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/loops/nec11.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-673a906-m [2019-10-02 11:28:22,808 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-02 11:28:22,810 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-02 11:28:22,822 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-02 11:28:22,822 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-02 11:28:22,823 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-02 11:28:22,824 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-02 11:28:22,826 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-02 11:28:22,828 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-02 11:28:22,829 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-02 11:28:22,830 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-02 11:28:22,831 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-02 11:28:22,831 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-02 11:28:22,832 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-02 11:28:22,833 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-02 11:28:22,834 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-02 11:28:22,835 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-02 11:28:22,836 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-02 11:28:22,838 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-02 11:28:22,840 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-02 11:28:22,842 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-02 11:28:22,843 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-02 11:28:22,844 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-02 11:28:22,845 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-02 11:28:22,848 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-02 11:28:22,851 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-02 11:28:22,852 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-02 11:28:22,853 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-02 11:28:22,854 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-02 11:28:22,855 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-02 11:28:22,855 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-02 11:28:22,856 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-02 11:28:22,856 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-02 11:28:22,856 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-02 11:28:22,857 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-02 11:28:22,858 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-02 11:28:22,858 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 [2019-10-02 11:28:22,873 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-02 11:28:22,873 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-02 11:28:22,875 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-02 11:28:22,875 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-02 11:28:22,875 INFO L138 SettingsManager]: * Use SBE=true [2019-10-02 11:28:22,875 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-02 11:28:22,876 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-02 11:28:22,876 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-02 11:28:22,876 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-02 11:28:22,876 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-02 11:28:22,876 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-02 11:28:22,876 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-02 11:28:22,877 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-02 11:28:22,877 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-02 11:28:22,877 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-02 11:28:22,877 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-02 11:28:22,877 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-02 11:28:22,878 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-02 11:28:22,878 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-02 11:28:22,878 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-02 11:28:22,878 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-02 11:28:22,878 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-02 11:28:22,879 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-02 11:28:22,879 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-02 11:28:22,879 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-02 11:28:22,879 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-02 11:28:22,879 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-02 11:28:22,880 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-02 11:28:22,880 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-02 11:28:22,909 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-02 11:28:22,921 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-02 11:28:22,925 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-02 11:28:22,926 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-02 11:28:22,927 INFO L275 PluginConnector]: CDTParser initialized [2019-10-02 11:28:22,927 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/nec11.c [2019-10-02 11:28:23,000 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2fefd7647/b68906bed4b74d12a356900f37762514/FLAG84816645a [2019-10-02 11:28:23,433 INFO L306 CDTParser]: Found 1 translation units. [2019-10-02 11:28:23,433 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/nec11.c [2019-10-02 11:28:23,440 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2fefd7647/b68906bed4b74d12a356900f37762514/FLAG84816645a [2019-10-02 11:28:23,795 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2fefd7647/b68906bed4b74d12a356900f37762514 [2019-10-02 11:28:23,815 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-02 11:28:23,818 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-02 11:28:23,820 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-02 11:28:23,821 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-02 11:28:23,824 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-02 11:28:23,825 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 11:28:23" (1/1) ... [2019-10-02 11:28:23,829 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73e9c6b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:28:23, skipping insertion in model container [2019-10-02 11:28:23,829 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 11:28:23" (1/1) ... [2019-10-02 11:28:23,837 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-02 11:28:23,856 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-02 11:28:24,071 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 11:28:24,080 INFO L188 MainTranslator]: Completed pre-run [2019-10-02 11:28:24,100 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 11:28:24,116 INFO L192 MainTranslator]: Completed translation [2019-10-02 11:28:24,116 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:28:24 WrapperNode [2019-10-02 11:28:24,116 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-02 11:28:24,117 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-02 11:28:24,118 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-02 11:28:24,118 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-02 11:28:24,214 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:28:24" (1/1) ... [2019-10-02 11:28:24,214 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:28:24" (1/1) ... [2019-10-02 11:28:24,220 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:28:24" (1/1) ... [2019-10-02 11:28:24,220 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:28:24" (1/1) ... [2019-10-02 11:28:24,224 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:28:24" (1/1) ... [2019-10-02 11:28:24,228 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:28:24" (1/1) ... [2019-10-02 11:28:24,229 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:28:24" (1/1) ... [2019-10-02 11:28:24,230 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-02 11:28:24,231 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-02 11:28:24,231 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-02 11:28:24,231 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-02 11:28:24,232 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:28:24" (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 [2019-10-02 11:28:24,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-02 11:28:24,296 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-02 11:28:24,296 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-02 11:28:24,296 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-02 11:28:24,296 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-02 11:28:24,296 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-02 11:28:24,296 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-10-02 11:28:24,296 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-02 11:28:24,296 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-02 11:28:24,297 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-02 11:28:24,458 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-02 11:28:24,458 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-02 11:28:24,459 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 11:28:24 BoogieIcfgContainer [2019-10-02 11:28:24,459 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-02 11:28:24,461 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-02 11:28:24,461 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-02 11:28:24,464 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-02 11:28:24,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.10 11:28:23" (1/3) ... [2019-10-02 11:28:24,465 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b03d9d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 11:28:24, skipping insertion in model container [2019-10-02 11:28:24,465 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:28:24" (2/3) ... [2019-10-02 11:28:24,466 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b03d9d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 11:28:24, skipping insertion in model container [2019-10-02 11:28:24,466 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 11:28:24" (3/3) ... [2019-10-02 11:28:24,468 INFO L109 eAbstractionObserver]: Analyzing ICFG nec11.c [2019-10-02 11:28:24,479 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-02 11:28:24,487 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-02 11:28:24,521 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-02 11:28:24,563 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-10-02 11:28:24,564 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-10-02 11:28:24,564 INFO L378 AbstractCegarLoop]: Hoare is true [2019-10-02 11:28:24,564 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-02 11:28:24,564 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-02 11:28:24,564 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-02 11:28:24,565 INFO L382 AbstractCegarLoop]: Difference is false [2019-10-02 11:28:24,565 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-02 11:28:24,565 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-02 11:28:24,588 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2019-10-02 11:28:24,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-02 11:28:24,594 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 11:28:24,595 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 11:28:24,598 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 11:28:24,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 11:28:24,604 INFO L82 PathProgramCache]: Analyzing trace with hash -147882559, now seen corresponding path program 1 times [2019-10-02 11:28:24,606 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 11:28:24,607 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 11:28:24,664 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 11:28:24,664 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 11:28:24,665 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 11:28:24,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 11:28:24,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 11:28:24,726 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 11:28:24,727 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-02 11:28:24,731 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-02 11:28:24,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-02 11:28:24,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-02 11:28:24,748 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2019-10-02 11:28:24,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 11:28:24,773 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2019-10-02 11:28:24,773 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-02 11:28:24,775 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-10-02 11:28:24,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 11:28:24,784 INFO L225 Difference]: With dead ends: 32 [2019-10-02 11:28:24,784 INFO L226 Difference]: Without dead ends: 13 [2019-10-02 11:28:24,788 INFO L640 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 [2019-10-02 11:28:24,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-10-02 11:28:24,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2019-10-02 11:28:24,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-10-02 11:28:24,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2019-10-02 11:28:24,826 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 10 [2019-10-02 11:28:24,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 11:28:24,827 INFO L475 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2019-10-02 11:28:24,827 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-02 11:28:24,827 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2019-10-02 11:28:24,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-02 11:28:24,828 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 11:28:24,828 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 11:28:24,828 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 11:28:24,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 11:28:24,829 INFO L82 PathProgramCache]: Analyzing trace with hash -158041290, now seen corresponding path program 1 times [2019-10-02 11:28:24,829 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 11:28:24,830 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 11:28:24,834 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 11:28:24,834 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 11:28:24,835 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 11:28:24,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-02 11:28:24,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-02 11:28:24,889 INFO L478 BasicCegarLoop]: Counterexample might be feasible [2019-10-02 11:28:24,908 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.10 11:28:24 BoogieIcfgContainer [2019-10-02 11:28:24,908 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-02 11:28:24,911 INFO L168 Benchmark]: Toolchain (without parser) took 1093.38 ms. Allocated memory was 132.6 MB in the beginning and 199.8 MB in the end (delta: 67.1 MB). Free memory was 87.2 MB in the beginning and 142.7 MB in the end (delta: -55.5 MB). Peak memory consumption was 11.6 MB. Max. memory is 7.1 GB. [2019-10-02 11:28:24,912 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 132.6 MB. Free memory was 105.6 MB in the beginning and 105.4 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-10-02 11:28:24,914 INFO L168 Benchmark]: CACSL2BoogieTranslator took 297.08 ms. Allocated memory is still 132.6 MB. Free memory was 87.0 MB in the beginning and 77.6 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2019-10-02 11:28:24,915 INFO L168 Benchmark]: Boogie Preprocessor took 113.30 ms. Allocated memory was 132.6 MB in the beginning and 199.8 MB in the end (delta: 67.1 MB). Free memory was 77.6 MB in the beginning and 176.7 MB in the end (delta: -99.0 MB). Peak memory consumption was 16.4 MB. Max. memory is 7.1 GB. [2019-10-02 11:28:24,916 INFO L168 Benchmark]: RCFGBuilder took 228.70 ms. Allocated memory is still 199.8 MB. Free memory was 176.7 MB in the beginning and 165.0 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.6 MB. Max. memory is 7.1 GB. [2019-10-02 11:28:24,917 INFO L168 Benchmark]: TraceAbstraction took 447.63 ms. Allocated memory is still 199.8 MB. Free memory was 164.4 MB in the beginning and 142.7 MB in the end (delta: 21.7 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. [2019-10-02 11:28:24,922 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 132.6 MB. Free memory was 105.6 MB in the beginning and 105.4 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 297.08 ms. Allocated memory is still 132.6 MB. Free memory was 87.0 MB in the beginning and 77.6 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 113.30 ms. Allocated memory was 132.6 MB in the beginning and 199.8 MB in the end (delta: 67.1 MB). Free memory was 77.6 MB in the beginning and 176.7 MB in the end (delta: -99.0 MB). Peak memory consumption was 16.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 228.70 ms. Allocated memory is still 199.8 MB. Free memory was 176.7 MB in the beginning and 165.0 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 447.63 ms. Allocated memory is still 199.8 MB. Free memory was 164.4 MB in the beginning and 142.7 MB in the end (delta: 21.7 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 5]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L13] int a[5]; [L14] int len=0; [L15] _Bool c=__VERIFIER_nondet_bool(); [L16] int i; VAL [c=0, len=0] [L19] COND FALSE !(\read(c)) VAL [c=0, len=0] [L28] CALL __VERIFIER_assert(len==5) VAL [\old(cond)=0] [L4] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L5] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 20 locations, 1 error locations. UNSAFE Result, 0.3s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 21 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=20occurred 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 proved your program to be incorrect! Received shutdown request...