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_label21_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 18:39:41,726 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 18:39:41,728 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 18:39:41,740 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 18:39:41,740 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 18:39:41,741 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 18:39:41,743 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 18:39:41,744 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 18:39:41,746 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 18:39:41,747 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 18:39:41,748 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 18:39:41,748 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 18:39:41,749 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 18:39:41,750 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 18:39:41,751 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 18:39:41,752 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 18:39:41,753 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 18:39:41,755 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 18:39:41,757 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 18:39:41,759 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 18:39:41,763 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 18:39:41,764 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 18:39:41,768 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-23 18:39:41,768 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-23 18:39:41,768 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-23 18:39:41,771 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-23 18:39:41,772 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-23 18:39:41,775 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-23 18:39:41,776 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-23 18:39:41,777 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-23 18:39:41,778 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-23 18:39:41,781 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-23 18:39:41,787 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 18:39:41,816 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 18:39:41,816 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 18:39:41,819 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 18:39:41,819 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-23 18:39:41,820 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-23 18:39:41,820 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-23 18:39:41,820 INFO L133 SettingsManager]: * Use SBE=true [2018-10-23 18:39:41,821 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 18:39:41,821 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 18:39:41,821 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 18:39:41,821 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 18:39:41,821 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 18:39:41,821 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 18:39:41,825 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 18:39:41,825 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 18:39:41,825 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 18:39:41,826 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 18:39:41,826 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 18:39:41,826 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 18:39:41,826 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 18:39:41,827 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 18:39:41,827 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 18:39:41,827 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 18:39:41,827 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-23 18:39:41,827 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 18:39:41,828 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 18:39:41,828 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 18:39:41,828 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 18:39:41,883 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 18:39:41,896 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 18:39:41,900 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 18:39:41,902 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 18:39:41,902 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 18:39:41,903 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label21_false-unreach-call.c [2018-10-23 18:39:41,963 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/16fdc6cd0/81a8de32cd6b44a8ae8db06a78e72312/FLAGa43ca4bae [2018-10-23 18:39:42,957 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 18:39:42,958 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label21_false-unreach-call.c [2018-10-23 18:39:43,003 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/16fdc6cd0/81a8de32cd6b44a8ae8db06a78e72312/FLAGa43ca4bae [2018-10-23 18:39:43,019 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/16fdc6cd0/81a8de32cd6b44a8ae8db06a78e72312 [2018-10-23 18:39:43,032 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 18:39:43,035 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 18:39:43,036 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 18:39:43,036 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 18:39:43,040 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 18:39:43,042 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:39:43" (1/1) ... [2018-10-23 18:39:43,045 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fd5a079 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:39:43, skipping insertion in model container [2018-10-23 18:39:43,045 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:39:43" (1/1) ... [2018-10-23 18:39:43,056 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 18:39:43,346 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 18:39:45,325 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 18:39:45,332 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 18:39:46,589 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 18:39:46,649 INFO L193 MainTranslator]: Completed translation [2018-10-23 18:39:46,650 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:39:46 WrapperNode [2018-10-23 18:39:46,650 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 18:39:46,651 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 18:39:46,651 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 18:39:46,652 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 18:39:46,663 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:39:46" (1/1) ... [2018-10-23 18:39:46,776 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:39:46" (1/1) ... [2018-10-23 18:39:47,902 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 18:39:47,902 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 18:39:47,903 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 18:39:47,903 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 18:39:47,912 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:39:46" (1/1) ... [2018-10-23 18:39:47,912 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:39:46" (1/1) ... [2018-10-23 18:39:48,044 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:39:46" (1/1) ... [2018-10-23 18:39:48,044 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:39:46" (1/1) ... [2018-10-23 18:39:48,304 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:39:46" (1/1) ... [2018-10-23 18:39:48,377 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:39:46" (1/1) ... [2018-10-23 18:39:48,497 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:39:46" (1/1) ... [2018-10-23 18:39:48,659 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 18:39:48,660 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 18:39:48,660 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 18:39:48,660 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 18:39:48,661 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:39:46" (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 18:39:48,737 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-23 18:39:48,737 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 18:39:48,737 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 18:40:06,175 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 18:40:06,177 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:40:06 BoogieIcfgContainer [2018-10-23 18:40:06,177 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 18:40:06,178 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 18:40:06,178 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 18:40:06,185 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 18:40:06,185 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 06:39:43" (1/3) ... [2018-10-23 18:40:06,186 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@735c0a98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:40:06, skipping insertion in model container [2018-10-23 18:40:06,186 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:39:46" (2/3) ... [2018-10-23 18:40:06,187 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@735c0a98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:40:06, skipping insertion in model container [2018-10-23 18:40:06,187 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:40:06" (3/3) ... [2018-10-23 18:40:06,189 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label21_false-unreach-call.c [2018-10-23 18:40:06,199 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 18:40:06,210 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 18:40:06,227 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 18:40:06,293 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-23 18:40:06,294 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 18:40:06,294 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 18:40:06,294 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 18:40:06,295 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 18:40:06,295 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 18:40:06,295 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 18:40:06,295 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 18:40:06,295 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 18:40:06,352 INFO L276 IsEmpty]: Start isEmpty. Operand 1749 states. [2018-10-23 18:40:06,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-10-23 18:40:06,359 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:40:06,360 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:40:06,363 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:40:06,369 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:40:06,369 INFO L82 PathProgramCache]: Analyzing trace with hash 666618706, now seen corresponding path program 1 times [2018-10-23 18:40:06,371 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:40:06,372 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:40:06,427 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:40:06,428 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:40:06,428 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:40:06,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:40:06,598 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 18:40:06,601 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:40:06,602 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-23 18:40:06,606 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 18:40:06,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 18:40:06,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 18:40:06,626 INFO L87 Difference]: Start difference. First operand 1749 states. Second operand 3 states. [2018-10-23 18:40:29,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:40:29,467 INFO L93 Difference]: Finished difference Result 4922 states and 9316 transitions. [2018-10-23 18:40:29,468 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 18:40:29,469 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2018-10-23 18:40:29,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:40:29,519 INFO L225 Difference]: With dead ends: 4922 [2018-10-23 18:40:29,519 INFO L226 Difference]: Without dead ends: 3169 [2018-10-23 18:40:29,533 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 18:40:29,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3169 states. [2018-10-23 18:40:29,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3169 to 3168. [2018-10-23 18:40:29,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3168 states. [2018-10-23 18:40:29,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3168 states to 3168 states and 5255 transitions. [2018-10-23 18:40:29,707 INFO L78 Accepts]: Start accepts. Automaton has 3168 states and 5255 transitions. Word has length 16 [2018-10-23 18:40:29,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:40:29,708 INFO L481 AbstractCegarLoop]: Abstraction has 3168 states and 5255 transitions. [2018-10-23 18:40:29,708 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 18:40:29,708 INFO L276 IsEmpty]: Start isEmpty. Operand 3168 states and 5255 transitions. [2018-10-23 18:40:29,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-10-23 18:40:29,713 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:40:29,713 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-23 18:40:29,715 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:40:29,715 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:40:29,715 INFO L82 PathProgramCache]: Analyzing trace with hash -388749078, now seen corresponding path program 1 times [2018-10-23 18:40:29,716 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:40:29,716 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:40:29,717 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:40:29,717 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:40:29,717 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:40:29,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:40:30,147 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:40:30,147 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:40:30,148 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:40:30,149 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:40:30,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:40:30,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:40:30,150 INFO L87 Difference]: Start difference. First operand 3168 states and 5255 transitions. Second operand 4 states. [2018-10-23 18:40:57,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:40:57,690 INFO L93 Difference]: Finished difference Result 12008 states and 20113 transitions. [2018-10-23 18:40:57,690 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:40:57,691 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 86 [2018-10-23 18:40:57,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:40:57,743 INFO L225 Difference]: With dead ends: 12008 [2018-10-23 18:40:57,743 INFO L226 Difference]: Without dead ends: 8842 [2018-10-23 18:40:57,751 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 [2018-10-23 18:40:57,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8842 states. [2018-10-23 18:40:57,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8842 to 5903. [2018-10-23 18:40:57,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5903 states. [2018-10-23 18:40:57,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5903 states to 5903 states and 9592 transitions. [2018-10-23 18:40:57,917 INFO L78 Accepts]: Start accepts. Automaton has 5903 states and 9592 transitions. Word has length 86 [2018-10-23 18:40:57,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:40:57,918 INFO L481 AbstractCegarLoop]: Abstraction has 5903 states and 9592 transitions. [2018-10-23 18:40:57,918 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:40:57,918 INFO L276 IsEmpty]: Start isEmpty. Operand 5903 states and 9592 transitions. [2018-10-23 18:40:57,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2018-10-23 18:40:57,925 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:40:57,925 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-23 18:40:57,925 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:40:57,926 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:40:57,926 INFO L82 PathProgramCache]: Analyzing trace with hash 1312265824, now seen corresponding path program 1 times [2018-10-23 18:40:57,926 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:40:57,926 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:40:57,928 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:40:57,928 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:40:57,928 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:40:57,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:40:58,510 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:40:58,511 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:40:58,511 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 18:40:58,511 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 18:40:58,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 18:40:58,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 18:40:58,512 INFO L87 Difference]: Start difference. First operand 5903 states and 9592 transitions. Second operand 5 states. [2018-10-23 18:41:20,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:41:20,314 INFO L93 Difference]: Finished difference Result 15911 states and 25485 transitions. [2018-10-23 18:41:20,320 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:41:20,320 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 91 [2018-10-23 18:41:20,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:41:20,368 INFO L225 Difference]: With dead ends: 15911 [2018-10-23 18:41:20,369 INFO L226 Difference]: Without dead ends: 10010 [2018-10-23 18:41:20,378 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 18:41:20,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10010 states. [2018-10-23 18:41:20,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10010 to 10006. [2018-10-23 18:41:20,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10006 states. [2018-10-23 18:41:20,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10006 states to 10006 states and 14861 transitions. [2018-10-23 18:41:20,549 INFO L78 Accepts]: Start accepts. Automaton has 10006 states and 14861 transitions. Word has length 91 [2018-10-23 18:41:20,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:41:20,550 INFO L481 AbstractCegarLoop]: Abstraction has 10006 states and 14861 transitions. [2018-10-23 18:41:20,550 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 18:41:20,551 INFO L276 IsEmpty]: Start isEmpty. Operand 10006 states and 14861 transitions. [2018-10-23 18:41:20,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-10-23 18:41:20,554 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:41:20,555 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-23 18:41:20,555 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:41:20,555 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:41:20,555 INFO L82 PathProgramCache]: Analyzing trace with hash -235810371, now seen corresponding path program 1 times [2018-10-23 18:41:20,557 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:41:20,557 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:41:20,558 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:41:20,558 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:41:20,558 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:41:20,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:41:20,908 