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/Problem17_label26_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 14:29:35,155 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 14:29:35,157 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 14:29:35,169 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 14:29:35,170 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 14:29:35,171 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 14:29:35,172 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 14:29:35,174 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 14:29:35,175 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 14:29:35,176 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 14:29:35,177 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 14:29:35,177 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 14:29:35,178 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 14:29:35,179 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 14:29:35,180 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 14:29:35,181 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 14:29:35,182 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 14:29:35,184 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 14:29:35,186 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 14:29:35,187 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 14:29:35,190 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 14:29:35,191 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 14:29:35,199 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 14:29:35,199 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 14:29:35,199 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 14:29:35,200 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 14:29:35,202 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 14:29:35,202 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 14:29:35,205 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 14:29:35,206 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 14:29:35,206 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 14:29:35,207 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-24 14:29:35,211 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 14:29:35,235 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 14:29:35,235 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 14:29:35,236 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 14:29:35,236 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 14:29:35,238 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 14:29:35,238 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 14:29:35,238 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 14:29:35,238 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 14:29:35,239 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 14:29:35,239 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 14:29:35,239 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 14:29:35,239 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 14:29:35,239 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 14:29:35,239 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 14:29:35,240 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 14:29:35,241 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 14:29:35,241 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 14:29:35,241 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 14:29:35,241 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 14:29:35,241 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 14:29:35,243 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 14:29:35,243 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 14:29:35,243 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 14:29:35,243 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 14:29:35,244 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 14:29:35,244 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 14:29:35,244 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 14:29:35,244 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 14:29:35,306 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 14:29:35,320 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 14:29:35,325 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 14:29:35,326 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 14:29:35,327 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 14:29:35,327 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label26_false-unreach-call.c [2018-10-24 14:29:35,385 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/50a21138c/5875fd0850164e8b9bc39b78eef82374/FLAG246dc2a13 [2018-10-24 14:29:36,039 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 14:29:36,040 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label26_false-unreach-call.c [2018-10-24 14:29:36,062 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/50a21138c/5875fd0850164e8b9bc39b78eef82374/FLAG246dc2a13 [2018-10-24 14:29:36,078 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/50a21138c/5875fd0850164e8b9bc39b78eef82374 [2018-10-24 14:29:36,090 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 14:29:36,092 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 14:29:36,093 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 14:29:36,093 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 14:29:36,098 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 14:29:36,099 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:29:36" (1/1) ... [2018-10-24 14:29:36,102 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b326c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:29:36, skipping insertion in model container [2018-10-24 14:29:36,102 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:29:36" (1/1) ... [2018-10-24 14:29:36,114 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 14:29:36,236 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 14:29:37,336 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 14:29:37,341 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 14:29:37,803 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 14:29:37,829 INFO L193 MainTranslator]: Completed translation [2018-10-24 14:29:37,829 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:29:37 WrapperNode [2018-10-24 14:29:37,830 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 14:29:37,833 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 14:29:37,833 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 14:29:37,833 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 14:29:37,844 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:29:37" (1/1) ... [2018-10-24 14:29:37,903 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:29:37" (1/1) ... [2018-10-24 14:29:38,431 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 14:29:38,431 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 14:29:38,432 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 14:29:38,432 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 14:29:38,444 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:29:37" (1/1) ... [2018-10-24 14:29:38,445 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:29:37" (1/1) ... [2018-10-24 14:29:38,482 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:29:37" (1/1) ... [2018-10-24 14:29:38,482 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:29:37" (1/1) ... [2018-10-24 14:29:38,591 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:29:37" (1/1) ... [2018-10-24 14:29:38,618 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:29:37" (1/1) ... [2018-10-24 14:29:38,673 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:29:37" (1/1) ... [2018-10-24 14:29:38,710 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 14:29:38,711 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 14:29:38,711 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 14:29:38,711 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 14:29:38,712 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:29:37" (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 14:29:38,774 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-24 14:29:38,775 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 14:29:38,775 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 14:29:48,182 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 14:29:48,183 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:29:48 BoogieIcfgContainer [2018-10-24 14:29:48,183 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 14:29:48,184 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 14:29:48,185 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 14:29:48,188 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 14:29:48,188 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 02:29:36" (1/3) ... [2018-10-24 14:29:48,189 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16d8ffb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:29:48, skipping insertion in model container [2018-10-24 14:29:48,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:29:37" (2/3) ... [2018-10-24 14:29:48,190 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16d8ffb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:29:48, skipping insertion in model container [2018-10-24 14:29:48,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:29:48" (3/3) ... [2018-10-24 14:29:48,192 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label26_false-unreach-call.c [2018-10-24 14:29:48,202 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 14:29:48,211 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 14:29:48,229 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 14:29:48,272 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 14:29:48,273 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 14:29:48,273 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 14:29:48,273 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 14:29:48,273 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 14:29:48,273 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 14:29:48,274 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 14:29:48,274 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 14:29:48,274 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 14:29:48,306 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states. [2018-10-24 14:29:48,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-10-24 14:29:48,323 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:29:48,324 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] [2018-10-24 14:29:48,327 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:29:48,334 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:29:48,334 INFO L82 PathProgramCache]: Analyzing trace with hash 1827210562, now seen corresponding path program 1 times [2018-10-24 14:29:48,336 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:29:48,337 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:29:48,388 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:29:48,388 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:29:48,389 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:29:48,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:29:48,787 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 14:29:48,790 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:29:48,791 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:29:48,796 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:29:48,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:29:48,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:29:48,814 INFO L87 Difference]: Start difference. First operand 591 states. Second operand 4 states. [2018-10-24 14:30:01,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:30:01,930 INFO L93 Difference]: Finished difference Result 2122 states and 3950 transitions. [2018-10-24 14:30:01,931 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:30:01,933 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2018-10-24 14:30:01,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:30:01,972 INFO L225 Difference]: With dead ends: 2122 [2018-10-24 14:30:01,972 INFO L226 Difference]: Without dead ends: 1524 [2018-10-24 14:30:01,979 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 14:30:02,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1524 states. [2018-10-24 14:30:02,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1524 to 1497. [2018-10-24 14:30:02,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1497 states. [2018-10-24 14:30:02,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1497 states to 1497 states and 2656 transitions. [2018-10-24 14:30:02,143 INFO L78 Accepts]: Start accepts. Automaton has 1497 states and 2656 transitions. Word has length 29 [2018-10-24 14:30:02,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:30:02,144 INFO L481 AbstractCegarLoop]: Abstraction has 1497 states and 2656 transitions. [2018-10-24 14:30:02,145 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:30:02,145 INFO L276 IsEmpty]: Start isEmpty. Operand 1497 states and 2656 transitions. [2018-10-24 14:30:02,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-10-24 14:30:02,152 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:30:02,154 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, 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 14:30:02,155 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:30:02,155 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:30:02,156 INFO L82 PathProgramCache]: Analyzing trace with hash 896281312, now seen corresponding path program 1 times [2018-10-24 14:30:02,156 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:30:02,156 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:30:02,157 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:30:02,157 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:30:02,158 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:30:02,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:30:02,421 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:30:02,421 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:30:02,421 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:30:02,423 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:30:02,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:30:02,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:30:02,424 INFO L87 Difference]: Start difference. First operand 1497 states and 2656 transitions. Second operand 4 states. [2018-10-24 14:30:17,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:30:17,357 INFO L93 Difference]: Finished difference Result 5604 states and 10151 transitions. [2018-10-24 14:30:17,358 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:30:17,358 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 104 [2018-10-24 14:30:17,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:30:17,380 INFO L225 Difference]: With dead ends: 5604 [2018-10-24 14:30:17,380 INFO L226 Difference]: Without dead ends: 4109 [2018-10-24 14:30:17,387 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 14:30:17,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4109 states. [2018-10-24 14:30:17,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4109 to 4098. [2018-10-24 14:30:17,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4098 states. [2018-10-24 14:30:17,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4098 states to 4098 states and 6039 transitions. [2018-10-24 14:30:17,465 INFO L78 Accepts]: Start accepts. Automaton has 4098 states and 6039 transitions. Word has length 104 [2018-10-24 14:30:17,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:30:17,465 INFO L481 AbstractCegarLoop]: Abstraction has 4098 states and 6039 transitions. [2018-10-24 14:30:17,465 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:30:17,466 INFO L276 IsEmpty]: Start isEmpty. Operand 4098 states and 6039 transitions. [2018-10-24 14:30:17,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2018-10-24 14:30:17,471 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:30:17,471 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, 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, 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 14:30:17,472 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:30:17,472 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:30:17,472 INFO L82 PathProgramCache]: Analyzing trace with hash 1202250733, now seen corresponding path program 1 times [2018-10-24 14:30:17,472 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:30:17,473 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:30:17,473 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:30:17,474 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:30:17,474 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:30:17,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:30:17,714 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:30:17,714 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:30:17,714 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:30:17,715 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:30:17,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:30:17,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:30:17,715 INFO L87 Difference]: Start difference. First operand 4098 states and 6039 transitions. Second operand 4 states. [2018-10-24 14:30:24,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:30:24,395 INFO L93 Difference]: Finished difference Result 15443 states and 23002 transitions. [2018-10-24 14:30:24,396 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:30:24,396 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 167 [2018-10-24 14:30:24,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:30:24,446 INFO L225 Difference]: With dead ends: 15443 [2018-10-24 14:30:24,446 INFO L226 Difference]: Without dead ends: 11347 [2018-10-24 14:30:24,454 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 14:30:24,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11347 states. [2018-10-24 14:30:24,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11347 to 11347. [2018-10-24 14:30:24,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11347 states. [2018-10-24 14:30:24,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11347 states to 11347 states and 14546 transitions. [2018-10-24 14:30:24,661 INFO L78 Accepts]: Start accepts. Automaton has 11347 states and 14546 transitions. Word has length 167 [2018-10-24 14:30:24,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:30:24,661 INFO L481 AbstractCegarLoop]: Abstraction has 11347 states and 14546 transitions. [2018-10-24 14:30:24,662 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:30:24,662 INFO L276 IsEmpty]: Start isEmpty. Operand 11347 states and 14546 transitions. [2018-10-24 14:30:24,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2018-10-24 14:30:24,672 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:30:24,672 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, 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 14:30:24,672 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:30:24,673 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:30:24,673 INFO L82 PathProgramCache]: Analyzing trace with hash -1007255592, now seen corresponding path program 1 times [2018-10-24 14:30:24,673 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:30:24,673 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:30:24,676 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:30:24,677 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:30:24,677 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:30:24,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:30:25,026 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 129 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:30:25,026 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:30:25,026 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:30:25,027 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:30:25,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:30:25,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:30:25,028 INFO L87 Difference]: Start difference. First operand 11347 states and 14546 transitions. Second operand 4 states. [2018-10-24 14:30:29,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:30:29,808 INFO L93 Difference]: Finished difference Result 23544 states and 30340 transitions. [2018-10-24 14:30:29,808 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:30:29,808 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 192 [2018-10-24 14:30:29,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:30:29,852 INFO L225 Difference]: With dead ends: 23544 [2018-10-24 14:30:29,852 INFO L226 Difference]: Without dead ends: 12199 [2018-10-24 14:30:29,868 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 14:30:29,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12199 states. [2018-10-24 14:30:30,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12199 to 12199. [2018-10-24 14:30:30,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12199 states. [2018-10-24 14:30:30,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12199 states to 12199 states and 14547 transitions. [2018-10-24 14:30:30,102 INFO L78 Accepts]: Start accepts. Automaton has 12199 states and 14547 transitions. Word has length 192 [2018-10-24 14:30:30,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:30:30,103 INFO L481 AbstractCegarLoop]: Abstraction has 12199 states and 14547 transitions. [2018-10-24 14:30:30,103 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:30:30,103 INFO L276 IsEmpty]: Start isEmpty. Operand 12199 states and 14547 transitions. [2018-10-24 14:30:30,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2018-10-24 14:30:30,111 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:30:30,111 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, 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, 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 14:30:30,112 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:30:30,112 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:30:30,112 INFO L82 PathProgramCache]: Analyzing trace with hash -1163909284, now seen corresponding path program 1 times [2018-10-24 14:30:30,112 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:30:30,112 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:30:30,113 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:30:30,113 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:30:30,113 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:30:30,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:30:30,867 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 53 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:30:30,867 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:30:30,868 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 14:30:30,877 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:30:30,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:30:30,983 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:30:31,375 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 53 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:30:31,407 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 14:30:31,408 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3] total 6 [2018-10-24 14:30:31,408 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 14:30:31,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 14:30:31,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-10-24 14:30:31,410 INFO L87 Difference]: Start difference. First operand 12199 states and 14547 transitions. Second operand 7 states. [2018-10-24 14:30:48,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:30:48,981 INFO L93 Difference]: Finished difference Result 37706 states and 45491 transitions. [2018-10-24 14:30:48,989 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 14:30:48,989 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 251 [2018-10-24 14:30:48,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:30:49,027 INFO L225 Difference]: With dead ends: 37706 [2018-10-24 14:30:49,027 INFO L226 Difference]: Without dead ends: 21179 [2018-10-24 14:30:49,043 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2018-10-24 14:30:49,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21179 states. [2018-10-24 14:30:49,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21179 to 18151. [2018-10-24 14:30:49,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18151 states. [2018-10-24 14:30:49,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18151 states to 18151 states and 20399 transitions. [2018-10-24 14:30:49,352 INFO L78 Accepts]: Start accepts. Automaton has 18151 states and 20399 transitions. Word has length 251 [2018-10-24 14:30:49,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:30:49,352 INFO L481 AbstractCegarLoop]: Abstraction has 18151 states and 20399 transitions. [2018-10-24 14:30:49,352 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 14:30:49,353 INFO L276 IsEmpty]: Start isEmpty. Operand 18151 states and 20399 transitions. [2018-10-24 14:30:49,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2018-10-24 14:30:49,362 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:30:49,363 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, 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, 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, 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 14:30:49,363 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:30:49,363 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:30:49,364 INFO L82 PathProgramCache]: Analyzing trace with hash -743069123, now seen corresponding path program 1 times [2018-10-24 14:30:49,364 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:30:49,364 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:30:49,365 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:30:49,365 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:30:49,365 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:30:49,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:30:50,148 WARN L179 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 14 [2018-10-24 14:30:50,560 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 242 proven. 83 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2018-10-24 14:30:50,560 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:30:50,560 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 14:30:50,568 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:30:50,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:30:50,675 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:30:51,110 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 242 proven. 83 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2018-10-24 14:30:51,132 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 14:30:51,132 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 3] total 8 [2018-10-24 14:30:51,133 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-24 14:30:51,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-24 14:30:51,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-10-24 14:30:51,133 INFO L87 Difference]: Start difference. First operand 18151 states and 20399 transitions. Second operand 9 states. [2018-10-24 14:31:02,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:31:02,532 INFO L93 Difference]: Finished difference Result 38007 states and 42625 transitions. [2018-10-24 14:31:02,532 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 14:31:02,532 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 344 [2018-10-24 14:31:02,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:31:02,567 INFO L225 Difference]: With dead ends: 38007 [2018-10-24 14:31:02,568 INFO L226 Difference]: Without dead ends: 20287 [2018-10-24 14:31:02,586 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 342 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2018-10-24 14:31:02,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20287 states. [2018-10-24 14:31:02,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20287 to 19855. [2018-10-24 14:31:02,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19855 states. [2018-10-24 14:31:02,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19855 states to 19855 states and 22191 transitions. [2018-10-24 14:31:02,851 INFO L78 Accepts]: Start accepts. Automaton has 19855 states and 22191 transitions. Word has length 344 [2018-10-24 14:31:02,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:31:02,851 INFO L481 AbstractCegarLoop]: Abstraction has 19855 states and 22191 transitions. [2018-10-24 14:31:02,851 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-24 14:31:02,851 INFO L276 IsEmpty]: Start isEmpty. Operand 19855 states and 22191 transitions. [2018-10-24 14:31:02,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2018-10-24 14:31:02,867 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:31:02,868 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, 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, 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, 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 14:31:02,868 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:31:02,868 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:31:02,869 INFO L82 PathProgramCache]: Analyzing trace with hash -374062056, now seen corresponding path program 1 times [2018-10-24 14:31:02,869 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:31:02,869 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:31:02,870 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:31:02,870 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:31:02,870 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:31:02,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:31:04,039 INFO L134 CoverageAnalysis]: Checked inductivity of 371 backedges. 80 proven. 291 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:31:04,039 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:31:04,040 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 14:31:04,248 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:31:04,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:31:04,364 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:31:04,668 WARN L179 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 16 [2018-10-24 14:31:05,105 WARN L179 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 23 [2018-10-24 14:31:06,329 INFO L134 CoverageAnalysis]: Checked inductivity of 371 backedges. 80 proven. 291 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:31:06,359 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 14:31:06,359 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 7 [2018-10-24 14:31:06,360 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-24 14:31:06,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-24 14:31:06,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2018-10-24 14:31:06,361 INFO L87 Difference]: Start difference. First operand 19855 states and 22191 transitions. Second operand 8 states. [2018-10-24 14:31:22,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:31:22,223 INFO L93 Difference]: Finished difference Result 63747 states and 71674 transitions. [2018-10-24 14:31:22,223 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 14:31:22,223 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 396 [2018-10-24 14:31:22,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:31:22,278 INFO L225 Difference]: With dead ends: 63747 [2018-10-24 14:31:22,278 INFO L226 Difference]: Without dead ends: 42619 [2018-10-24 14:31:22,298 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 400 GetRequests, 393 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2018-10-24 14:31:22,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42619 states. [2018-10-24 14:31:22,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42619 to 37362. [2018-10-24 14:31:22,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37362 states. [2018-10-24 14:31:22,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37362 states to 37362 states and 41921 transitions. [2018-10-24 14:31:22,824 INFO L78 Accepts]: Start accepts. Automaton has 37362 states and 41921 transitions. Word has length 396 [2018-10-24 14:31:22,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:31:22,825 INFO L481 AbstractCegarLoop]: Abstraction has 37362 states and 41921 transitions. [2018-10-24 14:31:22,825 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-24 14:31:22,825 INFO L276 IsEmpty]: Start isEmpty. Operand 37362 states and 41921 transitions. [2018-10-24 14:31:22,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2018-10-24 14:31:22,839 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:31:22,839 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, 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, 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, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:31:22,839 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:31:22,840 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:31:22,840 INFO L82 PathProgramCache]: Analyzing trace with hash -1822851898, now seen corresponding path program 1 times [2018-10-24 14:31:22,840 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:31:22,840 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:31:22,841 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:31:22,841 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:31:22,841 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:31:22,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:31:23,449 INFO L134 CoverageAnalysis]: Checked inductivity of 384 backedges. 80 proven. 304 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:31:23,450 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:31:23,450 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 14:31:23,457 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:31:23,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:31:23,569 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:31:23,794 WARN L179 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 17 [2018-10-24 14:31:23,941 INFO L134 CoverageAnalysis]: Checked inductivity of 384 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 304 trivial. 0 not checked. [2018-10-24 14:31:23,962 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 14:31:23,962 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2018-10-24 14:31:23,963 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 14:31:23,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 14:31:23,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-10-24 14:31:23,964 INFO L87 Difference]: Start difference. First operand 37362 states and 41921 transitions. Second operand 7 states. [2018-10-24 14:31:48,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:31:48,156 INFO L93 Difference]: Finished difference Result 110998 states and 125773 transitions. [2018-10-24 14:31:48,157 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-24 14:31:48,157 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 400 [2018-10-24 14:31:48,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:31:48,233 INFO L225 Difference]: With dead ends: 110998 [2018-10-24 14:31:48,234 INFO L226 Difference]: Without dead ends: 64608 [2018-10-24 14:31:48,273 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 410 GetRequests, 402 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-10-24 14:31:48,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64608 states. [2018-10-24 14:31:49,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64608 to 44085. [2018-10-24 14:31:49,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44085 states. [2018-10-24 14:31:49,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44085 states to 44085 states and 48181 transitions. [2018-10-24 14:31:49,325 INFO L78 Accepts]: Start accepts. Automaton has 44085 states and 48181 transitions. Word has length 400 [2018-10-24 14:31:49,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:31:49,326 INFO L481 AbstractCegarLoop]: Abstraction has 44085 states and 48181 transitions. [2018-10-24 14:31:49,326 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 14:31:49,326 INFO L276 IsEmpty]: Start isEmpty. Operand 44085 states and 48181 transitions. [2018-10-24 14:31:49,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2018-10-24 14:31:49,338 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:31:49,338 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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 14:31:49,339 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:31:49,339 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:31:49,339 INFO L82 PathProgramCache]: Analyzing trace with hash 828926873, now seen corresponding path program 1 times [2018-10-24 14:31:49,339 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:31:49,339 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:31:49,340 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:31:49,340 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:31:49,340 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:31:49,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:31:49,842 WARN L179 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 5 [2018-10-24 14:31:49,950 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 228 trivial. 0 not checked. [2018-10-24 14:31:49,951 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:31:49,951 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:31:49,952 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:31:49,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:31:49,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:31:49,952 INFO L87 Difference]: Start difference. First operand 44085 states and 48181 transitions. Second operand 4 states. [2018-10-24 14:31:54,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:31:54,698 INFO L93 Difference]: Finished difference Result 92853 states and 101745 transitions. [2018-10-24 14:31:54,699 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:31:54,699 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 400 [2018-10-24 14:31:54,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:31:54,754 INFO L225 Difference]: With dead ends: 92853 [2018-10-24 14:31:54,754 INFO L226 Difference]: Without dead ends: 53464 [2018-10-24 14:31:54,780 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 14:31:54,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53464 states. [2018-10-24 14:31:55,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53464 to 43219. [2018-10-24 14:31:55,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43219 states. [2018-10-24 14:31:55,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43219 states to 43219 states and 47179 transitions. [2018-10-24 14:31:55,286 INFO L78 Accepts]: Start accepts. Automaton has 43219 states and 47179 transitions. Word has length 400 [2018-10-24 14:31:55,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:31:55,287 INFO L481 AbstractCegarLoop]: Abstraction has 43219 states and 47179 transitions. [2018-10-24 14:31:55,287 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:31:55,287 INFO L276 IsEmpty]: Start isEmpty. Operand 43219 states and 47179 transitions. [2018-10-24 14:31:55,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 449 [2018-10-24 14:31:55,299 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:31:55,299 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 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, 1, 1, 1] [2018-10-24 14:31:55,299 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:31:55,300 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:31:55,300 INFO L82 PathProgramCache]: Analyzing trace with hash 958347253, now seen corresponding path program 1 times [2018-10-24 14:31:55,300 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:31:55,300 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:31:55,303 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:31:55,304 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:31:55,304 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:31:55,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:31:56,085 INFO L134 CoverageAnalysis]: Checked inductivity of 670 backedges. 427 proven. 83 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2018-10-24 14:31:56,086 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:31:56,086 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) [2018-10-24 14:31:56,100 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 14:31:56,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:31:56,235 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:31:56,680 WARN L179 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 18 [2018-10-24 14:31:58,046 INFO L134 CoverageAnalysis]: Checked inductivity of 670 backedges. 643 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2018-10-24 14:31:58,067 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 14:31:58,067 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2018-10-24 14:31:58,068 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 14:31:58,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 14:31:58,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-10-24 14:31:58,068 INFO L87 Difference]: Start difference. First operand 43219 states and 47179 transitions. Second operand 7 states. [2018-10-24 14:32:14,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:32:14,335 INFO L93 Difference]: Finished difference Result 123100 states and 134157 transitions. [2018-10-24 14:32:14,335 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-24 14:32:14,336 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 448 [2018-10-24 14:32:14,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:32:14,412 INFO L225 Difference]: With dead ends: 123100 [2018-10-24 14:32:14,412 INFO L226 Difference]: Without dead ends: 75172 [2018-10-24 14:32:14,448 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 461 GetRequests, 451 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-10-24 14:32:14,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75172 states. [2018-10-24 14:32:15,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75172 to 64080. [2018-10-24 14:32:15,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64080 states. [2018-10-24 14:32:15,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64080 states to 64080 states and 68080 transitions. [2018-10-24 14:32:15,614 INFO L78 Accepts]: Start accepts. Automaton has 64080 states and 68080 transitions. Word has length 448 [2018-10-24 14:32:15,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:32:15,615 INFO L481 AbstractCegarLoop]: Abstraction has 64080 states and 68080 transitions. [2018-10-24 14:32:15,615 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 14:32:15,615 INFO L276 IsEmpty]: Start isEmpty. Operand 64080 states and 68080 transitions. [2018-10-24 14:32:15,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 527 [2018-10-24 14:32:15,630 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:32:15,631 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, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-24 14:32:15,631 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:32:15,631 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:32:15,632 INFO L82 PathProgramCache]: Analyzing trace with hash -1172312242, now seen corresponding path program 1 times [2018-10-24 14:32:15,632 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:32:15,632 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:32:15,633 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:32:15,633 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:32:15,633 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:32:15,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:32:16,173 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 7 DAG size of output: 4 [2018-10-24 14:32:16,697 INFO L134 CoverageAnalysis]: Checked inductivity of 1018 backedges. 752 proven. 239 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2018-10-24 14:32:16,698 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:32:16,698 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 14:32:16,706 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:32:16,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:32:16,856 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:33:17,934 WARN L179 SmtUtils]: Spent 1.01 m on a formula simplification. DAG size of input: 134 DAG size of output: 58 [2018-10-24 14:33:38,821 WARN L179 SmtUtils]: Spent 20.53 s on a formula simplification. DAG size of input: 200 DAG size of output: 31 [2018-10-24 14:33:41,633 INFO L134 CoverageAnalysis]: Checked inductivity of 1018 backedges. 991 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2018-10-24 14:33:41,653 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 14:33:41,654 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2018-10-24 14:33:41,655 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-24 14:33:41,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-24 14:33:41,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2018-10-24 14:33:41,655 INFO L87 Difference]: Start difference. First operand 64080 states and 68080 transitions. Second operand 13 states. Received shutdown request... [2018-10-24 14:33:44,034 WARN L187 SmtUtils]: Removed 7 from assertion stack [2018-10-24 14:33:44,035 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 14:33:44,035 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 14:33:44,040 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 14:33:44,041 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 02:33:44 BoogieIcfgContainer [2018-10-24 14:33:44,041 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 14:33:44,041 INFO L168 Benchmark]: Toolchain (without parser) took 247951.13 ms. Allocated memory was 1.5 GB in the beginning and 4.0 GB in the end (delta: 2.4 GB). Free memory was 1.4 GB in the beginning and 3.0 GB in the end (delta: -1.6 GB). Peak memory consumption was 865.8 MB. Max. memory is 7.1 GB. [2018-10-24 14:33:44,043 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 14:33:44,043 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1737.70 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 126.8 MB). Peak memory consumption was 126.8 MB. Max. memory is 7.1 GB. [2018-10-24 14:33:44,044 INFO L168 Benchmark]: Boogie Procedure Inliner took 598.70 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 794.3 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -906.4 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. [2018-10-24 14:33:44,045 INFO L168 Benchmark]: Boogie Preprocessor took 279.20 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 43.0 MB). Peak memory consumption was 43.0 MB. Max. memory is 7.1 GB. [2018-10-24 14:33:44,046 INFO L168 Benchmark]: RCFGBuilder took 9472.54 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 459.7 MB). Peak memory consumption was 459.7 MB. Max. memory is 7.1 GB. [2018-10-24 14:33:44,046 INFO L168 Benchmark]: TraceAbstraction took 235856.40 ms. Allocated memory was 2.3 GB in the beginning and 4.0 GB in the end (delta: 1.6 GB). Free memory was 1.7 GB in the beginning and 3.0 GB in the end (delta: -1.3 GB). Peak memory consumption was 348.5 MB. Max. memory is 7.1 GB. [2018-10-24 14:33:44,051 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1737.70 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 126.8 MB). Peak memory consumption was 126.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 598.70 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 794.3 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -906.4 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 279.20 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 43.0 MB). Peak memory consumption was 43.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 9472.54 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 459.7 MB). Peak memory consumption was 459.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 235856.40 ms. Allocated memory was 2.3 GB in the beginning and 4.0 GB in the end (delta: 1.6 GB). Free memory was 1.7 GB in the beginning and 3.0 GB in the end (delta: -1.3 GB). Peak memory consumption was 348.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 92]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 92). Cancelled while BasicCegarLoop was constructing difference of abstraction (64080states) and FLOYD_HOARE automaton (currently 3 states, 13 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 60. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 591 locations, 1 error locations. TIMEOUT Result, 235.7s OverallTime, 11 OverallIterations, 6 TraceHistogramMax, 132.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 4170 SDtfs, 20149 SDslu, 3394 SDs, 0 SdLazy, 53811 SolverSat, 6811 SolverUnsat, 7 SolverUnknown, 0 SolverNotchecked, 114.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2432 GetRequests, 2368 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 86.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=64080occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 4.4s AutomataMinimizationTime, 10 MinimizatonAttempts, 50615 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 94.7s InterpolantComputationTime, 5622 NumberOfCodeBlocks, 5622 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 5605 ConstructedInterpolants, 621 QuantifiedInterpolants, 20841255 SizeOfPredicates, 1 NumberOfNonLiveVariables, 3118 ConjunctsInSsa, 25 ConjunctsInUnsatCore, 17 InterpolantComputations, 8 PerfectInterpolantSequences, 4811/6351 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown