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/Problem19_label47_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 18:42:36,143 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 18:42:36,145 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 18:42:36,158 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 18:42:36,159 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 18:42:36,160 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 18:42:36,161 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 18:42:36,163 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 18:42:36,165 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 18:42:36,166 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 18:42:36,167 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 18:42:36,167 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 18:42:36,168 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 18:42:36,169 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 18:42:36,170 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 18:42:36,171 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 18:42:36,172 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 18:42:36,174 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 18:42:36,176 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 18:42:36,177 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 18:42:36,178 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 18:42:36,179 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 18:42:36,182 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-23 18:42:36,182 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-23 18:42:36,182 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-23 18:42:36,183 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-23 18:42:36,184 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-23 18:42:36,185 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-23 18:42:36,186 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-23 18:42:36,187 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-23 18:42:36,187 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-23 18:42:36,188 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-23 18:42:36,191 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-23 18:42:36,217 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 18:42:36,217 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 18:42:36,218 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 18:42:36,218 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-23 18:42:36,221 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-23 18:42:36,221 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-23 18:42:36,222 INFO L133 SettingsManager]: * Use SBE=true [2018-10-23 18:42:36,223 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 18:42:36,223 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 18:42:36,223 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 18:42:36,223 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 18:42:36,224 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 18:42:36,224 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 18:42:36,224 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 18:42:36,224 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 18:42:36,224 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 18:42:36,225 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 18:42:36,225 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 18:42:36,225 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 18:42:36,225 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 18:42:36,225 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 18:42:36,225 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 18:42:36,226 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 18:42:36,226 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-23 18:42:36,226 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 18:42:36,226 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 18:42:36,226 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 18:42:36,227 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 18:42:36,298 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 18:42:36,314 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 18:42:36,318 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 18:42:36,320 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 18:42:36,320 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 18:42:36,321 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label47_false-unreach-call.c [2018-10-23 18:42:36,388 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/2c8948d60/adb2264e3f274a6d9605dfe064fe089d/FLAGb9a76cb58 [2018-10-23 18:42:37,296 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 18:42:37,298 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label47_false-unreach-call.c [2018-10-23 18:42:37,346 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/2c8948d60/adb2264e3f274a6d9605dfe064fe089d/FLAGb9a76cb58 [2018-10-23 18:42:37,364 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/2c8948d60/adb2264e3f274a6d9605dfe064fe089d [2018-10-23 18:42:37,376 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 18:42:37,380 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 18:42:37,382 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 18:42:37,382 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 18:42:37,386 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 18:42:37,387 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:42:37" (1/1) ... [2018-10-23 18:42:37,390 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c8889d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:37, skipping insertion in model container [2018-10-23 18:42:37,390 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:42:37" (1/1) ... [2018-10-23 18:42:37,401 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 18:42:37,653 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 18:42:39,611 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 18:42:39,617 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 18:42:40,761 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 18:42:40,813 INFO L193 MainTranslator]: Completed translation [2018-10-23 18:42:40,814 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:40 WrapperNode [2018-10-23 18:42:40,814 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 18:42:40,815 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 18:42:40,815 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 18:42:40,815 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 18:42:40,825 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:40" (1/1) ... [2018-10-23 18:42:40,920 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:40" (1/1) ... [2018-10-23 18:42:41,911 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 18:42:41,912 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 18:42:41,912 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 18:42:41,912 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 18:42:41,920 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:40" (1/1) ... [2018-10-23 18:42:41,920 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:40" (1/1) ... [2018-10-23 18:42:42,045 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:40" (1/1) ... [2018-10-23 18:42:42,045 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:40" (1/1) ... [2018-10-23 18:42:42,380 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:40" (1/1) ... [2018-10-23 18:42:42,432 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:40" (1/1) ... [2018-10-23 18:42:42,543 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:40" (1/1) ... [2018-10-23 18:42:42,656 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 18:42:42,657 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 18:42:42,657 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 18:42:42,657 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 18:42:42,658 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:40" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 18:42:42,723 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-23 18:42:42,723 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 18:42:42,724 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 18:43:00,765 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 18:43:00,766 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:43:00 BoogieIcfgContainer [2018-10-23 18:43:00,766 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 18:43:00,767 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 18:43:00,768 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 18:43:00,771 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 18:43:00,771 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 06:42:37" (1/3) ... [2018-10-23 18:43:00,772 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@706cd4ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:43:00, skipping insertion in model container [2018-10-23 18:43:00,773 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:40" (2/3) ... [2018-10-23 18:43:00,773 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@706cd4ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:43:00, skipping insertion in model container [2018-10-23 18:43:00,773 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:43:00" (3/3) ... [2018-10-23 18:43:00,775 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label47_false-unreach-call.c [2018-10-23 18:43:00,784 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 18:43:00,795 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 18:43:00,813 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 18:43:00,864 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-23 18:43:00,865 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 18:43:00,866 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 18:43:00,866 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 18:43:00,866 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 18:43:00,866 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 18:43:00,866 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 18:43:00,866 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 18:43:00,867 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 18:43:00,924 INFO L276 IsEmpty]: Start isEmpty. Operand 1749 states. [2018-10-23 18:43:00,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-10-23 18:43:00,932 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:43:00,933 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:43:00,935 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:43:00,943 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:43:00,944 INFO L82 PathProgramCache]: Analyzing trace with hash 384191218, now seen corresponding path program 1 times [2018-10-23 18:43:00,946 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:43:00,946 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:43:00,997 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:43:00,997 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:43:00,997 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:43:01,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:43:01,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:43:01,204 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:43:01,205 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:43:01,209 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:43:01,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:43:01,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:43:01,514 INFO L87 Difference]: Start difference. First operand 1749 states. Second operand 4 states. [2018-10-23 18:43:30,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:43:30,198 INFO L93 Difference]: Finished difference Result 6414 states and 12256 transitions. [2018-10-23 18:43:30,199 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:43:30,201 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2018-10-23 18:43:30,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:43:30,260 INFO L225 Difference]: With dead ends: 6414 [2018-10-23 18:43:30,260 INFO L226 Difference]: Without dead ends: 4658 [2018-10-23 18:43:30,271 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 [2018-10-23 18:43:30,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4658 states. [2018-10-23 18:43:30,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4658 to 4577. [2018-10-23 18:43:30,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4577 states. [2018-10-23 18:43:30,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4577 states to 4577 states and 7450 transitions. [2018-10-23 18:43:30,590 INFO L78 Accepts]: Start accepts. Automaton has 4577 states and 7450 transitions. Word has length 9 [2018-10-23 18:43:30,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:43:30,590 INFO L481 AbstractCegarLoop]: Abstraction has 4577 states and 7450 transitions. [2018-10-23 18:43:30,590 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:43:30,591 INFO L276 IsEmpty]: Start isEmpty. Operand 4577 states and 7450 transitions. [2018-10-23 18:43:30,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2018-10-23 18:43:30,595 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:43:30,595 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-23 18:43:30,596 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:43:30,597 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:43:30,597 INFO L82 PathProgramCache]: Analyzing trace with hash -1234321850, now seen corresponding path program 1 times [2018-10-23 18:43:30,597 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:43:30,597 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:43:30,598 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:43:30,599 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:43:30,599 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:43:30,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:43:31,076 WARN L179 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-10-23 18:43:31,627 WARN L179 SmtUtils]: Spent 498.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 18 [2018-10-23 18:43:31,851 WARN L179 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 23 [2018-10-23 18:43:31,965 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:43:31,965 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:43:31,965 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-23 18:43:31,967 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 18:43:31,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 18:43:31,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-23 18:43:31,968 INFO L87 Difference]: Start difference. First operand 4577 states and 7450 transitions. Second operand 6 states. [2018-10-23 18:43:32,108 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-10-23 18:44:04,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:44:04,685 INFO L93 Difference]: Finished difference Result 17372 states and 27392 transitions. [2018-10-23 18:44:04,685 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-23 18:44:04,686 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 81 [2018-10-23 18:44:04,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:44:04,745 INFO L225 Difference]: With dead ends: 17372 [2018-10-23 18:44:04,745 INFO L226 Difference]: Without dead ends: 12797 [2018-10-23 18:44:04,753 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2018-10-23 18:44:04,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12797 states. [2018-10-23 18:44:04,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12797 to 11422. [2018-10-23 18:44:04,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11422 states. [2018-10-23 18:44:04,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11422 states to 11422 states and 16533 transitions. [2018-10-23 18:44:04,961 INFO L78 Accepts]: Start accepts. Automaton has 11422 states and 16533 transitions. Word has length 81 [2018-10-23 18:44:04,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:44:04,962 INFO L481 AbstractCegarLoop]: Abstraction has 11422 states and 16533 transitions. [2018-10-23 18:44:04,962 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 18:44:04,962 INFO L276 IsEmpty]: Start isEmpty. Operand 11422 states and 16533 transitions. [2018-10-23 18:44:04,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2018-10-23 18:44:04,980 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:44:04,981 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:44:04,981 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:44:04,981 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:44:04,982 INFO L82 PathProgramCache]: Analyzing trace with hash -2116023050, now seen corresponding path program 1 times [2018-10-23 18:44:04,982 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:44:04,983 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:44:04,984 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:44:04,984 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:44:04,984 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:44:05,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:44:05,857 WARN L179 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 18 [2018-10-23 18:44:06,477 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-10-23 18:44:06,477 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:44:06,478 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-23 18:44:06,479 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-23 18:44:06,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-23 18:44:06,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-23 18:44:06,480 INFO L87 Difference]: Start difference. First operand 11422 states and 16533 transitions. Second operand 7 states. [2018-10-23 18:44:06,805 WARN L179 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 21 [2018-10-23 18:44:42,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:44:42,961 INFO L93 Difference]: Finished difference Result 33784 states and 50256 transitions. [2018-10-23 18:44:42,965 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 18:44:42,965 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 286 [2018-10-23 18:44:42,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:44:43,056 INFO L225 Difference]: With dead ends: 33784 [2018-10-23 18:44:43,057 INFO L226 Difference]: Without dead ends: 22364 [2018-10-23 18:44:43,071 INFO L605 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 [2018-10-23 18:44:43,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22364 states. [2018-10-23 18:44:43,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22364 to 18262. [2018-10-23 18:44:43,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18262 states. [2018-10-23 18:44:43,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18262 states to 18262 states and 23704 transitions. [2018-10-23 18:44:43,414 INFO L78 Accepts]: Start accepts. Automaton has 18262 states and 23704 transitions. Word has length 286 [2018-10-23 18:44:43,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:44:43,415 INFO L481 AbstractCegarLoop]: Abstraction has 18262 states and 23704 transitions. [2018-10-23 18:44:43,415 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-23 18:44:43,416 INFO L276 IsEmpty]: Start isEmpty. Operand 18262 states and 23704 transitions. [2018-10-23 18:44:43,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2018-10-23 18:44:43,419 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:44:43,420 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:44:43,420 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:44:43,420 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:44:43,421 INFO L82 PathProgramCache]: Analyzing trace with hash -754898288, now seen corresponding path program 1 times [2018-10-23 18:44:43,421 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:44:43,421 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:44:43,422 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:44:43,422 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:44:43,422 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:44:43,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:44:43,825 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 5 [2018-10-23 18:44:43,967 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2018-10-23 18:44:43,968 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 18:44:43,968 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 18:44:43,982 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:44:44,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:44:44,098 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 18:44:44,242 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:44:44,273 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 18:44:44,273 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-10-23 18:44:44,275 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:44:44,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:44:44,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:44:44,276 INFO L87 Difference]: Start difference. First operand 18262 states and 23704 transitions. Second operand 4 states. [2018-10-23 18:45:09,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:45:09,995 INFO L93 Difference]: Finished difference Result 65436 states and 86915 transitions. [2018-10-23 18:45:09,996 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:45:09,996 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 314 [2018-10-23 18:45:09,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:45:10,095 INFO L225 Difference]: With dead ends: 65436 [2018-10-23 18:45:10,095 INFO L226 Difference]: Without dead ends: 47176 [2018-10-23 18:45:10,125 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 314 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:45:10,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47176 states. [2018-10-23 18:45:10,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47176 to 29184. [2018-10-23 18:45:10,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29184 states. [2018-10-23 18:45:10,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29184 states to 29184 states and 38898 transitions. [2018-10-23 18:45:10,748 INFO L78 Accepts]: Start accepts. Automaton has 29184 states and 38898 transitions. Word has length 314 [2018-10-23 18:45:10,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:45:10,749 INFO L481 AbstractCegarLoop]: Abstraction has 29184 states and 38898 transitions. [2018-10-23 18:45:10,749 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:45:10,749 INFO L276 IsEmpty]: Start isEmpty. Operand 29184 states and 38898 transitions. [2018-10-23 18:45:10,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2018-10-23 18:45:10,755 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:45:10,756 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:45:10,756 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:45:10,757 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:45:10,757 INFO L82 PathProgramCache]: Analyzing trace with hash 220115451, now seen corresponding path program 1 times [2018-10-23 18:45:10,757 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:45:10,757 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:45:10,758 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:45:10,759 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:45:10,759 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:45:10,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:45:11,156 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 7 DAG size of output: 4 [2018-10-23 18:45:11,252 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 110 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:45:11,252 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:45:11,252 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 18:45:11,253 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:45:11,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:45:11,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:45:11,254 INFO L87 Difference]: Start difference. First operand 29184 states and 38898 transitions. Second operand 4 states. [2018-10-23 18:45:32,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:45:32,833 INFO L93 Difference]: Finished difference Result 77509 states and 105464 transitions. [2018-10-23 18:45:32,834 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:45:32,834 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 343 [2018-10-23 18:45:32,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:45:32,904 INFO L225 Difference]: With dead ends: 77509 [2018-10-23 18:45:32,904 INFO L226 Difference]: Without dead ends: 46960 [2018-10-23 18:45:32,942 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:45:32,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46960 states. [2018-10-23 18:45:33,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46960 to 46955. [2018-10-23 18:45:33,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46955 states. [2018-10-23 18:45:33,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46955 states to 46955 states and 59933 transitions. [2018-10-23 18:45:33,461 INFO L78 Accepts]: Start accepts. Automaton has 46955 states and 59933 transitions. Word has length 343 [2018-10-23 18:45:33,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:45:33,461 INFO L481 AbstractCegarLoop]: Abstraction has 46955 