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/gj2007b.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fea9116 [2019-09-20 12:58:27,720 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-20 12:58:27,722 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-20 12:58:27,734 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-20 12:58:27,734 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-20 12:58:27,735 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-20 12:58:27,736 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-20 12:58:27,738 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-20 12:58:27,740 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-20 12:58:27,741 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-20 12:58:27,742 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-20 12:58:27,743 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-20 12:58:27,743 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-20 12:58:27,744 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-20 12:58:27,745 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-20 12:58:27,747 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-20 12:58:27,747 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-20 12:58:27,749 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-20 12:58:27,750 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-20 12:58:27,752 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-20 12:58:27,754 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-20 12:58:27,755 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-20 12:58:27,756 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-20 12:58:27,757 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-20 12:58:27,759 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-20 12:58:27,762 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-20 12:58:27,763 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-20 12:58:27,763 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-20 12:58:27,764 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-20 12:58:27,765 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-20 12:58:27,766 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-20 12:58:27,766 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-20 12:58:27,767 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-20 12:58:27,767 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-20 12:58:27,768 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-20 12:58:27,769 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-20 12:58:27,769 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-09-20 12:58:27,790 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-20 12:58:27,791 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-20 12:58:27,793 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-20 12:58:27,794 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-20 12:58:27,794 INFO L138 SettingsManager]: * Use SBE=true [2019-09-20 12:58:27,796 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-20 12:58:27,796 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-20 12:58:27,797 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-20 12:58:27,797 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-20 12:58:27,797 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-20 12:58:27,797 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-20 12:58:27,797 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-20 12:58:27,798 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-20 12:58:27,798 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-20 12:58:27,798 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-20 12:58:27,798 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-20 12:58:27,798 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-20 12:58:27,799 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-20 12:58:27,799 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-20 12:58:27,800 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-20 12:58:27,801 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-20 12:58:27,801 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 12:58:27,802 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-20 12:58:27,802 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-20 12:58:27,803 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-20 12:58:27,803 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-20 12:58:27,803 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-20 12:58:27,803 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-20 12:58:27,804 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-20 12:58:27,855 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-20 12:58:27,870 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-20 12:58:27,875 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-20 12:58:27,877 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-20 12:58:27,877 INFO L275 PluginConnector]: CDTParser initialized [2019-09-20 12:58:27,878 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/gj2007b.i [2019-09-20 12:58:27,956 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f164fb08/64739924ffe6407c8670762a36659534/FLAG3c5ba03f0 [2019-09-20 12:58:28,445 INFO L306 CDTParser]: Found 1 translation units. [2019-09-20 12:58:28,447 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/gj2007b.i [2019-09-20 12:58:28,454 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f164fb08/64739924ffe6407c8670762a36659534/FLAG3c5ba03f0 [2019-09-20 12:58:28,795 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f164fb08/64739924ffe6407c8670762a36659534 [2019-09-20 12:58:28,807 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-20 12:58:28,809 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-20 12:58:28,810 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-20 12:58:28,810 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-20 12:58:28,814 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-20 12:58:28,815 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 12:58:28" (1/1) ... [2019-09-20 12:58:28,818 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d7101de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:58:28, skipping insertion in model container [2019-09-20 12:58:28,818 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 12:58:28" (1/1) ... [2019-09-20 12:58:28,826 