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-new/count_by_1_variant_true-unreach-call_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 11:59:46,029 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 11:59:46,031 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 11:59:46,043 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 11:59:46,043 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 11:59:46,044 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 11:59:46,045 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 11:59:46,047 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 11:59:46,049 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 11:59:46,049 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 11:59:46,050 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 11:59:46,051 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 11:59:46,052 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 11:59:46,053 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 11:59:46,054 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 11:59:46,055 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 11:59:46,055 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 11:59:46,057 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 11:59:46,059 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 11:59:46,061 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 11:59:46,062 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 11:59:46,063 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 11:59:46,065 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 11:59:46,074 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 11:59:46,089 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 11:59:46,089 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 11:59:46,090 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 11:59:46,090 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 11:59:46,091 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 11:59:46,091 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 11:59:46,091 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 11:59:46,091 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 11:59:46,092 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 11:59:46,092 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 11:59:46,092 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 11:59:46,092 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 11:59:46,092 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 11:59:46,093 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 11:59:46,093 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 11:59:46,093 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 11:59:46,093 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 11:59:46,093 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 11:59:46,094 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 11:59:46,094 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 11:59:46,094 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 11:59:46,094 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 11:59:46,094 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 11:59:46,094 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 11:59:46,095 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 11:59:46,095 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 11:59:46,095 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 11:59:46,095 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 11:59:46,138 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 11:59:46,158 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 11:59:46,163 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 11:59:46,164 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 11:59:46,165 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 11:59:46,165 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/loop-new/count_by_1_variant_true-unreach-call_true-termination.i [2018-10-24 11:59:46,227 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/88d9a51a5/ec1360cca88b4321bff520f94daf3083/FLAG966e535d5 [2018-10-24 11:59:46,659 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 11:59:46,660 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-new/count_by_1_variant_true-unreach-call_true-termination.i [2018-10-24 11:59:46,666 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/88d9a51a5/ec1360cca88b4321bff520f94daf3083/FLAG966e535d5 [2018-10-24 11:59:46,680 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/88d9a51a5/ec1360cca88b4321bff520f94daf3083 [2018-10-24 11:59:46,690 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 11:59:46,691 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 11:59:46,692 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 11:59:46,692 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 11:59:46,697 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 11:59:46,698 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:59:46" (1/1) ... [2018-10-24 11:59:46,700 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f1f1ae1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:59:46, skipping insertion in model container [2018-10-24 11:59:46,701 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:59:46" (1/1) ... [2018-10-24 11:59:46,712 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 11:59:46,737 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 11:59:46,933 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 11:59:46,938 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 11:59:46,954 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 11:59:46,972 INFO L193 MainTranslator]: Completed translation [2018-10-24 11:59:46,973 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:59:46 WrapperNode [2018-10-24 11:59:46,973 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 11:59:46,977 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 11:59:46,977 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 11:59:46,977 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 11:59:46,986 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:59:46" (1/1) ... [2018-10-24 11:59:46,992 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:59:46" (1/1) ... [2018-10-24 11:59:47,014 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 11:59:47,015 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 11:59:47,015 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 11:59:47,015 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 11:59:47,025 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:59:46" (1/1) ... [2018-10-24 11:59:47,025 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:59:46" (1/1) ... [2018-10-24 11:59:47,026 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:59:46" (1/1) ... [2018-10-24 11:59:47,026 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:59:46" (1/1) ... [2018-10-24 11:59:47,028 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:59:46" (1/1) ... [2018-10-24 11:59:47,035 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:59:46" (1/1) ... [2018-10-24 11:59:47,036 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:59:46" (1/1) ... [2018-10-24 11:59:47,037 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 11:59:47,038 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 11:59:47,038 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 11:59:47,038 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 11:59:47,039 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:59:46" (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 11:59:47,162 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 11:59:47,162 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 11:59:47,360 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 11:59:47,361 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:59:47 BoogieIcfgContainer [2018-10-24 11:59:47,361 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 11:59:47,362 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 11:59:47,362 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 11:59:47,365 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 11:59:47,365 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 11:59:46" (1/3) ... [2018-10-24 11:59:47,366 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e4e019 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:59:47, skipping insertion in model container [2018-10-24 11:59:47,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:59:46" (2/3) ... [2018-10-24 11:59:47,367 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e4e019 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:59:47, skipping insertion in model container [2018-10-24 11:59:47,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:59:47" (3/3) ... [2018-10-24 11:59:47,368 INFO L112 eAbstractionObserver]: Analyzing ICFG count_by_1_variant_true-unreach-call_true-termination.i [2018-10-24 11:59:47,378 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 11:59:47,385 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 11:59:47,401 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 11:59:47,432 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 11:59:47,433 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 11:59:47,433 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 11:59:47,433 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 11:59:47,434 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 11:59:47,434 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 11:59:47,434 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 11:59:47,434 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 11:59:47,434 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 11:59:47,449 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2018-10-24 11:59:47,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-10-24 11:59:47,455 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 11:59:47,456 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2018-10-24 11:59:47,459 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 11:59:47,464 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 11:59:47,465 INFO L82 PathProgramCache]: Analyzing trace with hash 889540490, now seen corresponding path program 1 times [2018-10-24 11:59:47,467 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 11:59:47,468 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 11:59:47,522 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:59:47,522 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 11:59:47,522 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:59:47,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 11:59:47,705 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 11:59:47,710 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 11:59:47,714 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 11:59:47,722 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 11:59:47,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 11:59:47,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-24 11:59:47,746 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 4 states. [2018-10-24 11:59:47,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 11:59:47,866 INFO L93 Difference]: Finished difference Result 35 states and 43 transitions. [2018-10-24 11:59:47,867 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 11:59:47,868 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2018-10-24 11:59:47,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 11:59:47,879 INFO L225 Difference]: With dead ends: 35 [2018-10-24 11:59:47,879 INFO L226 Difference]: Without dead ends: 16 [2018-10-24 11:59:47,882 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-24 11:59:47,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-10-24 11:59:47,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 12. [2018-10-24 11:59:47,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-10-24 11:59:47,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-10-24 11:59:47,921 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 6 [2018-10-24 11:59:47,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 11:59:47,921 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2018-10-24 11:59:47,922 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 11:59:47,922 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-10-24 11:59:47,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-10-24 11:59:47,922 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 11:59:47,923 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 11:59:47,923 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 11:59:47,923 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 11:59:47,924 INFO L82 PathProgramCache]: Analyzing trace with hash -192795628, now seen corresponding path program 1 times [2018-10-24 11:59:47,924 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 11:59:47,924 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 11:59:47,925 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:59:47,925 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 11:59:47,925 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:59:47,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 11:59:48,182 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 11:59:48,182 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 11:59:48,183 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) [2018-10-24 11:59:48,202 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 11:59:48,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 11:59:48,235 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 11:59:48,275 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 11:59:48,298 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 11:59:48,298 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 7 [2018-10-24 11:59:48,299 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 11:59:48,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 11:59:48,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-10-24 11:59:48,300 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 7 states. [2018-10-24 11:59:48,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 11:59:48,469 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2018-10-24 11:59:48,470 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 11:59:48,470 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2018-10-24 11:59:48,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 11:59:48,472 INFO L225 Difference]: With dead ends: 23 [2018-10-24 11:59:48,472 INFO L226 Difference]: Without dead ends: 21 [2018-10-24 11:59:48,473 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2018-10-24 11:59:48,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-10-24 11:59:48,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 17. [2018-10-24 11:59:48,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-10-24 11:59:48,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2018-10-24 11:59:48,478 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 11 [2018-10-24 11:59:48,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 11:59:48,478 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2018-10-24 11:59:48,478 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 11:59:48,479 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2018-10-24 11:59:48,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-10-24 11:59:48,479 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 11:59:48,479 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1] [2018-10-24 11:59:48,480 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 11:59:48,480 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 11:59:48,480 INFO L82 PathProgramCache]: Analyzing trace with hash -668232246, now seen corresponding path program 2 times [2018-10-24 11:59:48,480 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 11:59:48,481 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 11:59:48,481 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:59:48,482 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 11:59:48,482 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:59:48,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 11:59:48,823 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 11:59:48,823 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 11:59:48,823 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 11:59:48,835 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-24 11:59:48,867 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-24 11:59:48,867 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-24 11:59:48,869 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 11:59:49,053 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 11:59:49,081 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 11:59:49,081 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 10 [2018-10-24 11:59:49,081 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-24 11:59:49,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-24 11:59:49,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-10-24 11:59:49,082 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 10 states. [2018-10-24 11:59:49,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 11:59:49,347 INFO L93 Difference]: Finished difference Result 26 states and 27 transitions. [2018-10-24 11:59:49,347 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 11:59:49,348 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 16 [2018-10-24 11:59:49,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 11:59:49,348 INFO L225 Difference]: With dead ends: 26 [2018-10-24 11:59:49,348 INFO L226 Difference]: Without dead ends: 0 [2018-10-24 11:59:49,350 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=81, Invalid=129, Unknown=0, NotChecked=0, Total=210 [2018-10-24 11:59:49,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-24 11:59:49,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-24 11:59:49,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-24 11:59:49,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-24 11:59:49,351 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2018-10-24 11:59:49,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 11:59:49,351 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-24 11:59:49,352 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-24 11:59:49,352 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-24 11:59:49,352 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-24 11:59:49,356 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-10-24 11:59:49,497 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-10-24 11:59:49,497 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-10-24 11:59:49,498 INFO L428 ceAbstractionStarter]: At program point L15(lines 10 16) the Hoare annotation is: true [2018-10-24 11:59:49,498 INFO L425 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-10-24 11:59:49,498 INFO L425 ceAbstractionStarter]: For program point L-1(line -1) no Hoare annotation was computed. [2018-10-24 11:59:49,498 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2018-10-24 11:59:49,498 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-10-24 11:59:49,499 INFO L425 ceAbstractionStarter]: For program point L12-1(lines 12 14) no Hoare annotation was computed. [2018-10-24 11:59:49,499 INFO L425 ceAbstractionStarter]: For program point L12-3(lines 12 14) no Hoare annotation was computed. [2018-10-24 11:59:49,499 INFO L421 ceAbstractionStarter]: At program point L12-4(lines 12 14) the Hoare annotation is: (or (<= ULTIMATE.start_main_~i~0 0) (and (<= ULTIMATE.start_main_~i~0 1000000) (= ULTIMATE.start___VERIFIER_assert_~cond 1))) [2018-10-24 11:59:49,499 INFO L425 ceAbstractionStarter]: For program point L12-5(lines 12 14) no Hoare annotation was computed. [2018-10-24 11:59:49,499 INFO L425 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-10-24 11:59:49,499 INFO L421 ceAbstractionStarter]: At program point L4-2(lines 3 8) the Hoare annotation is: (and (= ULTIMATE.start___VERIFIER_assert_~cond 1) (<= ULTIMATE.start_main_~i~0 999999)) [2018-10-24 11:59:49,511 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 11:59:49 BoogieIcfgContainer [2018-10-24 11:59:49,511 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 11:59:49,512 INFO L168 Benchmark]: Toolchain (without parser) took 2821.58 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 758.6 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -703.9 MB). Peak memory consumption was 54.7 MB. Max. memory is 7.1 GB. [2018-10-24 11:59:49,514 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 11:59:49,514 INFO L168 Benchmark]: CACSL2BoogieTranslator took 281.12 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 11:59:49,515 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.22 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 11:59:49,516 INFO L168 Benchmark]: Boogie Preprocessor took 22.48 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 11:59:49,517 INFO L168 Benchmark]: RCFGBuilder took 323.11 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 758.6 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -801.7 MB). Peak memory consumption was 26.6 MB. Max. memory is 7.1 GB. [2018-10-24 11:59:49,518 INFO L168 Benchmark]: TraceAbstraction took 2149.25 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 87.2 MB). Peak memory consumption was 87.2 MB. Max. memory is 7.1 GB. [2018-10-24 11:59:49,523 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 281.12 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 38.22 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 22.48 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 323.11 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 758.6 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -801.7 MB). Peak memory consumption was 26.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2149.25 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 87.2 MB). Peak memory consumption was 87.2 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: 10]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 3]: Loop Invariant Derived loop invariant: cond == 1 && i <= 999999 - InvariantResult [Line: 12]: Loop Invariant Derived loop invariant: i <= 0 || (i <= 1000000 && cond == 1) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. SAFE Result, 2.0s OverallTime, 3 OverallIterations, 3 TraceHistogramMax, 0.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 24 SDtfs, 68 SDslu, 56 SDs, 0 SdLazy, 37 SolverSat, 28 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 56 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 8 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 14 NumberOfFragments, 19 HoareAnnotationTreeSize, 3 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 106 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 60 NumberOfCodeBlocks, 60 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 55 ConstructedInterpolants, 0 QuantifiedInterpolants, 1810 SizeOfPredicates, 6 NumberOfNonLiveVariables, 58 ConjunctsInSsa, 17 ConjunctsInUnsatCore, 5 InterpolantComputations, 1 PerfectInterpolantSequences, 4/28 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...