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/nla-digbench/freire2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-c6af20d [2019-09-03 20:18:54,364 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-03 20:18:54,367 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-03 20:18:54,384 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-03 20:18:54,385 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-03 20:18:54,386 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-03 20:18:54,388 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-03 20:18:54,390 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-03 20:18:54,391 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-03 20:18:54,392 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-03 20:18:54,393 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-03 20:18:54,394 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-03 20:18:54,395 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-03 20:18:54,395 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-03 20:18:54,396 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-03 20:18:54,397 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-03 20:18:54,398 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-03 20:18:54,399 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-03 20:18:54,401 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-03 20:18:54,402 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-03 20:18:54,404 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-03 20:18:54,405 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-03 20:18:54,406 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-03 20:18:54,409 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-03 20:18:54,411 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-03 20:18:54,416 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-03 20:18:54,416 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-03 20:18:54,417 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-03 20:18:54,419 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-03 20:18:54,420 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-03 20:18:54,420 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-03 20:18:54,423 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-03 20:18:54,423 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-03 20:18:54,423 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-03 20:18:54,424 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-03 20:18:54,426 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-03 20:18:54,426 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 [2019-09-03 20:18:54,440 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-03 20:18:54,440 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-03 20:18:54,441 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-03 20:18:54,442 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-03 20:18:54,442 INFO L138 SettingsManager]: * Use SBE=true [2019-09-03 20:18:54,442 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-03 20:18:54,442 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-03 20:18:54,443 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-03 20:18:54,443 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-03 20:18:54,443 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-03 20:18:54,443 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-03 20:18:54,443 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-03 20:18:54,444 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-03 20:18:54,444 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-03 20:18:54,444 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-03 20:18:54,444 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-03 20:18:54,444 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-03 20:18:54,445 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-03 20:18:54,445 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-03 20:18:54,445 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-03 20:18:54,446 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-03 20:18:54,447 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-03 20:18:54,447 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-03 20:18:54,447 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-03 20:18:54,447 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-03 20:18:54,447 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-03 20:18:54,448 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-03 20:18:54,448 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-03 20:18:54,448 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-03 20:18:54,498 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-03 20:18:54,509 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-03 20:18:54,512 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-03 20:18:54,513 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-03 20:18:54,514 INFO L275 PluginConnector]: CDTParser initialized [2019-09-03 20:18:54,514 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/freire2.c [2019-09-03 20:18:54,571 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1df735333/047beacb02864fd7b8547ebe8b279ab2/FLAG043246a38 [2019-09-03 20:18:54,983 INFO L306 CDTParser]: Found 1 translation units. [2019-09-03 20:18:54,984 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/freire2.c [2019-09-03 20:18:54,993 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1df735333/047beacb02864fd7b8547ebe8b279ab2/FLAG043246a38 [2019-09-03 20:18:55,385 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1df735333/047beacb02864fd7b8547ebe8b279ab2 [2019-09-03 20:18:55,394 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-03 20:18:55,396 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-03 20:18:55,397 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-03 20:18:55,397 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-03 20:18:55,400 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-03 20:18:55,401 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.09 08:18:55" (1/1) ... [2019-09-03 20:18:55,404 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@772df1e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:18:55, skipping insertion in model container [2019-09-03 20:18:55,404 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.09 08:18:55" (1/1) ... [2019-09-03 20:18:55,411 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-03 20:18:55,433 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-03 20:18:55,646 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-03 20:18:55,651 INFO L188 MainTranslator]: Completed pre-run [2019-09-03 20:18:55,676 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-03 20:18:55,774 INFO L192 MainTranslator]: Completed translation [2019-09-03 20:18:55,775 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:18:55 WrapperNode [2019-09-03 20:18:55,775 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-03 20:18:55,776 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-03 20:18:55,776 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-03 20:18:55,776 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-03 20:18:55,785 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:18:55" (1/1) ... [2019-09-03 20:18:55,786 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:18:55" (1/1) ... [2019-09-03 20:18:55,791 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:18:55" (1/1) ... [2019-09-03 20:18:55,791 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:18:55" (1/1) ... [2019-09-03 20:18:55,798 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:18:55" (1/1) ... [2019-09-03 20:18:55,802 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:18:55" (1/1) ... [2019-09-03 20:18:55,803 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:18:55" (1/1) ... [2019-09-03 20:18:55,805 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-03 20:18:55,806 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-03 20:18:55,806 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-03 20:18:55,806 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-03 20:18:55,807 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:18:55" (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 [2019-09-03 20:18:55,855 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-03 20:18:55,855 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-03 20:18:55,855 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-03 20:18:55,855 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-03 20:18:55,856 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-03 20:18:55,856 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2019-09-03 20:18:55,856 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-03 20:18:55,857 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-03 20:18:55,857 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-03 20:18:55,857 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-03 20:18:55,857 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-03 20:18:56,032 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-03 20:18:56,032 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-03 20:18:56,033 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.09 08:18:56 BoogieIcfgContainer [2019-09-03 20:18:56,034 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-03 20:18:56,034 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-03 20:18:56,035 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-03 20:18:56,037 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-03 20:18:56,038 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.09 08:18:55" (1/3) ... [2019-09-03 20:18:56,038 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ac62074 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.09 08:18:56, skipping insertion in model container [2019-09-03 20:18:56,039 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:18:55" (2/3) ... [2019-09-03 20:18:56,039 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ac62074 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.09 08:18:56, skipping insertion in model container [2019-09-03 20:18:56,039 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.09 08:18:56" (3/3) ... [2019-09-03 20:18:56,041 INFO L109 eAbstractionObserver]: Analyzing ICFG freire2.c [2019-09-03 20:18:56,050 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-03 20:18:56,057 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-03 20:18:56,073 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-03 20:18:56,099 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-03 20:18:56,099 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-03 20:18:56,100 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-03 20:18:56,100 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-03 20:18:56,100 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-03 20:18:56,100 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-03 20:18:56,100 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-03 20:18:56,100 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-03 20:18:56,101 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-03 20:18:56,117 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2019-09-03 20:18:56,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-09-03 20:18:56,123 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 20:18:56,124 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 20:18:56,126 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 20:18:56,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 20:18:56,130 INFO L82 PathProgramCache]: Analyzing trace with hash -1435220999, now seen corresponding path program 1 times [2019-09-03 20:18:56,132 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-03 20:18:56,132 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-03 20:18:56,169 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:18:56,169 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 20:18:56,169 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:18:56,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 20:18:56,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-03 20:18:56,224 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-03 20:18:56,224 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-03 20:18:56,228 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-03 20:18:56,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-03 20:18:56,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-03 20:18:56,244 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 2 states. [2019-09-03 20:18:56,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 20:18:56,268 INFO L93 Difference]: Finished difference Result 43 states and 65 transitions. [2019-09-03 20:18:56,268 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-03 20:18:56,269 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-09-03 20:18:56,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 20:18:56,277 INFO L225 Difference]: With dead ends: 43 [2019-09-03 20:18:56,277 INFO L226 Difference]: Without dead ends: 19 [2019-09-03 20:18:56,281 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-03 20:18:56,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2019-09-03 20:18:56,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2019-09-03 20:18:56,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-09-03 20:18:56,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 24 transitions. [2019-09-03 20:18:56,321 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 24 transitions. Word has length 10 [2019-09-03 20:18:56,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 20:18:56,321 INFO L475 AbstractCegarLoop]: Abstraction has 19 states and 24 transitions. [2019-09-03 20:18:56,322 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-03 20:18:56,322 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 24 transitions. [2019-09-03 20:18:56,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-09-03 20:18:56,323 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 20:18:56,323 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 20:18:56,323 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 20:18:56,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 20:18:56,324 INFO L82 PathProgramCache]: Analyzing trace with hash -1444634955, now seen corresponding path program 1 times [2019-09-03 20:18:56,324 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-03 20:18:56,324 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-03 20:18:56,325 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:18:56,325 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 20:18:56,325 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:18:56,331 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-03 20:18:56,331 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-03 20:18:56,331 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-03 20:18:56,352 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 20:18:56,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-03 20:18:56,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-03 20:18:56,391 INFO L466 BasicCegarLoop]: Counterexample might be feasible [2019-09-03 20:18:56,419 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.09 08:18:56 BoogieIcfgContainer [2019-09-03 20:18:56,419 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-03 20:18:56,423 INFO L168 Benchmark]: Toolchain (without parser) took 1025.31 ms. Allocated memory was 134.2 MB in the beginning and 199.8 MB in the end (delta: 65.5 MB). Free memory was 88.4 MB in the beginning and 137.9 MB in the end (delta: -49.5 MB). Peak memory consumption was 16.0 MB. Max. memory is 7.1 GB. [2019-09-03 20:18:56,425 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 134.2 MB. Free memory was 108.4 MB in the beginning and 108.2 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-03 20:18:56,426 INFO L168 Benchmark]: CACSL2BoogieTranslator took 378.74 ms. Allocated memory was 134.2 MB in the beginning and 199.8 MB in the end (delta: 65.5 MB). Free memory was 88.2 MB in the beginning and 177.3 MB in the end (delta: -89.2 MB). Peak memory consumption was 25.6 MB. Max. memory is 7.1 GB. [2019-09-03 20:18:56,427 INFO L168 Benchmark]: Boogie Preprocessor took 29.51 ms. Allocated memory is still 199.8 MB. Free memory was 177.3 MB in the beginning and 175.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2019-09-03 20:18:56,428 INFO L168 Benchmark]: RCFGBuilder took 228.06 ms. Allocated memory is still 199.8 MB. Free memory was 175.2 MB in the beginning and 163.3 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 7.1 GB. [2019-09-03 20:18:56,430 INFO L168 Benchmark]: TraceAbstraction took 384.94 ms. Allocated memory is still 199.8 MB. Free memory was 162.7 MB in the beginning and 137.9 MB in the end (delta: 24.8 MB). Peak memory consumption was 24.8 MB. Max. memory is 7.1 GB. [2019-09-03 20:18:56,435 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 134.2 MB. Free memory was 108.4 MB in the beginning and 108.2 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 378.74 ms. Allocated memory was 134.2 MB in the beginning and 199.8 MB in the end (delta: 65.5 MB). Free memory was 88.2 MB in the beginning and 177.3 MB in the end (delta: -89.2 MB). Peak memory consumption was 25.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 29.51 ms. Allocated memory is still 199.8 MB. Free memory was 177.3 MB in the beginning and 175.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 228.06 ms. Allocated memory is still 199.8 MB. Free memory was 175.2 MB in the beginning and 163.3 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 384.94 ms. Allocated memory is still 199.8 MB. Free memory was 162.7 MB in the beginning and 137.9 MB in the end (delta: 24.8 MB). Peak memory consumption was 24.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 14]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of to_int at line 28. Possible FailurePath: [L20] int r; [L21] double a, x, s; [L22] a = __VERIFIER_nondet_double() [L23] x = a [L24] s = 3.25 [L25] r = 1 VAL [a=0, r=1, s=13/4, x=0] [L27] COND TRUE 1 VAL [a=0, r=1, s=13/4, x=0] [L28] CALL __VERIFIER_assert((int)(4*s) - 12*r*r == 1) VAL [\old(cond)=0] [L12] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L14] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 24 locations, 1 error locations. UNSAFE Result, 0.3s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 29 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 81 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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...