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/eca-rers2012/Problem14_label51_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 16:31:15,193 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 16:31:15,195 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 16:31:15,208 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 16:31:15,209 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 16:31:15,210 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 16:31:15,211 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 16:31:15,213 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 16:31:15,215 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 16:31:15,215 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 16:31:15,216 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 16:31:15,217 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 16:31:15,218 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 16:31:15,219 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 16:31:15,220 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 16:31:15,220 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 16:31:15,221 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 16:31:15,226 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 16:31:15,234 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 16:31:15,235 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 16:31:15,238 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 16:31:15,241 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 16:31:15,246 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 16:31:15,263 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-24 16:31:15,294 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 16:31:15,294 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 16:31:15,295 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 16:31:15,295 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 16:31:15,296 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 16:31:15,296 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 16:31:15,296 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 16:31:15,297 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 16:31:15,297 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 16:31:15,297 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 16:31:15,297 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 16:31:15,297 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 16:31:15,298 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 16:31:15,298 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 16:31:15,298 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 16:31:15,298 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 16:31:15,299 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 16:31:15,300 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 16:31:15,300 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 16:31:15,300 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 16:31:15,301 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 16:31:15,301 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 16:31:15,301 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 16:31:15,301 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 16:31:15,302 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 16:31:15,302 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 16:31:15,302 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 16:31:15,302 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 16:31:15,358 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 16:31:15,375 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 16:31:15,379 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 16:31:15,380 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 16:31:15,381 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 16:31:15,382 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label51_true-unreach-call_false-termination.c [2018-10-24 16:31:15,447 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c58497d13/bc9e08a0be7c49bd8bdab35eb093a463/FLAG842cfb638 [2018-10-24 16:31:16,102 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 16:31:16,104 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label51_true-unreach-call_false-termination.c [2018-10-24 16:31:16,121 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c58497d13/bc9e08a0be7c49bd8bdab35eb093a463/FLAG842cfb638 [2018-10-24 16:31:16,145 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c58497d13/bc9e08a0be7c49bd8bdab35eb093a463 [2018-10-24 16:31:16,158 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 16:31:16,160 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 16:31:16,164 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 16:31:16,164 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 16:31:16,168 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 16:31:16,169 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 04:31:16" (1/1) ... [2018-10-24 16:31:16,172 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@534a04b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:31:16, skipping insertion in model container [2018-10-24 16:31:16,173 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 04:31:16" (1/1) ... [2018-10-24 16:31:16,184 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 16:31:16,256 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 16:31:16,780 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 16:31:16,785 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 16:31:16,959 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 16:31:16,980 INFO L193 MainTranslator]: Completed translation [2018-10-24 16:31:16,980 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:31:16 WrapperNode [2018-10-24 16:31:16,981 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 16:31:16,982 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 16:31:16,982 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 16:31:16,983 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 16:31:16,993 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:31:16" (1/1) ... [2018-10-24 16:31:17,037 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:31:16" (1/1) ... [2018-10-24 16:31:17,261 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 16:31:17,262 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 16:31:17,262 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 16:31:17,262 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 16:31:17,275 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:31:16" (1/1) ... [2018-10-24 16:31:17,276 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:31:16" (1/1) ... [2018-10-24 16:31:17,290 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:31:16" (1/1) ... [2018-10-24 16:31:17,291 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:31:16" (1/1) ... [2018-10-24 16:31:17,344 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:31:16" (1/1) ... [2018-10-24 16:31:17,368 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:31:16" (1/1) ... [2018-10-24 16:31:17,382 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:31:16" (1/1) ... [2018-10-24 16:31:17,389 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 16:31:17,390 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 16:31:17,390 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 16:31:17,390 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 16:31:17,391 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:31:16" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 16:31:17,447 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-24 16:31:17,447 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 16:31:17,448 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 16:31:21,012 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 16:31:21,015 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 04:31:21 BoogieIcfgContainer [2018-10-24 16:31:21,016 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 16:31:21,017 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 16:31:21,017 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 16:31:21,020 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 16:31:21,020 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 04:31:16" (1/3) ... [2018-10-24 16:31:21,021 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74cc745c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 04:31:21, skipping insertion in model container [2018-10-24 16:31:21,021 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:31:16" (2/3) ... [2018-10-24 16:31:21,022 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74cc745c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 04:31:21, skipping insertion in model container [2018-10-24 16:31:21,022 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 04:31:21" (3/3) ... [2018-10-24 16:31:21,024 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label51_true-unreach-call_false-termination.c [2018-10-24 16:31:21,035 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 16:31:21,044 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 16:31:21,061 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 16:31:21,099 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 16:31:21,100 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 16:31:21,100 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 16:31:21,101 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 16:31:21,101 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 16:31:21,101 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 16:31:21,102 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 16:31:21,102 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 16:31:21,102 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 16:31:21,124 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states. [2018-10-24 16:31:21,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-10-24 16:31:21,133 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:31:21,134 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:31:21,137 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:31:21,143 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:31:21,144 INFO L82 PathProgramCache]: Analyzing trace with hash -1502078046, now seen corresponding path program 1 times [2018-10-24 16:31:21,148 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:31:21,149 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:31:21,198 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:31:21,199 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:31:21,199 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:31:21,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:31:21,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:31:21,527 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:31:21,527 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:31:21,532 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:31:21,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:31:21,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:31:21,551 INFO L87 Difference]: Start difference. First operand 246 states. Second operand 4 states. [2018-10-24 16:31:24,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:31:24,532 INFO L93 Difference]: Finished difference Result 870 states and 1578 transitions. [2018-10-24 16:31:24,533 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:31:24,535 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2018-10-24 16:31:24,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:31:24,560 INFO L225 Difference]: With dead ends: 870 [2018-10-24 16:31:24,560 INFO L226 Difference]: Without dead ends: 617 [2018-10-24 16:31:24,566 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:31:24,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2018-10-24 16:31:24,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 617. [2018-10-24 16:31:24,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 617 states. [2018-10-24 16:31:24,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 940 transitions. [2018-10-24 16:31:24,667 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 940 transitions. Word has length 36 [2018-10-24 16:31:24,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:31:24,667 INFO L481 AbstractCegarLoop]: Abstraction has 617 states and 940 transitions. [2018-10-24 16:31:24,668 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:31:24,668 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 940 transitions. [2018-10-24 16:31:24,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2018-10-24 16:31:24,675 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:31:24,676 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:31:24,676 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:31:24,676 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:31:24,677 INFO L82 PathProgramCache]: Analyzing trace with hash -324869239, now seen corresponding path program 1 times [2018-10-24 16:31:24,677 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:31:24,677 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:31:24,678 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:31:24,679 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:31:24,679 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:31:24,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:31:25,311 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:31:25,311 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:31:25,311 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 16:31:25,313 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 16:31:25,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 16:31:25,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-24 16:31:25,314 INFO L87 Difference]: Start difference. First operand 617 states and 940 transitions. Second operand 6 states. [2018-10-24 16:31:30,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:31:30,981 INFO L93 Difference]: Finished difference Result 3026 states and 4618 transitions. [2018-10-24 16:31:30,982 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-24 16:31:30,983 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 145 [2018-10-24 16:31:30,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:31:30,997 INFO L225 Difference]: With dead ends: 3026 [2018-10-24 16:31:30,997 INFO L226 Difference]: Without dead ends: 2411 [2018-10-24 16:31:31,002 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2018-10-24 16:31:31,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2411 states. [2018-10-24 16:31:31,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2411 to 1870. [2018-10-24 16:31:31,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1870 states. [2018-10-24 16:31:31,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1870 states to 1870 states and 2494 transitions. [2018-10-24 16:31:31,070 INFO L78 Accepts]: Start accepts. Automaton has 1870 states and 2494 transitions. Word has length 145 [2018-10-24 16:31:31,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:31:31,071 INFO L481 AbstractCegarLoop]: Abstraction has 1870 states and 2494 transitions. [2018-10-24 16:31:31,071 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 16:31:31,071 INFO L276 IsEmpty]: Start isEmpty. Operand 1870 states and 2494 transitions. [2018-10-24 16:31:31,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2018-10-24 16:31:31,078 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:31:31,078 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:31:31,078 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:31:31,079 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:31:31,079 INFO L82 PathProgramCache]: Analyzing trace with hash 676431673, now seen corresponding path program 1 times [2018-10-24 16:31:31,079 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:31:31,079 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:31:31,080 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:31:31,080 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:31:31,080 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:31:31,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:31:31,214 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2018-10-24 16:31:31,214 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:31:31,214 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:31:31,215 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:31:31,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:31:31,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:31:31,215 INFO L87 Difference]: Start difference. First operand 1870 states and 2494 transitions. Second operand 4 states. [2018-10-24 16:31:34,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:31:34,586 INFO L93 Difference]: Finished difference Result 5170 states and 7227 transitions. [2018-10-24 16:31:34,587 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:31:34,587 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 212 [2018-10-24 16:31:34,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:31:34,603 INFO L225 Difference]: With dead ends: 5170 [2018-10-24 16:31:34,604 INFO L226 Difference]: Without dead ends: 3302 [2018-10-24 16:31:34,607 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:31:34,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3302 states. [2018-10-24 16:31:34,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3302 to 3302. [2018-10-24 16:31:34,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3302 states. [2018-10-24 16:31:34,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3302 states to 3302 states and 4301 transitions. [2018-10-24 16:31:34,671 INFO L78 Accepts]: Start accepts. Automaton has 3302 states and 4301 transitions. Word has length 212 [2018-10-24 16:31:34,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:31:34,671 INFO L481 AbstractCegarLoop]: Abstraction has 3302 states and 4301 transitions. [2018-10-24 16:31:34,672 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:31:34,672 INFO L276 IsEmpty]: Start isEmpty. Operand 3302 states and 4301 transitions. [2018-10-24 16:31:34,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2018-10-24 16:31:34,676 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:31:34,676 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:31:34,677 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:31:34,677 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:31:34,677 INFO L82 PathProgramCache]: Analyzing trace with hash -1239013252, now seen corresponding path program 1 times [2018-10-24 16:31:34,677 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:31:34,677 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:31:34,678 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:31:34,678 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:31:34,679 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:31:34,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:31:34,968 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 138 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-24 16:31:34,968 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:31:34,969 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 16:31:34,978 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:31:35,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:31:35,066 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:31:35,190 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2018-10-24 16:31:35,217 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 16:31:35,217 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2018-10-24 16:31:35,218 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 16:31:35,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 16:31:35,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-24 16:31:35,219 INFO L87 Difference]: Start difference. First operand 3302 states and 4301 transitions. Second operand 6 states. [2018-10-24 16:31:36,801 WARN L179 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 15 [2018-10-24 16:31:42,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:31:42,402 INFO L93 Difference]: Finished difference Result 9155 states and 11800 transitions. [2018-10-24 16:31:42,404 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 16:31:42,404 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 226 [2018-10-24 16:31:42,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:31:42,427 INFO L225 Difference]: With dead ends: 9155 [2018-10-24 16:31:42,427 INFO L226 Difference]: Without dead ends: 5284 [2018-10-24 16:31:42,433 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 227 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-24 16:31:42,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5284 states. [2018-10-24 16:31:42,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5284 to 3285. [2018-10-24 16:31:42,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3285 states. [2018-10-24 16:31:42,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3285 states to 3285 states and 3679 transitions. [2018-10-24 16:31:42,515 INFO L78 Accepts]: Start accepts. Automaton has 3285 states and 3679 transitions. Word has length 226 [2018-10-24 16:31:42,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:31:42,515 INFO L481 AbstractCegarLoop]: Abstraction has 3285 states and 3679 transitions. [2018-10-24 16:31:42,515 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 16:31:42,516 INFO L276 IsEmpty]: Start isEmpty. Operand 3285 states and 3679 transitions. [2018-10-24 16:31:42,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2018-10-24 16:31:42,523 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:31:42,523 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:31:42,523 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:31:42,524 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:31:42,524 INFO L82 PathProgramCache]: Analyzing trace with hash 439405840, now seen corresponding path program 1 times [2018-10-24 16:31:42,524 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:31:42,524 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:31:42,525 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:31:42,525 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:31:42,525 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:31:42,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:31:43,153 WARN L179 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 12 [2018-10-24 16:31:43,500 WARN L179 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 15 [2018-10-24 16:31:43,712 WARN L179 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 21 [2018-10-24 16:31:43,989 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 266 proven. 46 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2018-10-24 16:31:43,989 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:31:43,989 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 16:31:43,999 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:31:44,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:31:44,098 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:31:44,239 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2018-10-24 16:31:44,259 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 16:31:44,259 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2018-10-24 16:31:44,260 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-24 16:31:44,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-24 16:31:44,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-10-24 16:31:44,261 INFO L87 Difference]: Start difference. First operand 3285 states and 3679 transitions. Second operand 8 states. [2018-10-24 16:31:49,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:31:49,952 INFO L93 Difference]: Finished difference Result 8020 states and 9093 transitions. [2018-10-24 16:31:49,952 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-24 16:31:49,953 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 343 [2018-10-24 16:31:49,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:31:49,976 INFO L225 Difference]: With dead ends: 8020 [2018-10-24 16:31:49,976 INFO L226 Difference]: Without dead ends: 4736 [2018-10-24 16:31:49,981 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 345 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-10-24 16:31:49,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4736 states. [2018-10-24 16:31:50,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4736 to 4537. [2018-10-24 16:31:50,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4537 states. [2018-10-24 16:31:50,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4537 states to 4537 states and 4998 transitions. [2018-10-24 16:31:50,048 INFO L78 Accepts]: Start accepts. Automaton has 4537 states and 4998 transitions. Word has length 343 [2018-10-24 16:31:50,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:31:50,048 INFO L481 AbstractCegarLoop]: Abstraction has 4537 states and 4998 transitions. [2018-10-24 16:31:50,048 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-24 16:31:50,049 INFO L276 IsEmpty]: Start isEmpty. Operand 4537 states and 4998 transitions. [2018-10-24 16:31:50,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 512 [2018-10-24 16:31:50,061 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:31:50,061 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:31:50,061 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:31:50,062 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:31:50,062 INFO L82 PathProgramCache]: Analyzing trace with hash -465154643, now seen corresponding path program 1 times [2018-10-24 16:31:50,062 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:31:50,062 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:31:50,063 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:31:50,063 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:31:50,063 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:31:50,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:31:50,549 INFO L134 CoverageAnalysis]: Checked inductivity of 1013 backedges. 169 proven. 0 refuted. 0 times theorem prover too weak. 844 trivial. 0 not checked. [2018-10-24 16:31:50,550 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:31:50,550 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:31:50,551 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:31:50,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:31:50,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:31:50,551 INFO L87 Difference]: Start difference. First operand 4537 states and 4998 transitions. Second operand 4 states. [2018-10-24 16:31:52,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:31:52,630 INFO L93 Difference]: Finished difference Result 12115 states and 13629 transitions. [2018-10-24 16:31:52,630 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:31:52,631 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 511 [2018-10-24 16:31:52,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:31:52,656 INFO L225 Difference]: With dead ends: 12115 [2018-10-24 16:31:52,656 INFO L226 Difference]: Without dead ends: 7759 [2018-10-24 16:31:52,661 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:31:52,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7759 states. [2018-10-24 16:31:52,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7759 to 7580. [2018-10-24 16:31:52,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7580 states. [2018-10-24 16:31:52,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7580 states to 7580 states and 8393 transitions. [2018-10-24 16:31:52,773 INFO L78 Accepts]: Start accepts. Automaton has 7580 states and 8393 transitions. Word has length 511 [2018-10-24 16:31:52,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:31:52,774 INFO L481 AbstractCegarLoop]: Abstraction has 7580 states and 8393 transitions. [2018-10-24 16:31:52,774 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:31:52,774 INFO L276 IsEmpty]: Start isEmpty. Operand 7580 states and 8393 transitions. [2018-10-24 16:31:52,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 520 [2018-10-24 16:31:52,787 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:31:52,788 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:31:52,788 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:31:52,788 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:31:52,789 INFO L82 PathProgramCache]: Analyzing trace with hash -1798243687, now seen corresponding path program 1 times [2018-10-24 16:31:52,789 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:31:52,789 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:31:52,790 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:31:52,790 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:31:52,790 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:31:52,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:31:53,491 INFO L134 CoverageAnalysis]: Checked inductivity of 1037 backedges. 719 proven. 0 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2018-10-24 16:31:53,491 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:31:53,491 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 16:31:53,492 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 16:31:53,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 16:31:53,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-10-24 16:31:53,493 INFO L87 Difference]: Start difference. First operand 7580 states and 8393 transitions. Second operand 7 states. [2018-10-24 16:31:55,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:31:55,198 INFO L93 Difference]: Finished difference Result 15400 states and 17076 transitions. [2018-10-24 16:31:55,199 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 16:31:55,199 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 519 [2018-10-24 16:31:55,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:31:55,224 INFO L225 Difference]: With dead ends: 15400 [2018-10-24 16:31:55,224 INFO L226 Difference]: Without dead ends: 7398 [2018-10-24 16:31:55,232 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-10-24 16:31:55,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7398 states. [2018-10-24 16:31:55,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7398 to 7398. [2018-10-24 16:31:55,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7398 states. [2018-10-24 16:31:55,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7398 states to 7398 states and 8099 transitions. [2018-10-24 16:31:55,342 INFO L78 Accepts]: Start accepts. Automaton has 7398 states and 8099 transitions. Word has length 519 [2018-10-24 16:31:55,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:31:55,343 INFO L481 AbstractCegarLoop]: Abstraction has 7398 states and 8099 transitions. [2018-10-24 16:31:55,343 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 16:31:55,343 INFO L276 IsEmpty]: Start isEmpty. Operand 7398 states and 8099 transitions. [2018-10-24 16:31:55,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 746 [2018-10-24 16:31:55,370 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:31:55,371 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:31:55,371 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:31:55,371 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:31:55,372 INFO L82 PathProgramCache]: Analyzing trace with hash 797008293, now seen corresponding path program 1 times [2018-10-24 16:31:55,372 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:31:55,372 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:31:55,373 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:31:55,373 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:31:55,373 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:31:55,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:31:56,204 INFO L134 CoverageAnalysis]: Checked inductivity of 1615 backedges. 1171 proven. 0 refuted. 0 times theorem prover too weak. 444 trivial. 0 not checked. [2018-10-24 16:31:56,204 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:31:56,204 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:31:56,205 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:31:56,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:31:56,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:31:56,206 INFO L87 Difference]: Start difference. First operand 7398 states and 8099 transitions. Second operand 4 states. [2018-10-24 16:31:57,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:31:57,291 INFO L93 Difference]: Finished difference Result 15868 states and 17477 transitions. [2018-10-24 16:31:57,291 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:31:57,292 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 745 [2018-10-24 16:31:57,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:31:57,310 INFO L225 Difference]: With dead ends: 15868 [2018-10-24 16:31:57,310 INFO L226 Difference]: Without dead ends: 8651 [2018-10-24 16:31:57,317 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:31:57,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8651 states. [2018-10-24 16:31:57,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8651 to 8651. [2018-10-24 16:31:57,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8651 states. [2018-10-24 16:31:57,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8651 states to 8651 states and 9363 transitions. [2018-10-24 16:31:57,422 INFO L78 Accepts]: Start accepts. Automaton has 8651 states and 9363 transitions. Word has length 745 [2018-10-24 16:31:57,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:31:57,422 INFO L481 AbstractCegarLoop]: Abstraction has 8651 states and 9363 transitions. [2018-10-24 16:31:57,423 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:31:57,423 INFO L276 IsEmpty]: Start isEmpty. Operand 8651 states and 9363 transitions. [2018-10-24 16:31:57,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 878 [2018-10-24 16:31:57,436 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:31:57,436 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:31:57,437 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:31:57,437 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:31:57,437 INFO L82 PathProgramCache]: Analyzing trace with hash 1546028886, now seen corresponding path program 1 times [2018-10-24 16:31:57,437 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:31:57,438 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:31:57,438 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:31:57,439 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:31:57,439 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:31:57,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:31:58,029 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-24 16:31:58,278 WARN L179 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-10-24 16:31:58,478 WARN L179 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-10-24 16:31:58,754 WARN L179 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-10-24 16:32:00,229 INFO L134 CoverageAnalysis]: Checked inductivity of 2271 backedges. 1615 proven. 201 refuted. 0 times theorem prover too weak. 455 trivial. 0 not checked. [2018-10-24 16:32:00,229 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:32:00,229 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 16:32:00,238 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:32:00,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:32:00,443 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:32:00,791 INFO L134 CoverageAnalysis]: Checked inductivity of 2271 backedges. 237 proven. 0 refuted. 0 times theorem prover too weak. 2034 trivial. 0 not checked. [2018-10-24 16:32:00,812 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 16:32:00,813 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2018-10-24 16:32:00,814 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-24 16:32:00,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-24 16:32:00,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2018-10-24 16:32:00,814 INFO L87 Difference]: Start difference. First operand 8651 states and 9363 transitions. Second operand 9 states. [2018-10-24 16:32:01,856 WARN L179 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-10-24 16:32:05,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:32:05,001 INFO L93 Difference]: Finished difference Result 21061 states and 22893 transitions. [2018-10-24 16:32:05,002 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-24 16:32:05,002 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 877 [2018-10-24 16:32:05,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:32:05,020 INFO L225 Difference]: With dead ends: 21061 [2018-10-24 16:32:05,020 INFO L226 Difference]: Without dead ends: 8083 [2018-10-24 16:32:05,031 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 889 GetRequests, 879 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2018-10-24 16:32:05,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8083 states. [2018-10-24 16:32:05,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8083 to 7900. [2018-10-24 16:32:05,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7900 states. [2018-10-24 16:32:05,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7900 states to 7900 states and 8285 transitions. [2018-10-24 16:32:05,125 INFO L78 Accepts]: Start accepts. Automaton has 7900 states and 8285 transitions. Word has length 877 [2018-10-24 16:32:05,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:32:05,126 INFO L481 AbstractCegarLoop]: Abstraction has 7900 states and 8285 transitions. [2018-10-24 16:32:05,126 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-24 16:32:05,126 INFO L276 IsEmpty]: Start isEmpty. Operand 7900 states and 8285 transitions. [2018-10-24 16:32:05,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 996 [2018-10-24 16:32:05,139 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:32:05,140 INFO L375 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:32:05,140 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:32:05,141 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:32:05,141 INFO L82 PathProgramCache]: Analyzing trace with hash -2064404022, now seen corresponding path program 1 times [2018-10-24 16:32:05,141 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:32:05,141 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:32:05,142 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:32:05,142 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:32:05,142 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:32:05,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:32:05,823 WARN L179 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 11 [2018-10-24 16:32:06,334 INFO L134 CoverageAnalysis]: Checked inductivity of 2979 backedges. 1010 proven. 0 refuted. 0 times theorem prover too weak. 1969 trivial. 0 not checked. [2018-10-24 16:32:06,334 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:32:06,334 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:32:06,335 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:32:06,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:32:06,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:32:06,336 INFO L87 Difference]: Start difference. First operand 7900 states and 8285 transitions. Second operand 4 states. [2018-10-24 16:32:07,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:32:07,364 INFO L93 Difference]: Finished difference Result 15619 states and 16388 transitions. [2018-10-24 16:32:07,366 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:32:07,366 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 995 [2018-10-24 16:32:07,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:32:07,380 INFO L225 Difference]: With dead ends: 15619 [2018-10-24 16:32:07,380 INFO L226 Difference]: Without dead ends: 7720 [2018-10-24 16:32:07,388 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:32:07,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7720 states. [2018-10-24 16:32:07,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7720 to 7720. [2018-10-24 16:32:07,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7720 states. [2018-10-24 16:32:07,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7720 states to 7720 states and 8009 transitions. [2018-10-24 16:32:07,479 INFO L78 Accepts]: Start accepts. Automaton has 7720 states and 8009 transitions. Word has length 995 [2018-10-24 16:32:07,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:32:07,480 INFO L481 AbstractCegarLoop]: Abstraction has 7720 states and 8009 transitions. [2018-10-24 16:32:07,481 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:32:07,481 INFO L276 IsEmpty]: Start isEmpty. Operand 7720 states and 8009 transitions. [2018-10-24 16:32:07,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1043 [2018-10-24 16:32:07,495 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:32:07,496 INFO L375 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:32:07,496 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:32:07,497 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:32:07,497 INFO L82 PathProgramCache]: Analyzing trace with hash -548874685, now seen corresponding path program 1 times [2018-10-24 16:32:07,497 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:32:07,497 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:32:07,498 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:32:07,498 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:32:07,498 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:32:07,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:32:08,562 INFO L134 CoverageAnalysis]: Checked inductivity of 3538 backedges. 2186 proven. 0 refuted. 0 times theorem prover too weak. 1352 trivial. 0 not checked. [2018-10-24 16:32:08,563 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:32:08,563 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 16:32:08,564 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 16:32:08,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 16:32:08,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:32:08,564 INFO L87 Difference]: Start difference. First operand 7720 states and 8009 transitions. Second operand 5 states. [2018-10-24 16:32:09,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:32:09,847 INFO L93 Difference]: Finished difference Result 15617 states and 16206 transitions. [2018-10-24 16:32:09,848 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 16:32:09,848 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1042 [2018-10-24 16:32:09,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:32:09,860 INFO L225 Difference]: With dead ends: 15617 [2018-10-24 16:32:09,860 INFO L226 Difference]: Without dead ends: 8078 [2018-10-24 16:32:09,868 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:32:09,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8078 states. [2018-10-24 16:32:09,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8078 to 7899. [2018-10-24 16:32:09,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7899 states. [2018-10-24 16:32:09,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7899 states to 7899 states and 8189 transitions. [2018-10-24 16:32:09,962 INFO L78 Accepts]: Start accepts. Automaton has 7899 states and 8189 transitions. Word has length 1042 [2018-10-24 16:32:09,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:32:09,963 INFO L481 AbstractCegarLoop]: Abstraction has 7899 states and 8189 transitions. [2018-10-24 16:32:09,963 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 16:32:09,963 INFO L276 IsEmpty]: Start isEmpty. Operand 7899 states and 8189 transitions. [2018-10-24 16:32:09,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1615 [2018-10-24 16:32:09,993 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:32:09,994 INFO L375 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 9, 8, 7, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:32:09,994 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:32:09,994 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:32:09,995 INFO L82 PathProgramCache]: Analyzing trace with hash -487748943, now seen corresponding path program 1 times [2018-10-24 16:32:09,995 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:32:09,995 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:32:09,996 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:32:09,996 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:32:09,996 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:32:10,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:32:12,786 INFO L134 CoverageAnalysis]: Checked inductivity of 8368 backedges. 2641 proven. 0 refuted. 0 times theorem prover too weak. 5727 trivial. 0 not checked. [2018-10-24 16:32:12,786 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:32:12,786 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 16:32:12,787 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 16:32:12,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 16:32:12,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-10-24 16:32:12,787 INFO L87 Difference]: Start difference. First operand 7899 states and 8189 transitions. Second operand 7 states. [2018-10-24 16:32:14,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:32:14,378 INFO L93 Difference]: Finished difference Result 15649 states and 16233 transitions. [2018-10-24 16:32:14,378 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 16:32:14,378 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1614 [2018-10-24 16:32:14,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:32:14,387 INFO L225 Difference]: With dead ends: 15649 [2018-10-24 16:32:14,388 INFO L226 Difference]: Without dead ends: 7359 [2018-10-24 16:32:14,396 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-10-24 16:32:14,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7359 states. [2018-10-24 16:32:14,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7359 to 7359. [2018-10-24 16:32:14,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7359 states. [2018-10-24 16:32:14,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7359 states to 7359 states and 7590 transitions. [2018-10-24 16:32:14,474 INFO L78 Accepts]: Start accepts. Automaton has 7359 states and 7590 transitions. Word has length 1614 [2018-10-24 16:32:14,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:32:14,476 INFO L481 AbstractCegarLoop]: Abstraction has 7359 states and 7590 transitions. [2018-10-24 16:32:14,476 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 16:32:14,476 INFO L276 IsEmpty]: Start isEmpty. Operand 7359 states and 7590 transitions. [2018-10-24 16:32:14,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1661 [2018-10-24 16:32:14,502 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:32:14,503 INFO L375 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 9, 9, 9, 8, 8, 8, 8, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:32:14,503 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:32:14,503 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:32:14,504 INFO L82 PathProgramCache]: Analyzing trace with hash 2121737342, now seen corresponding path program 1 times [2018-10-24 16:32:14,504 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:32:14,504 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:32:14,505 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:32:14,505 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:32:14,505 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:32:14,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:32:15,951 WARN L179 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-10-24 16:32:16,279 WARN L179 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2018-10-24 16:32:19,635 INFO L134 CoverageAnalysis]: Checked inductivity of 8633 backedges. 4760 proven. 734 refuted. 0 times theorem prover too weak. 3139 trivial. 0 not checked. [2018-10-24 16:32:19,636 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:32:19,636 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 [2018-10-24 16:32:19,644 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:32:19,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:32:20,023 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:32:24,971 INFO L134 CoverageAnalysis]: Checked inductivity of 8633 backedges. 5770 proven. 527 refuted. 0 times theorem prover too weak. 2336 trivial. 0 not checked. [2018-10-24 16:32:24,993 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 16:32:24,993 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8] total 17 [2018-10-24 16:32:24,997 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-24 16:32:24,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-24 16:32:24,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2018-10-24 16:32:24,998 INFO L87 Difference]: Start difference. First operand 7359 states and 7590 transitions. Second operand 18 states. [2018-10-24 16:32:35,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:32:35,805 INFO L93 Difference]: Finished difference Result 16163 states and 16717 transitions. [2018-10-24 16:32:35,806 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-24 16:32:35,806 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 1660 [2018-10-24 16:32:35,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:32:35,815 INFO L225 Difference]: With dead ends: 16163 [2018-10-24 16:32:35,815 INFO L226 Difference]: Without dead ends: 7724 [2018-10-24 16:32:35,821 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1678 GetRequests, 1654 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=145, Invalid=455, Unknown=0, NotChecked=0, Total=600 [2018-10-24 16:32:35,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7724 states. [2018-10-24 16:32:35,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7724 to 6102. [2018-10-24 16:32:35,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6102 states. [2018-10-24 16:32:35,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6102 states to 6102 states and 6232 transitions. [2018-10-24 16:32:35,884 INFO L78 Accepts]: Start accepts. Automaton has 6102 states and 6232 transitions. Word has length 1660 [2018-10-24 16:32:35,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:32:35,885 INFO L481 AbstractCegarLoop]: Abstraction has 6102 states and 6232 transitions. [2018-10-24 16:32:35,885 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-10-24 16:32:35,885 INFO L276 IsEmpty]: Start isEmpty. Operand 6102 states and 6232 transitions. [2018-10-24 16:32:35,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1830 [2018-10-24 16:32:35,913 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:32:35,914 INFO L375 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 10, 9, 9, 9, 8, 8, 8, 8, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:32:35,914 INFO L424 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:32:35,915 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:32:35,915 INFO L82 PathProgramCache]: Analyzing trace with hash -1977009223, now seen corresponding path program 1 times [2018-10-24 16:32:35,915 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:32:35,915 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:32:35,916 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:32:35,916 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:32:35,916 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:32:36,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:32:38,303 INFO L134 CoverageAnalysis]: Checked inductivity of 10995 backedges. 5662 proven. 636 refuted. 0 times theorem prover too weak. 4697 trivial. 0 not checked. [2018-10-24 16:32:38,303 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:32:38,304 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 [2018-10-24 16:32:38,312 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:32:38,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:32:38,721 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:32:55,303 WARN L179 SmtUtils]: Spent 16.14 s on a formula simplification. DAG size of input: 154 DAG size of output: 85 [2018-10-24 16:32:58,456 INFO L134 CoverageAnalysis]: Checked inductivity of 10995 backedges. 3865 proven. 212 refuted. 0 times theorem prover too weak. 6918 trivial. 0 not checked. [2018-10-24 16:32:58,477 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 16:32:58,477 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 10 [2018-10-24 16:32:58,479 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-24 16:32:58,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-24 16:32:58,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2018-10-24 16:32:58,479 INFO L87 Difference]: Start difference. First operand 6102 states and 6232 transitions. Second operand 10 states. [2018-10-24 16:33:48,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:33:48,548 INFO L93 Difference]: Finished difference Result 17224 states and 17639 transitions. [2018-10-24 16:33:48,548 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-24 16:33:48,548 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 1829 [2018-10-24 16:33:48,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:33:48,559 INFO L225 Difference]: With dead ends: 17224 [2018-10-24 16:33:48,560 INFO L226 Difference]: Without dead ends: 10944 [2018-10-24 16:33:48,564 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1857 GetRequests, 1837 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 16.9s TimeCoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2018-10-24 16:33:48,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10944 states. [2018-10-24 16:33:48,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10944 to 6639. [2018-10-24 16:33:48,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6639 states. [2018-10-24 16:33:48,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6639 states to 6639 states and 6773 transitions. [2018-10-24 16:33:48,647 INFO L78 Accepts]: Start accepts. Automaton has 6639 states and 6773 transitions. Word has length 1829 [2018-10-24 16:33:48,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:33:48,649 INFO L481 AbstractCegarLoop]: Abstraction has 6639 states and 6773 transitions. [2018-10-24 16:33:48,649 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-24 16:33:48,649 INFO L276 IsEmpty]: Start isEmpty. Operand 6639 states and 6773 transitions. [2018-10-24 16:33:48,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2033 [2018-10-24 16:33:48,682 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:33:48,683 INFO L375 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 11, 10, 10, 10, 9, 9, 9, 9, 8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:33:48,683 INFO L424 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:33:48,684 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:33:48,684 INFO L82 PathProgramCache]: Analyzing trace with hash -1134230246, now seen corresponding path program 1 times [2018-10-24 16:33:48,684 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:33:48,684 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:33:48,685 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:33:48,685 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:33:48,685 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:33:48,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:33:50,218 WARN L179 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-10-24 16:33:54,071 INFO L134 CoverageAnalysis]: Checked inductivity of 13909 backedges. 9310 proven. 695 refuted. 0 times theorem prover too weak. 3904 trivial. 0 not checked. [2018-10-24 16:33:54,072 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:33:54,072 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 [2018-10-24 16:33:54,080 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:33:54,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:33:54,510 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:33:58,238 INFO L134 CoverageAnalysis]: Checked inductivity of 13909 backedges. 9395 proven. 184 refuted. 0 times theorem prover too weak. 4330 trivial. 0 not checked. [2018-10-24 16:33:58,271 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 16:33:58,272 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 9 [2018-10-24 16:33:58,274 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-24 16:33:58,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-24 16:33:58,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2018-10-24 16:33:58,275 INFO L87 Difference]: Start difference. First operand 6639 states and 6773 transitions. Second operand 10 states. [2018-10-24 16:34:01,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:34:01,228 INFO L93 Difference]: Finished difference Result 13563 states and 13834 transitions. [2018-10-24 16:34:01,228 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-24 16:34:01,229 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 2032 [2018-10-24 16:34:01,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:34:01,235 INFO L225 Difference]: With dead ends: 13563 [2018-10-24 16:34:01,236 INFO L226 Difference]: Without dead ends: 7105 [2018-10-24 16:34:01,239 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2044 GetRequests, 2031 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210 [2018-10-24 16:34:01,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7105 states. [2018-10-24 16:34:01,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7105 to 6639. [2018-10-24 16:34:01,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6639 states. [2018-10-24 16:34:01,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6639 states to 6639 states and 6751 transitions. [2018-10-24 16:34:01,314 INFO L78 Accepts]: Start accepts. Automaton has 6639 states and 6751 transitions. Word has length 2032 [2018-10-24 16:34:01,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:34:01,315 INFO L481 AbstractCegarLoop]: Abstraction has 6639 states and 6751 transitions. [2018-10-24 16:34:01,315 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-24 16:34:01,315 INFO L276 IsEmpty]: Start isEmpty. Operand 6639 states and 6751 transitions. [2018-10-24 16:34:01,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2045 [2018-10-24 16:34:01,343 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:34:01,344 INFO L375 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 11, 10, 10, 10, 9, 9, 9, 9, 8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:34:01,344 INFO L424 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:34:01,344 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:34:01,345 INFO L82 PathProgramCache]: Analyzing trace with hash -1001687112, now seen corresponding path program 1 times [2018-10-24 16:34:01,345 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:34:01,345 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:34:01,346 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:34:01,346 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:34:01,346 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:34:01,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:34:02,639 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-24 16:34:04,924 INFO L134 CoverageAnalysis]: Checked inductivity of 14067 backedges. 4478 proven. 0 refuted. 0 times theorem prover too weak. 9589 trivial. 0 not checked. [2018-10-24 16:34:04,924 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:34:04,925 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:34:04,926 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:34:04,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:34:04,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:34:04,926 INFO L87 Difference]: Start difference. First operand 6639 states and 6751 transitions. Second operand 4 states. [2018-10-24 16:34:06,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:34:06,072 INFO L93 Difference]: Finished difference Result 13097 states and 13320 transitions. [2018-10-24 16:34:06,073 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:34:06,073 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 2044 [2018-10-24 16:34:06,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:34:06,078 INFO L225 Difference]: With dead ends: 13097 [2018-10-24 16:34:06,078 INFO L226 Difference]: Without dead ends: 6459 [2018-10-24 16:34:06,082 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:34:06,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6459 states. [2018-10-24 16:34:06,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6459 to 6459. [2018-10-24 16:34:06,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6459 states. [2018-10-24 16:34:06,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6459 states to 6459 states and 6562 transitions. [2018-10-24 16:34:06,148 INFO L78 Accepts]: Start accepts. Automaton has 6459 states and 6562 transitions. Word has length 2044 [2018-10-24 16:34:06,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:34:06,149 INFO L481 AbstractCegarLoop]: Abstraction has 6459 states and 6562 transitions. [2018-10-24 16:34:06,149 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:34:06,149 INFO L276 IsEmpty]: Start isEmpty. Operand 6459 states and 6562 transitions. [2018-10-24 16:34:06,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2134 [2018-10-24 16:34:06,173 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:34:06,174 INFO L375 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 12, 11, 11, 11, 10, 10, 10, 10, 9, 8, 8, 8, 8, 8, 8, 8, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:34:06,174 INFO L424 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:34:06,175 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:34:06,175 INFO L82 PathProgramCache]: Analyzing trace with hash -1689147050, now seen corresponding path program 1 times [2018-10-24 16:34:06,175 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:34:06,175 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:34:06,176 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:34:06,176 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:34:06,176 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:34:06,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:34:08,755 INFO L134 CoverageAnalysis]: Checked inductivity of 14614 backedges. 4560 proven. 212 refuted. 0 times theorem prover too weak. 9842 trivial. 0 not checked. [2018-10-24 16:34:08,756 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:34:08,756 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 16:34:08,763 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:34:09,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:34:09,246 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:34:34,417 WARN L179 SmtUtils]: Spent 24.82 s on a formula simplification. DAG size of input: 533 DAG size of output: 150 [2018-10-24 16:34:39,734 INFO L134 CoverageAnalysis]: Checked inductivity of 14614 backedges. 4560 proven. 212 refuted. 0 times theorem prover too weak. 9842 trivial. 0 not checked. [2018-10-24 16:34:39,756 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 16:34:39,757 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 7 [2018-10-24 16:34:39,758 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 16:34:39,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 16:34:39,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-10-24 16:34:39,759 INFO L87 Difference]: Start difference. First operand 6459 states and 6562 transitions. Second operand 7 states. [2018-10-24 16:34:50,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:34:50,332 INFO L93 Difference]: Finished difference Result 13877 states and 14096 transitions. [2018-10-24 16:34:50,333 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 16:34:50,333 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 2133 [2018-10-24 16:34:50,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:34:50,341 INFO L225 Difference]: With dead ends: 13877 [2018-10-24 16:34:50,341 INFO L226 Difference]: Without dead ends: 7599 [2018-10-24 16:34:50,346 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2140 GetRequests, 2133 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 25.2s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-24 16:34:50,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7599 states. [2018-10-24 16:34:50,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7599 to 6581. [2018-10-24 16:34:50,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6581 states. [2018-10-24 16:34:50,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6581 states to 6581 states and 6687 transitions. [2018-10-24 16:34:50,446 INFO L78 Accepts]: Start accepts. Automaton has 6581 states and 6687 transitions. Word has length 2133 [2018-10-24 16:34:50,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:34:50,448 INFO L481 AbstractCegarLoop]: Abstraction has 6581 states and 6687 transitions. [2018-10-24 16:34:50,448 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 16:34:50,448 INFO L276 IsEmpty]: Start isEmpty. Operand 6581 states and 6687 transitions. [2018-10-24 16:34:50,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2313 [2018-10-24 16:34:50,482 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:34:50,483 INFO L375 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 17, 17, 17, 16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 13, 12, 12, 12, 11, 11, 11, 11, 10, 9, 9, 9, 9, 9, 9, 9, 8, 8, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:34:50,483 INFO L424 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:34:50,484 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:34:50,484 INFO L82 PathProgramCache]: Analyzing trace with hash 396871524, now seen corresponding path program 1 times [2018-10-24 16:34:50,484 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:34:50,484 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:34:50,485 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:34:50,485 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:34:50,486 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:34:50,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:34:51,815 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-10-24 16:34:52,026 WARN L179 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-10-24 16:34:54,848 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 5217 proven. 102 refuted. 0 times theorem prover too weak. 11425 trivial. 0 not checked. [2018-10-24 16:34:54,849 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:34:54,849 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 16:34:54,857 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:34:55,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:34:55,373 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:34:58,094 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 5107 proven. 212 refuted. 0 times theorem prover too weak. 11425 trivial. 0 not checked. [2018-10-24 16:34:58,117 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 16:34:58,117 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 9 [2018-10-24 16:34:58,119 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-24 16:34:58,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-24 16:34:58,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-10-24 16:34:58,120 INFO L87 Difference]: Start difference. First operand 6581 states and 6687 transitions. Second operand 9 states. [2018-10-24 16:35:01,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:35:01,178 INFO L93 Difference]: Finished difference Result 13371 states and 13586 transitions. [2018-10-24 16:35:01,179 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-24 16:35:01,179 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 2312 [2018-10-24 16:35:01,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:35:01,180 INFO L225 Difference]: With dead ends: 13371 [2018-10-24 16:35:01,181 INFO L226 Difference]: Without dead ends: 0 [2018-10-24 16:35:01,187 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2325 GetRequests, 2315 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2018-10-24 16:35:01,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-24 16:35:01,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-24 16:35:01,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-24 16:35:01,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-24 16:35:01,188 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 2312 [2018-10-24 16:35:01,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:35:01,188 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-24 16:35:01,188 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-24 16:35:01,188 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-24 16:35:01,189 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-24 16:35:01,194 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-10-24 16:35:01,221 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:35:01,331 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:35:01,339 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:35:01,508 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:35:01,531 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:35:01,601 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:35:01,785 WARN L179 SmtUtils]: Spent 586.00 ms on a formula simplification. DAG size of input: 671 DAG size of output: 530 [2018-10-24 16:35:01,804 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:35:01,872 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:35:01,878 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:35:02,009 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:35:02,026 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:35:02,073 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:35:02,223 WARN L179 SmtUtils]: Spent 432.00 ms on a formula simplification. DAG size of input: 668 DAG size of output: 527 Received shutdown request... [2018-10-24 16:35:20,311 WARN L187 SmtUtils]: Removed 4 from assertion stack [2018-10-24 16:35:20,311 INFO L256 ToolchainWalker]: Toolchain cancelled while executing plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction. Reason: Timeout or Toolchain cancelled by user [2018-10-24 16:35:20,313 INFO L168 Benchmark]: Toolchain (without parser) took 244153.69 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -791.7 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2018-10-24 16:35:20,314 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 16:35:20,314 INFO L168 Benchmark]: CACSL2BoogieTranslator took 817.19 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: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-10-24 16:35:20,316 INFO L168 Benchmark]: Boogie Procedure Inliner took 280.09 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 720.4 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -805.9 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. [2018-10-24 16:35:20,316 INFO L168 Benchmark]: Boogie Preprocessor took 127.63 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. [2018-10-24 16:35:20,317 INFO L168 Benchmark]: RCFGBuilder took 3625.74 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 120.6 MB). Peak memory consumption was 120.6 MB. Max. memory is 7.1 GB. [2018-10-24 16:35:20,318 INFO L168 Benchmark]: TraceAbstraction took 239295.28 ms. Allocated memory was 2.2 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 2.2 GB in the end (delta: -162.4 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. [2018-10-24 16:35:20,323 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 817.19 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: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 280.09 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 720.4 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -805.9 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 127.63 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3625.74 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 120.6 MB). Peak memory consumption was 120.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 239295.28 ms. Allocated memory was 2.2 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 2.2 GB in the end (delta: -162.4 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 109]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - TimeoutResult: Timeout (de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction) Toolchain cancelled while SimplifyDDAWithTimeout was simplifying term of DAG size 508. RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown