./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/floats-esbmc-regression/Float_div.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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_1.5.800.v20200727-1323.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/floats-esbmc-regression/Float_div.i -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 fe4b2ac8b2a0e269dd16c91161494638306526c517de7ea644739142e1210da9 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 04:59:48,014 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 04:59:48,062 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 04:59:48,068 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 04:59:48,098 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 04:59:48,128 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 04:59:48,128 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 04:59:48,129 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 04:59:48,129 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 04:59:48,132 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 04:59:48,132 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 04:59:48,133 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 04:59:48,133 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 04:59:48,134 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 04:59:48,135 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 04:59:48,135 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 04:59:48,135 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 04:59:48,135 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 04:59:48,136 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 04:59:48,136 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 04:59:48,136 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 04:59:48,137 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 04:59:48,137 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 04:59:48,141 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 04:59:48,141 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 04:59:48,141 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 04:59:48,141 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 04:59:48,141 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 04:59:48,141 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 04:59:48,142 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 04:59:48,142 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 04:59:48,142 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 04:59:48,142 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 04:59:48,142 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 04:59:48,142 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 04:59:48,142 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 04:59:48,143 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 04:59:48,143 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 04:59:48,143 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 04:59:48,143 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 04:59:48,143 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 04:59:48,144 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 04:59:48,144 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fe4b2ac8b2a0e269dd16c91161494638306526c517de7ea644739142e1210da9 [2024-11-16 04:59:48,328 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 04:59:48,351 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 04:59:48,354 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 04:59:48,355 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 04:59:48,355 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 04:59:48,356 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-esbmc-regression/Float_div.i [2024-11-16 04:59:49,633 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 04:59:49,787 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 04:59:49,788 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-esbmc-regression/Float_div.i [2024-11-16 04:59:49,794 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae4663867/c8b02dd2e6634fe4a570d4278e31cdfc/FLAG7e2bece24 [2024-11-16 04:59:49,807 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae4663867/c8b02dd2e6634fe4a570d4278e31cdfc [2024-11-16 04:59:49,810 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 04:59:49,811 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 04:59:49,812 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 04:59:49,812 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 04:59:49,817 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 04:59:49,818 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 04:59:49" (1/1) ... [2024-11-16 04:59:49,819 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48b2f267 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:59:49, skipping insertion in model container [2024-11-16 04:59:49,819 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 04:59:49" (1/1) ... [2024-11-16 04:59:49,842 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 04:59:49,965 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/floats-esbmc-regression/Float_div.i[803,816] [2024-11-16 04:59:49,975 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 04:59:49,982 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 04:59:49,993 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/floats-esbmc-regression/Float_div.i[803,816] [2024-11-16 04:59:49,995 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 04:59:50,012 INFO L204 MainTranslator]: Completed translation [2024-11-16 04:59:50,012 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:59:50 WrapperNode [2024-11-16 04:59:50,013 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 04:59:50,014 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 04:59:50,015 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 04:59:50,015 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 04:59:50,021 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:59:50" (1/1) ... [2024-11-16 04:59:50,026 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:59:50" (1/1) ... [2024-11-16 04:59:50,040 INFO L138 Inliner]: procedures = 14, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 24 [2024-11-16 04:59:50,040 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 04:59:50,041 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 04:59:50,041 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 04:59:50,041 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 04:59:50,049 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:59:50" (1/1) ... [2024-11-16 04:59:50,049 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:59:50" (1/1) ... [2024-11-16 04:59:50,050 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:59:50" (1/1) ... [2024-11-16 04:59:50,059 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-16 04:59:50,060 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:59:50" (1/1) ... [2024-11-16 04:59:50,060 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:59:50" (1/1) ... [2024-11-16 04:59:50,063 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:59:50" (1/1) ... [2024-11-16 04:59:50,063 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:59:50" (1/1) ... [2024-11-16 04:59:50,064 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:59:50" (1/1) ... [2024-11-16 04:59:50,065 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:59:50" (1/1) ... [2024-11-16 04:59:50,066 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 04:59:50,066 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 04:59:50,067 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 04:59:50,067 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 04:59:50,067 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:59:50" (1/1) ... [2024-11-16 04:59:50,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 04:59:50,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 04:59:50,096 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) [2024-11-16 04:59:50,103 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 [2024-11-16 04:59:50,135 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 04:59:50,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 04:59:50,135 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 04:59:50,136 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 04:59:50,184 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 04:59:50,186 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 04:59:50,268 INFO L? ?]: Removed 7 outVars from TransFormulas that were not future-live. [2024-11-16 04:59:50,268 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 04:59:50,277 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 04:59:50,277 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 04:59:50,278 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 04:59:50 BoogieIcfgContainer [2024-11-16 04:59:50,278 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 04:59:50,280 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 04:59:50,280 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 04:59:50,283 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 04:59:50,283 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 04:59:49" (1/3) ... [2024-11-16 04:59:50,284 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@418569d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 04:59:50, skipping insertion in model container [2024-11-16 04:59:50,284 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:59:50" (2/3) ... [2024-11-16 04:59:50,284 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@418569d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 04:59:50, skipping insertion in model container [2024-11-16 04:59:50,284 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 04:59:50" (3/3) ... [2024-11-16 04:59:50,285 INFO L112 eAbstractionObserver]: Analyzing ICFG Float_div.i [2024-11-16 04:59:50,334 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 04:59:50,334 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 04:59:50,415 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 04:59:50,421 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;@601d0ab9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 04:59:50,421 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-16 04:59:50,425 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:59:50,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-16 04:59:50,429 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:59:50,430 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:59:50,430 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:59:50,434 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:59:50,435 INFO L85 PathProgramCache]: Analyzing trace with hash 1039785133, now seen corresponding path program 1 times [2024-11-16 04:59:50,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:59:50,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402669731] [2024-11-16 04:59:50,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:59:50,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:59:50,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:59:50,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 04:59:50,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:59:50,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402669731] [2024-11-16 04:59:50,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402669731] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:59:50,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:59:50,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 04:59:50,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179804394] [2024-11-16 04:59:50,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:59:50,568 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-16 04:59:50,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:59:50,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-16 04:59:50,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 04:59:50,592 INFO L87 Difference]: Start difference. First operand has 14 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 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) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:59:50,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:59:50,602 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2024-11-16 04:59:50,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-16 04:59:50,604 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-16 04:59:50,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:59:50,609 INFO L225 Difference]: With dead ends: 23 [2024-11-16 04:59:50,609 INFO L226 Difference]: Without dead ends: 9 [2024-11-16 04:59:50,612 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 04:59:50,616 INFO L432 NwaCegarLoop]: 13 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, 13 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 [2024-11-16 04:59:50,617 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 04:59:50,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2024-11-16 04:59:50,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2024-11-16 04:59:50,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:59:50,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2024-11-16 04:59:50,640 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2024-11-16 04:59:50,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:59:50,641 INFO L471 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2024-11-16 04:59:50,642 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:59:50,642 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2024-11-16 04:59:50,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-16 04:59:50,642 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:59:50,642 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:59:50,643 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 04:59:50,643 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:59:50,644 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:59:50,644 INFO L85 PathProgramCache]: Analyzing trace with hash 2141846522, now seen corresponding path program 1 times [2024-11-16 04:59:50,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:59:50,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303920299] [2024-11-16 04:59:50,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:59:50,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:59:50,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-16 04:59:50,663 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-16 04:59:50,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-16 04:59:50,688 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-16 04:59:50,688 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-16 04:59:50,690 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-16 04:59:50,692 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 04:59:50,696 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-16 04:59:50,706 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-16 04:59:50,712 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 04:59:50 BoogieIcfgContainer [2024-11-16 04:59:50,712 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-16 04:59:50,713 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-16 04:59:50,713 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-16 04:59:50,713 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-16 04:59:50,714 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 04:59:50" (3/4) ... [2024-11-16 04:59:50,717 INFO L146 WitnessPrinter]: No result that supports witness generation found [2024-11-16 04:59:50,718 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-16 04:59:50,720 INFO L158 Benchmark]: Toolchain (without parser) took 908.22ms. Allocated memory is still 205.5MB. Free memory was 136.9MB in the beginning and 155.4MB in the end (delta: -18.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-16 04:59:50,720 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 109.1MB. Free memory was 75.5MB in the beginning and 75.3MB in the end (delta: 118.9kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-16 04:59:50,721 INFO L158 Benchmark]: CACSL2BoogieTranslator took 201.89ms. Allocated memory is still 205.5MB. Free memory was 136.8MB in the beginning and 124.6MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-16 04:59:50,723 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.33ms. Allocated memory is still 205.5MB. Free memory was 124.6MB in the beginning and 123.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-16 04:59:50,723 INFO L158 Benchmark]: Boogie Preprocessor took 24.82ms. Allocated memory is still 205.5MB. Free memory was 123.1MB in the beginning and 121.6MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-16 04:59:50,723 INFO L158 Benchmark]: IcfgBuilder took 211.63ms. Allocated memory is still 205.5MB. Free memory was 121.6MB in the beginning and 111.7MB in the end (delta: 10.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-16 04:59:50,724 INFO L158 Benchmark]: TraceAbstraction took 432.46ms. Allocated memory is still 205.5MB. Free memory was 111.1MB in the beginning and 156.3MB in the end (delta: -45.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-16 04:59:50,724 INFO L158 Benchmark]: Witness Printer took 5.55ms. Allocated memory is still 205.5MB. Free memory was 156.3MB in the beginning and 155.4MB in the end (delta: 833.1kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-16 04:59:50,727 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 109.1MB. Free memory was 75.5MB in the beginning and 75.3MB in the end (delta: 118.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 201.89ms. Allocated memory is still 205.5MB. Free memory was 136.8MB in the beginning and 124.6MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 26.33ms. Allocated memory is still 205.5MB. Free memory was 124.6MB in the beginning and 123.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 24.82ms. Allocated memory is still 205.5MB. Free memory was 123.1MB in the beginning and 121.6MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * IcfgBuilder took 211.63ms. Allocated memory is still 205.5MB. Free memory was 121.6MB in the beginning and 111.7MB in the end (delta: 10.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 432.46ms. Allocated memory is still 205.5MB. Free memory was 111.1MB in the beginning and 156.3MB in the end (delta: -45.1MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 5.55ms. Allocated memory is still 205.5MB. Free memory was 156.3MB in the beginning and 155.4MB in the end (delta: 833.1kB). 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 29, overapproximation of someBinaryArithmeticFLOAToperation at line 21. Possible FailurePath: [L20] float x = 1.0f; [L21] float x1 = x/2.5f; [L23] COND FALSE !(x1 != x) [L29] CALL __VERIFIER_assert(x == 0) [L13] COND TRUE !(cond) [L13] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, 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, 13 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, 13 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred 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, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 6 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 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 RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-11-16 04:59:50,756 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 Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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_1.5.800.v20200727-1323.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/floats-esbmc-regression/Float_div.i -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 fe4b2ac8b2a0e269dd16c91161494638306526c517de7ea644739142e1210da9 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 04:59:53,040 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 04:59:53,101 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-11-16 04:59:53,106 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 04:59:53,106 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 04:59:53,131 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 04:59:53,132 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 04:59:53,132 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 04:59:53,132 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 04:59:53,133 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 04:59:53,133 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 04:59:53,133 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 04:59:53,134 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 04:59:53,134 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 04:59:53,134 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 04:59:53,135 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 04:59:53,137 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 04:59:53,137 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 04:59:53,137 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 04:59:53,138 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 04:59:53,138 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 04:59:53,138 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 04:59:53,138 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 04:59:53,139 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-16 04:59:53,139 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-16 04:59:53,139 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 04:59:53,139 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-16 04:59:53,139 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 04:59:53,140 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 04:59:53,140 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 04:59:53,140 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 04:59:53,140 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 04:59:53,140 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 04:59:53,141 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 04:59:53,141 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 04:59:53,141 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 04:59:53,141 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 04:59:53,141 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 04:59:53,142 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-16 04:59:53,142 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-16 04:59:53,142 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 04:59:53,146 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 04:59:53,146 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 04:59:53,147 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 04:59:53,147 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fe4b2ac8b2a0e269dd16c91161494638306526c517de7ea644739142e1210da9 [2024-11-16 04:59:53,424 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 04:59:53,448 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 04:59:53,454 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 04:59:53,455 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 04:59:53,455 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 04:59:53,456 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-esbmc-regression/Float_div.i [2024-11-16 04:59:54,865 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 04:59:55,015 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 04:59:55,015 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-esbmc-regression/Float_div.i [2024-11-16 04:59:55,021 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9841f618a/2a5cc8fd4d44446d87f5fb82f331c806/FLAGeed156075 [2024-11-16 04:59:55,442 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9841f618a/2a5cc8fd4d44446d87f5fb82f331c806 [2024-11-16 04:59:55,444 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 04:59:55,445 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 04:59:55,465 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 04:59:55,466 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 04:59:55,476 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 04:59:55,482 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 04:59:55" (1/1) ... [2024-11-16 04:59:55,482 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34f47543 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:59:55, skipping insertion in model container [2024-11-16 04:59:55,483 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 04:59:55" (1/1) ... [2024-11-16 04:59:55,508 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 04:59:55,759 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/floats-esbmc-regression/Float_div.i[803,816] [2024-11-16 04:59:55,780 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 04:59:55,796 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 04:59:55,815 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/floats-esbmc-regression/Float_div.i[803,816] [2024-11-16 04:59:55,817 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 04:59:55,831 INFO L204 MainTranslator]: Completed translation [2024-11-16 04:59:55,831 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:59:55 WrapperNode [2024-11-16 04:59:55,832 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 04:59:55,832 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 04:59:55,832 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 04:59:55,833 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 04:59:55,837 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:59:55" (1/1) ... [2024-11-16 04:59:55,843 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:59:55" (1/1) ... [2024-11-16 04:59:55,853 INFO L138 Inliner]: procedures = 15, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 25 [2024-11-16 04:59:55,853 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 04:59:55,854 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 04:59:55,854 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 04:59:55,855 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 04:59:55,860 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:59:55" (1/1) ... [2024-11-16 04:59:55,861 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:59:55" (1/1) ... [2024-11-16 04:59:55,863 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:59:55" (1/1) ... [2024-11-16 04:59:55,874 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-16 04:59:55,874 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:59:55" (1/1) ... [2024-11-16 04:59:55,874 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:59:55" (1/1) ... [2024-11-16 04:59:55,878 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:59:55" (1/1) ... [2024-11-16 04:59:55,879 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:59:55" (1/1) ... [2024-11-16 04:59:55,880 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:59:55" (1/1) ... [2024-11-16 04:59:55,881 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:59:55" (1/1) ... [2024-11-16 04:59:55,883 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 04:59:55,884 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 04:59:55,884 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 04:59:55,885 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 04:59:55,886 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:59:55" (1/1) ... [2024-11-16 04:59:55,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 04:59:55,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 04:59:55,908 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) [2024-11-16 04:59:55,912 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 [2024-11-16 04:59:55,940 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 04:59:55,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-16 04:59:55,940 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 04:59:55,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 04:59:55,995 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 04:59:55,998 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 04:59:56,252 INFO L? ?]: Removed 7 outVars from TransFormulas that were not future-live. [2024-11-16 04:59:56,252 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 04:59:56,263 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 04:59:56,264 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 04:59:56,264 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 04:59:56 BoogieIcfgContainer [2024-11-16 04:59:56,264 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 04:59:56,267 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 04:59:56,267 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 04:59:56,269 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 04:59:56,269 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 04:59:55" (1/3) ... [2024-11-16 04:59:56,270 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11a0f332 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 04:59:56, skipping insertion in model container [2024-11-16 04:59:56,270 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:59:55" (2/3) ... [2024-11-16 04:59:56,271 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11a0f332 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 04:59:56, skipping insertion in model container [2024-11-16 04:59:56,272 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 04:59:56" (3/3) ... [2024-11-16 04:59:56,273 INFO L112 eAbstractionObserver]: Analyzing ICFG Float_div.i [2024-11-16 04:59:56,284 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 04:59:56,285 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 04:59:56,330 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 04:59:56,335 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;@65df4fa1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 04:59:56,336 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-16 04:59:56,339 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:59:56,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-16 04:59:56,344 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:59:56,344 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:59:56,345 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:59:56,348 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:59:56,349 INFO L85 PathProgramCache]: Analyzing trace with hash 1039785133, now seen corresponding path program 1 times [2024-11-16 04:59:56,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-16 04:59:56,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [929857602] [2024-11-16 04:59:56,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:59:56,358 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 [2024-11-16 04:59:56,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-16 04:59:56,361 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) [2024-11-16 04:59:56,362 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 [2024-11-16 04:59:56,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:59:56,442 INFO L255 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-16 04:59:56,445 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 04:59:56,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 04:59:56,457 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 04:59:56,458 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-16 04:59:56,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [929857602] [2024-11-16 04:59:56,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [929857602] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:59:56,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:59:56,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 04:59:56,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708937243] [2024-11-16 04:59:56,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:59:56,463 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-16 04:59:56,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-16 04:59:56,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-16 04:59:56,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 04:59:56,480 INFO L87 Difference]: Start difference. First operand has 14 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 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) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:59:56,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:59:56,488 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2024-11-16 04:59:56,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-16 04:59:56,489 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-16 04:59:56,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:59:56,494 INFO L225 Difference]: With dead ends: 23 [2024-11-16 04:59:56,494 INFO L226 Difference]: Without dead ends: 9 [2024-11-16 04:59:56,496 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 04:59:56,498 INFO L432 NwaCegarLoop]: 13 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, 13 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 [2024-11-16 04:59:56,499 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 04:59:56,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2024-11-16 04:59:56,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2024-11-16 04:59:56,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:59:56,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2024-11-16 04:59:56,519 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2024-11-16 04:59:56,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:59:56,520 INFO L471 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2024-11-16 04:59:56,520 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:59:56,520 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2024-11-16 04:59:56,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-16 04:59:56,521 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:59:56,521 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:59:56,526 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 [2024-11-16 04:59:56,724 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 [2024-11-16 04:59:56,725 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:59:56,726 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:59:56,726 INFO L85 PathProgramCache]: Analyzing trace with hash 2141846522, now seen corresponding path program 1 times [2024-11-16 04:59:56,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-16 04:59:56,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [767278615] [2024-11-16 04:59:56,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:59:56,727 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 [2024-11-16 04:59:56,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-16 04:59:56,728 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) [2024-11-16 04:59:56,730 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 [2024-11-16 04:59:56,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:59:56,823 INFO L255 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-16 04:59:56,824 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 04:59:57,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 04:59:57,395 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 04:59:57,395 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-16 04:59:57,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [767278615] [2024-11-16 04:59:57,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [767278615] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:59:57,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:59:57,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:59:57,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473410962] [2024-11-16 04:59:57,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:59:57,397 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 04:59:57,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-16 04:59:57,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 04:59:57,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 04:59:57,398 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:59:58,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:59:58,171 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2024-11-16 04:59:58,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 04:59:58,186 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-16 04:59:58,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:59:58,186 INFO L225 Difference]: With dead ends: 16 [2024-11-16 04:59:58,186 INFO L226 Difference]: Without dead ends: 11 [2024-11-16 04:59:58,187 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-16 04:59:58,188 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 10 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-16 04:59:58,188 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 11 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-16 04:59:58,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2024-11-16 04:59:58,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2024-11-16 04:59:58,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:59:58,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2024-11-16 04:59:58,191 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 8 [2024-11-16 04:59:58,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:59:58,191 INFO L471 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2024-11-16 04:59:58,191 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:59:58,191 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2024-11-16 04:59:58,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-16 04:59:58,192 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:59:58,192 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:59:58,197 INFO L552 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)] Ended with exit code 0 [2024-11-16 04:59:58,395 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /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 [2024-11-16 04:59:58,396 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:59:58,396 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:59:58,396 INFO L85 PathProgramCache]: Analyzing trace with hash -1347855719, now seen corresponding path program 1 times [2024-11-16 04:59:58,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-16 04:59:58,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1697130004] [2024-11-16 04:59:58,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:59:58,397 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 [2024-11-16 04:59:58,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-16 04:59:58,404 INFO L229 MonitoredProcess]: Starting monitored process 4 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) [2024-11-16 04:59:58,406 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 (4)] Waiting until timeout for monitored process [2024-11-16 04:59:58,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:59:58,495 INFO L255 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-16 04:59:58,496 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 04:59:59,710 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 04:59:59,711 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 05:00:04,853 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 05:00:04,854 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-16 05:00:04,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1697130004] [2024-11-16 05:00:04,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1697130004] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 05:00:04,857 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-16 05:00:04,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2024-11-16 05:00:04,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179854696] [2024-11-16 05:00:04,858 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-16 05:00:04,858 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 05:00:04,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-16 05:00:04,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 05:00:04,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-16 05:00:04,860 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 05:00:11,299 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-16 05:00:15,509 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-16 05:00:19,707 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-16 05:00:19,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 05:00:19,775 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2024-11-16 05:00:19,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 05:00:19,776 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-11-16 05:00:19,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 05:00:19,777 INFO L225 Difference]: With dead ends: 22 [2024-11-16 05:00:19,777 INFO L226 Difference]: Without dead ends: 17 [2024-11-16 05:00:19,777 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-11-16 05:00:19,778 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 14 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.8s IncrementalHoareTripleChecker+Time [2024-11-16 05:00:19,783 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 25 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 3 Unknown, 0 Unchecked, 12.8s Time] [2024-11-16 05:00:19,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2024-11-16 05:00:19,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2024-11-16 05:00:19,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.0625) internal successors, (17), 16 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 05:00:19,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2024-11-16 05:00:19,786 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 10 [2024-11-16 05:00:19,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 05:00:19,786 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2024-11-16 05:00:19,787 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 05:00:19,787 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2024-11-16 05:00:19,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-16 05:00:19,787 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 05:00:19,788 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 05:00:19,794 INFO L552 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 (4)] Ended with exit code 0 [2024-11-16 05:00:19,989 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /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 [2024-11-16 05:00:19,989 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 05:00:19,990 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 05:00:19,990 INFO L85 PathProgramCache]: Analyzing trace with hash -2069090314, now seen corresponding path program 2 times [2024-11-16 05:00:19,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-16 05:00:19,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [152743037] [2024-11-16 05:00:19,991 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 05:00:19,991 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 [2024-11-16 05:00:19,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-16 05:00:19,995 INFO L229 MonitoredProcess]: Starting monitored process 5 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) [2024-11-16 05:00:19,998 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 (5)] Waiting until timeout for monitored process [2024-11-16 05:00:20,193 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 05:00:20,193 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 05:00:20,202 INFO L255 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-16 05:00:20,205 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 05:00:47,830 WARN L873 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (and (= |c_ULTIMATE.start_main_~x1~0#1| (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x~0#1| .cse0)) (= (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) .cse0) .cse0) .cse0) .cse0) |c_ULTIMATE.start_main_~x~0#1|) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2024-11-16 05:00:50,502 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 8 not checked. [2024-11-16 05:00:50,502 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 05:01:19,745 WARN L873 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x1~0#1| .cse1))) (or (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0))))) is different from true [2024-11-16 05:01:27,982 WARN L286 SmtUtils]: Spent 5.81s on a formula simplification that was a NOOP. DAG size: 8 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-16 05:01:36,140 WARN L286 SmtUtils]: Spent 8.16s on a formula simplification that was a NOOP. DAG size: 9 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)