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-20 12:58:28,843 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-20 12:58:28,998 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 12:58:29,002 INFO L188 MainTranslator]: Completed pre-run [2019-09-20 12:58:29,019 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 12:58:29,034 INFO L192 MainTranslator]: Completed translation [2019-09-20 12:58:29,034 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:58:29 WrapperNode [2019-09-20 12:58:29,034 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-20 12:58:29,035 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-20 12:58:29,035 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-20 12:58:29,036 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-20 12:58:29,135 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:58:29" (1/1) ... [2019-09-20 12:58:29,136 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:58:29" (1/1) ... [2019-09-20 12:58:29,141 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:58:29" (1/1) ... [2019-09-20 12:58:29,143 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:58:29" (1/1) ... [2019-09-20 12:58:29,147 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:58:29" (1/1) ... [2019-09-20 12:58:29,151 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:58:29" (1/1) ... [2019-09-20 12:58:29,152 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:58:29" (1/1) ... [2019-09-20 12:58:29,153 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-20 12:58:29,154 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-20 12:58:29,154 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-20 12:58:29,154 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-20 12:58:29,155 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:58:29" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 12:58:29,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-20 12:58:29,213 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-20 12:58:29,213 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-20 12:58:29,213 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-20 12:58:29,213 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-20 12:58:29,213 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-20 12:58:29,213 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-20 12:58:29,214 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-20 12:58:29,214 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-20 12:58:29,214 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-20 12:58:29,214 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-20 12:58:29,362 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-20 12:58:29,362 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-20 12:58:29,364 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 12:58:29 BoogieIcfgContainer [2019-09-20 12:58:29,364 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-20 12:58:29,365 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-20 12:58:29,365 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-20 12:58:29,367 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-20 12:58:29,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 12:58:28" (1/3) ... [2019-09-20 12:58:29,368 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ec2b23d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 12:58:29, skipping insertion in model container [2019-09-20 12:58:29,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:58:29" (2/3) ... [2019-09-20 12:58:29,369 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ec2b23d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 12:58:29, skipping insertion in model container [2019-09-20 12:58:29,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 12:58:29" (3/3) ... [2019-09-20 12:58:29,371 INFO L109 eAbstractionObserver]: Analyzing ICFG gj2007b.i [2019-09-20 12:58:29,381 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-20 12:58:29,388 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-20 12:58:29,404 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-20 12:58:29,431 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-20 12:58:29,432 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-20 12:58:29,432 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-20 12:58:29,432 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-20 12:58:29,432 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-20 12:58:29,432 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-20 12:58:29,433 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-20 12:58:29,433 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-20 12:58:29,433 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-20 12:58:29,447 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2019-09-20 12:58:29,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-09-20 12:58:29,452 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 12:58:29,453 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 12:58:29,455 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 12:58:29,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 12:58:29,460 INFO L82 PathProgramCache]: Analyzing trace with hash -2009018560, now seen corresponding path program 1 times [2019-09-20 12:58:29,462 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 12:58:29,462 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 12:58:29,513 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 12:58:29,513 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 12:58:29,513 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 12:58:29,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 12:58:29,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 12:58:29,567 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 12:58:29,567 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-20 12:58:29,570 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 12:58:29,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 12:58:29,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 12:58:29,583 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 2 states. [2019-09-20 12:58:29,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 12:58:29,607 INFO L93 Difference]: Finished difference Result 34 states and 41 transitions. [2019-09-20 12:58:29,608 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 12:58:29,609 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-09-20 12:58:29,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 12:58:29,618 INFO L225 Difference]: With dead ends: 34 [2019-09-20 12:58:29,619 INFO L226 Difference]: Without dead ends: 16 [2019-09-20 12:58:29,622 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 12:58:29,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-09-20 12:58:29,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-09-20 12:58:29,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-09-20 12:58:29,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2019-09-20 12:58:29,661 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 10 [2019-09-20 12:58:29,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 12:58:29,662 INFO L475 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2019-09-20 12:58:29,662 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 12:58:29,662 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2019-09-20 12:58:29,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-09-20 12:58:29,663 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 12:58:29,663 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 12:58:29,664 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 12:58:29,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 12:58:29,664 INFO L82 PathProgramCache]: Analyzing trace with hash -2019177291, now seen corresponding path program 1 times [2019-09-20 12:58:29,664 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 12:58:29,665 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 12:58:29,676 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 12:58:29,676 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 12:58:29,677 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 12:58:29,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 12:58:29,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 12:58:29,787 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 12:58:29,787 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-20 12:58:29,789 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-20 12:58:29,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-20 12:58:29,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-20 12:58:29,797 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 5 states. [2019-09-20 12:58:29,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 12:58:29,913 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2019-09-20 12:58:29,914 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-20 12:58:29,914 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2019-09-20 12:58:29,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 12:58:29,915 INFO L225 Difference]: With dead ends: 27 [2019-09-20 12:58:29,915 INFO L226 Difference]: Without dead ends: 25 [2019-09-20 12:58:29,916 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-20 12:58:29,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-09-20 12:58:29,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2019-09-20 12:58:29,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-09-20 12:58:29,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2019-09-20 12:58:29,925 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 10 [2019-09-20 12:58:29,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 12:58:29,926 INFO L475 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2019-09-20 12:58:29,926 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-20 12:58:29,926 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2019-09-20 12:58:29,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-09-20 12:58:29,927 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 12:58:29,927 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 12:58:29,928 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 12:58:29,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 12:58:29,928 INFO L82 PathProgramCache]: Analyzing trace with hash -1543015754, now seen corresponding path program 1 times [2019-09-20 12:58:29,929 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 12:58:29,929 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 12:58:29,930 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 12:58:29,930 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 12:58:29,931 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 12:58:29,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 12:58:30,006 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 12:58:30,006 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 12:58:30,006 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 [2019-09-20 12:58:30,034 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 12:58:30,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 12:58:30,060 INFO L256 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 8 conjunts are in the unsatisfiable core [2019-09-20 12:58:30,067 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 12:58:30,108 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-20 12:58:30,139 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 12:58:30,143 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-20 12:58:30,144 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2019-09-20 12:58:30,144 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-20 12:58:30,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-20 12:58:30,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-09-20 12:58:30,145 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand 8 states. [2019-09-20 12:58:30,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 12:58:30,237 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2019-09-20 12:58:30,237 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-20 12:58:30,237 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2019-09-20 12:58:30,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 12:58:30,240 INFO L225 Difference]: With dead ends: 30 [2019-09-20 12:58:30,240 INFO L226 Difference]: Without dead ends: 26 [2019-09-20 12:58:30,241 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2019-09-20 12:58:30,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-09-20 12:58:30,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 18. [2019-09-20 12:58:30,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-09-20 12:58:30,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2019-09-20 12:58:30,247 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 13 [2019-09-20 