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:41:20,908 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:41:20,909 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:41:20,909 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:41:20,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:41:20,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:41:20,910 INFO L87 Difference]: Start difference. First operand 10006 states and 14861 transitions. Second operand 4 states. [2018-10-23 18:41:40,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:41:40,748 INFO L93 Difference]: Finished difference Result 37880 states and 55980 transitions. [2018-10-23 18:41:40,749 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:41:40,749 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 108 [2018-10-23 18:41:40,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:41:40,831 INFO L225 Difference]: With dead ends: 37880 [2018-10-23 18:41:40,832 INFO L226 Difference]: Without dead ends: 27876 [2018-10-23 18:41:40,851 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:41:40,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27876 states. [2018-10-23 18:41:41,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27876 to 18217. [2018-10-23 18:41:41,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18217 states. [2018-10-23 18:41:41,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18217 states to 18217 states and 23452 transitions. [2018-10-23 18:41:41,180 INFO L78 Accepts]: Start accepts. Automaton has 18217 states and 23452 transitions. Word has length 108 [2018-10-23 18:41:41,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:41:41,181 INFO L481 AbstractCegarLoop]: Abstraction has 18217 states and 23452 transitions. [2018-10-23 18:41:41,183 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:41:41,183 INFO L276 IsEmpty]: Start isEmpty. Operand 18217 states and 23452 transitions. [2018-10-23 18:41:41,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-10-23 18:41:41,184 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:41:41,184 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-23 18:41:41,185 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:41:41,185 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:41:41,185 INFO L82 PathProgramCache]: Analyzing trace with hash -1541472050, now seen corresponding path program 1 times [2018-10-23 18:41:41,185 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:41:41,185 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:41:41,192 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:41:41,193 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:41:41,193 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:41:41,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:41:41,496 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:41:41,497 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:41:41,497 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:41:41,497 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:41:41,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:41:41,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:41:41,498 INFO L87 Difference]: Start difference. First operand 18217 states and 23452 transitions. Second operand 4 states. [2018-10-23 18:42:04,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:42:04,006 INFO L93 Difference]: Finished difference Result 66754 states and 86558 transitions. [2018-10-23 18:42:04,007 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:42:04,007 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 114 [2018-10-23 18:42:04,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:42:04,123 INFO L225 Difference]: With dead ends: 66754 [2018-10-23 18:42:04,123 INFO L226 Difference]: Without dead ends: 48539 [2018-10-23 18:42:04,160 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 [2018-10-23 18:42:04,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48539 states. [2018-10-23 18:42:04,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48539 to 48527. [2018-10-23 18:42:04,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48527 states. [2018-10-23 18:42:05,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48527 states to 48527 states and 57260 transitions. [2018-10-23 18:42:05,052 INFO L78 Accepts]: Start accepts. Automaton has 48527 states and 57260 transitions. Word has length 114 [2018-10-23 18:42:05,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:42:05,052 INFO L481 AbstractCegarLoop]: Abstraction has 48527 states and 57260 transitions. [2018-10-23 18:42:05,052 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:42:05,053 INFO L276 IsEmpty]: Start isEmpty. Operand 48527 states and 57260 transitions. [2018-10-23 18:42:05,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2018-10-23 18:42:05,055 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:42:05,056 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-23 18:42:05,056 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:42:05,056 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:42:05,056 INFO L82 PathProgramCache]: Analyzing trace with hash 1219595665, now seen corresponding path program 1 times [2018-10-23 18:42:05,057 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:42:05,057 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:42:05,057 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:42:05,058 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:42:05,061 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:42:05,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:42:05,443 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:42:05,444 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:42:05,444 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 18:42:05,445 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:42:05,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:42:05,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:42:05,446 INFO L87 Difference]: Start difference. First operand 48527 states and 57260 transitions. Second operand 4 states. [2018-10-23 18:42:25,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:42:25,383 INFO L93 Difference]: Finished difference Result 128504 states and 154595 transitions. [2018-10-23 18:42:25,384 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:42:25,384 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 224 [2018-10-23 18:42:25,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:42:25,503 INFO L225 Difference]: With dead ends: 128504 [2018-10-23 18:42:25,504 INFO L226 Difference]: Without dead ends: 79979 [2018-10-23 18:42:25,564 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 2 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 18:42:25,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79979 states. [2018-10-23 18:42:26,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79979 to 78602. [2018-10-23 18:42:26,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78602 states. [2018-10-23 18:42:26,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78602 states to 78602 states and 91268 transitions. [2018-10-23 18:42:26,429 INFO L78 Accepts]: Start accepts. Automaton has 78602 states and 91268 transitions. Word has length 224 [2018-10-23 18:42:26,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:42:26,430 INFO L481 AbstractCegarLoop]: Abstraction has 78602 states and 91268 transitions. [2018-10-23 18:42:26,430 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:42:26,430 INFO L276 IsEmpty]: Start isEmpty. Operand 78602 states and 91268 transitions. [2018-10-23 18:42:26,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 685 [2018-10-23 18:42:26,447 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:42:26,447 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:42:26,448 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:42:26,448 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:42:26,448 INFO L82 PathProgramCache]: Analyzing trace with hash -2076658619, now seen corresponding path program 1 times [2018-10-23 18:42:26,449 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:42:26,449 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:42:26,449 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:42:26,450 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:42:26,450 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:42:26,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:42:27,293 WARN L179 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2018-10-23 18:42:27,656 WARN L179 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 21 [2018-10-23 18:42:29,209 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-10-23 18:42:29,210 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:42:29,210 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-10-23 18:42:29,211 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-23 18:42:29,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-23 18:42:29,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-10-23 18:42:29,212 INFO L87 Difference]: Start difference. First operand 78602 states and 91268 transitions. Second operand 8 states. [2018-10-23 18:42:57,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:42:57,480 INFO L93 Difference]: Finished difference Result 216496 states and 252249 transitions. [2018-10-23 18:42:57,483 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-23 18:42:57,483 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 684 [2018-10-23 18:42:57,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:42:57,662 INFO L225 Difference]: With dead ends: 216496 [2018-10-23 18:42:57,663 INFO L226 Difference]: Without dead ends: 137896 [2018-10-23 18:42:57,740 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2018-10-23 18:42:57,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137896 states. [2018-10-23 18:42:58,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137896 to 79968. [2018-10-23 18:42:58,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79968 states. [2018-10-23 18:42:58,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79968 states to 79968 states and 92640 transitions. [2018-10-23 18:42:58,891 INFO L78 Accepts]: Start accepts. Automaton has 79968 states and 92640 transitions. Word has length 684 [2018-10-23 18:42:58,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:42:58,893 INFO L481 AbstractCegarLoop]: Abstraction has 79968 states and 92640 transitions. [2018-10-23 18:42:58,893 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-23 18:42:58,893 INFO L276 IsEmpty]: Start isEmpty. Operand 79968 states and 92640 transitions. [2018-10-23 18:42:58,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 804 [2018-10-23 18:42:58,918 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:42:58,919 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1] [2018-10-23 18:42:58,920 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:42:58,920 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:42:58,920 INFO L82 PathProgramCache]: Analyzing trace with hash -319261357, now seen corresponding path program 1 times [2018-10-23 18:42:58,920 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:42:58,920 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:42:58,921 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:42:58,921 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:42:58,922 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:42:59,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:43:00,002 INFO L134 CoverageAnalysis]: Checked inductivity of 422 backedges. 212 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2018-10-23 18:43:00,002 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:43:00,003 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-23 18:43:00,004 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 18:43:00,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 18:43:00,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 18:43:00,004 INFO L87 Difference]: Start difference. First operand 79968 states and 92640 transitions. Second operand 5 states. [2018-10-23 18:43:33,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:43:33,216 INFO L93 Difference]: Finished difference Result 292612 states and 343836 transitions. [2018-10-23 18:43:33,217 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-23 18:43:33,217 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 803 [2018-10-23 18:43:33,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:43:33,478 INFO L225 Difference]: With dead ends: 292612 [2018-10-23 18:43:33,478 INFO L226 Difference]: Without dead ends: 214012 [2018-10-23 18:43:33,550 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 18:43:33,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214012 states. [2018-10-23 18:43:35,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214012 to 161934. [2018-10-23 18:43:35,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161934 states. [2018-10-23 18:43:35,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161934 states to 161934 states and 187606 transitions. [2018-10-23 18:43:35,975 INFO L78 Accepts]: Start accepts. Automaton has 161934 states and 187606 transitions. Word has length 803 [2018-10-23 18:43:35,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:43:35,976 INFO L481 AbstractCegarLoop]: Abstraction has 161934 states and 187606 transitions. [2018-10-23 18:43:35,976 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 18:43:35,977 INFO L276 IsEmpty]: Start isEmpty. Operand 161934 states and 187606 transitions. [2018-10-23 18:43:35,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 899 [2018-10-23 18:43:35,987 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:43:35,988 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 18:43:35,988 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:43:35,988 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:43:35,989 INFO L82 PathProgramCache]: Analyzing trace with hash 1301963741, now seen corresponding path program 1 times [2018-10-23 18:43:35,989 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:43:35,989 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:43:35,990 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:43:35,990 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:43:35,990 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:43:36,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:43:36,993 INFO L134 CoverageAnalysis]: Checked inductivity of 519 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 478 trivial. 0 not checked. [2018-10-23 18:43:36,994 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:43:36,994 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 18:43:36,995 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:43:36,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:43:36,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:43:36,996 INFO L87 Difference]: Start difference. First operand 161934 states and 187606 transitions. Second operand 4 states. Received shutdown request... [2018-10-23 18:43:45,414 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:43:45,414 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 18:43:45,420 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 18:43:45,421 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 06:43:45 BoogieIcfgContainer [2018-10-23 18:43:45,421 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 18:43:45,422 INFO L168 Benchmark]: Toolchain (without parser) took 242389.05 ms. Allocated memory was 1.5 GB in the beginning and 3.6 GB in the end (delta: 2.1 GB). Free memory was 1.4 GB in the beginning and 2.6 GB in the end (delta: -1.3 GB). Peak memory consumption was 828.4 MB. Max. memory is 7.1 GB. [2018-10-23 18:43:45,423 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 18:43:45,424 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3614.92 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 975.8 MB in the end (delta: 392.7 MB). Peak memory consumption was 392.7 MB. Max. memory is 7.1 GB. [2018-10-23 18:43:45,425 INFO L168 Benchmark]: Boogie Procedure Inliner took 1250.99 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 809.0 MB). Free memory was 975.8 MB in the beginning and 2.0 GB in the end (delta: -1.1 GB). Peak memory consumption was 117.1 MB. Max. memory is 7.1 GB. [2018-10-23 18:43:45,426 INFO L168 Benchmark]: Boogie Preprocessor took 756.92 ms. Allocated memory is still 2.3 GB. Free memory was 2.0 GB in the beginning and 2.0 GB in the end (delta: 92.8 MB). Peak memory consumption was 92.8 MB. Max. memory is 7.1 GB. [2018-10-23 18:43:45,427 INFO L168 Benchmark]: RCFGBuilder took 17517.74 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 285.2 MB). Free memory was 2.0 GB in the beginning and 1.5 GB in the end (delta: 486.6 MB). Peak memory consumption was 771.9 MB. Max. memory is 7.1 GB. [2018-10-23 18:43:45,428 INFO L168 Benchmark]: TraceAbstraction took 219242.69 ms. Allocated memory was 2.6 GB in the beginning and 3.6 GB in the end (delta: 1.0 GB). Free memory was 1.5 GB in the beginning and 2.6 GB in the end (delta: -1.2 GB). There was no memory consumed. Max. memory is 7.1 GB. [2018-10-23 18:43:45,433 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 3614.92 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 975.8 MB in the end (delta: 392.7 MB). Peak memory consumption was 392.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 1250.99 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 809.0 MB). Free memory was 975.8 MB in the beginning and 2.0 GB in the end (delta: -1.1 GB). Peak memory consumption was 117.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 756.92 ms. Allocated memory is still 2.3 GB. Free memory was 2.0 GB in the beginning and 2.0 GB in the end (delta: 92.8 MB). Peak memory consumption was 92.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 17517.74 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 285.2 MB). Free memory was 2.0 GB in the beginning and 1.5 GB in the end (delta: 486.6 MB). Peak memory consumption was 771.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 219242.69 ms. Allocated memory was 2.6 GB in the beginning and 3.6 GB in the end (delta: 1.0 GB). Free memory was 1.5 GB in the beginning and 2.6 GB in the end (delta: -1.2 GB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 61]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 61). Cancelled while BasicCegarLoop was constructing difference of abstraction (161934states) and FLOYD_HOARE automaton (currently 4 states, 4 states before enhancement),while ReachableStatesComputation was computing reachable states (63098 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1749 locations, 1 error locations. TIMEOUT Result, 219.1s OverallTime, 9 OverallIterations, 4 TraceHistogramMax, 205.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 12283 SDtfs, 34134 SDslu, 12608 SDs, 0 SdLazy, 75797 SolverSat, 18119 SolverUnsat, 6 SolverUnknown, 0 SolverNotchecked, 178.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 49 GetRequests, 12 SyntacticMatches, 6 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 2.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=161934occurred in iteration=8, 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: 6.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 123998 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 3.8s InterpolantComputationTime, 3024 NumberOfCodeBlocks, 3024 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 3015 ConstructedInterpolants, 0 QuantifiedInterpolants, 7099135 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 1118/1118 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown