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/Problem13_label07_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 14:07:27,139 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 14:07:27,141 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 14:07:27,153 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 14:07:27,154 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 14:07:27,155 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 14:07:27,156 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 14:07:27,158 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 14:07:27,160 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 14:07:27,161 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 14:07:27,162 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 14:07:27,162 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 14:07:27,163 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 14:07:27,164 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 14:07:27,165 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 14:07:27,166 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 14:07:27,167 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 14:07:27,169 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 14:07:27,171 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 14:07:27,172 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 14:07:27,173 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 14:07:27,175 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 14:07:27,177 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 14:07:27,177 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 14:07:27,178 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 14:07:27,179 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 14:07:27,180 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 14:07:27,181 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 14:07:27,181 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 14:07:27,182 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 14:07:27,183 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 14:07:27,183 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-24 14:07:27,184 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 14:07:27,189 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 14:07:27,190 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 14:07:27,191 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 14:07:27,191 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 [2018-10-24 14:07:27,214 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 14:07:27,215 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 14:07:27,216 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 14:07:27,216 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 14:07:27,216 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 14:07:27,217 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 14:07:27,218 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 14:07:27,218 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 14:07:27,218 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 14:07:27,218 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 14:07:27,219 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 14:07:27,219 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 14:07:27,219 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 14:07:27,219 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 14:07:27,220 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 14:07:27,220 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 14:07:27,220 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 14:07:27,220 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 14:07:27,220 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 14:07:27,221 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 14:07:27,221 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 14:07:27,221 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 14:07:27,221 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 14:07:27,221 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 14:07:27,222 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 14:07:27,223 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 14:07:27,223 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 14:07:27,223 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 14:07:27,279 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 14:07:27,292 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 14:07:27,296 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 14:07:27,298 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 14:07:27,298 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 14:07:27,299 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label07_false-unreach-call.c [2018-10-24 14:07:27,359 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/f7d3f7315/a0500140abbf43a5bf996191ad06a649/FLAGed71ccc3b [2018-10-24 14:07:28,205 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 14:07:28,206 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label07_false-unreach-call.c [2018-10-24 14:07:28,247 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/f7d3f7315/a0500140abbf43a5bf996191ad06a649/FLAGed71ccc3b [2018-10-24 14:07:28,269 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/f7d3f7315/a0500140abbf43a5bf996191ad06a649 [2018-10-24 14:07:28,283 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 14:07:28,285 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 14:07:28,287 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 14:07:28,287 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 14:07:28,292 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 14:07:28,293 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:07:28" (1/1) ... [2018-10-24 14:07:28,296 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b8aa611 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:07:28, skipping insertion in model container [2018-10-24 14:07:28,297 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:07:28" (1/1) ... [2018-10-24 14:07:28,309 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 14:07:28,520 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 14:07:30,077 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 14:07:30,082 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 14:07:30,809 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 14:07:30,850 INFO L193 MainTranslator]: Completed translation [2018-10-24 14:07:30,851 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:07:30 WrapperNode [2018-10-24 14:07:30,851 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 14:07:30,852 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 14:07:30,853 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 14:07:30,855 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 14:07:30,867 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:07:30" (1/1) ... [2018-10-24 14:07:30,945 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:07:30" (1/1) ... [2018-10-24 14:07:31,732 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 14:07:31,732 