java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-acceleration/underapprox_true-unreach-call2_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 11:54:41,583 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 11:54:41,587 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 11:54:41,599 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 11:54:41,599 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 11:54:41,601 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 11:54:41,602 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 11:54:41,605 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 11:54:41,606 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 11:54:41,607 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 11:54:41,608 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 11:54:41,608 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 11:54:41,609 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 11:54:41,610 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 11:54:41,612 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 11:54:41,612 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 11:54:41,613 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 11:54:41,615 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 11:54:41,617 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 11:54:41,619 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 11:54:41,620 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 11:54:41,621 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 11:54:41,623 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 11:54:41,637 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-24 11:54:41,663 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 11:54:41,663 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 11:54:41,664 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 11:54:41,664 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 11:54:41,665 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 11:54:41,665 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 11:54:41,665 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 11:54:41,666 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 11:54:41,666 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 11:54:41,666 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 11:54:41,666 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 11:54:41,666 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 11:54:41,667 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 11:54:41,667 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 11:54:41,667 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 11:54:41,667 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 11:54:41,667 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 11:54:41,668 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 11:54:41,668 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 11:54:41,669 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 11:54:41,669 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 11:54:41,669 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 11:54:41,669 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 11:54:41,669 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 11:54:41,670 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 11:54:41,670 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 11:54:41,670 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 11:54:41,670 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 11:54:41,726 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 11:54:41,741 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 11:54:41,745 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 11:54:41,747 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 11:54:41,747 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 11:54:41,748 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/loop-acceleration/underapprox_true-unreach-call2_true-termination.i [2018-10-24 11:54:41,809 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/44886c586/9868b82657c34b1f8233a5811284cf9d/FLAG2a8b46036 [2018-10-24 11:54:42,177 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 11:54:42,178 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/underapprox_true-unreach-call2_true-termination.i [2018-10-24 11:54:42,184 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/44886c586/9868b82657c34b1f8233a5811284cf9d/FLAG2a8b46036 [2018-10-24 11:54:42,198 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/44886c586/9868b82657c34b1f8233a5811284cf9d [2018-10-24 11:54:42,208 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 11:54:42,209 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 11:54:42,210 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 11:54:42,210 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 11:54:42,214 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 11:54:42,215 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:54:42" (1/1) ... [2018-10-24 11:54:42,218 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c4dd763 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:54:42, skipping insertion in model container [2018-10-24 11:54:42,218 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:54:42" (1/1) ... [2018-10-24 11:54:42,228 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 11:54:42,249 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 11:54:42,438 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 11:54:42,443 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 11:54:42,460 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 11:54:42,476 INFO L193 MainTranslator]: Completed translation [2018-10-24 11:54:42,476 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:54:42 WrapperNode [2018-10-24 11:54:42,476 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 11:54:42,477 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 11:54:42,477 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 11:54:42,478 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 11:54:42,484 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:54:42" (1/1) ... [2018-10-24 11:54:42,489 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:54:42" (1/1) ... [2018-10-24 11:54:42,507 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 11:54:42,507 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 11:54:42,507 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 11:54:42,507 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 11:54:42,516 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:54:42" (1/1) ... [2018-10-24 11:54:42,516 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:54:42" (1/1) ... [2018-10-24 11:54:42,517 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:54:42" (1/1) ... [2018-10-24 11:54:42,517 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:54:42" (1/1) ... [2018-10-24 11:54:42,518 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:54:42" (1/1) ... [2018-10-24 11:54:42,523 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:54:42" (1/1) ... [2018-10-24 11:54:42,524 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:54:42" (1/1) ... [2018-10-24 11:54:42,525 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 11:54:42,525 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 11:54:42,525 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 11:54:42,526 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 11:54:42,526 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:54:42" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-24 11:54:42,637 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 11:54:42,637 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 11:54:42,823 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 11:54:42,824 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:54:42 BoogieIcfgContainer [2018-10-24 11:54:42,824 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 11:54:42,825 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 11:54:42,825 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 11:54:42,828 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 11:54:42,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 11:54:42" (1/3) ... [2018-10-24 11:54:42,829 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a10cabf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:54:42, skipping insertion in model container [2018-10-24 11:54:42,829 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:54:42" (2/3) ... [2018-10-24 11:54:42,830 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a10cabf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:54:42, skipping insertion in model container [2018-10-24 11:54:42,830 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:54:42" (3/3) ... [2018-10-24 11:54:42,832 INFO L112 eAbstractionObserver]: Analyzing ICFG underapprox_true-unreach-call2_true-termination.i [2018-10-24 11:54:42,841 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 11:54:42,849 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 11:54:42,865 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 11:54:42,896 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 11:54:42,896 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 11:54:42,897 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 11:54:42,897 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 11:54:42,897 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 11:54:42,897 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 11:54:42,897 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 11:54:42,897 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 11:54:42,897 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 11:54:42,912 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2018-10-24 11:54:42,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-10-24 11:54:42,918 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 11:54:42,918 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2018-10-24 11:54:42,920 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 11:54:42,926 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 11:54:42,926 INFO L82 PathProgramCache]: Analyzing trace with hash 889783783, now seen corresponding path program 1 times [2018-10-24 11:54:42,928 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 11:54:42,928 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 11:54:42,977 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:54:42,977 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 11:54:42,978 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:54:43,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 11:54:43,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 11:54:43,027 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 11:54:43,028 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-24 11:54:43,031 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-24 11:54:43,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-24 11:54:43,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-24 11:54:43,046 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 2 states. [2018-10-24 11:54:43,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 11:54:43,062 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2018-10-24 11:54:43,062 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-24 11:54:43,064 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2018-10-24 11:54:43,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 11:54:43,074 INFO L225 Difference]: With dead ends: 20 [2018-10-24 11:54:43,074 INFO L226 Difference]: Without dead ends: 8 [2018-10-24 11:54:43,078 INFO L605 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 [2018-10-24 11:54:43,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2018-10-24 11:54:43,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2018-10-24 11:54:43,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2018-10-24 11:54:43,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2018-10-24 11:54:43,110 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2018-10-24 11:54:43,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 11:54:43,111 INFO L481 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2018-10-24 11:54:43,111 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-24 11:54:43,111 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2018-10-24 11:54:43,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-10-24 11:54:43,112 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 11:54:43,112 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-10-24 11:54:43,112 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 11:54:43,113 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 11:54:43,113 INFO L82 PathProgramCache]: Analyzing trace with hash 1805923659, now seen corresponding path program 1 times [2018-10-24 11:54:43,113 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 11:54:43,113 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 11:54:43,114 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:54:43,114 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 11:54:43,115 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:54:43,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 11:54:43,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 11:54:43,258 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 11:54:43,258 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 11:54:43,265 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 11:54:43,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 11:54:43,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 11:54:43,266 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 3 states. [2018-10-24 11:54:43,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 11:54:43,327 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2018-10-24 11:54:43,328 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 11:54:43,328 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2018-10-24 11:54:43,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 11:54:43,329 INFO L225 Difference]: With dead ends: 14 [2018-10-24 11:54:43,329 INFO L226 Difference]: Without dead ends: 10 [2018-10-24 11:54:43,330 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 11:54:43,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2018-10-24 11:54:43,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-10-24 11:54:43,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2018-10-24 11:54:43,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-10-24 11:54:43,335 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 7 [2018-10-24 11:54:43,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 11:54:43,336 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2018-10-24 11:54:43,336 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 11:54:43,336 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2018-10-24 11:54:43,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-10-24 11:54:43,336 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 11:54:43,337 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 11:54:43,337 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 11:54:43,337 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 11:54:43,337 INFO L82 PathProgramCache]: Analyzing trace with hash 373599493, now seen corresponding path program 1 times [2018-10-24 11:54:43,338 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 11:54:43,338 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 11:54:43,339 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:54:43,339 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 11:54:43,340 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:54:43,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 11:54:43,474 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 11:54:43,474 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 11:54:43,475 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-24 11:54:43,486 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 11:54:43,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 11:54:43,515 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 11:54:43,541 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 11:54:43,561 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 11:54:43,562 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-10-24 11:54:43,563 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 11:54:43,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 11:54:43,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-24 11:54:43,563 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 4 states. [2018-10-24 11:54:43,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 11:54:43,610 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2018-10-24 11:54:43,610 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 11:54:43,610 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2018-10-24 11:54:43,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 11:54:43,611 INFO L225 Difference]: With dead ends: 16 [2018-10-24 11:54:43,611 INFO L226 Difference]: Without dead ends: 12 [2018-10-24 11:54:43,612 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 3 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-24 11:54:43,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-10-24 11:54:43,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-10-24 11:54:43,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-10-24 11:54:43,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-10-24 11:54:43,615 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 9 [2018-10-24 11:54:43,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 11:54:43,615 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2018-10-24 11:54:43,616 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 11:54:43,616 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-10-24 11:54:43,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-10-24 11:54:43,616 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 11:54:43,617 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1] [2018-10-24 11:54:43,617 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 11:54:43,617 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 11:54:43,617 INFO L82 PathProgramCache]: Analyzing trace with hash -1700389313, now seen corresponding path program 2 times [2018-10-24 11:54:43,617 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 11:54:43,618 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 11:54:43,618 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:54:43,619 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 11:54:43,619 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:54:43,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 11:54:43,716 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 11:54:43,717 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 11:54:43,717 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-24 11:54:43,727 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-24 11:54:43,749 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-24 11:54:43,750 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-24 11:54:43,752 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 11:54:43,778 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 11:54:43,806 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 11:54:43,807 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-10-24 11:54:43,807 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 11:54:43,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 11:54:43,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 11:54:43,808 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 5 states. [2018-10-24 11:54:43,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 11:54:43,913 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2018-10-24 11:54:43,914 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 11:54:43,914 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2018-10-24 11:54:43,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 11:54:43,915 INFO L225 Difference]: With dead ends: 18 [2018-10-24 11:54:43,915 INFO L226 Difference]: Without dead ends: 14 [2018-10-24 11:54:43,916 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 3 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 11:54:43,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-10-24 11:54:43,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-10-24 11:54:43,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-10-24 11:54:43,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-10-24 11:54:43,919 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 11 [2018-10-24 11:54:43,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 11:54:43,919 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2018-10-24 11:54:43,919 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 11:54:43,920 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2018-10-24 11:54:43,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-10-24 11:54:43,920 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 11:54:43,920 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1] [2018-10-24 11:54:43,921 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 11:54:43,921 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 11:54:43,921 INFO L82 PathProgramCache]: Analyzing trace with hash -1938806535, now seen corresponding path program 3 times [2018-10-24 11:54:43,921 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 11:54:43,921 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 11:54:43,922 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:54:43,923 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-24 11:54:43,923 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:54:43,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 11:54:44,245 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 11:54:44,246 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 11:54:44,246 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 11:54:44,253 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-24 11:54:44,261 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2018-10-24 11:54:44,262 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-24 11:54:44,264 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 11:54:44,360 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-10-24 11:54:44,380 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 11:54:44,380 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2018-10-24 11:54:44,381 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-24 11:54:44,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-24 11:54:44,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-10-24 11:54:44,382 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 9 states. [2018-10-24 11:54:44,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 11:54:44,471 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2018-10-24 11:54:44,472 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-24 11:54:44,472 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13 [2018-10-24 11:54:44,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 11:54:44,473 INFO L225 Difference]: With dead ends: 18 [2018-10-24 11:54:44,473 INFO L226 Difference]: Without dead ends: 0 [2018-10-24 11:54:44,474 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2018-10-24 11:54:44,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-24 11:54:44,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-24 11:54:44,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-24 11:54:44,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-24 11:54:44,475 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2018-10-24 11:54:44,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 11:54:44,475 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-24 11:54:44,475 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-24 11:54:44,475 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-24 11:54:44,476 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-24 11:54:44,480 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-10-24 11:54:44,642 WARN L179 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 12 [2018-10-24 11:54:44,645 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-10-24 11:54:44,645 INFO L425 ceAbstractionStarter]: For program point L11-1(lines 11 14) no Hoare annotation was computed. [2018-10-24 11:54:44,645 INFO L421 ceAbstractionStarter]: At program point L11-3(lines 11 14) the Hoare annotation is: (or (< (mod (+ ULTIMATE.start_main_~x~0 4294967295) 4294967296) 6) (and (<= ULTIMATE.start_main_~x~0 0) (<= 0 ULTIMATE.start_main_~x~0))) [2018-10-24 11:54:44,645 INFO L425 ceAbstractionStarter]: For program point L11-4(lines 11 14) no Hoare annotation was computed. [2018-10-24 11:54:44,645 INFO L425 ceAbstractionStarter]: For program point L3(lines 3 5) no Hoare annotation was computed. [2018-10-24 11:54:44,646 INFO L428 ceAbstractionStarter]: At program point L3-2(lines 2 7) the Hoare annotation is: true [2018-10-24 11:54:44,646 INFO L425 ceAbstractionStarter]: For program point L-1(line -1) no Hoare annotation was computed. [2018-10-24 11:54:44,646 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2018-10-24 11:54:44,646 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-10-24 11:54:44,646 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2018-10-24 11:54:44,646 INFO L425 ceAbstractionStarter]: For program point L8(lines 8 16) no Hoare annotation was computed. [2018-10-24 11:54:44,646 INFO L425 ceAbstractionStarter]: For program point L4(line 4) no Hoare annotation was computed. [2018-10-24 11:54:44,657 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 11:54:44 BoogieIcfgContainer [2018-10-24 11:54:44,657 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 11:54:44,658 INFO L168 Benchmark]: Toolchain (without parser) took 2449.77 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 726.1 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -670.9 MB). Peak memory consumption was 55.3 MB. Max. memory is 7.1 GB. [2018-10-24 11:54:44,660 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 11:54:44,661 INFO L168 Benchmark]: CACSL2BoogieTranslator took 266.73 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-10-24 11:54:44,662 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.64 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 11:54:44,662 INFO L168 Benchmark]: Boogie Preprocessor took 17.76 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 11:54:44,663 INFO L168 Benchmark]: RCFGBuilder took 298.80 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 726.1 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -778.2 MB). Peak memory consumption was 26.7 MB. Max. memory is 7.1 GB. [2018-10-24 11:54:44,664 INFO L168 Benchmark]: TraceAbstraction took 1832.75 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 96.8 MB). Peak memory consumption was 96.8 MB. Max. memory is 7.1 GB. [2018-10-24 11:54:44,669 INFO L336 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 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 266.73 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 29.64 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 17.76 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 298.80 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 726.1 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -778.2 MB). Peak memory consumption was 26.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1832.75 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 96.8 MB). Peak memory consumption was 96.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: 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: 2]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: (x + 4294967295) % 4294967296 < 6 || (x <= 0 && 0 <= x) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 1 error locations. SAFE Result, 1.7s OverallTime, 5 OverallIterations, 4 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 42 SDtfs, 3 SDslu, 48 SDs, 0 SdLazy, 69 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 55 GetRequests, 33 SyntacticMatches, 8 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=4, 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 7 NumberOfFragments, 16 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 21 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 79 NumberOfCodeBlocks, 75 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 71 ConstructedInterpolants, 0 QuantifiedInterpolants, 2741 SizeOfPredicates, 3 NumberOfNonLiveVariables, 72 ConjunctsInSsa, 34 ConjunctsInUnsatCore, 8 InterpolantComputations, 3 PerfectInterpolantSequences, 12/40 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...