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-acceleration/underapprox_2-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 19:15:23,690 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 19:15:23,692 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 19:15:23,704 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 19:15:23,704 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 19:15:23,705 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 19:15:23,707 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 19:15:23,708 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 19:15:23,710 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 19:15:23,711 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 19:15:23,712 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 19:15:23,713 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 19:15:23,713 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 19:15:23,714 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 19:15:23,715 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 19:15:23,716 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 19:15:23,717 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 19:15:23,718 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 19:15:23,719 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 19:15:23,721 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 19:15:23,722 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 19:15:23,723 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 19:15:23,724 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 19:15:23,725 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 19:15:23,727 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-13 19:15:23,730 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 19:15:23,730 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 19:15:23,731 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 19:15:23,732 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 19:15:23,733 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 19:15:23,733 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 19:15:23,734 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 19:15:23,734 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 19:15:23,734 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 19:15:23,735 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 19:15:23,736 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 19:15:23,736 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 [2019-10-13 19:15:23,752 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 19:15:23,753 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 19:15:23,754 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 19:15:23,754 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 19:15:23,754 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 19:15:23,754 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 19:15:23,754 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 19:15:23,755 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 19:15:23,755 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 19:15:23,755 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 19:15:23,755 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 19:15:23,755 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 19:15:23,756 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 19:15:23,756 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 19:15:23,756 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 19:15:23,756 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 19:15:23,757 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 19:15:23,757 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 19:15:23,757 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 19:15:23,757 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 19:15:23,757 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 19:15:23,758 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:15:23,758 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 19:15:23,758 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 19:15:23,758 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 19:15:23,758 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 19:15:23,759 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 19:15:23,759 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 19:15:23,759 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-13 19:15:24,035 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 19:15:24,050 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 19:15:24,054 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 19:15:24,055 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 19:15:24,055 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 19:15:24,056 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/underapprox_2-2.c [2019-10-13 19:15:24,118 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a773f138f/c98f89fbeac148c493477ed3d838ac2b/FLAGa171c9881 [2019-10-13 19:15:24,563 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 19:15:24,563 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/underapprox_2-2.c [2019-10-13 19:15:24,572 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a773f138f/c98f89fbeac148c493477ed3d838ac2b/FLAGa171c9881 [2019-10-13 19:15:24,990 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a773f138f/c98f89fbeac148c493477ed3d838ac2b [2019-10-13 19:15:25,000 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 19:15:25,001 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 19:15:25,002 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 19:15:25,002 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 19:15:25,006 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 19:15:25,006 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:15:24" (1/1) ... [2019-10-13 19:15:25,009 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@388d384c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:15:25, skipping insertion in model container [2019-10-13 19:15:25,009 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:15:24" (1/1) ... [2019-10-13 19:15:25,017 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 19:15:25,032 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 19:15:25,210 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:15:25,213 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 19:15:25,226 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:15:25,236 INFO L192 MainTranslator]: Completed translation [2019-10-13 19:15:25,237 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:15:25 WrapperNode [2019-10-13 19:15:25,237 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 19:15:25,238 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 19:15:25,238 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 19:15:25,238 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 19:15:25,323 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:15:25" (1/1) ... [2019-10-13 19:15:25,324 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:15:25" (1/1) ... [2019-10-13 19:15:25,329 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:15:25" (1/1) ... [2019-10-13 19:15:25,329 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:15:25" (1/1) ... [2019-10-13 19:15:25,333 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:15:25" (1/1) ... [2019-10-13 19:15:25,338 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:15:25" (1/1) ... [2019-10-13 19:15:25,339 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:15:25" (1/1) ... [2019-10-13 19:15:25,340 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 19:15:25,341 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 19:15:25,341 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 19:15:25,341 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 19:15:25,342 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:15:25" (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 [2019-10-13 19:15:25,394 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 19:15:25,394 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 19:15:25,394 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-13 19:15:25,395 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 19:15:25,395 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 19:15:25,395 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-13 19:15:25,395 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 19:15:25,395 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 19:15:25,395 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 19:15:25,542 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 19:15:25,542 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-13 19:15:25,543 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:15:25 BoogieIcfgContainer [2019-10-13 19:15:25,543 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 19:15:25,544 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 19:15:25,545 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 19:15:25,547 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 19:15:25,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:15:24" (1/3) ... [2019-10-13 19:15:25,549 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@558fd016 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:15:25, skipping insertion in model container [2019-10-13 19:15:25,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:15:25" (2/3) ... [2019-10-13 19:15:25,549 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@558fd016 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:15:25, skipping insertion in model container [2019-10-13 19:15:25,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:15:25" (3/3) ... [2019-10-13 19:15:25,551 INFO L109 eAbstractionObserver]: Analyzing ICFG underapprox_2-2.c [2019-10-13 19:15:25,559 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 19:15:25,566 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 19:15:25,577 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 19:15:25,599 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 19:15:25,599 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 19:15:25,600 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 19:15:25,600 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 19:15:25,600 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 19:15:25,600 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 19:15:25,600 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 19:15:25,600 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 19:15:25,616 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2019-10-13 19:15:25,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-13 19:15:25,621 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:15:25,622 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:15:25,623 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:15:25,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:15:25,628 INFO L82 PathProgramCache]: Analyzing trace with hash 1846144830, now seen corresponding path program 1 times [2019-10-13 19:15:25,636 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:15:25,636 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999153204] [2019-10-13 19:15:25,636 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:15:25,637 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:15:25,637 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:15:25,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:15:25,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:15:25,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:15:25,853 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999153204] [2019-10-13 19:15:25,854 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:15:25,855 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 19:15:25,855 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456517440] [2019-10-13 19:15:25,861 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 19:15:25,861 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:15:25,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 19:15:25,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 19:15:25,882 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 3 states. [2019-10-13 19:15:25,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:15:25,914 INFO L93 Difference]: Finished difference Result 29 states and 34 transitions. [2019-10-13 19:15:25,914 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 19:15:25,916 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2019-10-13 19:15:25,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:15:25,929 INFO L225 Difference]: With dead ends: 29 [2019-10-13 19:15:25,929 INFO L226 Difference]: Without dead ends: 12 [2019-10-13 19:15:25,935 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 19:15:25,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-10-13 19:15:25,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-10-13 19:15:25,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-10-13 19:15:25,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2019-10-13 19:15:25,980 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2019-10-13 19:15:25,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:15:25,980 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2019-10-13 19:15:25,980 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 19:15:25,981 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2019-10-13 19:15:25,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-13 19:15:25,983 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:15:25,983 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:15:25,983 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:15:25,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:15:25,985 INFO L82 PathProgramCache]: Analyzing trace with hash 1432376145, now seen corresponding path program 1 times [2019-10-13 19:15:25,985 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:15:25,986 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072889160] [2019-10-13 19:15:25,986 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:15:25,986 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:15:25,986 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:15:26,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:15:26,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:15:26,138 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:15:26,138 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072889160] [2019-10-13 19:15:26,139 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [758989782] [2019-10-13 19:15:26,139 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2019-10-13 19:15:26,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:15:26,177 INFO L256 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-13 19:15:26,183 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:15:26,216 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:15:26,216 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-13 19:15:26,217 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2019-10-13 19:15:26,217 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240614800] [2019-10-13 19:15:26,219 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 19:15:26,219 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:15:26,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 19:15:26,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-13 19:15:26,220 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 5 states. [2019-10-13 19:15:26,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:15:26,241 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2019-10-13 19:15:26,242 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 19:15:26,243 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2019-10-13 19:15:26,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:15:26,244 INFO L225 Difference]: With dead ends: 18 [2019-10-13 19:15:26,244 INFO L226 Difference]: Without dead ends: 13 [2019-10-13 19:15:26,245 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 3 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-13 19:15:26,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-10-13 19:15:26,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2019-10-13 19:15:26,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-10-13 19:15:26,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2019-10-13 19:15:26,250 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2019-10-13 19:15:26,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:15:26,250 INFO L462 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2019-10-13 19:15:26,250 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 19:15:26,251 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2019-10-13 19:15:26,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-10-13 19:15:26,251 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:15:26,252 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:15:26,461 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:15:26,461 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:15:26,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:15:26,463 INFO L82 PathProgramCache]: Analyzing trace with hash 1490448798, now seen corresponding path program 2 times [2019-10-13 19:15:26,463 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:15:26,463 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827297085] [2019-10-13 19:15:26,463 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:15:26,464 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:15:26,464 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:15:26,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:15:26,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:15:26,598 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:15:26,598 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827297085] [2019-10-13 19:15:26,598 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1631603469] [2019-10-13 19:15:26,599 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:15:26,636 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-10-13 19:15:26,637 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 19:15:26,638 INFO L256 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 13 conjunts are in the unsatisfiable core [2019-10-13 19:15:26,640 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:15:26,664 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:15:26,664 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-13 19:15:26,664 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2019-10-13 19:15:26,664 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010447581] [2019-10-13 19:15:26,665 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 19:15:26,667 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:15:26,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 19:15:26,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-13 19:15:26,669 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 6 states. [2019-10-13 19:15:26,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:15:26,700 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2019-10-13 19:15:26,701 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:15:26,701 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2019-10-13 19:15:26,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:15:26,702 INFO L225 Difference]: With dead ends: 19 [2019-10-13 19:15:26,702 INFO L226 Difference]: Without dead ends: 14 [2019-10-13 19:15:26,702 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-13 19:15:26,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-10-13 19:15:26,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2019-10-13 19:15:26,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-10-13 19:15:26,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2019-10-13 19:15:26,710 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2019-10-13 19:15:26,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:15:26,711 INFO L462 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2019-10-13 19:15:26,711 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 19:15:26,711 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2019-10-13 19:15:26,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-10-13 19:15:26,712 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:15:26,712 INFO L380 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:15:26,917 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:15:26,917 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:15:26,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:15:26,917 INFO L82 PathProgramCache]: Analyzing trace with hash -1004266255, now seen corresponding path program 3 times [2019-10-13 19:15:26,918 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:15:26,918 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737324956] [2019-10-13 19:15:26,918 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:15:26,918 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:15:26,918 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:15:26,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:15:27,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:15:27,048 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:15:27,048 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737324956] [2019-10-13 19:15:27,049 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [590088375] [2019-10-13 19:15:27,049 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2019-10-13 19:15:27,081 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-10-13 19:15:27,081 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:15:27,082 INFO L256 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 10 conjunts are in the unsatisfiable core [2019-10-13 19:15:27,084 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:15:27,137 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 19:15:27,171 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 19:15:27,172 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:15:27,172 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2019-10-13 19:15:27,173 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998391585] [2019-10-13 19:15:27,173 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 19:15:27,173 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:15:27,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 19:15:27,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-10-13 19:15:27,174 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 6 states. [2019-10-13 19:15:27,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:15:27,213 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2019-10-13 19:15:27,213 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-13 19:15:27,214 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2019-10-13 19:15:27,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:15:27,214 INFO L225 Difference]: With dead ends: 14 [2019-10-13 19:15:27,214 INFO L226 Difference]: Without dead ends: 0 [2019-10-13 19:15:27,215 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2019-10-13 19:15:27,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-13 19:15:27,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-13 19:15:27,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-13 19:15:27,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-13 19:15:27,217 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2019-10-13 19:15:27,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:15:27,217 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-13 19:15:27,217 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 19:15:27,218 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-13 19:15:27,218 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-13 19:15:27,423 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:15:27,429 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-13 19:15:27,489 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2019-10-13 19:15:27,489 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-13 19:15:27,489 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-13 19:15:27,489 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-10-13 19:15:27,490 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-13 19:15:27,490 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-13 19:15:27,490 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 10 20) the Hoare annotation is: true [2019-10-13 19:15:27,490 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 10 20) no Hoare annotation was computed. [2019-10-13 19:15:27,490 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 10 20) no Hoare annotation was computed. [2019-10-13 19:15:27,490 INFO L439 ceAbstractionStarter]: At program point L14-2(lines 14 17) the Hoare annotation is: (or (and (<= main_~x~0 0) (<= 0 main_~x~0)) (< (mod (+ main_~x~0 4294967295) 4294967296) 6)) [2019-10-13 19:15:27,490 INFO L439 ceAbstractionStarter]: At program point L14-3(lines 14 17) the Hoare annotation is: (and (< (mod (+ main_~x~0 4294967295) 4294967296) 6) (<= 6 (mod main_~x~0 4294967296))) [2019-10-13 19:15:27,490 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2019-10-13 19:15:27,491 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2019-10-13 19:15:27,491 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-10-13 19:15:27,491 INFO L443 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-10-13 19:15:27,491 INFO L443 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-10-13 19:15:27,491 INFO L443 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2019-10-13 19:15:27,504 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:15:27 BoogieIcfgContainer [2019-10-13 19:15:27,504 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-13 19:15:27,507 INFO L168 Benchmark]: Toolchain (without parser) took 2505.04 ms. Allocated memory was 137.9 MB in the beginning and 233.3 MB in the end (delta: 95.4 MB). Free memory was 102.5 MB in the beginning and 201.3 MB in the end (delta: -98.8 MB). Peak memory consumption was 85.5 MB. Max. memory is 7.1 GB. [2019-10-13 19:15:27,508 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 137.9 MB. Free memory was 121.1 MB in the beginning and 120.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-13 19:15:27,509 INFO L168 Benchmark]: CACSL2BoogieTranslator took 235.35 ms. Allocated memory is still 137.9 MB. Free memory was 102.3 MB in the beginning and 93.0 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2019-10-13 19:15:27,510 INFO L168 Benchmark]: Boogie Preprocessor took 102.00 ms. Allocated memory was 137.9 MB in the beginning and 200.8 MB in the end (delta: 62.9 MB). Free memory was 93.0 MB in the beginning and 179.5 MB in the end (delta: -86.5 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. [2019-10-13 19:15:27,511 INFO L168 Benchmark]: RCFGBuilder took 202.78 ms. Allocated memory is still 200.8 MB. Free memory was 179.5 MB in the beginning and 168.7 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. [2019-10-13 19:15:27,512 INFO L168 Benchmark]: TraceAbstraction took 1960.09 ms. Allocated memory was 200.8 MB in the beginning and 233.3 MB in the end (delta: 32.5 MB). Free memory was 168.7 MB in the beginning and 201.3 MB in the end (delta: -32.6 MB). Peak memory consumption was 88.8 MB. Max. memory is 7.1 GB. [2019-10-13 19:15:27,516 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 137.9 MB. Free memory was 121.1 MB in the beginning and 120.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 235.35 ms. Allocated memory is still 137.9 MB. Free memory was 102.3 MB in the beginning and 93.0 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 102.00 ms. Allocated memory was 137.9 MB in the beginning and 200.8 MB in the end (delta: 62.9 MB). Free memory was 93.0 MB in the beginning and 179.5 MB in the end (delta: -86.5 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 202.78 ms. Allocated memory is still 200.8 MB. Free memory was 179.5 MB in the beginning and 168.7 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1960.09 ms. Allocated memory was 200.8 MB in the beginning and 233.3 MB in the end (delta: 32.5 MB). Free memory was 168.7 MB in the beginning and 201.3 MB in the end (delta: -32.6 MB). Peak memory consumption was 88.8 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: 14]: Loop Invariant Derived loop invariant: (x <= 0 && 0 <= x) || (x + 4294967295) % 4294967296 < 6 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 17 locations, 1 error locations. Result: SAFE, OverallTime: 1.8s, OverallIterations: 4, TraceHistogramMax: 3, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 43 SDtfs, 2 SDslu, 77 SDs, 0 SdLazy, 39 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 64 GetRequests, 39 SyntacticMatches, 8 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 10 PreInvPairs, 14 NumberOfFragments, 33 HoareAnnotationTreeSize, 10 FomulaSimplifications, 28 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 82 NumberOfCodeBlocks, 81 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 75 ConstructedInterpolants, 0 QuantifiedInterpolants, 2185 SizeOfPredicates, 2 NumberOfNonLiveVariables, 97 ConjunctsInSsa, 34 ConjunctsInUnsatCore, 7 InterpolantComputations, 2 PerfectInterpolantSequences, 6/20 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...