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/loop-lit/hhk2008.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-673a906-m [2019-10-02 11:19:46,610 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-02 11:19:46,612 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-02 11:19:46,623 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-02 11:19:46,624 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-02 11:19:46,625 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-02 11:19:46,626 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-02 11:19:46,637 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-02 11:19:46,641 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-02 11:19:46,642 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-02 11:19:46,643 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-02 11:19:46,644 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-02 11:19:46,644 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-02 11:19:46,645 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-02 11:19:46,646 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-02 11:19:46,647 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-02 11:19:46,648 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-02 11:19:46,648 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-02 11:19:46,650 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-02 11:19:46,652 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-02 11:19:46,653 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-02 11:19:46,655 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-02 11:19:46,657 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-02 11:19:46,658 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-02 11:19:46,662 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-02 11:19:46,669 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-02 11:19:46,670 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-02 11:19:46,670 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-02 11:19:46,671 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 11:19:46,685 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-02 11:19:46,685 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-02 11:19:46,686 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-02 11:19:46,687 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-02 11:19:46,687 INFO L138 SettingsManager]: * Use SBE=true [2019-10-02 11:19:46,687 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-02 11:19:46,687 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-02 11:19:46,688 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-02 11:19:46,688 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-02 11:19:46,688 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-02 11:19:46,688 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-02 11:19:46,688 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-02 11:19:46,689 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-02 11:19:46,689 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-02 11:19:46,689 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-02 11:19:46,689 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-02 11:19:46,689 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-02 11:19:46,690 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-02 11:19:46,690 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-02 11:19:46,690 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-02 11:19:46,690 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-02 11:19:46,690 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-02 11:19:46,691 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-02 11:19:46,691 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-02 11:19:46,691 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-02 11:19:46,691 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-02 11:19:46,691 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-02 11:19:46,692 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-02 11:19:46,692 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-02 11:19:46,720 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-02 11:19:46,733 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-02 11:19:46,737 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-02 11:19:46,738 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-02 11:19:46,739 INFO L275 PluginConnector]: CDTParser initialized [2019-10-02 11:19:46,740 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/hhk2008.i [2019-10-02 11:19:46,810 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82a33492b/c901227efa304f27b13d19c04f669ac8/FLAGe8156a865 [2019-10-02 11:19:47,261 INFO L306 CDTParser]: Found 1 translation units. [2019-10-02 11:19:47,261 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/hhk2008.i [2019-10-02 11:19:47,266 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82a33492b/c901227efa304f27b13d19c04f669ac8/FLAGe8156a865 [2019-10-02 11:19:47,644 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82a33492b/c901227efa304f27b13d19c04f669ac8 [2019-10-02 11:19:47,654 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-02 11:19:47,656 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-02 11:19:47,657 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-02 11:19:47,657 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-02 11:19:47,661 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-02 11:19:47,662 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 11:19:47" (1/1) ... [2019-10-02 11:19:47,665 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7278d8d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:19:47, skipping insertion in model container [2019-10-02 11:19:47,665 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 11:19:47" (1/1) ... [2019-10-02 11:19:47,673 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-02 11:19:47,687 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-02 11:19:47,847 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 11:19:47,851 INFO L188 MainTranslator]: Completed pre-run [2019-10-02 11:19:47,869 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 11:19:47,886 INFO L192 MainTranslator]: Completed translation [2019-10-02 11:19:47,886 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:19:47 WrapperNode [2019-10-02 11:19:47,887 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-02 11:19:47,888 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-02 11:19:47,888 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-02 11:19:47,888 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-02 11:19:47,903 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:19:47" (1/1) ... [2019-10-02 11:19:47,903 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:19:47" (1/1) ... [2019-10-02 11:19:47,909 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:19:47" (1/1) ... [2019-10-02 11:19:47,909 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:19:47" (1/1) ... [2019-10-02 11:19:47,913 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:19:47" (1/1) ... [2019-10-02 11:19:47,919 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:19:47" (1/1) ... [2019-10-02 11:19:47,920 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:19:47" (1/1) ... [2019-10-02 11:19:48,013 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-02 11:19:48,014 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-02 11:19:48,014 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-02 11:19:48,014 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-02 11:19:48,015 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:19:47" (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 11:19:48,081 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-02 11:19:48,082 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-02 11:19:48,082 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-02 11:19:48,082 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-02 11:19:48,082 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-02 11:19:48,082 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-02 11:19:48,082 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-02 11:19:48,082 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-02 11:19:48,083 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-02 11:19:48,083 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-02 11:19:48,083 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-02 11:19:48,248 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-02 11:19:48,249 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-02 11:19:48,250 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 11:19:48 BoogieIcfgContainer [2019-10-02 11:19:48,250 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-02 11:19:48,251 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-02 11:19:48,252 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-02 11:19:48,254 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-02 11:19:48,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.10 11:19:47" (1/3) ... [2019-10-02 11:19:48,256 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@419e1bec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 11:19:48, skipping insertion in model container [2019-10-02 11:19:48,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:19:47" (2/3) ... [2019-10-02 11:19:48,256 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@419e1bec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 11:19:48, skipping insertion in model container [2019-10-02 11:19:48,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 11:19:48" (3/3) ... [2019-10-02 11:19:48,258 INFO L109 eAbstractionObserver]: Analyzing ICFG hhk2008.i [2019-10-02 11:19:48,269 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-02 11:19:48,275 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-02 11:19:48,288 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-02 11:19:48,319 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-10-02 11:19:48,319 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-10-02 11:19:48,320 INFO L378 AbstractCegarLoop]: Hoare is true [2019-10-02 11:19:48,320 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-02 11:19:48,320 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-02 11:19:48,320 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-02 11:19:48,320 INFO L382 AbstractCegarLoop]: Difference is false [2019-10-02 11:19:48,320 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-02 11:19:48,321 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-02 11:19:48,338 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2019-10-02 11:19:48,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-10-02 11:19:48,344 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 11:19:48,345 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 11:19:48,347 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 11:19:48,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 11:19:48,352 INFO L82 PathProgramCache]: Analyzing trace with hash 1632835705, now seen corresponding path program 1 times [2019-10-02 11:19:48,354 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 11:19:48,354 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 11:19:48,402 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 11:19:48,402 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 11:19:48,402 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 11:19:48,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 11:19:48,702 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 11:19:48,704 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 11:19:48,705 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-02 11:19:48,708 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-02 11:19:48,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-02 11:19:48,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-10-02 11:19:48,721 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 6 states. [2019-10-02 11:19:48,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 11:19:48,819 INFO L93 Difference]: Finished difference Result 41 states and 50 transitions. [2019-10-02 11:19:48,820 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-02 11:19:48,821 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2019-10-02 11:19:48,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 11:19:48,830 INFO L225 Difference]: With dead ends: 41 [2019-10-02 11:19:48,830 INFO L226 Difference]: Without dead ends: 14 [2019-10-02 11:19:48,834 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-10-02 11:19:48,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-10-02 11:19:48,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2019-10-02 11:19:48,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-10-02 11:19:48,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2019-10-02 11:19:48,869 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2019-10-02 11:19:48,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 11:19:48,870 INFO L475 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2019-10-02 11:19:48,870 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-02 11:19:48,870 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2019-10-02 11:19:48,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-10-02 11:19:48,871 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 11:19:48,871 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 11:19:48,871 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 11:19:48,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 11:19:48,872 INFO L82 PathProgramCache]: Analyzing trace with hash -886162946, now seen corresponding path program 1 times [2019-10-02 11:19:48,872 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 11:19:48,872 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 11:19:48,874 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 11:19:48,874 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 11:19:48,874 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 11:19:48,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 11:19:49,047 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 11:19:49,047 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 11:19:49,047 INFO L224 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 -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-10-02 11:19:49,069 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 11:19:49,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 11:19:49,087 INFO L256 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 15 conjunts are in the unsatisfiable core [2019-10-02 11:19:49,093 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-02 11:19:49,192 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-02 11:19:49,238 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 11:19:49,244 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-02 11:19:49,245 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2019-10-02 11:19:49,245 INFO L454 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-02 11:19:49,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-02 11:19:49,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2019-10-02 11:19:49,247 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 12 states. [2019-10-02 11:19:49,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 11:19:49,477 INFO L93 Difference]: Finished difference Result 16 states and 17 transitions. [2019-10-02 11:19:49,478 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-02 11:19:49,478 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 13 [2019-10-02 11:19:49,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 11:19:49,479 INFO L225 Difference]: With dead ends: 16 [2019-10-02 11:19:49,479 INFO L226 Difference]: Without dead ends: 0 [2019-10-02 11:19:49,482 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2019-10-02 11:19:49,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-02 11:19:49,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-02 11:19:49,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-02 11:19:49,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-02 11:19:49,484 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2019-10-02 11:19:49,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 11:19:49,484 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-02 11:19:49,484 INFO L476 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-02 11:19:49,484 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-02 11:19:49,485 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-02 11:19:49,490 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-02 11:19:49,613 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2019-10-02 11:19:49,613 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-02 11:19:49,613 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-02 11:19:49,614 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-10-02 11:19:49,614 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-02 11:19:49,614 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-02 11:19:49,614 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 10 24) the Hoare annotation is: true [2019-10-02 11:19:49,614 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 10 24) no Hoare annotation was computed. [2019-10-02 11:19:49,615 INFO L443 ceAbstractionStarter]: For program point L22(line 22) no Hoare annotation was computed. [2019-10-02 11:19:49,615 INFO L439 ceAbstractionStarter]: At program point L18-2(lines 18 21) the Hoare annotation is: (let ((.cse1 (+ main_~res~0 main_~cnt~0)) (.cse0 (+ main_~a~0 main_~b~0))) (and (<= .cse0 .cse1) (< main_~res~0 (+ main_~a~0 main_~b~0 1)) (<= .cse1 .cse0))) [2019-10-02 11:19:49,616 INFO L443 ceAbstractionStarter]: For program point L15(line 15) no Hoare annotation was computed. [2019-10-02 11:19:49,618 INFO L439 ceAbstractionStarter]: At program point L18-3(lines 18 21) the Hoare annotation is: (and (<= (+ main_~a~0 main_~b~0) main_~res~0) (< main_~res~0 (+ main_~a~0 main_~b~0 1))) [2019-10-02 11:19:49,618 INFO L443 ceAbstractionStarter]: For program point L14(line 14) no Hoare annotation was computed. [2019-10-02 11:19:49,618 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 10 24) no Hoare annotation was computed. [2019-10-02 11:19:49,619 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2019-10-02 11:19:49,619 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2019-10-02 11:19:49,619 INFO L443 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-10-02 11:19:49,619 INFO L443 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-10-02 11:19:49,620 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-10-02 11:19:49,620 INFO L443 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2019-10-02 11:19:49,641 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.10 11:19:49 BoogieIcfgContainer [2019-10-02 11:19:49,641 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-02 11:19:49,645 INFO L168 Benchmark]: Toolchain (without parser) took 1987.38 ms. Allocated memory was 139.5 MB in the beginning and 223.3 MB in the end (delta: 83.9 MB). Free memory was 87.1 MB in the beginning and 191.8 MB in the end (delta: -104.7 MB). Peak memory consumption was 78.6 MB. Max. memory is 7.1 GB. [2019-10-02 11:19:49,647 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 139.5 MB. Free memory was 105.3 MB in the beginning and 105.1 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-10-02 11:19:49,650 INFO L168 Benchmark]: CACSL2BoogieTranslator took 230.02 ms. Allocated memory is still 139.5 MB. Free memory was 86.7 MB in the beginning and 77.4 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2019-10-02 11:19:49,660 INFO L168 Benchmark]: Boogie Preprocessor took 126.09 ms. Allocated memory was 139.5 MB in the beginning and 199.8 MB in the end (delta: 60.3 MB). Free memory was 77.4 MB in the beginning and 178.8 MB in the end (delta: -101.4 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. [2019-10-02 11:19:49,661 INFO L168 Benchmark]: RCFGBuilder took 236.32 ms. Allocated memory is still 199.8 MB. Free memory was 178.8 MB in the beginning and 166.4 MB in the end (delta: 12.4 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. [2019-10-02 11:19:49,663 INFO L168 Benchmark]: TraceAbstraction took 1389.98 ms. Allocated memory was 199.8 MB in the beginning and 223.3 MB in the end (delta: 23.6 MB). Free memory was 165.8 MB in the beginning and 191.8 MB in the end (delta: -26.0 MB). Peak memory consumption was 97.0 MB. Max. memory is 7.1 GB. [2019-10-02 11:19:49,672 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 139.5 MB. Free memory was 105.3 MB in the beginning and 105.1 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 230.02 ms. Allocated memory is still 139.5 MB. Free memory was 86.7 MB in the beginning and 77.4 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 126.09 ms. Allocated memory was 139.5 MB in the beginning and 199.8 MB in the end (delta: 60.3 MB). Free memory was 77.4 MB in the beginning and 178.8 MB in the end (delta: -101.4 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 236.32 ms. Allocated memory is still 199.8 MB. Free memory was 178.8 MB in the beginning and 166.4 MB in the end (delta: 12.4 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1389.98 ms. Allocated memory was 199.8 MB in the beginning and 223.3 MB in the end (delta: 23.6 MB). Free memory was 165.8 MB in the beginning and 191.8 MB in the end (delta: -26.0 MB). Peak memory consumption was 97.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: (a + b <= res + cnt && res < a + b + 1) && res + cnt <= a + b - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 20 locations, 1 error locations. SAFE Result, 1.3s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 28 SDtfs, 16 SDslu, 94 SDs, 0 SdLazy, 59 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 32 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.5s 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 10 PreInvPairs, 15 NumberOfFragments, 38 HoareAnnotationTreeSize, 10 FomulaSimplifications, 26 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 73 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 38 NumberOfCodeBlocks, 38 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 35 ConstructedInterpolants, 0 QuantifiedInterpolants, 1813 SizeOfPredicates, 3 NumberOfNonLiveVariables, 40 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 0/2 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...