states and 59933 transitions. [2018-10-23 18:45:33,461 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:45:33,462 INFO L276 IsEmpty]: Start isEmpty. Operand 46955 states and 59933 transitions. [2018-10-23 18:45:33,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2018-10-23 18:45:33,468 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:45:33,468 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:45:33,468 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:45:33,469 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:45:33,469 INFO L82 PathProgramCache]: Analyzing trace with hash -1285651964, now seen corresponding path program 1 times [2018-10-23 18:45:33,469 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:45:33,469 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:45:33,470 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:45:33,470 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:45:33,470 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:45:33,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:45:34,269 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 13 proven. 65 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2018-10-23 18:45:34,269 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 18:45:34,269 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 18:45:34,285 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:45:34,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:45:34,396 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 18:45:34,532 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 133 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:45:34,555 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 18:45:34,555 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2018-10-23 18:45:34,557 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 18:45:34,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 18:45:34,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-10-23 18:45:34,557 INFO L87 Difference]: Start difference. First operand 46955 states and 59933 transitions. Second operand 5 states. [2018-10-23 18:46:09,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:46:09,072 INFO L93 Difference]: Finished difference Result 176219 states and 226714 transitions. [2018-10-23 18:46:09,072 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 18:46:09,073 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 368 [2018-10-23 18:46:09,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:46:09,244 INFO L225 Difference]: With dead ends: 176219 [2018-10-23 18:46:09,244 INFO L226 Difference]: Without dead ends: 122429 [2018-10-23 18:46:09,297 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 369 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-23 18:46:09,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122429 states. [2018-10-23 18:46:10,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122429 to 122343. [2018-10-23 18:46:10,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122343 states. [2018-10-23 18:46:11,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122343 states to 122343 states and 141489 transitions. [2018-10-23 18:46:11,112 INFO L78 Accepts]: Start accepts. Automaton has 122343 states and 141489 transitions. Word has length 368 [2018-10-23 18:46:11,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:46:11,113 INFO L481 AbstractCegarLoop]: Abstraction has 122343 states and 141489 transitions. [2018-10-23 18:46:11,113 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 18:46:11,113 INFO L276 IsEmpty]: Start isEmpty. Operand 122343 states and 141489 transitions. [2018-10-23 18:46:11,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 466 [2018-10-23 18:46:11,122 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:46:11,123 INFO L375 BasicCegarLoop]: trace histogram [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, 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] [2018-10-23 18:46:11,123 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:46:11,123 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:46:11,124 INFO L82 PathProgramCache]: Analyzing trace with hash -1102712714, now seen corresponding path program 1 times [2018-10-23 18:46:11,124 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:46:11,124 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:46:11,125 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:46:11,125 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:46:11,125 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:46:11,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:46:11,510 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2018-10-23 18:46:11,511 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:46:11,511 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:46:11,512 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 18:46:11,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 18:46:11,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 18:46:11,513 INFO L87 Difference]: Start difference. First operand 122343 states and 141489 transitions. Second operand 3 states. [2018-10-23 18:46:25,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:46:25,805 INFO L93 Difference]: Finished difference Result 284383 states and 333228 transitions. [2018-10-23 18:46:25,806 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 18:46:25,806 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 465 [2018-10-23 18:46:25,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:46:26,045 INFO L225 Difference]: With dead ends: 284383 [2018-10-23 18:46:26,045 INFO L226 Difference]: Without dead ends: 163408 [2018-10-23 18:46:26,141 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 18:46:26,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163408 states. [2018-10-23 18:46:28,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163408 to 163335. [2018-10-23 18:46:28,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163335 states. [2018-10-23 18:46:28,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163335 states to 163335 states and 186585 transitions. [2018-10-23 18:46:28,406 INFO L78 Accepts]: Start accepts. Automaton has 163335 states and 186585 transitions. Word has length 465 [2018-10-23 18:46:28,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:46:28,407 INFO L481 AbstractCegarLoop]: Abstraction has 163335 states and 186585 transitions. [2018-10-23 18:46:28,407 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 18:46:28,408 INFO L276 IsEmpty]: Start isEmpty. Operand 163335 states and 186585 transitions. [2018-10-23 18:46:28,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 711 [2018-10-23 18:46:28,430 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:46:28,431 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:46:28,431 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:46:28,432 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:46:28,432 INFO L82 PathProgramCache]: Analyzing trace with hash 1420902701, now seen corresponding path program 1 times [2018-10-23 18:46:28,432 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:46:28,432 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:46:28,433 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:46:28,433 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:46:28,433 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:46:28,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:46:29,061 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2018-10-23 18:46:29,061 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:46:29,061 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:46:29,062 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 18:46:29,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 18:46:29,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 18:46:29,063 INFO L87 Difference]: Start difference. First operand 163335 states and 186585 transitions. Second operand 3 states. Received shutdown request... [2018-10-23 18:46:35,478 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 18:46:35,479 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 18:46:35,483 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 18:46:35,484 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 06:46:35 BoogieIcfgContainer [2018-10-23 18:46:35,484 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 18:46:35,485 INFO L168 Benchmark]: Toolchain (without parser) took 238107.67 ms. Allocated memory was 1.5 GB in the beginning and 3.5 GB in the end (delta: 2.0 GB). Free memory was 1.4 GB in the beginning and 2.4 GB in the end (delta: -975.2 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-10-23 18:46:35,486 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-23 18:46:35,486 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3432.89 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 979.1 MB in the end (delta: 401.7 MB). Peak memory consumption was 401.7 MB. Max. memory is 7.1 GB. [2018-10-23 18:46:35,487 INFO L168 Benchmark]: Boogie Procedure Inliner took 1096.14 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 848.8 MB). Free memory was 979.1 MB in the beginning and 2.1 GB in the end (delta: -1.1 GB). Peak memory consumption was 106.6 MB. Max. memory is 7.1 GB. [2018-10-23 18:46:35,490 INFO L168 Benchmark]: Boogie Preprocessor took 744.80 ms. Allocated memory is still 2.4 GB. Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 114.5 MB). Peak memory consumption was 114.5 MB. Max. memory is 7.1 GB. [2018-10-23 18:46:35,491 INFO L168 Benchmark]: RCFGBuilder took 18109.82 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 281.0 MB). Free memory was 2.0 GB in the beginning and 1.5 GB in the end (delta: 508.7 MB). Peak memory consumption was 789.7 MB. Max. memory is 7.1 GB. [2018-10-23 18:46:35,492 INFO L168 Benchmark]: TraceAbstraction took 214716.53 ms. Allocated memory was 2.6 GB in the beginning and 3.5 GB in the end (delta: 899.7 MB). Free memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: -860.4 MB). Peak memory consumption was 39.3 MB. Max. memory is 7.1 GB. [2018-10-23 18:46:35,499 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 3432.89 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 979.1 MB in the end (delta: 401.7 MB). Peak memory consumption was 401.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 1096.14 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 848.8 MB). Free memory was 979.1 MB in the beginning and 2.1 GB in the end (delta: -1.1 GB). Peak memory consumption was 106.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 744.80 ms. Allocated memory is still 2.4 GB. Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 114.5 MB). Peak memory consumption was 114.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 18109.82 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 281.0 MB). Free memory was 2.0 GB in the beginning and 1.5 GB in the end (delta: 508.7 MB). Peak memory consumption was 789.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 214716.53 ms. Allocated memory was 2.6 GB in the beginning and 3.5 GB in the end (delta: 899.7 MB). Free memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: -860.4 MB). Peak memory consumption was 39.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 40]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 40). Cancelled while BasicCegarLoop was constructing difference of abstraction (163335states) and FLOYD_HOARE automaton (currently 3 states, 3 states before enhancement),while ReachableStatesComputation was computing reachable states (69772 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1749 locations, 1 error locations. TIMEOUT Result, 214.6s OverallTime, 8 OverallIterations, 3 TraceHistogramMax, 201.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 14141 SDtfs, 41842 SDslu, 3810 SDs, 0 SdLazy, 81562 SolverSat, 21555 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 173.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 725 GetRequests, 693 SyntacticMatches, 5 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 3.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=163335occurred 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: 6.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 23714 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 4.3s InterpolantComputationTime, 3258 NumberOfCodeBlocks, 3258 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 3248 ConstructedInterpolants, 0 QuantifiedInterpolants, 3126261 SizeOfPredicates, 0 NumberOfNonLiveVariables, 860 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 10 InterpolantComputations, 8 PerfectInterpolantSequences, 1011/1080 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown