03-08 03:16:18,523 WARN L286 SmtUtils]: Spent 5.70s on a formula simplification that was a NOOP. DAG size: 7 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2025-03-08 03:16:26,675 WARN L286 SmtUtils]: Spent 8.15s on a formula simplification that was a NOOP. DAG size: 6 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)