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_false-unreach-call_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-b6335f6 [2018-10-23 09:25:01,273 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 09:25:01,276 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 09:25:01,293 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 09:25:01,294 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 09:25:01,296 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 09:25:01,297 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 09:25:01,300 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 09:25:01,303 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 09:25:01,311 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 09:25:01,314 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 09:25:01,314 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 09:25:01,315 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 09:25:01,318 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 09:25:01,319 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 09:25:01,320 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 09:25:01,323 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 09:25:01,325 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 09:25:01,332 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 09:25:01,336 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 09:25:01,337 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 09:25:01,339 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 09:25:01,341 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-23 09:25:01,351 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 [2018-10-23 09:25:01,366 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 09:25:01,366 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 09:25:01,367 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 09:25:01,367 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-23 09:25:01,367 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-23 09:25:01,368 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-23 09:25:01,368 INFO L133 SettingsManager]: * Use SBE=true [2018-10-23 09:25:01,368 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 09:25:01,368 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 09:25:01,368 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 09:25:01,369 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 09:25:01,369 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 09:25:01,369 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 09:25:01,369 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 09:25:01,369 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 09:25:01,370 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 09:25:01,370 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 09:25:01,370 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 09:25:01,370 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 09:25:01,370 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 09:25:01,371 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 09:25:01,371 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 09:25:01,371 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 09:25:01,371 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-23 09:25:01,371 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 09:25:01,371 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 09:25:01,372 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 09:25:01,372 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 09:25:01,417 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 09:25:01,434 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 09:25:01,438 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 09:25:01,439 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 09:25:01,440 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 09:25:01,441 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/loops/sum01_bug02_false-unreach-call_true-termination.i [2018-10-23 09:25:01,524 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/379fa6d32/91104f3ed0f54160bd48d584fa2a7f75/FLAG05ef365a3 [2018-10-23 09:25:01,975 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 09:25:01,976 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/sum01_bug02_false-unreach-call_true-termination.i [2018-10-23 09:25:01,982 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/379fa6d32/91104f3ed0f54160bd48d584fa2a7f75/FLAG05ef365a3 [2018-10-23 09:25:01,998 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/379fa6d32/91104f3ed0f54160bd48d584fa2a7f75 [2018-10-23 09:25:02,011 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 09:25:02,013 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 09:25:02,014 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 09:25:02,014 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 09:25:02,018 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 09:25:02,019 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:25:02" (1/1) ... [2018-10-23 09:25:02,023 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7adbd51b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:25:02, skipping insertion in model container [2018-10-23 09:25:02,023 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:25:02" (1/1) ... [2018-10-23 09:25:02,034 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 09:25:02,058 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 09:25:02,274 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 09:25:02,278 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 09:25:02,294 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 09:25:02,311 INFO L193 MainTranslator]: Completed translation [2018-10-23 09:25:02,311 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:25:02 WrapperNode [2018-10-23 09:25:02,311 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 09:25:02,312 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 09:25:02,312 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 09:25:02,312 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 09:25:02,322 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:25:02" (1/1) ... [2018-10-23 09:25:02,326 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:25:02" (1/1) ... [2018-10-23 09:25:02,346 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 09:25:02,346 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 09:25:02,347 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 09:25:02,347 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 09:25:02,357 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:25:02" (1/1) ... [2018-10-23 09:25:02,357 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:25:02" (1/1) ... [2018-10-23 09:25:02,358 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:25:02" (1/1) ... [2018-10-23 09:25:02,358 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:25:02" (1/1) ... [2018-10-23 09:25:02,360 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:25:02" (1/1) ... [2018-10-23 09:25:02,365 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:25:02" (1/1) ... [2018-10-23 09:25:02,366 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:25:02" (1/1) ... [2018-10-23 09:25:02,368 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 09:25:02,368 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 09:25:02,368 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 09:25:02,368 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 09:25:02,370 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:25:02" (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 [2018-10-23 09:25:02,494 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 09:25:02,495 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 09:25:02,722 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 09:25:02,723 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:25:02 BoogieIcfgContainer [2018-10-23 09:25:02,723 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 09:25:02,725 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 09:25:02,728 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 09:25:02,735 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 09:25:02,735 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 09:25:02" (1/3) ... [2018-10-23 09:25:02,736 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@786107d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:25:02, skipping insertion in model container [2018-10-23 09:25:02,737 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:25:02" (2/3) ... [2018-10-23 09:25:02,737 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@786107d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:25:02, skipping insertion in model container [2018-10-23 09:25:02,737 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:25:02" (3/3) ... [2018-10-23 09:25:02,739 INFO L112 eAbstractionObserver]: Analyzing ICFG sum01_bug02_false-unreach-call_true-termination.i [2018-10-23 09:25:02,771 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 09:25:02,794 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 09:25:02,834 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 09:25:02,891 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-23 09:25:02,892 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 09:25:02,892 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 09:25:02,892 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 09:25:02,892 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 09:25:02,893 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 09:25:02,893 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 09:25:02,893 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 09:25:02,893 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 09:25:02,907 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2018-10-23 09:25:02,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-10-23 09:25:02,913 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 09:25:02,914 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2018-10-23 09:25:02,917 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 09:25:02,923 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 09:25:02,923 INFO L82 PathProgramCache]: Analyzing trace with hash 890030055, now seen corresponding path program 1 times [2018-10-23 09:25:02,925 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 09:25:02,926 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 09:25:02,976 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:25:02,976 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 09:25:02,977 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:25:03,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 09:25:03,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 09:25:03,044 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 09:25:03,044 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-23 09:25:03,048 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-23 09:25:03,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-23 09:25:03,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-23 09:25:03,064 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 2 states. [2018-10-23 09:25:03,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 09:25:03,080 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2018-10-23 09:25:03,080 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-23 09:25:03,081 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2018-10-23 09:25:03,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 09:25:03,090 INFO L225 Difference]: With dead ends: 23 [2018-10-23 09:25:03,091 INFO L226 Difference]: Without dead ends: 11 [2018-10-23 09:25:03,094 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 [2018-10-23 09:25:03,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2018-10-23 09:25:03,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-10-23 09:25:03,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-10-23 09:25:03,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2018-10-23 09:25:03,126 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 6 [2018-10-23 09:25:03,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 09:25:03,126 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2018-10-23 09:25:03,126 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-23 09:25:03,127 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2018-10-23 09:25:03,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-10-23 09:25:03,127 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 09:25:03,127 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-10-23 09:25:03,128 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 09:25:03,128 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 09:25:03,128 INFO L82 PathProgramCache]: Analyzing trace with hash 1805901812, now seen corresponding path program 1 times [2018-10-23 09:25:03,128 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 09:25:03,129 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 09:25:03,130 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:25:03,130 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 09:25:03,130 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:25:03,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 09:25:03,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 09:25:03,239 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 09:25:03,239 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 09:25:03,241 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 09:25:03,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 09:25:03,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-23 09:25:03,243 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand 4 states. [2018-10-23 09:25:03,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 09:25:03,311 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2018-10-23 09:25:03,312 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 09:25:03,312 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2018-10-23 09:25:03,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 09:25:03,313 INFO L225 Difference]: With dead ends: 20 [2018-10-23 09:25:03,313 INFO L226 Difference]: Without dead ends: 16 [2018-10-23 09:25:03,314 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-23 09:25:03,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-10-23 09:25:03,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-10-23 09:25:03,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-10-23 09:25:03,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2018-10-23 09:25:03,319 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 7 [2018-10-23 09:25:03,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 09:25:03,319 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2018-10-23 09:25:03,320 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 09:25:03,320 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2018-10-23 09:25:03,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-10-23 09:25:03,320 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 09:25:03,321 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 09:25:03,321 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 09:25:03,321 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 09:25:03,322 INFO L82 PathProgramCache]: Analyzing trace with hash -1175427889, now seen corresponding path program 1 times [2018-10-23 09:25:03,322 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 09:25:03,322 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 09:25:03,323 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:25:03,323 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 09:25:03,324 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:25:03,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 09:25:03,751 WARN L179 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 14 [2018-10-23 09:25:03,980 WARN L179 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 9 [2018-10-23 09:25:04,006 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 09:25:04,007 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 09:25:04,009 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 [2018-10-23 09:25:04,022 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 09:25:04,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 09:25:04,041 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 09:25:04,507 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 09:25:04,529 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-23 09:25:04,530 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2018-10-23 09:25:04,530 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-23 09:25:04,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-23 09:25:04,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2018-10-23 09:25:04,531 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 13 states. [2018-10-23 09:25:05,244 WARN L179 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 15 [2018-10-23 09:25:05,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 09:25:05,363 INFO L93 Difference]: Finished difference Result 41 states and 47 transitions. [2018-10-23 09:25:05,366 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-23 09:25:05,366 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2018-10-23 09:25:05,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 09:25:05,372 INFO L225 Difference]: With dead ends: 41 [2018-10-23 09:25:05,372 INFO L226 Difference]: Without dead ends: 35 [2018-10-23 09:25:05,373 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2018-10-23 09:25:05,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-10-23 09:25:05,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 28. [2018-10-23 09:25:05,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-10-23 09:25:05,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2018-10-23 09:25:05,389 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 12 [2018-10-23 09:25:05,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 09:25:05,391 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2018-10-23 09:25:05,392 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-23 09:25:05,392 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2018-10-23 09:25:05,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-23 09:25:05,394 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 09:25:05,394 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 09:25:05,394 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 09:25:05,394 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 09:25:05,395 INFO L82 PathProgramCache]: Analyzing trace with hash 227655126, now seen corresponding path program 1 times [2018-10-23 09:25:05,395 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 09:25:05,395 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 09:25:05,396 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:25:05,396 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 09:25:05,396 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:25:05,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 09:25:05,455 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-23 09:25:05,455 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 09:25:05,456 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 09:25:05,456 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 09:25:05,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 09:25:05,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 09:25:05,457 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 3 states. [2018-10-23 09:25:05,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 09:25:05,479 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions. [2018-10-23 09:25:05,480 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 09:25:05,480 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2018-10-23 09:25:05,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 09:25:05,481 INFO L225 Difference]: With dead ends: 37 [2018-10-23 09:25:05,481 INFO L226 Difference]: Without dead ends: 23 [2018-10-23 09:25:05,482 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 09:25:05,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-10-23 09:25:05,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-10-23 09:25:05,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-10-23 09:25:05,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2018-10-23 09:25:05,486 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 17 [2018-10-23 09:25:05,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 09:25:05,487 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2018-10-23 09:25:05,487 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 09:25:05,487 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2018-10-23 09:25:05,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-23 09:25:05,488 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 09:25:05,488 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 09:25:05,488 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 09:25:05,488 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 09:25:05,489 INFO L82 PathProgramCache]: Analyzing trace with hash 5114514, now seen corresponding path program 2 times [2018-10-23 09:25:05,489 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 09:25:05,489 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 09:25:05,490 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:25:05,490 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 09:25:05,491 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:25:05,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 09:25:05,570 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 09:25:05,571 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 09:25:05,571 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 [2018-10-23 09:25:05,579 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-23 09:25:05,596 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-23 09:25:05,596 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-23 09:25:05,599 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 09:25:05,644 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 09:25:05,665 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-23 09:25:05,665 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2018-10-23 09:25:05,666 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-23 09:25:05,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-23 09:25:05,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2018-10-23 09:25:05,667 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 8 states. [2018-10-23 09:25:05,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 09:25:05,735 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2018-10-23 09:25:05,736 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-23 09:25:05,736 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 17 [2018-10-23 09:25:05,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 09:25:05,737 INFO L225 Difference]: With dead ends: 32 [2018-10-23 09:25:05,737 INFO L226 Difference]: Without dead ends: 23 [2018-10-23 09:25:05,738 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2018-10-23 09:25:05,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-10-23 09:25:05,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-10-23 09:25:05,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-10-23 09:25:05,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2018-10-23 09:25:05,743 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 17 [2018-10-23 09:25:05,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 09:25:05,743 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2018-10-23 09:25:05,743 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-23 09:25:05,743 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2018-10-23 09:25:05,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-10-23 09:25:05,744 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 09:25:05,744 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 09:25:05,745 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 09:25:05,745 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 09:25:05,745 INFO L82 PathProgramCache]: Analyzing trace with hash 728398253, now seen corresponding path program 3 times [2018-10-23 09:25:05,745 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 09:25:05,745 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 09:25:05,746 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:25:05,746 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-23 09:25:05,746 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:25:05,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 09:25:05,852 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 10 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 09:25:05,853 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 09:25:05,853 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 [2018-10-23 09:25:05,867 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-23 09:25:05,889 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-10-23 09:25:05,890 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-23 09:25:05,892 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 09:25:06,091 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 10 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 09:25:06,114 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-23 09:25:06,114 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2018-10-23 09:25:06,114 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-23 09:25:06,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-23 09:25:06,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=76, Unknown=0, NotChecked=0, Total=132 [2018-10-23 09:25:06,115 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 12 states. [2018-10-23 09:25:06,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 09:25:06,189 INFO L93 Difference]: Finished difference Result 34 states and 37 transitions. [2018-10-23 09:25:06,190 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 09:25:06,190 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 22 [2018-10-23 09:25:06,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 09:25:06,192 INFO L225 Difference]: With dead ends: 34 [2018-10-23 09:25:06,192 INFO L226 Difference]: Without dead ends: 25 [2018-10-23 09:25:06,193 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=76, Unknown=0, NotChecked=0, Total=132 [2018-10-23 09:25:06,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-10-23 09:25:06,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2018-10-23 09:25:06,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-10-23 09:25:06,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2018-10-23 09:25:06,198 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 22 [2018-10-23 09:25:06,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 09:25:06,198 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2018-10-23 09:25:06,198 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-23 09:25:06,198 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2018-10-23 09:25:06,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-10-23 09:25:06,199 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 09:25:06,199 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2018-10-23 09:25:06,200 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 09:25:06,200 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 09:25:06,200 INFO L82 PathProgramCache]: Analyzing trace with hash 1537744879, now seen corresponding path program 2 times [2018-10-23 09:25:06,200 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 09:25:06,201 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 09:25:06,201 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:25:06,202 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-23 09:25:06,202 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:25:06,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 09:25:06,510 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-10-23 09:25:06,511 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 09:25:06,511 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 09:25:06,518 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-23 09:25:06,540 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-23 09:25:06,540 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-23 09:25:06,543 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 09:25:06,928 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 09:25:06,949 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-23 09:25:06,949 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12] total 18 [2018-10-23 09:25:06,950 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-23 09:25:06,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-23 09:25:06,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2018-10-23 09:25:06,951 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand 18 states. [2018-10-23 09:25:07,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 09:25:07,790 INFO L93 Difference]: Finished difference Result 44 states and 48 transitions. [2018-10-23 09:25:07,792 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-23 09:25:07,792 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 22 [2018-10-23 09:25:07,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 09:25:07,793 INFO L225 Difference]: With dead ends: 44 [2018-10-23 09:25:07,793 INFO L226 Difference]: Without dead ends: 38 [2018-10-23 09:25:07,794 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=172, Invalid=884, Unknown=0, NotChecked=0, Total=1056 [2018-10-23 09:25:07,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-10-23 09:25:07,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 29. [2018-10-23 09:25:07,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-10-23 09:25:07,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2018-10-23 09:25:07,803 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 22 [2018-10-23 09:25:07,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 09:25:07,806 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2018-10-23 09:25:07,806 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-10-23 09:25:07,806 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2018-10-23 09:25:07,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-10-23 09:25:07,807 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 09:25:07,807 INFO L375 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 09:25:07,808 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 09:25:07,808 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 09:25:07,808 INFO L82 PathProgramCache]: Analyzing trace with hash 701383538, now seen corresponding path program 4 times [2018-10-23 09:25:07,808 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 09:25:07,809 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 09:25:07,809 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:25:07,811 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-23 09:25:07,811 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:25:07,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 09:25:08,137 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 14 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 09:25:08,138 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 09:25:08,138 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 09:25:08,147 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-23 09:25:08,159 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-23 09:25:08,159 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-23 09:25:08,161 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 09:25:08,251 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 14 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 09:25:08,272 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-23 09:25:08,272 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2018-10-23 09:25:08,272 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-23 09:25:08,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-23 09:25:08,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=141, Unknown=0, NotChecked=0, Total=240 [2018-10-23 09:25:08,273 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand 16 states. [2018-10-23 09:25:08,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 09:25:08,374 INFO L93 Difference]: Finished difference Result 44 states and 48 transitions. [2018-10-23 09:25:08,376 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-23 09:25:08,376 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 27 [2018-10-23 09:25:08,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 09:25:08,377 INFO L225 Difference]: With dead ends: 44 [2018-10-23 09:25:08,377 INFO L226 Difference]: Without dead ends: 35 [2018-10-23 09:25:08,377 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=99, Invalid=141, Unknown=0, NotChecked=0, Total=240 [2018-10-23 09:25:08,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-10-23 09:25:08,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2018-10-23 09:25:08,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-10-23 09:25:08,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 36 transitions. [2018-10-23 09:25:08,383 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 36 transitions. Word has length 27 [2018-10-23 09:25:08,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 09:25:08,383 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 36 transitions. [2018-10-23 09:25:08,383 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-10-23 09:25:08,383 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 36 transitions. [2018-10-23 09:25:08,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-10-23 09:25:08,384 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 09:25:08,384 INFO L375 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 09:25:08,385 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 09:25:08,385 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 09:25:08,385 INFO L82 PathProgramCache]: Analyzing trace with hash -7680819, now seen corresponding path program 5 times [2018-10-23 09:25:08,385 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 09:25:08,386 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 09:25:08,386 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:25:08,387 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-23 09:25:08,387 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:25:08,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 09:25:08,547 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 18 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 09:25:08,548 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 09:25:08,548 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 09:25:08,556 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-23 09:25:08,580 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-10-23 09:25:08,580 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-23 09:25:08,582 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 09:25:08,754 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 18 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 09:25:08,784 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-23 09:25:08,784 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2018-10-23 09:25:08,785 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-23 09:25:08,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-23 09:25:08,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=226, Unknown=0, NotChecked=0, Total=380 [2018-10-23 09:25:08,786 INFO L87 Difference]: Start difference. First operand 34 states and 36 transitions. Second operand 20 states. [2018-10-23 09:25:08,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 09:25:08,892 INFO L93 Difference]: Finished difference Result 50 states and 54 transitions. [2018-10-23 09:25:08,893 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-23 09:25:08,893 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 32 [2018-10-23 09:25:08,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 09:25:08,894 INFO L225 Difference]: With dead ends: 50 [2018-10-23 09:25:08,894 INFO L226 Difference]: Without dead ends: 41 [2018-10-23 09:25:08,895 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=154, Invalid=226, Unknown=0, NotChecked=0, Total=380 [2018-10-23 09:25:08,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-10-23 09:25:08,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2018-10-23 09:25:08,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-10-23 09:25:08,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2018-10-23 09:25:08,900 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 32 [2018-10-23 09:25:08,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 09:25:08,901 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2018-10-23 09:25:08,901 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-10-23 09:25:08,901 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2018-10-23 09:25:08,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-10-23 09:25:08,902 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 09:25:08,902 INFO L375 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 09:25:08,902 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 09:25:08,903 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 09:25:08,903 INFO L82 PathProgramCache]: Analyzing trace with hash -1031478190, now seen corresponding path program 6 times [2018-10-23 09:25:08,903 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 09:25:08,903 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 09:25:08,904 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:25:08,904 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-23 09:25:08,905 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:25:08,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-23 09:25:08,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-23 09:25:08,951 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-10-23 09:25:08,985 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 09:25:08 BoogieIcfgContainer [2018-10-23 09:25:08,985 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 09:25:08,986 INFO L168 Benchmark]: Toolchain (without parser) took 6974.38 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 754.5 MB). Free memory was 1.4 GB in the beginning and 1.8 GB in the end (delta: -390.9 MB). Peak memory consumption was 363.6 MB. Max. memory is 7.1 GB. [2018-10-23 09:25:08,987 INFO L168 Benchmark]: CDTParser took 0.23 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. [2018-10-23 09:25:08,988 INFO L168 Benchmark]: CACSL2BoogieTranslator took 298.14 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. [2018-10-23 09:25:08,988 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.95 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. [2018-10-23 09:25:08,989 INFO L168 Benchmark]: Boogie Preprocessor took 21.36 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. [2018-10-23 09:25:08,989 INFO L168 Benchmark]: RCFGBuilder took 355.52 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 754.5 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -795.1 MB). Peak memory consumption was 26.7 MB. Max. memory is 7.1 GB. [2018-10-23 09:25:08,990 INFO L168 Benchmark]: TraceAbstraction took 6260.58 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.8 GB in the end (delta: 393.7 MB). Peak memory consumption was 393.7 MB. Max. memory is 7.1 GB. [2018-10-23 09:25:08,995 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 298.14 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 33.95 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 21.36 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 355.52 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 754.5 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -795.1 MB). Peak memory consumption was 26.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 6260.58 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.8 GB in the end (delta: 393.7 MB). Peak memory consumption was 393.7 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, j=10, n=__VERIFIER_nondet_uint(), sn=0; [L12] int i, j=10, n=__VERIFIER_nondet_uint(), sn=0; [L13] i=1 [L13] COND TRUE i<=n [L14] COND TRUE i