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 14:07:31,732 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 14:07:31,733 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 14:07:31,743 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:07:30" (1/1) ... [2018-10-24 14:07:31,744 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:07:30" (1/1) ... [2018-10-24 14:07:31,813 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:07:30" (1/1) ... [2018-10-24 14:07:31,814 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:07:30" (1/1) ... [2018-10-24 14:07:31,969 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:07:30" (1/1) ... [2018-10-24 14:07:32,007 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:07:30" (1/1) ... [2018-10-24 14:07:32,080 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:07:30" (1/1) ... [2018-10-24 14:07:32,158 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 14:07:32,159 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 14:07:32,159 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 14:07:32,159 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 14:07:32,160 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:07:30" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 14:07:32,237 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-24 14:07:32,237 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 14:07:32,237 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 14:07:47,030 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 14:07:47,031 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:07:47 BoogieIcfgContainer [2018-10-24 14:07:47,031 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 14:07:47,032 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 14:07:47,032 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 14:07:47,035 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 14:07:47,037 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 02:07:28" (1/3) ... [2018-10-24 14:07:47,038 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cdfd378 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:07:47, skipping insertion in model container [2018-10-24 14:07:47,038 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:07:30" (2/3) ... [2018-10-24 14:07:47,038 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cdfd378 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:07:47, skipping insertion in model container [2018-10-24 14:07:47,039 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:07:47" (3/3) ... [2018-10-24 14:07:47,042 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label07_false-unreach-call.c [2018-10-24 14:07:47,052 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 14:07:47,068 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 14:07:47,085 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 14:07:47,143 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 14:07:47,144 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 14:07:47,144 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 14:07:47,144 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 14:07:47,144 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 14:07:47,144 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 14:07:47,144 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 14:07:47,145 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 14:07:47,145 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 14:07:47,182 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states. [2018-10-24 14:07:47,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-10-24 14:07:47,193 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:07:47,194 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] [2018-10-24 14:07:47,196 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:07:47,202 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:07:47,203 INFO L82 PathProgramCache]: Analyzing trace with hash 682595178, now seen corresponding path program 1 times [2018-10-24 14:07:47,205 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:07:47,206 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:07:47,264 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:07:47,265 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:07:47,265 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:07:47,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:07:47,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:07:47,586 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:07:47,586 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:07:47,592 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:07:47,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:07:47,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:07:47,612 INFO L87 Difference]: Start difference. First operand 1099 states. Second operand 4 states. [2018-10-24 14:08:04,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:08:04,080 INFO L93 Difference]: Finished difference Result 3896 states and 7286 transitions. [2018-10-24 14:08:04,081 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:08:04,082 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2018-10-24 14:08:04,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:08:04,126 INFO L225 Difference]: With dead ends: 3896 [2018-10-24 14:08:04,126 INFO L226 Difference]: Without dead ends: 2790 [2018-10-24 14:08:04,136 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:08:04,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2790 states. [2018-10-24 14:08:04,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2790 to 1945. [2018-10-24 14:08:04,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1945 states. [2018-10-24 14:08:04,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1945 states to 1945 states and 3412 transitions. [2018-10-24 14:08:04,295 INFO L78 Accepts]: Start accepts. Automaton has 1945 states and 3412 transitions. Word has length 22 [2018-10-24 14:08:04,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:08:04,297 INFO L481 AbstractCegarLoop]: Abstraction has 1945 states and 3412 transitions. [2018-10-24 14:08:04,297 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:08:04,297 INFO L276 IsEmpty]: Start isEmpty. Operand 1945 states and 3412 transitions. [2018-10-24 14:08:04,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-10-24 14:08:04,301 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:08:04,302 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 14:08:04,303 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:08:04,303 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:08:04,303 INFO L82 PathProgramCache]: Analyzing trace with hash -267031502, now seen corresponding path program 1 times [2018-10-24 14:08:04,303 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:08:04,304 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:08:04,305 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:08:04,305 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:08:04,305 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:08:04,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:08:05,678 WARN L179 SmtUtils]: Spent 954.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 27 [2018-10-24 14:08:05,958 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:08:05,958 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:08:05,958 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:08:05,960 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 14:08:05,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 14:08:05,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-24 14:08:05,961 INFO L87 Difference]: Start difference. First operand 1945 states and 3412 transitions. Second operand 5 states. [2018-10-24 14:08:24,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:08:24,010 INFO L93 Difference]: Finished difference Result 7061 states and 12475 transitions. [2018-10-24 14:08:24,010 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 14:08:24,011 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 88 [2018-10-24 14:08:24,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:08:24,036 INFO L225 Difference]: With dead ends: 7061 [2018-10-24 14:08:24,037 INFO L226 Difference]: Without dead ends: 5118 [2018-10-24 14:08:24,040 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-24 14:08:24,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5118 states. [2018-10-24 14:08:24,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5118 to 5117. [2018-10-24 14:08:24,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5117 states. [2018-10-24 14:08:24,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5117 states to 5117 states and 7612 transitions. [2018-10-24 14:08:24,143 INFO L78 Accepts]: Start accepts. Automaton has 5117 states and 7612 transitions. Word has length 88 [2018-10-24 14:08:24,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:08:24,144 INFO L481 AbstractCegarLoop]: Abstraction has 5117 states and 7612 transitions. [2018-10-24 14:08:24,144 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 14:08:24,144 INFO L276 IsEmpty]: Start isEmpty. Operand 5117 states and 7612 transitions. [2018-10-24 14:08:24,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-10-24 14:08:24,150 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:08:24,150 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 14:08:24,150 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:08:24,151 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:08:24,151 INFO L82 PathProgramCache]: Analyzing trace with hash 1398070453, now seen corresponding path program 1 times [2018-10-24 14:08:24,151 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:08:24,151 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:08:24,152 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:08:24,152 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:08:24,153 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:08:24,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:08:24,411 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-10-24 14:08:24,412 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:08:24,412 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 14:08:24,422 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:08:24,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:08:24,496 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:08:24,649 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-10-24 14:08:24,683 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 14:08:24,684 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2018-10-24 14:08:24,685 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 14:08:24,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 14:08:24,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 14:08:24,691 INFO L87 Difference]: Start difference. First operand 5117 states and 7612 transitions. Second operand 5 states. [2018-10-24 14:08:37,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:08:37,119 INFO L93 Difference]: Finished difference Result 15794 states and 24946 transitions. [2018-10-24 14:08:37,119 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:08:37,120 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 148 [2018-10-24 14:08:37,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:08:37,171 INFO L225 Difference]: With dead ends: 15794 [2018-10-24 14:08:37,171 INFO L226 Difference]: Without dead ends: 11467 [2018-10-24 14:08:37,178 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 147 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 14:08:37,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11467 states. [2018-10-24 14:08:37,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11467 to 11436. [2018-10-24 14:08:37,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11436 states. [2018-10-24 14:08:37,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11436 states to 11436 states and 15909 transitions. [2018-10-24 14:08:37,392 INFO L78 Accepts]: Start accepts. Automaton has 11436 states and 15909 transitions. Word has length 148 [2018-10-24 14:08:37,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:08:37,393 INFO L481 AbstractCegarLoop]: Abstraction has 11436 states and 15909 transitions. [2018-10-24 14:08:37,393 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 14:08:37,393 INFO L276 IsEmpty]: Start isEmpty. Operand 11436 states and 15909 transitions. [2018-10-24 14:08:37,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2018-10-24 14:08:37,400 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:08:37,400 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:08:37,400 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:08:37,401 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:08:37,401 INFO L82 PathProgramCache]: Analyzing trace with hash 801482757, now seen corresponding path program 1 times [2018-10-24 14:08:37,401 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:08:37,401 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:08:37,402 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:08:37,402 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:08:37,403 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:08:37,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:08:37,838 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 135 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:08:37,839 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:08:37,839 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:08:37,840 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:08:37,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:08:37,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:08:37,840 INFO L87 Difference]: Start difference. First operand 11436 states and 15909 transitions. Second operand 4 states. [2018-10-24 14:08:50,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:08:50,545 INFO L93 Difference]: Finished difference Result 28418 states and 40800 transitions. [2018-10-24 14:08:50,553 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:08:50,553 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 218 [2018-10-24 14:08:50,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:08:50,602 INFO L225 Difference]: With dead ends: 28418 [2018-10-24 14:08:50,602 INFO L226 Difference]: Without dead ends: 17772 [2018-10-24 14:08:50,617 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:08:50,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17772 states. [2018-10-24 14:08:50,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17772 to 17746. [2018-10-24 14:08:50,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17746 states. [2018-10-24 14:08:50,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17746 states to 17746 states and 23792 transitions. [2018-10-24 14:08:50,865 INFO L78 Accepts]: Start accepts. Automaton has 17746 states and 23792 transitions. Word has length 218 [2018-10-24 14:08:50,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:08:50,866 INFO L481 AbstractCegarLoop]: Abstraction has 17746 states and 23792 transitions. [2018-10-24 14:08:50,866 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:08:50,867 INFO L276 IsEmpty]: Start isEmpty. Operand 17746 states and 23792 transitions. [2018-10-24 14:08:50,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2018-10-24 14:08:50,874 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:08:50,874 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:08:50,874 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:08:50,875 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:08:50,875 INFO L82 PathProgramCache]: Analyzing trace with hash 809504239, now seen corresponding path program 1 times [2018-10-24 14:08:50,875 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:08:50,875 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:08:50,876 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:08:50,876 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:08:50,876 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:08:50,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:08:51,272 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2018-10-24 14:08:51,273 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:08:51,273 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-24 14:08:51,273 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 14:08:51,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 14:08:51,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 14:08:51,274 INFO L87 Difference]: Start difference. First operand 17746 states and 23792 transitions. Second operand 3 states. [2018-10-24 14:08:58,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:08:58,448 INFO L93 Difference]: Finished difference Result 50457 states and 68401 transitions. [2018-10-24 14:08:58,449 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 14:08:58,449 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 308 [2018-10-24 14:08:58,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:08:58,526 INFO L225 Difference]: With dead ends: 50457 [2018-10-24 14:08:58,526 INFO L226 Difference]: Without dead ends: 33501 [2018-10-24 14:08:58,553 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 14:08:58,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33501 states. [2018-10-24 14:08:59,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33501 to 33500. [2018-10-24 14:08:59,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33500 states. [2018-10-24 14:08:59,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33500 states to 33500 states and 42101 transitions. [2018-10-24 14:08:59,269 INFO L78 Accepts]: Start accepts. Automaton has 33500 states and 42101 transitions. Word has length 308 [2018-10-24 14:08:59,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:08:59,270 INFO L481 AbstractCegarLoop]: Abstraction has 33500 states and 42101 transitions. [2018-10-24 14:08:59,270 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 14:08:59,270 INFO L276 IsEmpty]: Start isEmpty. Operand 33500 states and 42101 transitions. [2018-10-24 14:08:59,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2018-10-24 14:08:59,282 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:08:59,283 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:08:59,283 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:08:59,283 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:08:59,284 INFO L82 PathProgramCache]: Analyzing trace with hash 751929461, now seen corresponding path program 1 times [2018-10-24 14:08:59,284 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:08:59,284 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:08:59,285 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:08:59,285 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:08:59,285 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:08:59,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:08:59,705 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 249 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2018-10-24 14:08:59,706 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:08:59,706 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:08:59,706 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:08:59,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:08:59,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:08:59,707 INFO L87 Difference]: Start difference. First operand 33500 states and 42101 transitions. Second operand 4 states. [2018-10-24 14:09:07,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:09:07,439 INFO L93 Difference]: Finished difference Result 71704 states and 91193 transitions. [2018-10-24 14:09:07,446 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:09:07,446 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 339 [2018-10-24 14:09:07,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:09:07,523 INFO L225 Difference]: With dead ends: 71704 [2018-10-24 14:09:07,523 INFO L226 Difference]: Without dead ends: 38994 [2018-10-24 14:09:07,562 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 [2018-10-24 14:09:07,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38994 states. [2018-10-24 14:09:08,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38994 to 38993. [2018-10-24 14:09:08,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38993 states. [2018-10-24 14:09:08,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38993 states to 38993 states and 46093 transitions. [2018-10-24 14:09:08,385 INFO L78 Accepts]: Start accepts. Automaton has 38993 states and 46093 transitions. Word has length 339 [2018-10-24 14:09:08,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:09:08,386 INFO L481 AbstractCegarLoop]: Abstraction has 38993 states and 46093 transitions. [2018-10-24 14:09:08,386 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:09:08,387 INFO L276 IsEmpty]: Start isEmpty. Operand 38993 states and 46093 transitions. [2018-10-24 14:09:08,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2018-10-24 14:09:08,408 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:09:08,408 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:09:08,408 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:09:08,409 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:09:08,409 INFO L82 PathProgramCache]: Analyzing trace with hash 11430192, now seen corresponding path program 1 times [2018-10-24 14:09:08,409 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:09:08,409 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:09:08,410 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:09:08,411 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:09:08,411 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:09:08,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:09:08,823 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 364 proven. 0 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2018-10-24 14:09:08,824 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:09:08,824 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:09:08,828 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 14:09:08,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 14:09:08,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 14:09:08,829 INFO L87 Difference]: Start difference. First operand 38993 states and 46093 transitions. Second operand 3 states. [2018-10-24 14:09:14,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:09:14,738 INFO L93 Difference]: Finished difference Result 77183 states and 91260 transitions. [2018-10-24 14:09:14,745 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 14:09:14,745 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 412 [2018-10-24 14:09:14,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:09:14,811 INFO L225 Difference]: With dead ends: 77183 [2018-10-24 14:09:14,811 INFO L226 Difference]: Without dead ends: 38980 [2018-10-24 14:09:14,837 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 [2018-10-24 14:09:14,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38980 states. [2018-10-24 14:09:15,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38980 to 38979. [2018-10-24 14:09:15,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38979 states. [2018-10-24 14:09:15,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38979 states to 38979 states and 43637 transitions. [2018-10-24 14:09:15,240 INFO L78 Accepts]: Start accepts. Automaton has 38979 states and 43637 transitions. Word has length 412 [2018-10-24 14:09:15,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:09:15,241 INFO L481 AbstractCegarLoop]: Abstraction has 38979 states and 43637 transitions. [2018-10-24 14:09:15,241 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 14:09:15,241 INFO L276 IsEmpty]: Start isEmpty. Operand 38979 states and 43637 transitions. [2018-10-24 14:09:15,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2018-10-24 14:09:15,261 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:09:15,261 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:09:15,262 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:09:15,262 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:09:15,262 INFO L82 PathProgramCache]: Analyzing trace with hash -1763756656, now seen corresponding path program 1 times [2018-10-24 14:09:15,262 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:09:15,262 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:09:15,263 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:09:15,263 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:09:15,264 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:09:15,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:09:15,800 WARN L179 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 7 [2018-10-24 14:09:16,043 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 361 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-10-24 14:09:16,044 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:09:16,044 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:09:16,045 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:09:16,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:09:16,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:09:16,045 INFO L87 Difference]: Start difference. First operand 38979 states and 43637 transitions. Second operand 4 states. [2018-10-24 14:09:23,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:09:23,847 INFO L93 Difference]: Finished difference Result 84261 states and 94220 transitions. [2018-10-24 14:09:23,853 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:09:23,853 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 414 [2018-10-24 14:09:23,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:09:23,913 INFO L225 Difference]: With dead ends: 84261 [2018-10-24 14:09:23,913 INFO L226 Difference]: Without dead ends: 46072 [2018-10-24 14:09:23,941 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:09:23,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46072 states. [2018-10-24 14:09:24,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46072 to 44495. [2018-10-24 14:09:24,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44495 states. [2018-10-24 14:09:24,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44495 states to 44495 states and 49698 transitions. [2018-10-24 14:09:24,424 INFO L78 Accepts]: Start accepts. Automaton has 44495 states and 49698 transitions. Word has length 414 [2018-10-24 14:09:24,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:09:24,425 INFO L481 AbstractCegarLoop]: Abstraction has 44495 states and 49698 transitions. [2018-10-24 14:09:24,425 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:09:24,425 INFO L276 IsEmpty]: Start isEmpty. Operand 44495 states and 49698 transitions. [2018-10-24 14:09:24,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 443 [2018-10-24 14:09:24,451 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:09:24,452 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 14:09:24,452 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:09:24,452 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:09:24,452 INFO L82 PathProgramCache]: Analyzing trace with hash 963684070, now seen corresponding path program 1 times [2018-10-24 14:09:24,453 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:09:24,453 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:09:24,453 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:09:24,454 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:09:24,454 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:09:24,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:09:24,900 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 256 proven. 91 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-10-24 14:09:24,900 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:09:24,901 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 14:09:24,908 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:09:25,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:09:25,051 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:09:25,957 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 347 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-10-24 14:09:25,980 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 14:09:25,980 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2018-10-24 14:09:25,981 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 14:09:25,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 14:09:25,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-10-24 14:09:25,982 INFO L87 Difference]: Start difference. First operand 44495 states and 49698 transitions. Second operand 7 states. [2018-10-24 14:09:51,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:09:51,907 INFO L93 Difference]: Finished difference Result 182888 states and 202880 transitions. [2018-10-24 14:09:51,908 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-24 14:09:51,909 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 442 [2018-10-24 14:09:51,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:09:52,029 INFO L225 Difference]: With dead ends: 182888 [2018-10-24 14:09:52,029 INFO L226 Difference]: Without dead ends: 112285 [2018-10-24 14:09:52,072 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 453 GetRequests, 440 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2018-10-24 14:09:52,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112285 states. [2018-10-24 14:09:52,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112285 to 102014. [2018-10-24 14:09:52,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102014 states. [2018-10-24 14:09:52,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102014 states to 102014 states and 108393 transitions. [2018-10-24 14:09:52,970 INFO L78 Accepts]: Start accepts. Automaton has 102014 states and 108393 transitions. Word has length 442 [2018-10-24 14:09:52,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:09:52,970 INFO L481 AbstractCegarLoop]: Abstraction has 102014 states and 108393 transitions. [2018-10-24 14:09:52,970 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 14:09:52,970 INFO L276 IsEmpty]: Start isEmpty. Operand 102014 states and 108393 transitions. [2018-10-24 14:09:53,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 662 [2018-10-24 14:09:53,002 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:09:53,002 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:09:53,003 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:09:53,003 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:09:53,003 INFO L82 PathProgramCache]: Analyzing trace with hash -196318809, now seen corresponding path program 1 times [2018-10-24 14:09:53,003 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:09:53,003 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:09:53,004 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:09:53,004 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:09:53,004 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:09:53,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:09:54,079 INFO L134 CoverageAnalysis]: Checked inductivity of 671 backedges. 530 proven. 0 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2018-10-24 14:09:54,079 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:09:54,080 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:09:54,080 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 14:09:54,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 14:09:54,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 14:09:54,081 INFO L87 Difference]: Start difference. First operand 102014 states and 108393 transitions. Second operand 5 states. [2018-10-24 14:10:11,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:10:11,748 INFO L93 Difference]: Finished difference Result 342967 states and 364431 transitions. [2018-10-24 14:10:11,749 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 14:10:11,749 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 661 [2018-10-24 14:10:11,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:10:12,027 INFO L225 Difference]: With dead ends: 342967 [2018-10-24 14:10:12,027 INFO L226 Difference]: Without dead ends: 240162 [2018-10-24 14:10:12,078 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 14:10:12,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240162 states. [2018-10-24 14:10:13,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240162 to 221867. [2018-10-24 14:10:13,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221867 states. [2018-10-24 14:10:14,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221867 states to 221867 states and 234064 transitions. [2018-10-24 14:10:14,005 INFO L78 Accepts]: Start accepts. Automaton has 221867 states and 234064 transitions. Word has length 661 [2018-10-24 14:10:14,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:10:14,006 INFO L481 AbstractCegarLoop]: Abstraction has 221867 states and 234064 transitions. [2018-10-24 14:10:14,006 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 14:10:14,006 INFO L276 IsEmpty]: Start isEmpty. Operand 221867 states and 234064 transitions. [2018-10-24 14:10:14,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 674 [2018-10-24 14:10:14,040 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:10:14,040 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 14:10:14,041 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:10:14,041 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:10:14,041 INFO L82 PathProgramCache]: Analyzing trace with hash -556927638, now seen corresponding path program 1 times [2018-10-24 14:10:14,041 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:10:14,042 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:10:14,042 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:10:14,042 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:10:14,043 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:10:14,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:10:15,900 INFO L134 CoverageAnalysis]: Checked inductivity of 1043 backedges. 860 proven. 16 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2018-10-24 14:10:15,900 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:10:15,900 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 14:10:15,909 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:10:16,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:10:16,075 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:10:16,431 INFO L134 CoverageAnalysis]: Checked inductivity of 1043 backedges. 860 proven. 0 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2018-10-24 14:10:16,452 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 14:10:16,453 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2018-10-24 14:10:16,454 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 14:10:16,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 14:10:16,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 14:10:16,454 INFO L87 Difference]: Start difference. First operand 221867 states and 234064 transitions. Second operand 5 states. [2018-10-24 14:10:28,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:10:28,379 INFO L93 Difference]: Finished difference Result 442961 states and 467253 transitions. [2018-10-24 14:10:28,388 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 14:10:28,388 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 673 [2018-10-24 14:10:28,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:10:28,650 INFO L225 Difference]: With dead ends: 442961 [2018-10-24 14:10:28,650 INFO L226 Difference]: Without dead ends: 218725 [2018-10-24 14:10:28,757 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 677 GetRequests, 673 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 14:10:28,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218725 states. [2018-10-24 