java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-benchs/interpolation.c.p+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-08 01:12:35,815 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-08 01:12:35,818 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-08 01:12:35,837 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-08 01:12:35,838 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-08 01:12:35,840 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-08 01:12:35,842 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-08 01:12:35,851 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-08 01:12:35,854 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-08 01:12:35,858 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-08 01:12:35,860 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-08 01:12:35,862 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-08 01:12:35,863 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-08 01:12:35,864 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-08 01:12:35,864 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-08 01:12:35,865 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-08 01:12:35,866 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-08 01:12:35,867 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-08 01:12:35,868 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-08 01:12:35,870 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-08 01:12:35,872 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-08 01:12:35,875 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-08 01:12:35,876 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-08 01:12:35,877 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-08 01:12:35,881 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-08 01:12:35,891 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-08 01:12:35,892 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-08 01:12:35,892 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-08 01:12:35,894 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 [2019-09-08 01:12:35,920 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-08 01:12:35,920 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-08 01:12:35,921 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-08 01:12:35,922 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-08 01:12:35,922 INFO L138 SettingsManager]: * Use SBE=true [2019-09-08 01:12:35,927 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-08 01:12:35,928 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-08 01:12:35,928 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-08 01:12:35,928 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-08 01:12:35,928 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-08 01:12:35,929 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-08 01:12:35,929 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-08 01:12:35,929 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-08 01:12:35,931 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-08 01:12:35,931 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-08 01:12:35,932 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-08 01:12:35,932 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-08 01:12:35,932 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-08 01:12:35,932 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-08 01:12:35,933 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-08 01:12:35,933 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-08 01:12:35,933 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-08 01:12:35,933 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-08 01:12:35,933 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-08 01:12:35,934 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-08 01:12:35,934 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-08 01:12:35,934 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-08 01:12:35,936 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-08 01:12:35,937 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-08 01:12:35,985 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-08 01:12:35,997 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-08 01:12:36,000 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-08 01:12:36,002 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-08 01:12:36,002 INFO L275 PluginConnector]: CDTParser initialized [2019-09-08 01:12:36,003 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/interpolation.c.p+cfa-reducer.c [2019-09-08 01:12:36,059 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/89ad3889e/f8a960e47c864a838016916646533587/FLAG59e800fc7 [2019-09-08 01:12:36,477 INFO L306 CDTParser]: Found 1 translation units. [2019-09-08 01:12:36,478 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/interpolation.c.p+cfa-reducer.c [2019-09-08 01:12:36,484 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/89ad3889e/f8a960e47c864a838016916646533587/FLAG59e800fc7 [2019-09-08 01:12:36,899 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/89ad3889e/f8a960e47c864a838016916646533587 [2019-09-08 01:12:36,908 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-08 01:12:36,910 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-08 01:12:36,911 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-08 01:12:36,911 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-08 01:12:36,915 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-08 01:12:36,916 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 01:12:36" (1/1) ... [2019-09-08 01:12:36,918 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1cf5770e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:12:36, skipping insertion in model container [2019-09-08 01:12:36,919 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 01:12:36" (1/1) ... [2019-09-08 01:12:36,926 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-08 01:12:36,947 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-08 01:12:37,176 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 01:12:37,187 INFO L188 MainTranslator]: Completed pre-run [2019-09-08 01:12:37,315 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 01:12:37,342 INFO L192 MainTranslator]: Completed translation [2019-09-08 01:12:37,343 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:12:37 WrapperNode [2019-09-08 01:12:37,343 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-08 01:12:37,344 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-08 01:12:37,344 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-08 01:12:37,344 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-08 01:12:37,359 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:12:37" (1/1) ... [2019-09-08 01:12:37,359 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:12:37" (1/1) ... [2019-09-08 01:12:37,379 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:12:37" (1/1) ... [2019-09-08 01:12:37,380 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:12:37" (1/1) ... [2019-09-08 01:12:37,393 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:12:37" (1/1) ... [2019-09-08 01:12:37,397 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:12:37" (1/1) ... [2019-09-08 01:12:37,398 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:12:37" (1/1) ... [2019-09-08 01:12:37,402 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-08 01:12:37,403 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-08 01:12:37,403 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-08 01:12:37,403 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-08 01:12:37,405 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:12:37" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-08 01:12:37,455 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-08 01:12:37,455 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-08 01:12:37,455 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-08 01:12:37,455 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-08 01:12:37,456 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2019-09-08 01:12:37,456 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-08 01:12:37,456 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-08 01:12:37,456 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-08 01:12:37,456 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-08 01:12:37,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2019-09-08 01:12:37,456 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2019-09-08 01:12:37,457 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-08 01:12:37,457 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-08 01:12:37,457 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-08 01:12:37,457 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-09-08 01:12:37,680 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-08 01:12:37,681 INFO L283 CfgBuilder]: Removed 0 assume(true) statements. [2019-09-08 01:12:37,682 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 01:12:37 BoogieIcfgContainer [2019-09-08 01:12:37,682 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-08 01:12:37,683 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-08 01:12:37,683 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-08 01:12:37,687 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-08 01:12:37,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.09 01:12:36" (1/3) ... [2019-09-08 01:12:37,688 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@aa61b56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 01:12:37, skipping insertion in model container [2019-09-08 01:12:37,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:12:37" (2/3) ... [2019-09-08 01:12:37,689 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@aa61b56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 01:12:37, skipping insertion in model container [2019-09-08 01:12:37,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 01:12:37" (3/3) ... [2019-09-08 01:12:37,691 INFO L109 eAbstractionObserver]: Analyzing ICFG interpolation.c.p+cfa-reducer.c [2019-09-08 01:12:37,701 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-08 01:12:37,710 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-08 01:12:37,732 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-08 01:12:37,772 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-08 01:12:37,773 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-08 01:12:37,773 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-08 01:12:37,774 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-08 01:12:37,774 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-08 01:12:37,774 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-08 01:12:37,774 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-08 01:12:37,774 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-08 01:12:37,774 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-08 01:12:37,794 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2019-09-08 01:12:37,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-09-08 01:12:37,801 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:12:37,802 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:12:37,804 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:12:37,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:12:37,811 INFO L82 PathProgramCache]: Analyzing trace with hash -1066142193, now seen corresponding path program 1 times [2019-09-08 01:12:37,813 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:12:37,813 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:12:37,887 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:12:37,887 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:12:37,887 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:12:37,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:12:38,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:12:38,021 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 01:12:38,021 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-08 01:12:38,025 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-08 01:12:38,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-08 01:12:38,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 01:12:38,041 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 3 states. [2019-09-08 01:12:38,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:12:38,081 INFO L93 Difference]: Finished difference Result 41 states and 53 transitions. [2019-09-08 01:12:38,082 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-08 01:12:38,083 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2019-09-08 01:12:38,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:12:38,093 INFO L225 Difference]: With dead ends: 41 [2019-09-08 01:12:38,094 INFO L226 Difference]: Without dead ends: 19 [2019-09-08 01:12:38,097 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 01:12:38,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2019-09-08 01:12:38,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2019-09-08 01:12:38,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-09-08 01:12:38,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2019-09-08 01:12:38,138 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 16 [2019-09-08 01:12:38,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:12:38,139 INFO L475 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2019-09-08 01:12:38,139 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-08 01:12:38,139 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2019-09-08 01:12:38,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-09-08 01:12:38,140 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:12:38,140 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:12:38,141 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:12:38,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:12:38,142 INFO L82 PathProgramCache]: Analyzing trace with hash 474733396, now seen corresponding path program 1 times [2019-09-08 01:12:38,142 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:12:38,142 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:12:38,143 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:12:38,144 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:12:38,144 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:12:38,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:12:38,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:12:38,242 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 01:12:38,242 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-08 01:12:38,248 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-08 01:12:38,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-08 01:12:38,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-08 01:12:38,252 INFO L87 Difference]: Start difference. First operand 19 states and 22 transitions. Second operand 5 states. [2019-09-08 01:12:38,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:12:38,333 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2019-09-08 01:12:38,335 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-08 01:12:38,335 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2019-09-08 01:12:38,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:12:38,336 INFO L225 Difference]: With dead ends: 23 [2019-09-08 01:12:38,336 INFO L226 Difference]: Without dead ends: 19 [2019-09-08 01:12:38,338 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-09-08 01:12:38,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2019-09-08 01:12:38,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2019-09-08 01:12:38,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-09-08 01:12:38,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2019-09-08 01:12:38,347 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 16 [2019-09-08 01:12:38,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:12:38,348 INFO L475 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2019-09-08 01:12:38,349 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-08 01:12:38,349 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2019-09-08 01:12:38,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-09-08 01:12:38,350 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:12:38,351 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:12:38,351 INFO L418 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:12:38,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:12:38,352 INFO L82 PathProgramCache]: Analyzing trace with hash 489837433, now seen corresponding path program 1 times [2019-09-08 01:12:38,352 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:12:38,354 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:12:38,355 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:12:38,356 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:12:38,356 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:12:38,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:12:38,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:12:38,444 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 01:12:38,445 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-08 01:12:38,445 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-08 01:12:38,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-08 01:12:38,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 01:12:38,447 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand 3 states. [2019-09-08 01:12:38,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:12:38,465 INFO L93 Difference]: Finished difference Result 37 states and 41 transitions. [2019-09-08 01:12:38,466 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-08 01:12:38,466 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2019-09-08 01:12:38,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:12:38,467 INFO L225 Difference]: With dead ends: 37 [2019-09-08 01:12:38,467 INFO L226 Difference]: Without dead ends: 29 [2019-09-08 01:12:38,468 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 01:12:38,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-09-08 01:12:38,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 20. [2019-09-08 01:12:38,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-09-08 01:12:38,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2019-09-08 01:12:38,475 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 16 [2019-09-08 01:12:38,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:12:38,476 INFO L475 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2019-09-08 01:12:38,476 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-08 01:12:38,477 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2019-09-08 01:12:38,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-09-08 01:12:38,478 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:12:38,478 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:12:38,478 INFO L418 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:12:38,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:12:38,479 INFO L82 PathProgramCache]: Analyzing trace with hash -1570839537, now seen corresponding path program 1 times [2019-09-08 01:12:38,479 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:12:38,479 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:12:38,480 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:12:38,481 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:12:38,481 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:12:38,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-08 01:12:38,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-08 01:12:38,574 INFO L466 BasicCegarLoop]: Counterexample might be feasible [2019-09-08 01:12:38,606 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.09 01:12:38 BoogieIcfgContainer [2019-09-08 01:12:38,607 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-08 01:12:38,610 INFO L168 Benchmark]: Toolchain (without parser) took 1698.54 ms. Allocated memory was 136.3 MB in the beginning and 198.7 MB in the end (delta: 62.4 MB). Free memory was 91.8 MB in the beginning and 113.2 MB in the end (delta: -21.5 MB). Peak memory consumption was 40.9 MB. Max. memory is 7.1 GB. [2019-09-08 01:12:38,611 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 136.3 MB. Free memory was 110.8 MB in the beginning and 110.6 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-08 01:12:38,612 INFO L168 Benchmark]: CACSL2BoogieTranslator took 432.29 ms. Allocated memory was 136.3 MB in the beginning and 198.7 MB in the end (delta: 62.4 MB). Free memory was 91.6 MB in the beginning and 174.8 MB in the end (delta: -83.2 MB). Peak memory consumption was 24.6 MB. Max. memory is 7.1 GB. [2019-09-08 01:12:38,613 INFO L168 Benchmark]: Boogie Preprocessor took 58.68 ms. Allocated memory is still 198.7 MB. Free memory was 174.8 MB in the beginning and 173.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. [2019-09-08 01:12:38,613 INFO L168 Benchmark]: RCFGBuilder took 279.84 ms. Allocated memory is still 198.7 MB. Free memory was 173.1 MB in the beginning and 157.4 MB in the end (delta: 15.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 7.1 GB. [2019-09-08 01:12:38,614 INFO L168 Benchmark]: TraceAbstraction took 923.49 ms. Allocated memory is still 198.7 MB. Free memory was 157.4 MB in the beginning and 113.2 MB in the end (delta: 44.2 MB). Peak memory consumption was 44.2 MB. Max. memory is 7.1 GB. [2019-09-08 01:12:38,618 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 136.3 MB. Free memory was 110.8 MB in the beginning and 110.6 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 432.29 ms. Allocated memory was 136.3 MB in the beginning and 198.7 MB in the end (delta: 62.4 MB). Free memory was 91.6 MB in the beginning and 174.8 MB in the end (delta: -83.2 MB). Peak memory consumption was 24.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 58.68 ms. Allocated memory is still 198.7 MB. Free memory was 174.8 MB in the beginning and 173.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 279.84 ms. Allocated memory is still 198.7 MB. Free memory was 173.1 MB in the beginning and 157.4 MB in the end (delta: 15.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 923.49 ms. Allocated memory is still 198.7 MB. Free memory was 157.4 MB in the beginning and 113.2 MB in the end (delta: 44.2 MB). Peak memory consumption was 44.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 46]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 28, overapproximation of someBinaryDOUBLEComparisonOperation at line 33, overapproximation of to_real at line 12, overapproximation of someBinaryArithmeticFLOAToperation at line 31. Possible FailurePath: [L1] int __return_main; VAL [\old(__return_main)=23, __return_main=0] [L9] int main__i; [L10] float main__z; [L11] float main__t; [L12] float main__min[5] = { 5, 10, 12, 30, 150 }; [L13] float main__max[5] = { 10, 12, 30, 150, 300 }; [L14] main__t = __VERIFIER_nondet_float() [L15] int main____CPAchecker_TMP_0; [L16] EXPR main__min[0] VAL [__return_main=0, main__max={1:0}, main__min={-1:0}, main__min[0]=25, main__t=24] [L16] COND TRUE main__t >= (main__min[0]) [L18] EXPR main__max[4UL] VAL [__return_main=0, main__max={1:0}, main__max[4UL]=26, main__min={-1:0}, main__t=24] [L18] COND TRUE main__t <= (main__max[4UL]) [L20] main____CPAchecker_TMP_0 = 1 VAL [__return_main=0, main____CPAchecker_TMP_0=1, main__max={1:0}, main__min={-1:0}, main__t=24] [L22] COND TRUE main____CPAchecker_TMP_0 != 0 [L24] main__i = 0 VAL [__return_main=0, main____CPAchecker_TMP_0=1, main__i=0, main__max={1:0}, main__min={-1:0}, main__t=24] [L26] COND TRUE main__i < 5UL [L28] EXPR main__max[main__i] VAL [__return_main=0, main____CPAchecker_TMP_0=1, main__i=0, main__max={1:0}, main__max[main__i]=22, main__min={-1:0}, main__t=24] [L28] COND TRUE main__t <= (main__max[main__i]) [L31] EXPR main__min[main__i] [L31] EXPR main__max[main__i] [L31] EXPR main__min[main__i] [L31] main__z = (main__t - (main__min[main__i])) / ((main__max[main__i]) - (main__min[main__i])) [L32] int main____CPAchecker_TMP_1; VAL [__return_main=0, main____CPAchecker_TMP_0=1, main__i=0, main__max={1:0}, main__min={-1:0}, main__t=24] [L33] COND FALSE !(main__z >= 0.0) VAL [__return_main=0, main____CPAchecker_TMP_0=1, main__i=0, main__max={1:0}, main__min={-1:0}, main__t=24] [L58] main____CPAchecker_TMP_1 = 0 VAL [__return_main=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=0, main__i=0, main__max={1:0}, main__min={-1:0}, main__t=24] [L40] int __tmp_1; [L41] __tmp_1 = main____CPAchecker_TMP_1 [L42] int __VERIFIER_assert__cond; [L43] __VERIFIER_assert__cond = __tmp_1 VAL [__return_main=0, __tmp_1=0, __VERIFIER_assert__cond=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=0, main__i=0, main__max={1:0}, main__min={-1:0}, main__t=24] [L44] COND TRUE __VERIFIER_assert__cond == 0 VAL [__return_main=0, __tmp_1=0, __VERIFIER_assert__cond=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=0, main__i=0, main__max={1:0}, main__min={-1:0}, main__t=24] [L46] __VERIFIER_error() VAL [__return_main=0, __tmp_1=0, __VERIFIER_assert__cond=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=0, main__i=0, main__max={1:0}, main__min={-1:0}, main__t=24] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 24 locations, 1 error locations. UNSAFE Result, 0.8s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 68 SDtfs, 28 SDslu, 83 SDs, 0 SdLazy, 20 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 9 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 65 NumberOfCodeBlocks, 65 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 45 ConstructedInterpolants, 0 QuantifiedInterpolants, 855 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...