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-invgen/nested6_true-unreach-call_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8c3fbe1 [2018-10-22 15:47:40,004 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-22 15:47:40,006 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-22 15:47:40,022 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-22 15:47:40,022 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-22 15:47:40,024 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-22 15:47:40,025 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-22 15:47:40,027 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-22 15:47:40,028 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-22 15:47:40,029 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-22 15:47:40,030 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-22 15:47:40,030 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-22 15:47:40,031 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-22 15:47:40,032 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-22 15:47:40,033 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-22 15:47:40,034 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-22 15:47:40,035 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-22 15:47:40,037 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-22 15:47:40,039 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-22 15:47:40,042 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-22 15:47:40,044 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-22 15:47:40,045 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-22 15:47:40,047 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-22 15:47:40,055 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 [2018-10-22 15:47:40,078 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-22 15:47:40,078 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-22 15:47:40,079 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-22 15:47:40,079 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-22 15:47:40,080 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-22 15:47:40,080 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-22 15:47:40,080 INFO L133 SettingsManager]: * Use SBE=true [2018-10-22 15:47:40,080 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-22 15:47:40,081 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-22 15:47:40,081 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-22 15:47:40,081 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-22 15:47:40,081 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-22 15:47:40,081 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-22 15:47:40,081 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-22 15:47:40,082 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-22 15:47:40,082 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-22 15:47:40,082 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-22 15:47:40,082 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-22 15:47:40,082 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-22 15:47:40,083 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-22 15:47:40,084 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-22 15:47:40,084 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-22 15:47:40,084 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-22 15:47:40,084 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-22 15:47:40,085 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-22 15:47:40,085 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-22 15:47:40,085 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-22 15:47:40,085 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-22 15:47:40,156 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-22 15:47:40,172 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-22 15:47:40,176 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-22 15:47:40,178 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-22 15:47:40,178 INFO L276 PluginConnector]: CDTParser initialized [2018-10-22 15:47:40,179 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/loop-invgen/nested6_true-unreach-call_true-termination.i [2018-10-22 15:47:40,244 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/5eab12bc1/daaa5659d5404ddfb871097da771d727/FLAGe9a6e08ee [2018-10-22 15:47:40,655 INFO L298 CDTParser]: Found 1 translation units. [2018-10-22 15:47:40,656 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/nested6_true-unreach-call_true-termination.i [2018-10-22 15:47:40,661 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/5eab12bc1/daaa5659d5404ddfb871097da771d727/FLAGe9a6e08ee [2018-10-22 15:47:40,675 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/5eab12bc1/daaa5659d5404ddfb871097da771d727 [2018-10-22 15:47:40,684 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-22 15:47:40,686 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-22 15:47:40,687 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-22 15:47:40,687 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-22 15:47:40,691 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-22 15:47:40,692 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 03:47:40" (1/1) ... [2018-10-22 15:47:40,695 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71739530 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:47:40, skipping insertion in model container [2018-10-22 15:47:40,695 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 03:47:40" (1/1) ... [2018-10-22 15:47:40,706 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-22 15:47:40,728 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-22 15:47:40,904 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-22 15:47:40,908 INFO L189 MainTranslator]: Completed pre-run [2018-10-22 15:47:40,928 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-22 15:47:40,944 INFO L193 MainTranslator]: Completed translation [2018-10-22 15:47:40,944 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:47:40 WrapperNode [2018-10-22 15:47:40,945 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-22 15:47:40,945 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-22 15:47:40,946 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-22 15:47:40,946 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-22 15:47:40,956 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:47:40" (1/1) ... [2018-10-22 15:47:40,962 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:47:40" (1/1) ... [2018-10-22 15:47:40,984 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-22 15:47:40,984 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-22 15:47:40,984 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-22 15:47:40,984 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-22 15:47:40,995 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:47:40" (1/1) ... [2018-10-22 15:47:40,995 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:47:40" (1/1) ... [2018-10-22 15:47:40,996 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:47:40" (1/1) ... [2018-10-22 15:47:40,996 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:47:40" (1/1) ... [2018-10-22 15:47:40,998 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:47:40" (1/1) ... [2018-10-22 15:47:41,004 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:47:40" (1/1) ... [2018-10-22 15:47:41,005 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:47:40" (1/1) ... [2018-10-22 15:47:41,007 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-22 15:47:41,008 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-22 15:47:41,008 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-22 15:47:41,008 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-22 15:47:41,009 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:47:40" (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 [2018-10-22 15:47:41,152 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-22 15:47:41,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-22 15:47:41,152 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-10-22 15:47:41,152 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-10-22 15:47:41,562 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-22 15:47:41,563 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 03:47:41 BoogieIcfgContainer [2018-10-22 15:47:41,563 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-22 15:47:41,564 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-22 15:47:41,564 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-22 15:47:41,567 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-22 15:47:41,568 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 03:47:40" (1/3) ... [2018-10-22 15:47:41,568 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34b68113 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 03:47:41, skipping insertion in model container [2018-10-22 15:47:41,569 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:47:40" (2/3) ... [2018-10-22 15:47:41,569 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34b68113 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 03:47:41, skipping insertion in model container [2018-10-22 15:47:41,569 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 03:47:41" (3/3) ... [2018-10-22 15:47:41,571 INFO L112 eAbstractionObserver]: Analyzing ICFG nested6_true-unreach-call_true-termination.i [2018-10-22 15:47:41,589 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-22 15:47:41,596 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-22 15:47:41,612 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-22 15:47:41,645 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-22 15:47:41,646 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-22 15:47:41,646 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-22 15:47:41,647 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-22 15:47:41,647 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-22 15:47:41,647 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-22 15:47:41,647 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-22 15:47:41,647 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-22 15:47:41,647 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-22 15:47:41,666 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2018-10-22 15:47:41,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-10-22 15:47:41,672 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 15:47:41,673 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 15:47:41,675 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 15:47:41,681 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 15:47:41,681 INFO L82 PathProgramCache]: Analyzing trace with hash 698413655, now seen corresponding path program 1 times [2018-10-22 15:47:41,683 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-22 15:47:41,683 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-22 15:47:41,733 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:47:41,733 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 15:47:41,733 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:47:41,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:47:41,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 15:47:41,908 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-22 15:47:41,908 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-22 15:47:41,912 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-22 15:47:41,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-22 15:47:41,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-22 15:47:41,928 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 5 states. [2018-10-22 15:47:42,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 15:47:42,094 INFO L93 Difference]: Finished difference Result 59 states and 81 transitions. [2018-10-22 15:47:42,094 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-22 15:47:42,096 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2018-10-22 15:47:42,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 15:47:42,105 INFO L225 Difference]: With dead ends: 59 [2018-10-22 15:47:42,105 INFO L226 Difference]: Without dead ends: 28 [2018-10-22 15:47:42,109 INFO L605 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 [2018-10-22 15:47:42,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-10-22 15:47:42,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2018-10-22 15:47:42,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-10-22 15:47:42,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2018-10-22 15:47:42,149 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 14 [2018-10-22 15:47:42,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 15:47:42,150 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2018-10-22 15:47:42,150 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-22 15:47:42,150 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2018-10-22 15:47:42,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-10-22 15:47:42,151 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 15:47:42,151 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 15:47:42,152 INFO L424 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 15:47:42,152 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 15:47:42,152 INFO L82 PathProgramCache]: Analyzing trace with hash 2028577837, now seen corresponding path program 1 times [2018-10-22 15:47:42,153 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-22 15:47:42,153 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-22 15:47:42,154 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:47:42,154 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 15:47:42,154 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:47:42,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:47:42,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 15:47:42,356 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-22 15:47:42,357 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-22 15:47:42,361 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-22 15:47:42,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-22 15:47:42,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-10-22 15:47:42,365 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 6 states. [2018-10-22 15:47:42,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 15:47:42,773 INFO L93 Difference]: Finished difference Result 41 states and 48 transitions. [2018-10-22 15:47:42,773 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-22 15:47:42,774 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2018-10-22 15:47:42,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 15:47:42,777 INFO L225 Difference]: With dead ends: 41 [2018-10-22 15:47:42,778 INFO L226 Difference]: Without dead ends: 39 [2018-10-22 15:47:42,779 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-10-22 15:47:42,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-10-22 15:47:42,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 32. [2018-10-22 15:47:42,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-10-22 15:47:42,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2018-10-22 15:47:42,797 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 16 [2018-10-22 15:47:42,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 15:47:42,798 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2018-10-22 15:47:42,799 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-22 15:47:42,799 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2018-10-22 15:47:42,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-22 15:47:42,800 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 15:47:42,800 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 15:47:42,800 INFO L424 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 15:47:42,801 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 15:47:42,802 INFO L82 PathProgramCache]: Analyzing trace with hash 2035128750, now seen corresponding path program 1 times [2018-10-22 15:47:42,802 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-22 15:47:42,802 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-22 15:47:42,803 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:47:42,803 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 15:47:42,804 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:47:42,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:47:43,004 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 15:47:43,004 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-22 15:47:43,005 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 [2018-10-22 15:47:43,017 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 15:47:43,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:47:43,037 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-22 15:47:43,371 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 15:47:43,401 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-22 15:47:43,401 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 9 [2018-10-22 15:47:43,402 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-22 15:47:43,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-22 15:47:43,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2018-10-22 15:47:43,403 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand 9 states. [2018-10-22 15:47:43,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 15:47:43,991 INFO L93 Difference]: Finished difference Result 59 states and 67 transitions. [2018-10-22 15:47:43,992 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-22 15:47:43,992 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 19 [2018-10-22 15:47:43,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 15:47:43,996 INFO L225 Difference]: With dead ends: 59 [2018-10-22 15:47:43,996 INFO L226 Difference]: Without dead ends: 57 [2018-10-22 15:47:43,997 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-10-22 15:47:43,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-10-22 15:47:44,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2018-10-22 15:47:44,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-10-22 15:47:44,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 65 transitions. [2018-10-22 15:47:44,011 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 65 transitions. Word has length 19 [2018-10-22 15:47:44,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 15:47:44,012 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 65 transitions. [2018-10-22 15:47:44,012 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-22 15:47:44,012 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 65 transitions. [2018-10-22 15:47:44,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-10-22 15:47:44,013 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 15:47:44,013 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 15:47:44,014 INFO L424 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 15:47:44,014 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 15:47:44,014 INFO L82 PathProgramCache]: Analyzing trace with hash 341476101, now seen corresponding path program 1 times [2018-10-22 15:47:44,015 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-22 15:47:44,015 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-22 15:47:44,016 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:47:44,016 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 15:47:44,016 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:47:44,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:47:44,183 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 15:47:44,183 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-22 15:47:44,184 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 [2018-10-22 15:47:44,192 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 15:47:44,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:47:44,206 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-22 15:47:44,300 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-22 15:47:44,323 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-22 15:47:44,323 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 10 [2018-10-22 15:47:44,323 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-22 15:47:44,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-22 15:47:44,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2018-10-22 15:47:44,324 INFO L87 Difference]: Start difference. First operand 57 states and 65 transitions. Second operand 10 states. [2018-10-22 15:47:45,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 15:47:45,011 INFO L93 Difference]: Finished difference Result 154 states and 193 transitions. [2018-10-22 15:47:45,011 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-22 15:47:45,012 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 25 [2018-10-22 15:47:45,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 15:47:45,015 INFO L225 Difference]: With dead ends: 154 [2018-10-22 15:47:45,015 INFO L226 Difference]: Without dead ends: 102 [2018-10-22 15:47:45,016 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2018-10-22 15:47:45,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2018-10-22 15:47:45,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 63. [2018-10-22 15:47:45,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-10-22 15:47:45,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 71 transitions. [2018-10-22 15:47:45,035 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 71 transitions. Word has length 25 [2018-10-22 15:47:45,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 15:47:45,036 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 71 transitions. [2018-10-22 15:47:45,036 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-22 15:47:45,036 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 71 transitions. [2018-10-22 15:47:45,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-10-22 15:47:45,037 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 15:47:45,037 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 15:47:45,038 INFO L424 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 15:47:45,038 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 15:47:45,038 INFO L82 PathProgramCache]: Analyzing trace with hash -1995543734, now seen corresponding path program 1 times [2018-10-22 15:47:45,038 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-22 15:47:45,038 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-22 15:47:45,039 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:47:45,040 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 15:47:45,040 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:47:45,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:47:45,166 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-10-22 15:47:45,167 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-22 15:47:45,167 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) [2018-10-22 15:47:45,184 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-22 15:47:45,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:47:45,208 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-22 15:47:45,317 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-22 15:47:45,338 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-22 15:47:45,338 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11 [2018-10-22 15:47:45,339 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-22 15:47:45,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-22 15:47:45,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2018-10-22 15:47:45,340 INFO L87 Difference]: Start difference. First operand 63 states and 71 transitions. Second operand 11 states. [2018-10-22 15:47:45,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 15:47:45,657 INFO L93 Difference]: Finished difference Result 124 states and 145 transitions. [2018-10-22 15:47:45,658 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-22 15:47:45,658 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 33 [2018-10-22 15:47:45,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 15:47:45,659 INFO L225 Difference]: With dead ends: 124 [2018-10-22 15:47:45,659 INFO L226 Difference]: Without dead ends: 0 [2018-10-22 15:47:45,662 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2018-10-22 15:47:45,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-22 15:47:45,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-22 15:47:45,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-22 15:47:45,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-22 15:47:45,663 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 33 [2018-10-22 15:47:45,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 15:47:45,663 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-22 15:47:45,663 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-22 15:47:45,663 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-22 15:47:45,663 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-22 15:47:45,667 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-10-22 15:47:45,732 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-22 15:47:46,180 WARN L179 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 15 [2018-10-22 15:47:46,241 INFO L421 ceAbstractionStarter]: At program point L27(line 27) the Hoare annotation is: (and (<= (+ ULTIMATE.start_main_~j~0 1) ULTIMATE.start_main_~n~0) (<= ULTIMATE.start_main_~k~0 ULTIMATE.start_main_~n~0) (<= (* 2 ULTIMATE.start_main_~i~0) ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~k~0)) [2018-10-22 15:47:46,241 INFO L421 ceAbstractionStarter]: At program point L27-1(line 27) the Hoare annotation is: (and (<= (+ ULTIMATE.start_main_~j~0 1) ULTIMATE.start_main_~n~0) (<= ULTIMATE.start_main_~k~0 ULTIMATE.start_main_~n~0) (<= (* 2 ULTIMATE.start_main_~i~0) ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~k~0)) [2018-10-22 15:47:46,241 INFO L421 ceAbstractionStarter]: At program point L23(line 23) the Hoare annotation is: (let ((.cse0 (* 2 ULTIMATE.start_main_~i~0))) (and (<= (+ ULTIMATE.start_main_~k~0 1) ULTIMATE.start_main_~n~0) (<= .cse0 ULTIMATE.start_main_~k~0) (<= (+ ULTIMATE.start_main_~j~0 1) ULTIMATE.start_main_~n~0) (<= .cse0 ULTIMATE.start_main_~j~0))) [2018-10-22 15:47:46,241 INFO L425 ceAbstractionStarter]: For program point L23-1(lines 22 24) no Hoare annotation was computed. [2018-10-22 15:47:46,241 INFO L425 ceAbstractionStarter]: For program point L19-1(lines 19 31) no Hoare annotation was computed. [2018-10-22 15:47:46,241 INFO L425 ceAbstractionStarter]: For program point L19-3(lines 19 31) no Hoare annotation was computed. [2018-10-22 15:47:46,242 INFO L425 ceAbstractionStarter]: For program point L15(lines 15 18) no Hoare annotation was computed. [2018-10-22 15:47:46,242 INFO L421 ceAbstractionStarter]: At program point L19-4(lines 19 31) the Hoare annotation is: (let ((.cse0 (<= ULTIMATE.start_main_~k~0 ULTIMATE.start_main_~n~0)) (.cse1 (<= ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~k~0))) (or (and .cse0 (<= ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~j~0) .cse1) (and (<= ULTIMATE.start_main_~i~0 0) .cse0 .cse1))) [2018-10-22 15:47:46,242 INFO L425 ceAbstractionStarter]: For program point L15-1(lines 15 18) no Hoare annotation was computed. [2018-10-22 15:47:46,242 INFO L428 ceAbstractionStarter]: At program point L32(lines 10 34) the Hoare annotation is: true [2018-10-22 15:47:46,242 INFO L425 ceAbstractionStarter]: For program point L-1(line -1) no Hoare annotation was computed. [2018-10-22 15:47:46,242 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2018-10-22 15:47:46,242 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-10-22 15:47:46,242 INFO L425 ceAbstractionStarter]: For program point L28(lines 20 30) no Hoare annotation was computed. [2018-10-22 15:47:46,243 INFO L425 ceAbstractionStarter]: For program point L20-1(lines 20 30) no Hoare annotation was computed. [2018-10-22 15:47:46,243 INFO L421 ceAbstractionStarter]: At program point L20-3(lines 20 30) the Hoare annotation is: (and (<= ULTIMATE.start_main_~k~0 ULTIMATE.start_main_~n~0) (<= (* 2 ULTIMATE.start_main_~i~0) ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~k~0)) [2018-10-22 15:47:46,243 INFO L428 ceAbstractionStarter]: At program point L33(lines 10 34) the Hoare annotation is: true [2018-10-22 15:47:46,243 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-10-22 15:47:46,243 INFO L425 ceAbstractionStarter]: For program point L21(lines 21 29) no Hoare annotation was computed. [2018-10-22 15:47:46,243 INFO L425 ceAbstractionStarter]: For program point L22-1(lines 22 24) no Hoare annotation was computed. [2018-10-22 15:47:46,243 INFO L421 ceAbstractionStarter]: At program point L22-3(lines 22 24) the Hoare annotation is: (let ((.cse0 (* 2 ULTIMATE.start_main_~i~0))) (and (<= .cse0 ULTIMATE.start_main_~k~0) (<= (+ ULTIMATE.start_main_~j~0 1) ULTIMATE.start_main_~n~0) (<= ULTIMATE.start_main_~k~0 ULTIMATE.start_main_~n~0) (<= .cse0 ULTIMATE.start_main_~j~0))) [2018-10-22 15:47:46,243 INFO L425 ceAbstractionStarter]: For program point L14(line 14) no Hoare annotation was computed. [2018-10-22 15:47:46,244 INFO L428 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2018-10-22 15:47:46,244 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2018-10-22 15:47:46,244 INFO L425 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-10-22 15:47:46,244 INFO L425 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-10-22 15:47:46,244 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-10-22 15:47:46,244 INFO L425 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2018-10-22 15:47:46,259 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 03:47:46 BoogieIcfgContainer [2018-10-22 15:47:46,259 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-22 15:47:46,260 INFO L168 Benchmark]: Toolchain (without parser) took 5574.81 ms. Allocated memory was 1.6 GB in the beginning and 2.3 GB in the end (delta: 761.8 MB). Free memory was 1.4 GB in the beginning and 2.0 GB in the end (delta: -538.4 MB). Peak memory consumption was 223.4 MB. Max. memory is 7.1 GB. [2018-10-22 15:47:46,261 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.6 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-22 15:47:46,262 INFO L168 Benchmark]: CACSL2BoogieTranslator took 258.38 ms. Allocated memory is still 1.6 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. [2018-10-22 15:47:46,263 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.41 ms. Allocated memory is still 1.6 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-22 15:47:46,263 INFO L168 Benchmark]: Boogie Preprocessor took 23.30 ms. Allocated memory is still 1.6 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-22 15:47:46,264 INFO L168 Benchmark]: RCFGBuilder took 555.61 ms. Allocated memory was 1.6 GB in the beginning and 2.3 GB in the end (delta: 761.8 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -811.8 MB). Peak memory consumption was 26.7 MB. Max. memory is 7.1 GB. [2018-10-22 15:47:46,265 INFO L168 Benchmark]: TraceAbstraction took 4694.93 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 262.9 MB). Peak memory consumption was 262.9 MB. Max. memory is 7.1 GB. [2018-10-22 15:47:46,270 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 1.6 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 258.38 ms. Allocated memory is still 1.6 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 38.41 ms. Allocated memory is still 1.6 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 23.30 ms. Allocated memory is still 1.6 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 555.61 ms. Allocated memory was 1.6 GB in the beginning and 2.3 GB in the end (delta: 761.8 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -811.8 MB). Peak memory consumption was 26.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4694.93 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 262.9 MB). Peak memory consumption was 262.9 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: 19]: Loop Invariant Derived loop invariant: ((k <= n && n <= j) && n <= k) || ((i <= 0 && k <= n) && n <= k) - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: (k <= n && 2 * i <= j) && n <= k - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: ((2 * i <= k && j + 1 <= n) && k <= n) && 2 * i <= j - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 28 locations, 1 error locations. SAFE Result, 4.6s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 2.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.5s HoareAnnotationTime, HoareTripleCheckerStatistics: 113 SDtfs, 133 SDslu, 393 SDs, 0 SdLazy, 457 SolverSat, 73 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 133 GetRequests, 83 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=63occurred 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, 46 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 31 PreInvPairs, 53 NumberOfFragments, 114 HoareAnnotationTreeSize, 31 FomulaSimplifications, 741 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 9 FomulaSimplificationsInter, 571 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 184 NumberOfCodeBlocks, 184 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 176 ConstructedInterpolants, 5 QuantifiedInterpolants, 10828 SizeOfPredicates, 9 NumberOfNonLiveVariables, 155 ConjunctsInSsa, 17 ConjunctsInUnsatCore, 8 InterpolantComputations, 4 PerfectInterpolantSequences, 32/40 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...