14:10:31,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218725 to 204500. [2018-10-24 14:10:31,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204500 states. [2018-10-24 14:10:31,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204500 states to 204500 states and 211403 transitions. [2018-10-24 14:10:31,531 INFO L78 Accepts]: Start accepts. Automaton has 204500 states and 211403 transitions. Word has length 673 [2018-10-24 14:10:31,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:10:31,531 INFO L481 AbstractCegarLoop]: Abstraction has 204500 states and 211403 transitions. [2018-10-24 14:10:31,531 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 14:10:31,531 INFO L276 IsEmpty]: Start isEmpty. Operand 204500 states and 211403 transitions. [2018-10-24 14:10:31,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 715 [2018-10-24 14:10:31,561 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:10:31,564 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 14:10:31,564 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:10:31,564 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:10:31,564 INFO L82 PathProgramCache]: Analyzing trace with hash -1573382673, now seen corresponding path program 1 times [2018-10-24 14:10:31,565 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:10:31,565 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:10:31,565 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:10:31,566 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:10:31,566 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:10:31,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:10:32,394 WARN L179 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-10-24 14:10:32,806 WARN L179 SmtUtils]: Spent 354.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 28 [2018-10-24 14:10:35,611 INFO L134 CoverageAnalysis]: Checked inductivity of 1373 backedges. 282 proven. 730 refuted. 0 times theorem prover too weak. 361 trivial. 0 not checked. [2018-10-24 14:10:35,611 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:10:35,611 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 14:10:35,619 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:10:35,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:10:35,807 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:10:37,144 INFO L134 CoverageAnalysis]: Checked inductivity of 1373 backedges. 782 proven. 0 refuted. 0 times theorem prover too weak. 591 trivial. 0 not checked. [2018-10-24 14:10:37,165 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 14:10:37,166 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [15] total 17 [2018-10-24 14:10:37,167 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-24 14:10:37,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-24 14:10:37,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2018-10-24 14:10:37,168 INFO L87 Difference]: Start difference. First operand 204500 states and 211403 transitions. Second operand 18 states. Received shutdown request... [2018-10-24 14:11:19,014 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-10-24 14:11:19,014 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 14:11:19,020 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 14:11:19,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 02:11:19 BoogieIcfgContainer [2018-10-24 14:11:19,021 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 14:11:19,021 INFO L168 Benchmark]: Toolchain (without parser) took 230738.14 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 2.5 GB in the end (delta: -1.1 GB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-10-24 14:11:19,022 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 14:11:19,023 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2564.54 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. [2018-10-24 14:11:19,024 INFO L168 Benchmark]: Boogie Procedure Inliner took 879.77 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 839.4 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 84.2 MB. Max. memory is 7.1 GB. [2018-10-24 14:11:19,025 INFO L168 Benchmark]: Boogie Preprocessor took 426.18 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: 62.1 MB). Peak memory consumption was 62.1 MB. Max. memory is 7.1 GB. [2018-10-24 14:11:19,025 INFO L168 Benchmark]: RCFGBuilder took 14872.30 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 233.3 MB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 46.0 MB). Peak memory consumption was 609.0 MB. Max. memory is 7.1 GB. [2018-10-24 14:11:19,026 INFO L168 Benchmark]: TraceAbstraction took 211988.68 ms. Allocated memory was 2.6 GB in the beginning and 4.2 GB in the end (delta: 1.5 GB). Free memory was 2.1 GB in the beginning and 2.5 GB in the end (delta: -444.3 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-10-24 14:11:19,031 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 2564.54 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 879.77 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 839.4 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 84.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 426.18 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: 62.1 MB). Peak memory consumption was 62.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 14872.30 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 233.3 MB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 46.0 MB). Peak memory consumption was 609.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 211988.68 ms. Allocated memory was 2.6 GB in the beginning and 4.2 GB in the end (delta: 1.5 GB). Free memory was 2.1 GB in the beginning and 2.5 GB in the end (delta: -444.3 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 75]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 75). Cancelled while BasicCegarLoop was constructing difference of abstraction (204500states) and FLOYD_HOARE automaton (currently 34 states, 18 states before enhancement),while ReachableStatesComputation was computing reachable states (178663 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1099 locations, 1 error locations. TIMEOUT Result, 211.8s OverallTime, 12 OverallIterations, 7 TraceHistogramMax, 187.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 10255 SDtfs, 52285 SDslu, 4474 SDs, 0 SdLazy, 93656 SolverSat, 16852 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 155.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2068 GetRequests, 1985 SyntacticMatches, 8 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 426 ImplicationChecksByTransitivity, 5.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=221867occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 8.7s AutomataMinimizationTime, 11 MinimizatonAttempts, 45274 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 8.7s InterpolantComputationTime, 6416 NumberOfCodeBlocks, 6416 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 6400 ConstructedInterpolants, 90 QuantifiedInterpolants, 14485825 SizeOfPredicates, 1 NumberOfNonLiveVariables, 2571 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 16 InterpolantComputations, 12 PerfectInterpolantSequences, 7112/7953 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown