/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml --sifa.abstract.domain EqDomain -i ../sv-benchmarks/c/float-benchs/filter1.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 10:47:21,171 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 10:47:21,172 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 10:47:21,197 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-01 10:47:21,197 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-01 10:47:21,198 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-01 10:47:21,199 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-01 10:47:21,200 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-01 10:47:21,201 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-01 10:47:21,201 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-01 10:47:21,202 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-01 10:47:21,202 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-01 10:47:21,203 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 10:47:21,203 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 10:47:21,204 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 10:47:21,220 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 10:47:21,221 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 10:47:21,222 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 10:47:21,223 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 10:47:21,224 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 10:47:21,225 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 10:47:21,237 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 10:47:21,238 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 10:47:21,239 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 10:47:21,241 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-04-01 10:47:21,245 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 10:47:21,245 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 10:47:21,246 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 10:47:21,257 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-04-01 10:47:21,272 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 10:47:21,272 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 10:47:21,273 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 10:47:21,273 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 10:47:21,273 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 10:47:21,273 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 10:47:21,273 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-01 10:47:21,273 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-01 10:47:21,274 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-01 10:47:21,274 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-01 10:47:21,274 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-01 10:47:21,274 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-01 10:47:21,274 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-01 10:47:21,274 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-01 10:47:21,274 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-01 10:47:21,274 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-01 10:47:21,274 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-01 10:47:21,274 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-01 10:47:21,275 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 10:47:21,275 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 10:47:21,275 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 10:47:21,275 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 10:47:21,275 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 10:47:21,275 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 10:47:21,276 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 10:47:21,276 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 10:47:21,276 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 10:47:21,276 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 10:47:21,276 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 10:47:21,276 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 10:47:21,276 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 10:47:21,276 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 10:47:21,276 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 10:47:21,277 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 10:47:21,277 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-01 10:47:21,277 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 10:47:21,277 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 10:47:21,277 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-01 10:47:21,277 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 10:47:21,277 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 10:47:21,277 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-01 10:47:21,277 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> EqDomain [2023-04-01 10:47:21,480 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 10:47:21,498 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 10:47:21,499 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 10:47:21,500 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 10:47:21,501 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 10:47:21,502 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/filter1.c.v+nlh-reducer.c [2023-04-01 10:47:22,633 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 10:47:22,800 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 10:47:22,801 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/filter1.c.v+nlh-reducer.c [2023-04-01 10:47:22,806 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/224b12666/649cff6d37f9401e810f764301bcfe19/FLAG88895616b [2023-04-01 10:47:22,823 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/224b12666/649cff6d37f9401e810f764301bcfe19 [2023-04-01 10:47:22,825 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 10:47:22,827 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 10:47:22,828 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 10:47:22,828 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 10:47:22,831 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 10:47:22,832 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 10:47:22" (1/1) ... [2023-04-01 10:47:22,833 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fc8f6db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:47:22, skipping insertion in model container [2023-04-01 10:47:22,833 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 10:47:22" (1/1) ... [2023-04-01 10:47:22,839 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 10:47:22,866 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 10:47:22,986 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/filter1.c.v+nlh-reducer.c[1372,1385] [2023-04-01 10:47:22,993 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/filter1.c.v+nlh-reducer.c[2411,2424] [2023-04-01 10:47:22,999 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 10:47:23,011 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 10:47:23,023 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/filter1.c.v+nlh-reducer.c[1372,1385] [2023-04-01 10:47:23,026 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/filter1.c.v+nlh-reducer.c[2411,2424] [2023-04-01 10:47:23,029 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 10:47:23,041 INFO L208 MainTranslator]: Completed translation [2023-04-01 10:47:23,041 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:47:23 WrapperNode [2023-04-01 10:47:23,041 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 10:47:23,042 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 10:47:23,042 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 10:47:23,042 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 10:47:23,052 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:47:23" (1/1) ... [2023-04-01 10:47:23,052 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:47:23" (1/1) ... [2023-04-01 10:47:23,059 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:47:23" (1/1) ... [2023-04-01 10:47:23,059 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:47:23" (1/1) ... [2023-04-01 10:47:23,065 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:47:23" (1/1) ... [2023-04-01 10:47:23,067 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:47:23" (1/1) ... [2023-04-01 10:47:23,068 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:47:23" (1/1) ... [2023-04-01 10:47:23,069 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:47:23" (1/1) ... [2023-04-01 10:47:23,070 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 10:47:23,071 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 10:47:23,071 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 10:47:23,071 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 10:47:23,073 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:47:23" (1/1) ... [2023-04-01 10:47:23,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 10:47:23,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 10:47:23,116 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-01 10:47:23,165 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-01 10:47:23,187 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 10:47:23,187 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 10:47:23,188 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 10:47:23,188 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-01 10:47:23,188 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 10:47:23,188 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 10:47:23,188 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 10:47:23,188 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 10:47:23,188 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 10:47:23,188 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 10:47:23,188 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2023-04-01 10:47:23,188 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-01 10:47:23,188 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-04-01 10:47:23,188 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 10:47:23,188 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 10:47:23,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 10:47:23,189 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 10:47:23,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 10:47:23,189 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 10:47:23,189 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 10:47:23,267 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 10:47:23,269 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 10:47:23,442 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 10:47:23,467 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 10:47:23,467 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-04-01 10:47:23,473 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 10:47:23 BoogieIcfgContainer [2023-04-01 10:47:23,473 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 10:47:23,475 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 10:47:23,475 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 10:47:23,477 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 10:47:23,478 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 10:47:22" (1/3) ... [2023-04-01 10:47:23,478 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f0392ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 10:47:23, skipping insertion in model container [2023-04-01 10:47:23,478 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:47:23" (2/3) ... [2023-04-01 10:47:23,478 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f0392ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 10:47:23, skipping insertion in model container [2023-04-01 10:47:23,478 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 10:47:23" (3/3) ... [2023-04-01 10:47:23,479 INFO L112 eAbstractionObserver]: Analyzing ICFG filter1.c.v+nlh-reducer.c [2023-04-01 10:47:23,492 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 10:47:23,492 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-04-01 10:47:23,541 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 10:47:23,547 INFO L357 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, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@51aca5fa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-01 10:47:23,547 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-04-01 10:47:23,550 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 27 states have (on average 1.5925925925925926) internal successors, (43), 29 states have internal predecessors, (43), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 10:47:23,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-04-01 10:47:23,555 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 10:47:23,555 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 10:47:23,556 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 10:47:23,562 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 10:47:23,562 INFO L85 PathProgramCache]: Analyzing trace with hash 308560086, now seen corresponding path program 1 times [2023-04-01 10:47:23,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 10:47:23,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839636785] [2023-04-01 10:47:23,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 10:47:23,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 10:47:23,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-04-01 10:47:23,665 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-04-01 10:47:23,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-04-01 10:47:23,692 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-04-01 10:47:23,693 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-04-01 10:47:23,694 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-04-01 10:47:23,695 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-04-01 10:47:23,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 10:47:23,698 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-04-01 10:47:23,700 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-04-01 10:47:23,714 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.04 10:47:23 BoogieIcfgContainer [2023-04-01 10:47:23,714 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-04-01 10:47:23,715 INFO L158 Benchmark]: Toolchain (without parser) took 888.22ms. Allocated memory is still 237.0MB. Free memory was 192.3MB in the beginning and 148.3MB in the end (delta: 44.0MB). Peak memory consumption was 44.0MB. Max. memory is 8.0GB. [2023-04-01 10:47:23,715 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 237.0MB. Free memory is still 187.1MB. There was no memory consumed. Max. memory is 8.0GB. [2023-04-01 10:47:23,715 INFO L158 Benchmark]: CACSL2BoogieTranslator took 213.60ms. Allocated memory is still 237.0MB. Free memory was 192.3MB in the beginning and 180.8MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-04-01 10:47:23,716 INFO L158 Benchmark]: Boogie Preprocessor took 28.32ms. Allocated memory is still 237.0MB. Free memory was 180.8MB in the beginning and 179.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-04-01 10:47:23,716 INFO L158 Benchmark]: RCFGBuilder took 402.18ms. Allocated memory is still 237.0MB. Free memory was 178.7MB in the beginning and 164.0MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2023-04-01 10:47:23,716 INFO L158 Benchmark]: TraceAbstraction took 239.18ms. Allocated memory is still 237.0MB. Free memory was 163.4MB in the beginning and 148.3MB in the end (delta: 15.1MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2023-04-01 10:47:23,718 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 237.0MB. Free memory is still 187.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 213.60ms. Allocated memory is still 237.0MB. Free memory was 192.3MB in the beginning and 180.8MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 28.32ms. Allocated memory is still 237.0MB. Free memory was 180.8MB in the beginning and 179.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 402.18ms. Allocated memory is still 237.0MB. Free memory was 178.7MB in the beginning and 164.0MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * TraceAbstraction took 239.18ms. Allocated memory is still 237.0MB. Free memory was 163.4MB in the beginning and 148.3MB in the end (delta: 15.1MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * 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: 59]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 46, overapproximation of to_real at line 42, overapproximation of someBinaryArithmeticDOUBLEoperation at line 177. Possible FailurePath: [L1] int __return_main; [L13] int __tmp_129_0; [L14] int __tmp_129_1; [L15] int __tmp_129_2; [L16] int __tmp_112_0; [L17] int __return_134; [L20] double main__E0; [L21] double main__E1; [L22] double main__S; [L23] int main__i; [L24] main__E1 = 0 [L25] main__S = 0 [L26] main__i = 0 VAL [\old(__return_134)=0, \old(__tmp_112_0)=0, \old(__tmp_129_0)=0, \old(__tmp_129_1)=0, \old(__tmp_129_2)=0, __return_134=0, __return_main=0, __tmp_112_0=0, __tmp_129_0=0, __tmp_129_1=0, __tmp_129_2=0, main__i=0] [L27] COND TRUE main__i <= 1000000 [L29] main__E0 = __VERIFIER_nondet_double() [L30] int main____CPAchecker_TMP_0; VAL [\old(__return_134)=0, \old(__tmp_112_0)=0, \old(__tmp_129_0)=0, \old(__tmp_129_1)=0, \old(__tmp_129_2)=0, __return_134=0, __return_main=0, __tmp_112_0=0, __tmp_129_0=0, __tmp_129_1=0, __tmp_129_2=0, main__i=0] [L31] COND TRUE main__E0 >= -1.0 VAL [\old(__return_134)=0, \old(__tmp_112_0)=0, \old(__tmp_129_0)=0, \old(__tmp_129_1)=0, \old(__tmp_129_2)=0, __return_134=0, __return_main=0, __tmp_112_0=0, __tmp_129_0=0, __tmp_129_1=0, __tmp_129_2=0, main__i=0] [L33] COND TRUE main__E0 <= 1.0 [L35] main____CPAchecker_TMP_0 = 1 VAL [\old(__return_134)=0, \old(__tmp_112_0)=0, \old(__tmp_129_0)=0, \old(__tmp_129_1)=0, \old(__tmp_129_2)=0, __return_134=0, __return_main=0, __tmp_112_0=0, __tmp_129_0=0, __tmp_129_1=0, __tmp_129_2=0, main____CPAchecker_TMP_0=1, main__i=0] [L36] COND TRUE main____CPAchecker_TMP_0 != 0 [L38] int main____CPAchecker_TMP_1; [L39] main____CPAchecker_TMP_1 = __VERIFIER_nondet_int() [L40] COND FALSE !(!(main____CPAchecker_TMP_1 == 0)) [L177] main__S = ((0.999 * main__S) + main__E0) - main__E1 [L44] main__E1 = main__E0 [L45] int main____CPAchecker_TMP_2; VAL [\old(__return_134)=0, \old(__tmp_112_0)=0, \old(__tmp_129_0)=0, \old(__tmp_129_1)=0, \old(__tmp_129_2)=0, __return_134=0, __return_main=0, __tmp_112_0=0, __tmp_129_0=0, __tmp_129_1=0, __tmp_129_2=0, main__E0=61, main__E1=61, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=0, main__i=0] [L46] COND FALSE !(main__S >= -10000.0) VAL [\old(__return_134)=0, \old(__tmp_112_0)=0, \old(__tmp_129_0)=0, \old(__tmp_129_1)=0, \old(__tmp_129_2)=0, __return_134=0, __return_main=0, __tmp_112_0=0, __tmp_129_0=0, __tmp_129_1=0, __tmp_129_2=0, main__E0=61, main__E1=61, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=0, main__i=0] [L166] main____CPAchecker_TMP_2 = 0 VAL [\old(__return_134)=0, \old(__tmp_112_0)=0, \old(__tmp_129_0)=0, \old(__tmp_129_1)=0, \old(__tmp_129_2)=0, __return_134=0, __return_main=0, __tmp_112_0=0, __tmp_129_0=0, __tmp_129_1=0, __tmp_129_2=0, main__E0=61, main__E1=61, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=0, main____CPAchecker_TMP_2=0, main__i=0] [L53] int __tmp_1; [L54] __tmp_1 = main____CPAchecker_TMP_2 [L55] int __VERIFIER_assert__cond; [L56] __VERIFIER_assert__cond = __tmp_1 VAL [\old(__return_134)=0, \old(__tmp_112_0)=0, \old(__tmp_129_0)=0, \old(__tmp_129_1)=0, \old(__tmp_129_2)=0, __VERIFIER_assert__cond=0, __return_134=0, __return_main=0, __tmp_112_0=0, __tmp_129_0=0, __tmp_129_1=0, __tmp_129_2=0, __tmp_1=0, main__E0=61, main__E1=61, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=0, main____CPAchecker_TMP_2=0, main__i=0] [L57] COND TRUE __VERIFIER_assert__cond == 0 VAL [\old(__return_134)=0, \old(__tmp_112_0)=0, \old(__tmp_129_0)=0, \old(__tmp_129_1)=0, \old(__tmp_129_2)=0, __VERIFIER_assert__cond=0, __return_134=0, __return_main=0, __tmp_112_0=0, __tmp_129_0=0, __tmp_129_1=0, __tmp_129_2=0, __tmp_1=0, main__E0=61, main__E1=61, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=0, main____CPAchecker_TMP_2=0, main__i=0] [L59] reach_error() VAL [\old(__return_134)=0, \old(__tmp_112_0)=0, \old(__tmp_129_0)=0, \old(__tmp_129_1)=0, \old(__tmp_129_2)=0, __VERIFIER_assert__cond=0, __return_134=0, __return_main=0, __tmp_112_0=0, __tmp_129_0=0, __tmp_129_1=0, __tmp_129_2=0, __tmp_1=0, main__E0=61, main__E1=61, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=0, main____CPAchecker_TMP_2=0, main__i=0] - UnprovableResult [Line: 105]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 38 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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 [2023-04-01 10:47:23,729 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...