12:58:30,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 12:58:30,248 INFO L475 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2019-09-20 12:58:30,248 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-20 12:58:30,248 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2019-09-20 12:58:30,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-09-20 12:58:30,249 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 12:58:30,249 INFO L407 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 12:58:30,249 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 12:58:30,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 12:58:30,250 INFO L82 PathProgramCache]: Analyzing trace with hash -595645528, now seen corresponding path program 1 times [2019-09-20 12:58:30,250 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 12:58:30,250 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 12:58:30,251 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 12:58:30,251 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 12:58:30,251 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 12:58:30,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 12:58:30,321 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 12:58:30,321 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 12:58:30,321 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-20 12:58:30,322 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-20 12:58:30,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-20 12:58:30,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-20 12:58:30,324 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 6 states. [2019-09-20 12:58:30,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 12:58:30,440 INFO L93 Difference]: Finished difference Result 31 states and 33 transitions. [2019-09-20 12:58:30,440 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-20 12:58:30,440 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2019-09-20 12:58:30,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 12:58:30,441 INFO L225 Difference]: With dead ends: 31 [2019-09-20 12:58:30,442 INFO L226 Difference]: Without dead ends: 21 [2019-09-20 12:58:30,443 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-09-20 12:58:30,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-09-20 12:58:30,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2019-09-20 12:58:30,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-09-20 12:58:30,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2019-09-20 12:58:30,455 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 15 [2019-09-20 12:58:30,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 12:58:30,456 INFO L475 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2019-09-20 12:58:30,456 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-20 12:58:30,456 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2019-09-20 12:58:30,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-09-20 12:58:30,458 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 12:58:30,458 INFO L407 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 12:58:30,458 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 12:58:30,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 12:58:30,459 INFO L82 PathProgramCache]: Analyzing trace with hash -1695932857, now seen corresponding path program 1 times [2019-09-20 12:58:30,459 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 12:58:30,459 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 12:58:30,464 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 12:58:30,465 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 12:58:30,465 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 12:58:30,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 12:58:30,584 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 12:58:30,585 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 12:58:30,585 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-20 12:58:30,612 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 12:58:30,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 12:58:30,629 INFO L256 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 15 conjunts are in the unsatisfiable core [2019-09-20 12:58:30,631 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 12:58:30,716 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-20 12:58:30,781 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 12:58:30,784 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-20 12:58:30,784 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 13 [2019-09-20 12:58:30,785 INFO L454 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-09-20 12:58:30,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-09-20 12:58:30,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2019-09-20 12:58:30,787 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand 13 states. [2019-09-20 12:58:31,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 12:58:31,113 INFO L93 Difference]: Finished difference Result 36 states and 43 transitions. [2019-09-20 12:58:31,114 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-09-20 12:58:31,114 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 18 [2019-09-20 12:58:31,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 12:58:31,114 INFO L225 Difference]: With dead ends: 36 [2019-09-20 12:58:31,115 INFO L226 Difference]: Without dead ends: 0 [2019-09-20 12:58:31,116 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=115, Invalid=437, Unknown=0, NotChecked=0, Total=552 [2019-09-20 12:58:31,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-20 12:58:31,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-20 12:58:31,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-20 12:58:31,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-20 12:58:31,117 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2019-09-20 12:58:31,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 12:58:31,117 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-20 12:58:31,118 INFO L476 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-09-20 12:58:31,118 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-20 12:58:31,118 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-20 12:58:31,123 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-09-20 12:58:31,318 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2019-09-20 12:58:31,318 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-09-20 12:58:31,318 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-09-20 12:58:31,318 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-09-20 12:58:31,318 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-09-20 12:58:31,319 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-09-20 12:58:31,319 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 10 23) the Hoare annotation is: true [2019-09-20 12:58:31,319 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 10 23) no Hoare annotation was computed. [2019-09-20 12:58:31,319 INFO L443 ceAbstractionStarter]: For program point L21(line 21) no Hoare annotation was computed. [2019-09-20 12:58:31,319 INFO L439 ceAbstractionStarter]: At program point L20(line 20) the Hoare annotation is: (let ((.cse0 (<= 0 main_~m~0)) (.cse1 (<= 0 main_~x~0))) (or (and .cse0 (< main_~m~0 main_~n~0) .cse1) (and (<= main_~n~0 0) .cse0 (<= main_~x~0 0) .cse1) (and .cse0 (<= main_~m~0 0) .cse1))) [2019-09-20 12:58:31,320 INFO L443 ceAbstractionStarter]: For program point L15(lines 15 17) no Hoare annotation was computed. [2019-09-20 12:58:31,320 INFO L443 ceAbstractionStarter]: For program point L15-2(lines 15 17) no Hoare annotation was computed. [2019-09-20 12:58:31,320 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 10 23) no Hoare annotation was computed. [2019-09-20 12:58:31,320 INFO L439 ceAbstractionStarter]: At program point L14-2(lines 14 19) the Hoare annotation is: (let ((.cse0 (<= 0 main_~m~0)) (.cse1 (<= 0 main_~x~0))) (or (and .cse0 (< main_~m~0 main_~n~0) .cse1) (and .cse0 (<= main_~m~0 0) .cse1))) [2019-09-20 12:58:31,320 INFO L439 ceAbstractionStarter]: At program point L14-3(lines 14 19) the Hoare annotation is: (let ((.cse0 (<= 0 main_~m~0)) (.cse1 (<= 0 main_~x~0))) (or (and .cse0 (< main_~m~0 main_~n~0) .cse1) (and (<= main_~n~0 0) .cse0 (<= main_~x~0 0) .cse1) (and .cse0 (<= main_~m~0 0) .cse1))) [2019-09-20 12:58:31,321 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2019-09-20 12:58:31,321 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2019-09-20 12:58:31,321 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-09-20 12:58:31,321 INFO L443 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-09-20 12:58:31,321 INFO L443 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-09-20 12:58:31,321 INFO L443 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2019-09-20 12:58:31,336 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 12:58:31 BoogieIcfgContainer [2019-09-20 12:58:31,336 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-20 12:58:31,339 INFO L168 Benchmark]: Toolchain (without parser) took 2529.54 ms. Allocated memory was 138.9 MB in the beginning and 221.8 MB in the end (delta: 82.8 MB). Free memory was 86.8 MB in the beginning and 133.8 MB in the end (delta: -47.0 MB). Peak memory consumption was 35.8 MB. Max. memory is 7.1 GB. [2019-09-20 12:58:31,340 INFO L168 Benchmark]: CDTParser took 0.48 ms. Allocated memory is still 138.9 MB. Free memory was 104.9 MB in the beginning and 104.7 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-20 12:58:31,341 INFO L168 Benchmark]: CACSL2BoogieTranslator took 224.94 ms. Allocated memory is still 138.9 MB. Free memory was 86.6 MB in the beginning and 77.2 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2019-09-20 12:58:31,342 INFO L168 Benchmark]: Boogie Preprocessor took 118.37 ms. Allocated memory was 138.9 MB in the beginning and 199.2 MB in the end (delta: 60.3 MB). Free memory was 77.2 MB in the beginning and 177.2 MB in the end (delta: -100.0 MB). Peak memory consumption was 11.2 MB. Max. memory is 7.1 GB. [2019-09-20 12:58:31,343 INFO L168 Benchmark]: RCFGBuilder took 209.89 ms. Allocated memory is still 199.2 MB. Free memory was 177.2 MB in the beginning and 165.5 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 7.1 GB. [2019-09-20 12:58:31,344 INFO L168 Benchmark]: TraceAbstraction took 1971.65 ms. Allocated memory was 199.2 MB in the beginning and 221.8 MB in the end (delta: 22.5 MB). Free memory was 164.9 MB in the beginning and 133.8 MB in the end (delta: 31.0 MB). Peak memory consumption was 53.6 MB. Max. memory is 7.1 GB. [2019-09-20 12:58:31,348 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.48 ms. Allocated memory is still 138.9 MB. Free memory was 104.9 MB in the beginning and 104.7 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 224.94 ms. Allocated memory is still 138.9 MB. Free memory was 86.6 MB in the beginning and 77.2 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 118.37 ms. Allocated memory was 138.9 MB in the beginning and 199.2 MB in the end (delta: 60.3 MB). Free memory was 77.2 MB in the beginning and 177.2 MB in the end (delta: -100.0 MB). Peak memory consumption was 11.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 209.89 ms. Allocated memory is still 199.2 MB. Free memory was 177.2 MB in the beginning and 165.5 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1971.65 ms. Allocated memory was 199.2 MB in the beginning and 221.8 MB in the end (delta: 22.5 MB). Free memory was 164.9 MB in the beginning and 133.8 MB in the end (delta: 31.0 MB). Peak memory consumption was 53.6 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: ((0 <= m && m < n) && 0 <= x) || ((0 <= m && m <= 0) && 0 <= x) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 21 locations, 1 error locations. SAFE Result, 1.8s OverallTime, 5 OverallIterations, 2 TraceHistogramMax, 0.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 71 SDtfs, 68 SDslu, 207 SDs, 0 SdLazy, 188 SolverSat, 35 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 72 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=2, 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, 5 MinimizatonAttempts, 11 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 17 PreInvPairs, 28 NumberOfFragments, 94 HoareAnnotationTreeSize, 17 FomulaSimplifications, 254 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 42 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 97 NumberOfCodeBlocks, 97 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 90 ConstructedInterpolants, 0 QuantifiedInterpolants, 3036 SizeOfPredicates, 7 NumberOfNonLiveVariables, 81 ConjunctsInSsa, 23 ConjunctsInUnsatCore, 7 InterpolantComputations, 3 PerfectInterpolantSequences, 5/10 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...