java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-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/Problem19_label43_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-06 19:45:14,158 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-06 19:45:14,163 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-06 19:45:14,180 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-06 19:45:14,180 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-06 19:45:14,182 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-06 19:45:14,183 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-06 19:45:14,186 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-06 19:45:14,189 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-06 19:45:14,190 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-06 19:45:14,194 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-06 19:45:14,194 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-06 19:45:14,195 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-06 19:45:14,196 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-06 19:45:14,197 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-06 19:45:14,198 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-06 19:45:14,201 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-06 19:45:14,203 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-06 19:45:14,212 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-06 19:45:14,216 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-06 19:45:14,217 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-06 19:45:14,219 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-06 19:45:14,223 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-06 19:45:14,223 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-06 19:45:14,223 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-06 19:45:14,224 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-06 19:45:14,225 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-06 19:45:14,226 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-06 19:45:14,227 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-06 19:45:14,228 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-06 19:45:14,228 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-06 19:45:14,229 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-06 19:45:14,229 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-06 19:45:14,229 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-06 19:45:14,230 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-06 19:45:14,231 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-06 19:45:14,231 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-11-06 19:45:14,246 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-06 19:45:14,246 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-06 19:45:14,247 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-06 19:45:14,247 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-06 19:45:14,248 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-06 19:45:14,248 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-06 19:45:14,248 INFO L133 SettingsManager]: * Use SBE=true [2018-11-06 19:45:14,248 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-06 19:45:14,249 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-06 19:45:14,249 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-06 19:45:14,249 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-06 19:45:14,249 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-06 19:45:14,249 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-06 19:45:14,250 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-06 19:45:14,250 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-06 19:45:14,250 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-06 19:45:14,250 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-06 19:45:14,250 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-06 19:45:14,251 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-06 19:45:14,251 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-06 19:45:14,251 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-06 19:45:14,251 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-06 19:45:14,251 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-06 19:45:14,252 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-06 19:45:14,252 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-06 19:45:14,252 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-06 19:45:14,252 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-06 19:45:14,252 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-06 19:45:14,294 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-06 19:45:14,307 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-06 19:45:14,311 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-06 19:45:14,313 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-06 19:45:14,313 INFO L276 PluginConnector]: CDTParser initialized [2018-11-06 19:45:14,314 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label43_false-unreach-call.c [2018-11-06 19:45:14,378 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8020de20e/b07d388526644ee7a2cc62fc9383a577/FLAG5821f5bcb [2018-11-06 19:45:15,248 INFO L298 CDTParser]: Found 1 translation units. [2018-11-06 19:45:15,249 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label43_false-unreach-call.c [2018-11-06 19:45:15,298 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8020de20e/b07d388526644ee7a2cc62fc9383a577/FLAG5821f5bcb [2018-11-06 19:45:15,319 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8020de20e/b07d388526644ee7a2cc62fc9383a577 [2018-11-06 19:45:15,333 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-06 19:45:15,336 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-06 19:45:15,337 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-06 19:45:15,337 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-06 19:45:15,343 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-06 19:45:15,345 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:45:15" (1/1) ... [2018-11-06 19:45:15,348 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@158ffb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:45:15, skipping insertion in model container [2018-11-06 19:45:15,348 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:45:15" (1/1) ... [2018-11-06 19:45:15,361 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-06 19:45:15,635 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-06 19:45:17,557 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 19:45:17,562 INFO L189 MainTranslator]: Completed pre-run [2018-11-06 19:45:18,941 