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/cggmp2005b.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-673a906-m [2019-10-02 11:18:47,196 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-02 11:18:47,198 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-02 11:18:47,214 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-02 11:18:47,214 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-02 11:18:47,216 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-02 11:18:47,218 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-02 11:18:47,226 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-02 11:18:47,228 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-02 11:18:47,231 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-02 11:18:47,232 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-02 11:18:47,233 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-02 11:18:47,233 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-02 11:18:47,234 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-02 11:18:47,235 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-02 11:18:47,236 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-02 11:18:47,237 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-02 11:18:47,238 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-02 11:18:47,239 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-02 11:18:47,241 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-02 11:18:47,243 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-02 11:18:47,244 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-02 11:18:47,245 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-02 11:18:47,246 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-02 11:18:47,248 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-02 11:18:47,251 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-02 11:18:47,252 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-02 11:18:47,252 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-02 11:18:47,253 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-02 11:18:47,254 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-02 11:18:47,254 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-02 11:18:47,255 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-02 11:18:47,255 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-02 11:18:47,255 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-02 11:18:47,256 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-02 11:18:47,257 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-02 11:18:47,258 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-02 11:18:47,272 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-02 11:18:47,273 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-02 11:18:47,274 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-02 11:18:47,274 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-02 11:18:47,274 INFO L138 SettingsManager]: * Use SBE=true [2019-10-02 11:18:47,274 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-02 11:18:47,275 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-02 11:18:47,275 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-02 11:18:47,275 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-02 11:18:47,275 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-02 11:18:47,275 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-02 11:18:47,276 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-02 11:18:47,276 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-02 11:18:47,276 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-02 11:18:47,276 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-02 11:18:47,276 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-02 11:18:47,277 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-02 11:18:47,277 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-02 11:18:47,277 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-02 11:18:47,277 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-02 11:18:47,277 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-02 11:18:47,278 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-02 11:18:47,278 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-02 11:18:47,278 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-02 11:18:47,278 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-02 11:18:47,278 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-02 11:18:47,279 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-02 11:18:47,279 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-02 11:18:47,279 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-02 11:18:47,317 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-02 11:18:47,330 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-02 11:18:47,335 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-02 11:18:47,337 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-02 11:18:47,337 INFO L275 PluginConnector]: CDTParser initialized [2019-10-02 11:18:47,338 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/cggmp2005b.i [2019-10-02 11:18:47,404 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c018ef317/df6cd1d0fa2e4ed1a78fdf0ea902b23b/FLAGbd144c9f9 [2019-10-02 11:18:47,909 INFO L306 CDTParser]: Found 1 translation units. [2019-10-02 11:18:47,909 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/cggmp2005b.i [2019-10-02 11:18:47,916 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c018ef317/df6cd1d0fa2e4ed1a78fdf0ea902b23b/FLAGbd144c9f9 [2019-10-02 11:18:48,319 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c018ef317/df6cd1d0fa2e4ed1a78fdf0ea902b23b [2019-10-02 11:18:48,330 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-02 11:18:48,331 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-02 11:18:48,332 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-02 11:18:48,332 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-02 11:18:48,335 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-02 11:18:48,336 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 11:18:48" (1/1) ... [2019-10-02 11:18:48,338 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4607075f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:18:48, skipping insertion in model container [2019-10-02 11:18:48,339 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 11:18:48" (1/1) ... [2019-10-02 11:18:48,346 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-02 11:18:48,360 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-02 11:18:48,515 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 11:18:48,524 INFO L188 MainTranslator]: Completed pre-run [2019-10-02 11:18:48,547 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 11:18:48,563 INFO L192 MainTranslator]: Completed translation [2019-10-02 11:18:48,564 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:18:48 WrapperNode [2019-10-02 11:18:48,564 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-02 11:18:48,565 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-02 11:18:48,565 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-02 11:18:48,565 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-02 11:18:48,669 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:18:48" (1/1) ... [2019-10-02 11:18:48,670 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:18:48" (1/1) ... [2019-10-02 11:18:48,677 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:18:48" (1/1) ... [2019-10-02 11:18:48,679 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:18:48" (1/1) ... [2019-10-02 11:18:48,683 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:18:48" (1/1) ... [2019-10-02 11:18:48,692 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:18:48" (1/1) ... [2019-10-02 11:18:48,693 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:18:48" (1/1) ... [2019-10-02 11:18:48,700 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-02 11:18:48,701 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-02 11:18:48,701 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-02 11:18:48,701 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-02 11:18:48,702 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:18:48" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-02 11:18:48,767 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-02 11:18:48,767 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-02 11:18:48,767 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-02 11:18:48,768 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-02 11:18:48,768 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-02 11:18:48,768 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-02 11:18:48,768 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-02 11:18:48,768 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-02 11:18:48,768 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-02 11:18:48,769 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-02 11:18:48,769 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-02 11:18:48,934 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-02 11:18:48,935 INFO L283 CfgBuilder]: Removed 3 assume(true) statements. [2019-10-02 11:18:48,936 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 11:18:48 BoogieIcfgContainer [2019-10-02 11:18:48,936 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-02 11:18:48,937 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-02 11:18:48,938 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-02 11:18:48,941 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-02 11:18:48,941 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.10 11:18:48" (1/3) ... [2019-10-02 11:18:48,942 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7745b188 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 11:18:48, skipping insertion in model container [2019-10-02 11:18:48,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:18:48" (2/3) ... [2019-10-02 11:18:48,943 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7745b188 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 11:18:48, skipping insertion in model container [2019-10-02 11:18:48,943 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 11:18:48" (3/3) ... [2019-10-02 11:18:48,945 INFO L109 eAbstractionObserver]: Analyzing ICFG cggmp2005b.i [2019-10-02 11:18:48,955 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-02 11:18:48,962 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-02 11:18:48,980 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-02 11:18:49,008 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-10-02 11:18:49,009 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-10-02 11:18:49,009 INFO L378 AbstractCegarLoop]: Hoare is true [2019-10-02 11:18:49,010 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-02 11:18:49,010 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-02 11:18:49,010 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-02 11:18:49,010 INFO L382 AbstractCegarLoop]: Difference is false [2019-10-02 11:18:49,010 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-02 11:18:49,010 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-02 11:18:49,026 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2019-10-02 11:18:49,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-02 11:18:49,030 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 11:18:49,031 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 11:18:49,033 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 11:18:49,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 11:18:49,039 INFO L82 PathProgramCache]: Analyzing trace with hash 728031169, now seen corresponding path program 1 times [2019-10-02 11:18:49,041 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 11:18:49,041 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 11:18:49,084 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 11:18:49,085 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 11:18:49,085 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 11:18:49,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 11:18:49,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 11:18:49,145 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 11:18:49,145 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-02 11:18:49,149 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-02 11:18:49,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-02 11:18:49,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-02 11:18:49,162 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 2 states. [2019-10-02 11:18:49,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 11:18:49,190 INFO L93 Difference]: Finished difference Result 37 states and 50 transitions. [2019-10-02 11:18:49,190 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-02 11:18:49,191 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-10-02 11:18:49,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 11:18:49,201 INFO L225 Difference]: With dead ends: 37 [2019-10-02 11:18:49,201 INFO L226 Difference]: Without dead ends: 14 [2019-10-02 11:18:49,209 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-02 11:18:49,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-10-02 11:18:49,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2019-10-02 11:18:49,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-10-02 11:18:49,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2019-10-02 11:18:49,255 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 10 [2019-10-02 11:18:49,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 11:18:49,256 INFO L475 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2019-10-02 11:18:49,257 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-02 11:18:49,257 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2019-10-02 11:18:49,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-02 11:18:49,259 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 11:18:49,259 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 11:18:49,260 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 11:18:49,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 11:18:49,262 INFO L82 PathProgramCache]: Analyzing trace with hash 701249060, now seen corresponding path program 1 times [2019-10-02 11:18:49,263 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 11:18:49,263 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 11:18:49,265 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 11:18:49,266 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 11:18:49,267 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 11:18:49,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 11:18:49,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 11:18:49,331 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 11:18:49,332 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-02 11:18:49,333 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-02 11:18:49,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-02 11:18:49,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 11:18:49,334 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand 3 states. [2019-10-02 11:18:49,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 11:18:49,353 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2019-10-02 11:18:49,353 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-02 11:18:49,353 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2019-10-02 11:18:49,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 11:18:49,354 INFO L225 Difference]: With dead ends: 20 [2019-10-02 11:18:49,355 INFO L226 Difference]: Without dead ends: 15 [2019-10-02 11:18:49,356 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 11:18:49,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-10-02 11:18:49,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2019-10-02 11:18:49,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-10-02 11:18:49,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2019-10-02 11:18:49,362 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 10 [2019-10-02 11:18:49,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 11:18:49,362 INFO L475 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2019-10-02 11:18:49,362 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-02 11:18:49,363 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2019-10-02 11:18:49,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-10-02 11:18:49,363 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 11:18:49,363 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 11:18:49,364 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 11:18:49,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 11:18:49,364 INFO L82 PathProgramCache]: Analyzing trace with hash 1130211510, now seen corresponding path program 1 times [2019-10-02 11:18:49,364 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 11:18:49,364 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 11:18:49,366 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 11:18:49,366 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 11:18:49,366 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 11:18:49,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 11:18:49,394 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 11:18:49,395 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 11:18:49,395 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-02 11:18:49,395 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-02 11:18:49,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-02 11:18:49,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 11:18:49,396 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand 3 states. [2019-10-02 11:18:49,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 11:18:49,427 INFO L93 Difference]: Finished difference Result 25 states and 30 transitions. [2019-10-02 11:18:49,428 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-02 11:18:49,428 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2019-10-02 11:18:49,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 11:18:49,429 INFO L225 Difference]: With dead ends: 25 [2019-10-02 11:18:49,429 INFO L226 Difference]: Without dead ends: 16 [2019-10-02 11:18:49,430 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 11:18:49,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-10-02 11:18:49,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-10-02 11:18:49,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-10-02 11:18:49,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2019-10-02 11:18:49,437 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 14 [2019-10-02 11:18:49,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 11:18:49,437 INFO L475 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2019-10-02 11:18:49,438 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-02 11:18:49,438 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2019-10-02 11:18:49,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-10-02 11:18:49,439 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 11:18:49,443 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 11:18:49,444 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 11:18:49,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 11:18:49,444 INFO L82 PathProgramCache]: Analyzing trace with hash -1842576314, now seen corresponding path program 1 times [2019-10-02 11:18:49,445 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 11:18:49,445 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 11:18:49,449 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 11:18:49,450 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 11:18:49,450 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 11:18:49,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 11:18:49,506 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-02 11:18:49,507 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 11:18:49,507 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-10-02 11:18:49,534 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 11:18:49,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 11:18:49,559 INFO L256 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-02 11:18:49,564 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-02 11:18:49,591 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (2)] Exception during sending of exit command (exit): Stream closed [2019-10-02 11:18:49,604 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-02 11:18:49,604 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2019-10-02 11:18:49,605 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-02 11:18:49,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-02 11:18:49,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-02 11:18:49,606 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 4 states. [2019-10-02 11:18:49,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 11:18:49,641 INFO L93 Difference]: Finished difference Result 25 states and 29 transitions. [2019-10-02 11:18:49,641 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-02 11:18:49,641 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2019-10-02 11:18:49,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 11:18:49,643 INFO L225 Difference]: With dead ends: 25 [2019-10-02 11:18:49,643 INFO L226 Difference]: Without dead ends: 20 [2019-10-02 11:18:49,644 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-02 11:18:49,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-10-02 11:18:49,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2019-10-02 11:18:49,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-10-02 11:18:49,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2019-10-02 11:18:49,651 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 15 [2019-10-02 11:18:49,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 11:18:49,652 INFO L475 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2019-10-02 11:18:49,652 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-02 11:18:49,652 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2019-10-02 11:18:49,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-10-02 11:18:49,653 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 11:18:49,653 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 11:18:49,654 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 11:18:49,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 11:18:49,654 INFO L82 PathProgramCache]: Analyzing trace with hash -926542376, now seen corresponding path program 2 times [2019-10-02 11:18:49,654 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 11:18:49,655 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 11:18:49,656 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 11:18:49,656 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 11:18:49,657 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 11:18:49,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 11:18:49,744 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 11:18:49,744 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 11:18:49,744 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 [2019-10-02 11:18:49,761 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-10-02 11:18:49,780 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-10-02 11:18:49,781 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-02 11:18:49,782 INFO L256 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-02 11:18:49,784 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-02 11:18:49,847 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-02 11:18:49,851 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-02 11:18:49,851 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2019-10-02 11:18:49,851 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-02 11:18:49,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-02 11:18:49,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-10-02 11:18:49,854 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand 7 states. [2019-10-02 11:18:49,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 11:18:49,942 INFO L93 Difference]: Finished difference Result 33 states and 41 transitions. [2019-10-02 11:18:49,943 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-02 11:18:49,944 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2019-10-02 11:18:49,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 11:18:49,945 INFO L225 Difference]: With dead ends: 33 [2019-10-02 11:18:49,945 INFO L226 Difference]: Without dead ends: 21 [2019-10-02 11:18:49,946 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-10-02 11:18:49,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-10-02 11:18:49,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2019-10-02 11:18:49,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-10-02 11:18:49,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2019-10-02 11:18:49,961 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 19 [2019-10-02 11:18:49,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 11:18:49,962 INFO L475 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2019-10-02 11:18:49,962 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-02 11:18:49,962 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2019-10-02 11:18:49,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-10-02 11:18:49,964 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 11:18:49,964 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 11:18:49,964 INFO L418 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 11:18:49,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 11:18:49,965 INFO L82 PathProgramCache]: Analyzing trace with hash 901903432, now seen corresponding path program 3 times [2019-10-02 11:18:49,965 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 11:18:49,966 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 11:18:49,969 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 11:18:49,969 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-10-02 11:18:49,969 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 11:18:49,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 11:18:50,050 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-10-02 11:18:50,050 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 11:18:50,051 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-02 11:18:50,051 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-02 11:18:50,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-02 11:18:50,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-02 11:18:50,052 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand 5 states. [2019-10-02 11:18:50,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 11:18:50,082 INFO L93 Difference]: Finished difference Result 30 states and 38 transitions. [2019-10-02 11:18:50,082 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-02 11:18:50,082 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2019-10-02 11:18:50,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 11:18:50,083 INFO L225 Difference]: With dead ends: 30 [2019-10-02 11:18:50,083 INFO L226 Difference]: Without dead ends: 0 [2019-10-02 11:18:50,084 INFO L640 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 [2019-10-02 11:18:50,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-02 11:18:50,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-02 11:18:50,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-02 11:18:50,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-02 11:18:50,085 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2019-10-02 11:18:50,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 11:18:50,086 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-02 11:18:50,086 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-02 11:18:50,086 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-02 11:18:50,086 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-02 11:18:50,091 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-02 11:18:50,159 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2019-10-02 11:18:50,159 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-02 11:18:50,159 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-02 11:18:50,159 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-10-02 11:18:50,160 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-02 11:18:50,160 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-02 11:18:50,160 INFO L443 ceAbstractionStarter]: For program point L25(line 25) no Hoare annotation was computed. [2019-10-02 11:18:50,160 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 10 27) no Hoare annotation was computed. [2019-10-02 11:18:50,160 INFO L439 ceAbstractionStarter]: At program point L21-2(lines 21 23) the Hoare annotation is: (= main_~k~0 4) [2019-10-02 11:18:50,161 INFO L439 ceAbstractionStarter]: At program point L21-3(lines 15 24) the Hoare annotation is: (or (= main_~k~0 4) (and (<= (+ main_~j~0 100) main_~i~0) (<= main_~i~0 0))) [2019-10-02 11:18:50,161 INFO L439 ceAbstractionStarter]: At program point L17-2(lines 17 19) the Hoare annotation is: (or (= main_~k~0 4) (<= main_~i~0 1)) [2019-10-02 11:18:50,161 INFO L443 ceAbstractionStarter]: For program point L17-3(lines 17 19) no Hoare annotation was computed. [2019-10-02 11:18:50,161 INFO L439 ceAbstractionStarter]: At program point L15-2(lines 15 24) the Hoare annotation is: (= main_~k~0 4) [2019-10-02 11:18:50,161 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 10 27) no Hoare annotation was computed. [2019-10-02 11:18:50,162 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 10 27) the Hoare annotation is: true [2019-10-02 11:18:50,162 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2019-10-02 11:18:50,162 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-10-02 11:18:50,162 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2019-10-02 11:18:50,162 INFO L443 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-10-02 11:18:50,163 INFO L443 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-10-02 11:18:50,163 INFO L443 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2019-10-02 11:18:50,179 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.10 11:18:50 BoogieIcfgContainer [2019-10-02 11:18:50,179 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-02 11:18:50,182 INFO L168 Benchmark]: Toolchain (without parser) took 1849.68 ms. Allocated memory was 141.6 MB in the beginning and 200.8 MB in the end (delta: 59.2 MB). Free memory was 89.1 MB in the beginning and 93.2 MB in the end (delta: -4.1 MB). Peak memory consumption was 55.2 MB. Max. memory is 7.1 GB. [2019-10-02 11:18:50,184 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 141.6 MB. Free memory was 107.6 MB in the beginning and 107.4 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-10-02 11:18:50,185 INFO L168 Benchmark]: CACSL2BoogieTranslator took 232.16 ms. Allocated memory is still 141.6 MB. Free memory was 88.9 MB in the beginning and 79.6 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2019-10-02 11:18:50,186 INFO L168 Benchmark]: Boogie Preprocessor took 136.07 ms. Allocated memory was 141.6 MB in the beginning and 200.8 MB in the end (delta: 59.2 MB). Free memory was 79.6 MB in the beginning and 178.4 MB in the end (delta: -98.8 MB). Peak memory consumption was 11.4 MB. Max. memory is 7.1 GB. [2019-10-02 11:18:50,187 INFO L168 Benchmark]: RCFGBuilder took 235.27 ms. Allocated memory is still 200.8 MB. Free memory was 178.4 MB in the beginning and 166.6 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 7.1 GB. [2019-10-02 11:18:50,188 INFO L168 Benchmark]: TraceAbstraction took 1241.90 ms. Allocated memory is still 200.8 MB. Free memory was 166.6 MB in the beginning and 93.2 MB in the end (delta: 73.4 MB). Peak memory consumption was 73.4 MB. Max. memory is 7.1 GB. [2019-10-02 11:18:50,192 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 141.6 MB. Free memory was 107.6 MB in the beginning and 107.4 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 232.16 ms. Allocated memory is still 141.6 MB. Free memory was 88.9 MB in the beginning and 79.6 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 136.07 ms. Allocated memory was 141.6 MB in the beginning and 200.8 MB in the end (delta: 59.2 MB). Free memory was 79.6 MB in the beginning and 178.4 MB in the end (delta: -98.8 MB). Peak memory consumption was 11.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 235.27 ms. Allocated memory is still 200.8 MB. Free memory was 178.4 MB in the beginning and 166.6 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1241.90 ms. Allocated memory is still 200.8 MB. Free memory was 166.6 MB in the beginning and 93.2 MB in the end (delta: 73.4 MB). Peak memory consumption was 73.4 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: 15]: Loop Invariant Derived loop invariant: k == 4 || (j + 100 <= i && i <= 0) - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: k == 4 - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: k == 4 || i <= 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 21 locations, 1 error locations. SAFE Result, 1.1s OverallTime, 6 OverallIterations, 2 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 96 SDtfs, 5 SDslu, 135 SDs, 0 SdLazy, 35 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 57 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 15 PreInvPairs, 25 NumberOfFragments, 31 HoareAnnotationTreeSize, 15 FomulaSimplifications, 44 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 8 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 122 NumberOfCodeBlocks, 122 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 114 ConstructedInterpolants, 0 QuantifiedInterpolants, 2994 SizeOfPredicates, 3 NumberOfNonLiveVariables, 79 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 8 InterpolantComputations, 4 PerfectInterpolantSequences, 27/32 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...