/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/automizer/svcomp-Reach-32bit-Automizer_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml -i ../sv-benchmarks/c/floats-esbmc-regression/digits_while.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-31 00:03:01,512 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-31 00:03:01,514 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-31 00:03:01,565 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-03-31 00:03:01,565 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-03-31 00:03:01,568 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-03-31 00:03:01,571 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-03-31 00:03:01,574 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-03-31 00:03:01,593 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-03-31 00:03:01,598 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-03-31 00:03:01,599 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-03-31 00:03:01,601 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-03-31 00:03:01,601 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-03-31 00:03:01,603 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-03-31 00:03:01,604 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-03-31 00:03:01,605 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-03-31 00:03:01,606 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-03-31 00:03:01,607 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-03-31 00:03:01,608 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-03-31 00:03:01,617 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-03-31 00:03:01,619 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-03-31 00:03:01,620 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-03-31 00:03:01,621 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-03-31 00:03:01,622 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-03-31 00:03:01,629 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-03-31 00:03:01,629 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-03-31 00:03:01,629 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-03-31 00:03:01,633 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-03-31 00:03:01,633 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-03-31 00:03:01,634 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-03-31 00:03:01,634 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-03-31 00:03:01,635 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-03-31 00:03:01,641 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-03-31 00:03:01,642 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-03-31 00:03:01,643 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-03-31 00:03:01,643 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-03-31 00:03:01,643 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-03-31 00:03:01,643 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-03-31 00:03:01,643 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-31 00:03:01,644 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-31 00:03:01,653 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-31 00:03:01,655 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-03-31 00:03:01,721 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-31 00:03:01,722 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-31 00:03:01,722 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-31 00:03:01,722 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-31 00:03:01,723 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-31 00:03:01,723 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-31 00:03:01,724 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-03-31 00:03:01,724 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-03-31 00:03:01,724 INFO L138 SettingsManager]: * Use SBE=true [2023-03-31 00:03:01,724 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-31 00:03:01,724 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-31 00:03:01,725 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-31 00:03:01,725 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-31 00:03:01,725 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-31 00:03:01,725 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-31 00:03:01,726 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-31 00:03:01,726 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-31 00:03:01,726 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-31 00:03:01,726 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-31 00:03:01,726 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-31 00:03:01,726 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-31 00:03:01,726 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-31 00:03:01,726 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-03-31 00:03:01,726 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-31 00:03:01,727 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 00:03:01,727 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-31 00:03:01,727 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-31 00:03:01,727 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-31 00:03:01,727 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-03-31 00:03:01,727 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-31 00:03:01,727 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-03-31 00:03:01,728 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-31 00:03:01,728 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-03-31 00:03:01,728 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-03-31 00:03:01,728 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-03-31 00:03:01,728 INFO L138 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-03-31 00:03:02,158 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-31 00:03:02,186 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-31 00:03:02,190 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-31 00:03:02,191 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-31 00:03:02,192 INFO L275 PluginConnector]: CDTParser initialized [2023-03-31 00:03:02,193 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-esbmc-regression/digits_while.c [2023-03-31 00:03:04,111 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-31 00:03:04,429 INFO L351 CDTParser]: Found 1 translation units. [2023-03-31 00:03:04,429 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-esbmc-regression/digits_while.c [2023-03-31 00:03:04,450 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d871eb8d1/b29e8da7ece14c149bdf347267d63c0e/FLAGc89a92dba [2023-03-31 00:03:04,477 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d871eb8d1/b29e8da7ece14c149bdf347267d63c0e [2023-03-31 00:03:04,479 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-31 00:03:04,481 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-31 00:03:04,483 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-31 00:03:04,483 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-31 00:03:04,486 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-31 00:03:04,486 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 12:03:04" (1/1) ... [2023-03-31 00:03:04,487 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65745005 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:03:04, skipping insertion in model container [2023-03-31 00:03:04,488 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 12:03:04" (1/1) ... [2023-03-31 00:03:04,493 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-31 00:03:04,527 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-31 00:03:04,770 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/floats-esbmc-regression/digits_while.c[317,330] [2023-03-31 00:03:04,786 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 00:03:04,798 INFO L203 MainTranslator]: Completed pre-run [2023-03-31 00:03:04,810 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/floats-esbmc-regression/digits_while.c[317,330] [2023-03-31 00:03:04,814 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 00:03:04,828 INFO L208 MainTranslator]: Completed translation [2023-03-31 00:03:04,828 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:03:04 WrapperNode [2023-03-31 00:03:04,828 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-31 00:03:04,830 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-31 00:03:04,830 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-31 00:03:04,830 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-31 00:03:04,839 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:03:04" (1/1) ... [2023-03-31 00:03:04,839 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:03:04" (1/1) ... [2023-03-31 00:03:04,845 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:03:04" (1/1) ... [2023-03-31 00:03:04,845 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:03:04" (1/1) ... [2023-03-31 00:03:04,857 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:03:04" (1/1) ... [2023-03-31 00:03:04,860 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:03:04" (1/1) ... [2023-03-31 00:03:04,862 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:03:04" (1/1) ... [2023-03-31 00:03:04,863 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:03:04" (1/1) ... [2023-03-31 00:03:04,866 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-31 00:03:04,866 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-31 00:03:04,867 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-31 00:03:04,867 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-31 00:03:04,867 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:03:04" (1/1) ... [2023-03-31 00:03:04,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 00:03:04,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 00:03:04,898 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) [2023-03-31 00:03:04,920 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 [2023-03-31 00:03:04,936 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-31 00:03:04,936 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-31 00:03:04,938 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-31 00:03:04,938 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-03-31 00:03:04,938 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-31 00:03:04,938 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-31 00:03:04,938 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-31 00:03:04,938 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-31 00:03:04,938 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-31 00:03:04,939 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-03-31 00:03:04,939 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-31 00:03:04,939 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-31 00:03:04,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-31 00:03:04,939 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-31 00:03:04,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-31 00:03:04,939 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-31 00:03:04,939 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-31 00:03:05,003 INFO L236 CfgBuilder]: Building ICFG [2023-03-31 00:03:05,005 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-31 00:03:05,178 INFO L277 CfgBuilder]: Performing block encoding [2023-03-31 00:03:05,183 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-31 00:03:05,183 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-03-31 00:03:05,185 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 12:03:05 BoogieIcfgContainer [2023-03-31 00:03:05,185 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-31 00:03:05,186 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-31 00:03:05,187 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-31 00:03:05,202 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-31 00:03:05,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.03 12:03:04" (1/3) ... [2023-03-31 00:03:05,203 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cd802f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 12:03:05, skipping insertion in model container [2023-03-31 00:03:05,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:03:04" (2/3) ... [2023-03-31 00:03:05,203 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cd802f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 12:03:05, skipping insertion in model container [2023-03-31 00:03:05,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 12:03:05" (3/3) ... [2023-03-31 00:03:05,204 INFO L112 eAbstractionObserver]: Analyzing ICFG digits_while.c [2023-03-31 00:03:05,232 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-31 00:03:05,232 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-03-31 00:03:05,305 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-31 00:03:05,311 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=PETRI_NET, 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;@99b2a10, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-03-31 00:03:05,311 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-03-31 00:03:05,314 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-03-31 00:03:05,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-03-31 00:03:05,321 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 00:03:05,322 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 00:03:05,323 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 00:03:05,327 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 00:03:05,328 INFO L85 PathProgramCache]: Analyzing trace with hash 614219009, now seen corresponding path program 1 times [2023-03-31 00:03:05,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 00:03:05,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145362589] [2023-03-31 00:03:05,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 00:03:05,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 00:03:05,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:03:05,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 00:03:05,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:03:05,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 00:03:05,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 00:03:05,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145362589] [2023-03-31 00:03:05,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145362589] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 00:03:05,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 00:03:05,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-03-31 00:03:05,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644122942] [2023-03-31 00:03:05,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 00:03:05,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-31 00:03:05,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 00:03:05,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-31 00:03:05,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-03-31 00:03:05,598 INFO L87 Difference]: Start difference. First operand has 19 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 00:03:05,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 00:03:05,675 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2023-03-31 00:03:05,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-31 00:03:05,678 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2023-03-31 00:03:05,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 00:03:05,683 INFO L225 Difference]: With dead ends: 31 [2023-03-31 00:03:05,684 INFO L226 Difference]: Without dead ends: 12 [2023-03-31 00:03:05,686 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-03-31 00:03:05,690 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 11 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-31 00:03:05,691 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 10 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-31 00:03:05,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2023-03-31 00:03:05,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2023-03-31 00:03:05,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 00:03:05,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2023-03-31 00:03:05,736 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 11 [2023-03-31 00:03:05,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 00:03:05,737 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2023-03-31 00:03:05,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 00:03:05,738 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2023-03-31 00:03:05,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-03-31 00:03:05,740 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 00:03:05,740 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 00:03:05,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-31 00:03:05,741 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 00:03:05,741 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 00:03:05,742 INFO L85 PathProgramCache]: Analyzing trace with hash 610524925, now seen corresponding path program 1 times [2023-03-31 00:03:05,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 00:03:05,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112063924] [2023-03-31 00:03:05,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 00:03:05,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 00:03:05,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-03-31 00:03:05,761 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-03-31 00:03:05,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-03-31 00:03:05,788 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-03-31 00:03:05,788 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-03-31 00:03:05,790 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-03-31 00:03:05,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-03-31 00:03:05,794 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-03-31 00:03:05,804 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-03-31 00:03:05,816 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.03 12:03:05 BoogieIcfgContainer [2023-03-31 00:03:05,821 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-03-31 00:03:05,821 INFO L158 Benchmark]: Toolchain (without parser) took 1340.70ms. Allocated memory is still 264.2MB. Free memory was 214.5MB in the beginning and 165.2MB in the end (delta: 49.3MB). Peak memory consumption was 49.3MB. Max. memory is 8.0GB. [2023-03-31 00:03:05,822 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 168.8MB. Free memory was 120.5MB in the beginning and 120.3MB in the end (delta: 184.7kB). There was no memory consumed. Max. memory is 8.0GB. [2023-03-31 00:03:05,822 INFO L158 Benchmark]: CACSL2BoogieTranslator took 345.71ms. Allocated memory is still 264.2MB. Free memory was 214.0MB in the beginning and 204.0MB in the end (delta: 10.0MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2023-03-31 00:03:05,823 INFO L158 Benchmark]: Boogie Preprocessor took 36.26ms. Allocated memory is still 264.2MB. Free memory was 204.0MB in the beginning and 202.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-03-31 00:03:05,823 INFO L158 Benchmark]: RCFGBuilder took 318.30ms. Allocated memory is still 264.2MB. Free memory was 202.4MB in the beginning and 191.9MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-03-31 00:03:05,824 INFO L158 Benchmark]: TraceAbstraction took 634.27ms. Allocated memory is still 264.2MB. Free memory was 190.9MB in the beginning and 165.2MB in the end (delta: 25.7MB). Peak memory consumption was 25.2MB. Max. memory is 8.0GB. [2023-03-31 00:03:05,826 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 168.8MB. Free memory was 120.5MB in the beginning and 120.3MB in the end (delta: 184.7kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 345.71ms. Allocated memory is still 264.2MB. Free memory was 214.0MB in the beginning and 204.0MB in the end (delta: 10.0MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * Boogie Preprocessor took 36.26ms. Allocated memory is still 264.2MB. Free memory was 204.0MB in the beginning and 202.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 318.30ms. Allocated memory is still 264.2MB. Free memory was 202.4MB in the beginning and 191.9MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 634.27ms. Allocated memory is still 264.2MB. Free memory was 190.9MB in the beginning and 165.2MB in the end (delta: 25.7MB). Peak memory consumption was 25.2MB. 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: 4]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryLONGDOUBLEComparisonOperation at line 12, overapproximation of someBinaryArithmeticDOUBLEoperation at line 8. Possible FailurePath: [L8] long double x = 1.0/7.0; [L9] long long res = 0; [L11] int i = 1; VAL [i=1, res=0] [L12] COND FALSE !(x != 0) VAL [i=1, res=0] [L19] CALL __VERIFIER_assert(res == 67050) VAL [\old(cond)=0] [L4] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L4] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 12 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 11 mSDsluCounter, 10 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 14 IncrementalHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 7 mSDtfsCounter, 14 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=0, InterpolantAutomatonStates: 3, 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, 0.1s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 16 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 [2023-03-31 00:03:05,847 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...