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 19:45:18,994 INFO L193 MainTranslator]: Completed translation [2018-11-06 19:45:18,994 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:45:18 WrapperNode [2018-11-06 19:45:18,995 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-06 19:45:18,995 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-06 19:45:18,996 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-06 19:45:18,996 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-06 19:45:19,006 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:45:18" (1/1) ... [2018-11-06 19:45:19,521 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:45:18" (1/1) ... [2018-11-06 19:45:20,026 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-06 19:45:20,026 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-06 19:45:20,027 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-06 19:45:20,027 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-06 19:45:20,038 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:45:18" (1/1) ... [2018-11-06 19:45:20,038 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:45:18" (1/1) ... [2018-11-06 19:45:20,204 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:45:18" (1/1) ... [2018-11-06 19:45:20,205 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:45:18" (1/1) ... [2018-11-06 19:45:20,512 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:45:18" (1/1) ... [2018-11-06 19:45:20,603 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:45:18" (1/1) ... [2018-11-06 19:45:20,723 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:45:18" (1/1) ... [2018-11-06 19:45:20,905 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-06 19:45:20,905 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-06 19:45:20,905 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-06 19:45:20,906 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-06 19:45:20,907 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:45:18" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-06 19:45:20,972 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-06 19:45:20,972 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-06 19:45:20,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-06 19:45:36,926 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-06 19:45:36,927 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:45:36 BoogieIcfgContainer [2018-11-06 19:45:36,927 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-06 19:45:36,928 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-06 19:45:36,928 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-06 19:45:36,931 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-06 19:45:36,932 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 07:45:15" (1/3) ... [2018-11-06 19:45:36,932 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@544a7379 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:45:36, skipping insertion in model container [2018-11-06 19:45:36,933 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:45:18" (2/3) ... [2018-11-06 19:45:36,933 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@544a7379 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:45:36, skipping insertion in model container [2018-11-06 19:45:36,933 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:45:36" (3/3) ... [2018-11-06 19:45:36,935 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label43_false-unreach-call.c [2018-11-06 19:45:36,945 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-06 19:45:36,954 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-06 19:45:36,971 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-06 19:45:37,024 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-06 19:45:37,025 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-06 19:45:37,025 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-06 19:45:37,026 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-06 19:45:37,026 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-06 19:45:37,026 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-06 19:45:37,026 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-06 19:45:37,026 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-06 19:45:37,026 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-06 19:45:37,080 INFO L276 IsEmpty]: Start isEmpty. Operand 1749 states. [2018-11-06 19:45:37,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-06 19:45:37,090 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:45:37,091 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] [2018-11-06 19:45:37,093 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:45:37,099 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:45:37,099 INFO L82 PathProgramCache]: Analyzing trace with hash -314381782, now seen corresponding path program 1 times [2018-11-06 19:45:37,102 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:45:37,102 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:45:37,160 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:45:37,160 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:45:37,161 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:45:37,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:45:37,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 19:45:37,558 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:45:37,558 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 19:45:37,562 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 19:45:37,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 19:45:37,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:45:37,581 INFO L87 Difference]: Start difference. First operand 1749 states. Second operand 4 states. [2018-11-06 19:45:59,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:45:59,871 INFO L93 Difference]: Finished difference Result 6431 states and 12286 transitions. [2018-11-06 19:45:59,872 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 19:45:59,874 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2018-11-06 19:45:59,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:45:59,932 INFO L225 Difference]: With dead ends: 6431 [2018-11-06 19:45:59,932 INFO L226 Difference]: Without dead ends: 4675 [2018-11-06 19:45:59,950 INFO L604 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 [2018-11-06 19:45:59,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4675 states. [2018-11-06 19:46:00,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4675 to 4581. [2018-11-06 19:46:00,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4581 states. [2018-11-06 19:46:00,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4581 states to 4581 states and 7890 transitions. [2018-11-06 19:46:00,163 INFO L78 Accepts]: Start accepts. Automaton has 4581 states and 7890 transitions. Word has length 23 [2018-11-06 19:46:00,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:46:00,164 INFO L480 AbstractCegarLoop]: Abstraction has 4581 states and 7890 transitions. [2018-11-06 19:46:00,164 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 19:46:00,164 INFO L276 IsEmpty]: Start isEmpty. Operand 4581 states and 7890 transitions. [2018-11-06 19:46:00,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2018-11-06 19:46:00,168 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:46:00,169 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-06 19:46:00,169 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:46:00,169 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:46:00,169 INFO L82 PathProgramCache]: Analyzing trace with hash 528267678, now seen corresponding path program 1 times [2018-11-06 19:46:00,170 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:46:00,170 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:46:00,171 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:46:00,171 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:46:00,171 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:46:00,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:46:01,037 WARN L179 SmtUtils]: Spent 369.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 23 [2018-11-06 19:46:01,240 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 4 [2018-11-06 19:46:01,400 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 19:46:01,401 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:46:01,401 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-06 19:46:01,405 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-06 19:46:01,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-06 19:46:01,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-11-06 19:46:01,406 INFO L87 Difference]: Start difference. First operand 4581 states and 7890 transitions. Second operand 6 states. [2018-11-06 19:46:29,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:46:29,012 INFO L93 Difference]: Finished difference Result 17384 states and 28714 transitions. [2018-11-06 19:46:29,012 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-06 19:46:29,013 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 95 [2018-11-06 19:46:29,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:46:29,072 INFO L225 Difference]: With dead ends: 17384 [2018-11-06 19:46:29,072 INFO L226 Difference]: Without dead ends: 12805 [2018-11-06 19:46:29,080 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2018-11-06 19:46:29,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12805 states. [2018-11-06 19:46:29,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12805 to 11430. [2018-11-06 19:46:29,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11430 states. [2018-11-06 19:46:29,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11430 states to 11430 states and 17329 transitions. [2018-11-06 19:46:29,308 INFO L78 Accepts]: Start accepts. Automaton has 11430 states and 17329 transitions. Word has length 95 [2018-11-06 19:46:29,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:46:29,309 INFO L480 AbstractCegarLoop]: Abstraction has 11430 states and 17329 transitions. [2018-11-06 19:46:29,309 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-06 19:46:29,309 INFO L276 IsEmpty]: Start isEmpty. Operand 11430 states and 17329 transitions. [2018-11-06 19:46:29,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2018-11-06 19:46:29,318 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:46:29,319 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:46:29,319 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:46:29,319 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:46:29,320 INFO L82 PathProgramCache]: Analyzing trace with hash 19672493, now seen corresponding path program 1 times [2018-11-06 19:46:29,320 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:46:29,320 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:46:29,321 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:46:29,321 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:46:29,321 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:46:29,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:46:29,944 WARN L179 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-11-06 19:46:30,450 WARN L179 SmtUtils]: Spent 455.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 18 [2018-11-06 19:46:30,846 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-11-06 19:46:30,846 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:46:30,846 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-06 19:46:30,847 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-06 19:46:30,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-06 19:46:30,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-11-06 19:46:30,848 INFO L87 Difference]: Start difference. First operand 11430 states and 17329 transitions. Second operand 7 states. [2018-11-06 19:47:03,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:47:03,743 INFO L93 Difference]: Finished difference Result 35166 states and 54823 transitions. [2018-11-06 19:47:03,750 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-06 19:47:03,750 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 309 [2018-11-06 19:47:03,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:47:03,817 INFO L225 Difference]: With dead ends: 35166 [2018-11-06 19:47:03,818 INFO L226 Difference]: Without dead ends: 23738 [2018-11-06 19:47:03,832 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2018-11-06 19:47:03,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23738 states. [2018-11-06 19:47:04,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23738 to 19636. [2018-11-06 19:47:04,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19636 states. [2018-11-06 19:47:04,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19636 states to 19636 states and 26064 transitions. [2018-11-06 19:47:04,123 INFO L78 Accepts]: Start accepts. Automaton has 19636 states and 26064 transitions. Word has length 309 [2018-11-06 19:47:04,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:47:04,124 INFO L480 AbstractCegarLoop]: Abstraction has 19636 states and 26064 transitions. [2018-11-06 19:47:04,125 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-06 19:47:04,125 INFO L276 IsEmpty]: Start isEmpty. Operand 19636 states and 26064 transitions. [2018-11-06 19:47:04,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2018-11-06 19:47:04,129 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:47:04,129 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:47:04,130 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:47:04,130 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:47:04,130 INFO L82 PathProgramCache]: Analyzing trace with hash 2023125715, now seen corresponding path program 1 times [2018-11-06 19:47:04,130 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:47:04,131 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:47:04,132 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:47:04,132 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:47:04,132 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:47:04,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:47:04,701 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 41 proven. 4 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2018-11-06 19:47:04,702 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 19:47:04,702 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-06 19:47:04,715 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:47:04,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:47:04,872 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 19:47:05,006 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 118 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 19:47:05,027 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 19:47:05,027 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-11-06 19:47:05,029 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 19:47:05,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 19:47:05,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:47:05,030 INFO L87 Difference]: Start difference. First operand 19636 states and 26064 transitions. Second operand 4 states. [2018-11-06 19:47:25,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:47:25,859 INFO L93 Difference]: Finished difference Result 68184 states and 93591 transitions. [2018-11-06 19:47:25,860 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 19:47:25,860 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 337 [2018-11-06 19:47:25,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:47:25,953 INFO L225 Difference]: With dead ends: 68184 [2018-11-06 19:47:25,953 INFO L226 Difference]: Without dead ends: 49916 [2018-11-06 19:47:25,979 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 337 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:47:26,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49916 states. [2018-11-06 19:47:26,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49916 to 31922. [2018-11-06 19:47:26,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31922 states. [2018-11-06 19:47:26,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31922 states to 31922 states and 43418 transitions. [2018-11-06 19:47:26,691 INFO L78 Accepts]: Start accepts. Automaton has 31922 states and 43418 transitions. Word has length 337 [2018-11-06 19:47:26,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:47:26,691 INFO L480 AbstractCegarLoop]: Abstraction has 31922 states and 43418 transitions. [2018-11-06 19:47:26,692 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 19:47:26,692 INFO L276 IsEmpty]: Start isEmpty. Operand 31922 states and 43418 transitions. [2018-11-06 19:47:26,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2018-11-06 19:47:26,699 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:47:26,700 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1] [2018-11-06 19:47:26,700 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:47:26,700 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:47:26,700 INFO L82 PathProgramCache]: Analyzing trace with hash -1256201348, now seen corresponding path program 1 times [2018-11-06 19:47:26,701 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:47:26,701 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:47:26,702 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:47:26,702 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:47:26,702 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:47:26,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:47:27,268 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 41 proven. 65 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2018-11-06 19:47:27,268 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 19:47:27,269 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-06 19:47:27,506 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:47:27,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:47:27,617 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 19:47:27,805 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 161 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 19:47:27,834 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 19:47:27,834 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2018-11-06 19:47:27,835 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-06 19:47:27,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-06 19:47:27,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-11-06 19:47:27,836 INFO L87 Difference]: Start difference. First operand 31922 states and 43418 transitions. Second operand 5 states. [2018-11-06 19:47:55,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:47:55,614 INFO L93 Difference]: Finished difference Result 133872 states and 192096 transitions. [2018-11-06 19:47:55,616 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-06 19:47:55,616 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 382 [2018-11-06 19:47:55,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:47:55,746 INFO L225 Difference]: With dead ends: 133872 [2018-11-06 19:47:55,746 INFO L226 Difference]: Without dead ends: 97852 [2018-11-06 19:47:55,797 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 388 GetRequests, 383 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-11-06 19:47:55,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97852 states. [2018-11-06 19:47:57,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97852 to 95031. [2018-11-06 19:47:57,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95031 states. [2018-11-06 19:47:57,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95031 states to 95031 states and 117721 transitions. [2018-11-06 19:47:57,286 INFO L78 Accepts]: Start accepts. Automaton has 95031 states and 117721 transitions. Word has length 382 [2018-11-06 19:47:57,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:47:57,287 INFO L480 AbstractCegarLoop]: Abstraction has 95031 states and 117721 transitions. [2018-11-06 19:47:57,287 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-06 19:47:57,287 INFO L276 IsEmpty]: Start isEmpty. Operand 95031 states and 117721 transitions. [2018-11-06 19:47:57,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 480 [2018-11-06 19:47:57,296 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:47:57,297 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-06 19:47:57,297 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:47:57,297 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:47:57,298 INFO L82 PathProgramCache]: Analyzing trace with hash -1233959186, now seen corresponding path program 1 times [2018-11-06 19:47:57,298 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:47:57,298 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:47:57,299 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:47:57,299 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:47:57,299 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:47:57,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:47:58,293 WARN L179 SmtUtils]: Spent 435.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 15 [2018-11-06 19:47:58,852 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 256 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 19:47:58,853 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 19:47:58,853 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-06 19:47:58,861 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:47:58,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:47:58,980 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 19:47:59,235 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 260 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 19:47:59,258 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 19:47:59,258 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2018-11-06 19:47:59,259 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-06 19:47:59,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-06 19:47:59,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-06 19:47:59,260 INFO L87 Difference]: Start difference. First operand 95031 states and 117721 transitions. Second operand 5 states. [2018-11-06 19:48:17,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:48:17,944 INFO L93 Difference]: Finished difference Result 210553 states and 259099 transitions. [2018-11-06 19:48:17,944 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-06 19:48:17,944 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 479 [2018-11-06 19:48:17,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:48:18,076 INFO L225 Difference]: With dead ends: 210553 [2018-11-06 19:48:18,076 INFO L226 Difference]: Without dead ends: 112789 [2018-11-06 19:48:18,139 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 485 GetRequests, 479 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-11-06 19:48:18,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112789 states. [2018-11-06 19:48:19,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112789 to 111421. [2018-11-06 19:48:19,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111421 states. [2018-11-06 19:48:19,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111421 states to 111421 states and 125638 transitions. [2018-11-06 19:48:19,962 INFO L78 Accepts]: Start accepts. Automaton has 111421 states and 125638 transitions. Word has length 479 [2018-11-06 19:48:19,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:48:19,963 INFO L480 AbstractCegarLoop]: Abstraction has 111421 states and 125638 transitions. [2018-11-06 19:48:19,963 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-06 19:48:19,963 INFO L276 IsEmpty]: Start isEmpty. Operand 111421 states and 125638 transitions. [2018-11-06 19:48:19,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 732 [2018-11-06 19:48:19,981 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:48:19,982 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:48:19,982 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:48:19,982 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:48:19,982 INFO L82 PathProgramCache]: Analyzing trace with hash -146976363, now seen corresponding path program 1 times [2018-11-06 19:48:19,983 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:48:19,983 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:48:19,984 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:48:19,984 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:48:19,984 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:48:20,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:48:20,867 WARN L179 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 10 [2018-11-06 19:48:21,178 WARN L179 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 9 [2018-11-06 19:48:22,208 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 41 proven. 65 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2018-11-06 19:48:22,209 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 19:48:22,209 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-06 19:48:22,218 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:48:22,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:48:22,398 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 19:48:23,769 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 260 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 19:48:23,789 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 19:48:23,789 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2018-11-06 19:48:23,790 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-06 19:48:23,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-06 19:48:23,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-11-06 19:48:23,791 INFO L87 Difference]: Start difference. First operand 111421 states and 125638 transitions. Second operand 7 states. [2018-11-06 19:48:49,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:48:49,297 INFO L93 Difference]: Finished difference Result 414296 states and 460350 transitions. [2018-11-06 19:48:49,298 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-06 19:48:49,298 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 731 [2018-11-06 19:48:49,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:48:49,610 INFO L225 Difference]: With dead ends: 414296 [2018-11-06 19:48:49,610 INFO L226 Difference]: Without dead ends: 304243 [2018-11-06 19:48:49,662 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 737 GetRequests, 729 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2018-11-06 19:48:49,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304243 states. [2018-11-06 19:48:51,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304243 to 175614. [2018-11-06 19:48:51,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175614 states. [2018-11-06 19:48:51,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175614 states to 175614 states and 196200 transitions. [2018-11-06 19:48:51,659 INFO L78 Accepts]: Start accepts. Automaton has 175614 states and 196200 transitions. Word has length 731 [2018-11-06 19:48:51,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:48:51,660 INFO L480 AbstractCegarLoop]: Abstraction has 175614 states and 196200 transitions. [2018-11-06 19:48:51,661 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-06 19:48:51,661 INFO L276 IsEmpty]: Start isEmpty. Operand 175614 states and 196200 transitions. [2018-11-06 19:48:51,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 956 [2018-11-06 19:48:51,674 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:48:51,675 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:48:51,675 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:48:51,675 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:48:51,676 INFO L82 PathProgramCache]: Analyzing trace with hash 1122296291, now seen corresponding path program 1 times [2018-11-06 19:48:51,676 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:48:51,676 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:48:51,677 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:48:51,677 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:48:51,677 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:48:51,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:48:53,731 INFO L134 CoverageAnalysis]: Checked inductivity of 713 backedges. 503 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2018-11-06 19:48:53,731 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:48:53,732 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-06 19:48:53,732 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-06 19:48:53,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-06 19:48:53,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-06 19:48:53,733 INFO L87 Difference]: Start difference. First operand 175614 states and 196200 transitions. Second operand 5 states. Received shutdown request... [2018-11-06 19:49:07,431 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-06 19:49:07,432 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-06 19:49:07,437 WARN L205 ceAbstractionStarter]: Timeout [2018-11-06 19:49:07,437 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 07:49:07 BoogieIcfgContainer [2018-11-06 19:49:07,438 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-06 19:49:07,438 INFO L168 Benchmark]: Toolchain (without parser) took 232104.50 ms. Allocated memory was 1.5 GB in the beginning and 3.6 GB in the end (delta: 2.1 GB). Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 195.4 MB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. [2018-11-06 19:49:07,439 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. [2018-11-06 19:49:07,440 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3657.88 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 401.6 MB). Peak memory consumption was 401.6 MB. Max. memory is 7.1 GB. [2018-11-06 19:49:07,441 INFO L168 Benchmark]: Boogie Procedure Inliner took 1030.74 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 867.2 MB). Free memory was 1.0 GB in the beginning and 2.2 GB in the end (delta: -1.2 GB). Peak memory consumption was 99.0 MB. Max. memory is 7.1 GB. [2018-11-06 19:49:07,442 INFO L168 Benchmark]: Boogie Preprocessor took 878.56 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 109.3 MB). Peak memory consumption was 109.3 MB. Max. memory is 7.1 GB. [2018-11-06 19:49:07,442 INFO L168 Benchmark]: RCFGBuilder took 16022.01 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 307.2 MB). Free memory was 2.1 GB in the beginning and 2.4 GB in the end (delta: -383.6 MB). Peak memory consumption was 807.0 MB. Max. memory is 7.1 GB. [2018-11-06 19:49:07,444 INFO L168 Benchmark]: TraceAbstraction took 210509.52 ms. Allocated memory was 2.7 GB in the beginning and 3.6 GB in the end (delta: 890.2 MB). Free memory was 2.4 GB in the beginning and 1.2 GB in the end (delta: 1.2 GB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. [2018-11-06 19:49:07,450 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 3657.88 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 401.6 MB). Peak memory consumption was 401.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 1030.74 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 867.2 MB). Free memory was 1.0 GB in the beginning and 2.2 GB in the end (delta: -1.2 GB). Peak memory consumption was 99.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 878.56 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 109.3 MB). Peak memory consumption was 109.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 16022.01 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 307.2 MB). Free memory was 2.1 GB in the beginning and 2.4 GB in the end (delta: -383.6 MB). Peak memory consumption was 807.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 210509.52 ms. Allocated memory was 2.7 GB in the beginning and 3.6 GB in the end (delta: 890.2 MB). Free memory was 2.4 GB in the beginning and 1.2 GB in the end (delta: 1.2 GB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 82]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 82). Cancelled while BasicCegarLoop was constructing difference of abstraction (175614states) and FLOYD_HOARE automaton (currently 5 states, 5 states before enhancement),while ReachableStatesComputation was computing reachable states (290150 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1749 locations, 1 error locations. TIMEOUT Result, 210.4s OverallTime, 8 OverallIterations, 4 TraceHistogramMax, 190.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 8901 SDtfs, 63862 SDslu, 4691 SDs, 0 SdLazy, 99944 SolverSat, 28315 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 155.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1977 GetRequests, 1933 SyntacticMatches, 6 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 4.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=175614occurred in iteration=7, 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: 6.7s AutomataMinimizationTime, 7 MinimizatonAttempts, 156383 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 8.1s InterpolantComputationTime, 5240 NumberOfCodeBlocks, 5240 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 5228 ConstructedInterpolants, 0 QuantifiedInterpolants, 14178916 SizeOfPredicates, 5 NumberOfNonLiveVariables, 2280 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 12 InterpolantComputations, 8 PerfectInterpolantSequences, 2311/2449 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown