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/loops/sum01_bug02_sum01_bug02_base.case_false-unreach-call_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8c3fbe1 [2018-10-22 15:36:05,261 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-22 15:36:05,264 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-22 15:36:05,282 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-22 15:36:05,282 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-22 15:36:05,283 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-22 15:36:05,286 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-22 15:36:05,288 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-22 15:36:05,290 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-22 15:36:05,294 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-22 15:36:05,295 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-22 15:36:05,295 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-22 15:36:05,298 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-22 15:36:05,299 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-22 15:36:05,308 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-22 15:36:05,308 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-22 15:36:05,309 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-22 15:36:05,315 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-22 15:36:05,319 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-22 15:36:05,323 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-22 15:36:05,324 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-22 15:36:05,325 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-22 15:36:05,328 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-22 15:36:05,340 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 15:36:05,355 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-22 15:36:05,356 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-22 15:36:05,358 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-22 15:36:05,358 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-22 15:36:05,359 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-22 15:36:05,359 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-22 15:36:05,359 INFO L133 SettingsManager]: * Use SBE=true [2018-10-22 15:36:05,359 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-22 15:36:05,360 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-22 15:36:05,361 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-22 15:36:05,361 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-22 15:36:05,361 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-22 15:36:05,361 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-22 15:36:05,362 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-22 15:36:05,362 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-22 15:36:05,362 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-22 15:36:05,362 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-22 15:36:05,363 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-22 15:36:05,364 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-22 15:36:05,364 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-22 15:36:05,364 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-22 15:36:05,364 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-22 15:36:05,364 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-22 15:36:05,365 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-22 15:36:05,365 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-22 15:36:05,365 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-22 15:36:05,365 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-22 15:36:05,365 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-22 15:36:05,429 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-22 15:36:05,449 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-22 15:36:05,453 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-22 15:36:05,455 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-22 15:36:05,455 INFO L276 PluginConnector]: CDTParser initialized [2018-10-22 15:36:05,456 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/loops/sum01_bug02_sum01_bug02_base.case_false-unreach-call_true-termination.i [2018-10-22 15:36:05,524 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/da880d630/7742a85808b8447198e99f8ba434b7c9/FLAGfbdcca7b4 [2018-10-22 15:36:06,027 INFO L298 CDTParser]: Found 1 translation units. [2018-10-22 15:36:06,028 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/sum01_bug02_sum01_bug02_base.case_false-unreach-call_true-termination.i [2018-10-22 15:36:06,034 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/da880d630/7742a85808b8447198e99f8ba434b7c9/FLAGfbdcca7b4 [2018-10-22 15:36:06,049 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/da880d630/7742a85808b8447198e99f8ba434b7c9 [2018-10-22 15:36:06,060 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-22 15:36:06,062 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-22 15:36:06,063 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-22 15:36:06,063 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-22 15:36:06,067 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-22 15:36:06,068 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 03:36:06" (1/1) ... [2018-10-22 15:36:06,071 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d3816c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:36:06, skipping insertion in model container [2018-10-22 15:36:06,071 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 03:36:06" (1/1) ... [2018-10-22 15:36:06,082 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-22 15:36:06,103 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-22 15:36:06,273 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-22 15:36:06,277 INFO L189 MainTranslator]: Completed pre-run [2018-10-22 15:36:06,294 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-22 15:36:06,307 INFO L193 MainTranslator]: Completed translation [2018-10-22 15:36:06,308 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:36:06 WrapperNode [2018-10-22 15:36:06,308 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-22 15:36:06,309 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-22 15:36:06,309 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-22 15:36:06,309 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-22 15:36:06,320 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:36:06" (1/1) ... [2018-10-22 15:36:06,326 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:36:06" (1/1) ... [2018-10-22 15:36:06,346 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-22 15:36:06,347 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-22 15:36:06,347 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-22 15:36:06,347 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-22 15:36:06,358 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:36:06" (1/1) ... [2018-10-22 15:36:06,358 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:36:06" (1/1) ... [2018-10-22 15:36:06,359 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:36:06" (1/1) ... [2018-10-22 15:36:06,359 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:36:06" (1/1) ... [2018-10-22 15:36:06,361 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:36:06" (1/1) ... [2018-10-22 15:36:06,366 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:36:06" (1/1) ... [2018-10-22 15:36:06,367 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:36:06" (1/1) ... [2018-10-22 15:36:06,368 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-22 15:36:06,369 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-22 15:36:06,369 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-22 15:36:06,369 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-22 15:36:06,372 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:36:06" (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 15:36:06,495 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-22 15:36:06,496 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-22 15:36:06,657 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-22 15:36:06,658 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 03:36:06 BoogieIcfgContainer [2018-10-22 15:36:06,658 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-22 15:36:06,659 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-22 15:36:06,659 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-22 15:36:06,663 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-22 15:36:06,663 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 03:36:06" (1/3) ... [2018-10-22 15:36:06,664 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ca0a74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 03:36:06, skipping insertion in model container [2018-10-22 15:36:06,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:36:06" (2/3) ... [2018-10-22 15:36:06,665 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ca0a74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 03:36:06, skipping insertion in model container [2018-10-22 15:36:06,665 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 03:36:06" (3/3) ... [2018-10-22 15:36:06,667 INFO L112 eAbstractionObserver]: Analyzing ICFG sum01_bug02_sum01_bug02_base.case_false-unreach-call_true-termination.i [2018-10-22 15:36:06,677 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-22 15:36:06,686 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-22 15:36:06,703 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-22 15:36:06,738 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-22 15:36:06,739 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-22 15:36:06,739 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-22 15:36:06,739 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-22 15:36:06,739 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-22 15:36:06,739 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-22 15:36:06,739 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-22 15:36:06,740 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-22 15:36:06,740 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-22 15:36:06,754 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2018-10-22 15:36:06,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-10-22 15:36:06,761 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 15:36:06,762 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2018-10-22 15:36:06,764 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 15:36:06,770 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 15:36:06,771 INFO L82 PathProgramCache]: Analyzing trace with hash 889968487, now seen corresponding path program 1 times [2018-10-22 15:36:06,773 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-22 15:36:06,774 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-22 15:36:06,823 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:36:06,823 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 15:36:06,824 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:36:06,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:36:06,889 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 15:36:06,892 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-22 15:36:06,892 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-22 15:36:06,896 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-22 15:36:06,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-22 15:36:06,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-22 15:36:06,913 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 2 states. [2018-10-22 15:36:06,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 15:36:06,929 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2018-10-22 15:36:06,929 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-22 15:36:06,931 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2018-10-22 15:36:06,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 15:36:06,940 INFO L225 Difference]: With dead ends: 22 [2018-10-22 15:36:06,940 INFO L226 Difference]: Without dead ends: 10 [2018-10-22 15:36:06,944 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-22 15:36:06,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2018-10-22 15:36:06,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-10-22 15:36:06,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2018-10-22 15:36:06,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2018-10-22 15:36:06,982 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 6 [2018-10-22 15:36:06,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 15:36:06,982 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2018-10-22 15:36:06,983 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-22 15:36:06,983 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2018-10-22 15:36:06,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-10-22 15:36:06,983 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 15:36:06,984 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-10-22 15:36:06,984 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 15:36:06,984 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 15:36:06,985 INFO L82 PathProgramCache]: Analyzing trace with hash 1805899826, now seen corresponding path program 1 times [2018-10-22 15:36:06,985 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-22 15:36:06,985 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-22 15:36:06,986 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:36:06,986 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 15:36:06,986 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:36:06,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:36:07,162 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 15:36:07,162 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-22 15:36:07,163 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-22 15:36:07,164 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-22 15:36:07,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-22 15:36:07,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-22 15:36:07,170 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand 4 states. [2018-10-22 15:36:07,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 15:36:07,404 INFO L93 Difference]: Finished difference Result 16 states and 17 transitions. [2018-10-22 15:36:07,405 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-22 15:36:07,405 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2018-10-22 15:36:07,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 15:36:07,406 INFO L225 Difference]: With dead ends: 16 [2018-10-22 15:36:07,406 INFO L226 Difference]: Without dead ends: 12 [2018-10-22 15:36:07,407 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-22 15:36:07,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-10-22 15:36:07,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-10-22 15:36:07,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-10-22 15:36:07,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2018-10-22 15:36:07,411 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 7 [2018-10-22 15:36:07,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 15:36:07,411 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2018-10-22 15:36:07,412 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-22 15:36:07,412 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2018-10-22 15:36:07,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-10-22 15:36:07,412 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 15:36:07,413 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 15:36:07,413 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 15:36:07,413 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 15:36:07,414 INFO L82 PathProgramCache]: Analyzing trace with hash 1308620939, now seen corresponding path program 1 times [2018-10-22 15:36:07,414 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-22 15:36:07,414 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-22 15:36:07,415 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:36:07,415 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 15:36:07,415 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:36:07,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:36:07,893 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 15:36:07,893 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-22 15:36:07,893 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 15:36:07,914 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 15:36:07,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:36:07,947 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-22 15:36:08,266 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 15:36:08,288 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-22 15:36:08,289 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2018-10-22 15:36:08,289 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-22 15:36:08,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-22 15:36:08,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2018-10-22 15:36:08,291 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. Second operand 11 states. [2018-10-22 15:36:08,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 15:36:08,917 INFO L93 Difference]: Finished difference Result 32 states and 38 transitions. [2018-10-22 15:36:08,918 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-22 15:36:08,919 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2018-10-22 15:36:08,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 15:36:08,919 INFO L225 Difference]: With dead ends: 32 [2018-10-22 15:36:08,920 INFO L226 Difference]: Without dead ends: 20 [2018-10-22 15:36:08,921 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2018-10-22 15:36:08,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-10-22 15:36:08,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2018-10-22 15:36:08,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-10-22 15:36:08,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2018-10-22 15:36:08,928 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 11 [2018-10-22 15:36:08,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 15:36:08,930 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2018-10-22 15:36:08,930 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-22 15:36:08,930 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2018-10-22 15:36:08,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-22 15:36:08,931 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 15:36:08,931 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 15:36:08,933 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 15:36:08,933 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 15:36:08,934 INFO L82 PathProgramCache]: Analyzing trace with hash 6671842, now seen corresponding path program 1 times [2018-10-22 15:36:08,934 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-22 15:36:08,934 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-22 15:36:08,935 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:36:08,935 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 15:36:08,935 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:36:08,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:36:08,994 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 15:36:08,994 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-22 15:36:08,994 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 15:36:09,010 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 15:36:09,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:36:09,038 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-22 15:36:09,042 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 15:36:09,071 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-22 15:36:09,071 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-10-22 15:36:09,072 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-22 15:36:09,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-22 15:36:09,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-22 15:36:09,072 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand 4 states. [2018-10-22 15:36:09,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 15:36:09,233 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2018-10-22 15:36:09,233 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-22 15:36:09,234 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2018-10-22 15:36:09,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 15:36:09,234 INFO L225 Difference]: With dead ends: 28 [2018-10-22 15:36:09,236 INFO L226 Difference]: Without dead ends: 20 [2018-10-22 15:36:09,236 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-22 15:36:09,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-10-22 15:36:09,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2018-10-22 15:36:09,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-10-22 15:36:09,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2018-10-22 15:36:09,245 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 15 [2018-10-22 15:36:09,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 15:36:09,246 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2018-10-22 15:36:09,246 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-22 15:36:09,246 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2018-10-22 15:36:09,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-22 15:36:09,247 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 15:36:09,247 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2018-10-22 15:36:09,247 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 15:36:09,248 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 15:36:09,249 INFO L82 PathProgramCache]: Analyzing trace with hash 1245248445, now seen corresponding path program 2 times [2018-10-22 15:36:09,249 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-22 15:36:09,249 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-22 15:36:09,250 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:36:09,250 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 15:36:09,250 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:36:09,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:36:09,605 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-10-22 15:36:09,605 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-22 15:36:09,605 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-22 15:36:09,617 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-22 15:36:09,653 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-22 15:36:09,653 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-22 15:36:09,656 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-22 15:36:09,951 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 15:36:09,974 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-22 15:36:09,974 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11] total 16 [2018-10-22 15:36:09,976 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-22 15:36:09,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-22 15:36:09,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2018-10-22 15:36:09,977 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 16 states. [2018-10-22 15:36:10,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 15:36:10,610 INFO L93 Difference]: Finished difference Result 40 states and 46 transitions. [2018-10-22 15:36:10,610 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-22 15:36:10,610 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 19 [2018-10-22 15:36:10,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 15:36:10,612 INFO L225 Difference]: With dead ends: 40 [2018-10-22 15:36:10,612 INFO L226 Difference]: Without dead ends: 28 [2018-10-22 15:36:10,614 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=128, Invalid=574, Unknown=0, NotChecked=0, Total=702 [2018-10-22 15:36:10,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-10-22 15:36:10,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 25. [2018-10-22 15:36:10,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-10-22 15:36:10,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2018-10-22 15:36:10,619 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 19 [2018-10-22 15:36:10,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 15:36:10,620 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2018-10-22 15:36:10,620 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-10-22 15:36:10,620 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2018-10-22 15:36:10,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-10-22 15:36:10,621 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 15:36:10,621 INFO L375 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 15:36:10,621 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 15:36:10,622 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 15:36:10,622 INFO L82 PathProgramCache]: Analyzing trace with hash 1696983060, now seen corresponding path program 2 times [2018-10-22 15:36:10,622 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-22 15:36:10,622 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-22 15:36:10,623 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:36:10,623 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-22 15:36:10,623 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:36:10,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-22 15:36:10,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-22 15:36:10,665 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-10-22 15:36:10,689 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 03:36:10 BoogieIcfgContainer [2018-10-22 15:36:10,689 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-22 15:36:10,690 INFO L168 Benchmark]: Toolchain (without parser) took 4629.24 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 749.2 MB). Free memory was 1.4 GB in the beginning and 2.0 GB in the end (delta: -588.2 MB). Peak memory consumption was 161.0 MB. Max. memory is 7.1 GB. [2018-10-22 15:36:10,692 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. [2018-10-22 15:36:10,693 INFO L168 Benchmark]: CACSL2BoogieTranslator took 245.16 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. [2018-10-22 15:36:10,694 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.82 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. [2018-10-22 15:36:10,694 INFO L168 Benchmark]: Boogie Preprocessor took 21.71 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. [2018-10-22 15:36:10,695 INFO L168 Benchmark]: RCFGBuilder took 289.50 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 749.2 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -800.2 MB). Peak memory consumption was 26.7 MB. Max. memory is 7.1 GB. [2018-10-22 15:36:10,696 INFO L168 Benchmark]: TraceAbstraction took 4029.73 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: 201.4 MB). Peak memory consumption was 201.4 MB. Max. memory is 7.1 GB. [2018-10-22 15:36:10,701 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 245.16 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 37.82 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 21.71 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 289.50 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 749.2 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -800.2 MB). Peak memory consumption was 26.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4029.73 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: 201.4 MB). Peak memory consumption was 201.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 5]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L12] int i, n=__VERIFIER_nondet_uint(), sn=0; [L12] int i, n=__VERIFIER_nondet_uint(), sn=0; [L13] i=1 [L13] COND TRUE i<=n [L14] sn = sn + (2) [L15] COND FALSE !(i==4) [L13] i++ [L13] COND TRUE i<=n [L14] sn = sn + (2) [L15] COND FALSE !(i==4) [L13] i++ [L13] COND TRUE i<=n [L14] sn = sn + (2) [L15] COND FALSE !(i==4) [L13] i++ [L13] COND TRUE i<=n [L14] sn = sn + (2) [L15] COND TRUE i==4 [L15] sn=-10 [L13] i++ [L13] COND FALSE !(i<=n) [L17] CALL __VERIFIER_assert(sn==n*(2) || sn == 0) [L4] COND TRUE !(cond) [L5] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. UNSAFE Result, 3.9s OverallTime, 6 OverallIterations, 5 TraceHistogramMax, 1.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 46 SDtfs, 28 SDslu, 119 SDs, 0 SdLazy, 233 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 86 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 2.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=5, 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, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 126 NumberOfCodeBlocks, 126 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 95 ConstructedInterpolants, 0 QuantifiedInterpolants, 9289 SizeOfPredicates, 11 NumberOfNonLiveVariables, 99 ConjunctsInSsa, 41 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 18/56 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...