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_label10_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-26 21:24:03,758 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 21:24:03,760 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 21:24:03,773 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 21:24:03,773 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 21:24:03,775 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 21:24:03,776 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 21:24:03,778 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 21:24:03,781 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 21:24:03,781 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 21:24:03,782 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 21:24:03,783 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 21:24:03,783 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 21:24:03,784 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 21:24:03,785 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 21:24:03,786 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 21:24:03,787 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 21:24:03,789 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 21:24:03,791 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 21:24:03,792 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 21:24:03,794 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 21:24:03,795 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 21:24:03,797 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 21:24:03,797 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 21:24:03,798 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 21:24:03,798 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 21:24:03,799 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 21:24:03,800 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 21:24:03,801 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 21:24:03,802 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 21:24:03,802 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 21:24:03,803 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-26 21:24:03,803 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-26 21:24:03,804 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-26 21:24:03,805 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-26 21:24:03,805 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-26 21:24:03,806 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 [2018-10-26 21:24:03,820 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 21:24:03,821 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 21:24:03,822 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 21:24:03,822 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-26 21:24:03,822 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-26 21:24:03,823 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-26 21:24:03,823 INFO L133 SettingsManager]: * Use SBE=true [2018-10-26 21:24:03,823 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 21:24:03,823 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 21:24:03,823 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 21:24:03,825 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 21:24:03,826 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 21:24:03,826 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 21:24:03,826 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 21:24:03,826 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 21:24:03,826 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 21:24:03,827 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 21:24:03,827 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 21:24:03,827 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 21:24:03,827 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 21:24:03,828 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 21:24:03,829 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 21:24:03,829 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 21:24:03,829 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-26 21:24:03,830 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 21:24:03,830 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 21:24:03,830 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-26 21:24:03,830 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-26 21:24:03,884 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 21:24:03,901 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 21:24:03,904 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 21:24:03,906 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 21:24:03,906 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 21:24:03,907 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label10_true-unreach-call.c [2018-10-26 21:24:03,969 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d4d0c2d3c/e10fb84806314113a2dff79fe29425df/FLAGa8bd4832f [2018-10-26 21:24:04,782 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 21:24:04,783 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label10_true-unreach-call.c [2018-10-26 21:24:04,814 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d4d0c2d3c/e10fb84806314113a2dff79fe29425df/FLAGa8bd4832f [2018-10-26 21:24:04,830 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d4d0c2d3c/e10fb84806314113a2dff79fe29425df [2018-10-26 21:24:04,842 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 21:24:04,844 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-26 21:24:04,845 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 21:24:04,846 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 21:24:04,849 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 21:24:04,851 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 09:24:04" (1/1) ... [2018-10-26 21:24:04,854 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f109294 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:24:04, skipping insertion in model container [2018-10-26 21:24:04,854 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 09:24:04" (1/1) ... [2018-10-26 21:24:04,864 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 21:24:05,027 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 21:24:06,534 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 21:24:06,540 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 21:24:07,240 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 21:24:07,277 INFO L193 MainTranslator]: Completed translation [2018-10-26 21:24:07,278 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:24:07 WrapperNode [2018-10-26 21:24:07,278 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 21:24:07,279 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 21:24:07,279 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 21:24:07,279 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 21:24:07,292 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:24:07" (1/1) ... [2018-10-26 21:24:07,385 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:24:07" (1/1) ... [2018-10-26 21:24:08,147 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 21:24:08,147 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 21:24:08,148 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 21:24:08,148 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 21:24:08,160 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:24:07" (1/1) ... [2018-10-26 21:24:08,160 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:24:07" (1/1) ... [2018-10-26 21:24:08,239 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:24:07" (1/1) ... [2018-10-26 21:24:08,240 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:24:07" (1/1) ... [2018-10-26 21:24:08,415 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:24:07" (1/1) ... [2018-10-26 21:24:08,465 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:24:07" (1/1) ... [2018-10-26 21:24:08,531 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:24:07" (1/1) ... [2018-10-26 21:24:08,594 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 21:24:08,595 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 21:24:08,595 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 21:24:08,595 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 21:24:08,596 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:24:07" (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 [2018-10-26 21:24:08,663 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-26 21:24:08,663 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 21:24:08,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 21:24:22,994 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 21:24:22,995 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 09:24:22 BoogieIcfgContainer [2018-10-26 21:24:22,995 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 21:24:22,996 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 21:24:22,996 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 21:24:23,000 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 21:24:23,000 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 09:24:04" (1/3) ... [2018-10-26 21:24:23,001 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f752a58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 09:24:23, skipping insertion in model container [2018-10-26 21:24:23,001 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:24:07" (2/3) ... [2018-10-26 21:24:23,002 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f752a58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 09:24:23, skipping insertion in model container [2018-10-26 21:24:23,003 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 09:24:22" (3/3) ... [2018-10-26 21:24:23,005 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label10_true-unreach-call.c [2018-10-26 21:24:23,016 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 21:24:23,033 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 21:24:23,051 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 21:24:23,113 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-26 21:24:23,113 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 21:24:23,114 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 21:24:23,114 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 21:24:23,114 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 21:24:23,114 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 21:24:23,114 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 21:24:23,114 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 21:24:23,115 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 21:24:23,157 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states. [2018-10-26 21:24:23,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-10-26 21:24:23,175 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:24:23,177 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:24:23,179 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:24:23,184 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:24:23,185 INFO L82 PathProgramCache]: Analyzing trace with hash -1660793902, now seen corresponding path program 1 times [2018-10-26 21:24:23,186 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:24:23,187 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:24:23,243 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:24:23,243 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:24:23,244 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:24:23,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:24:23,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 21:24:23,739 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:24:23,739 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 21:24:23,744 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 21:24:23,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 21:24:23,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:24:23,763 INFO L87 Difference]: Start difference. First operand 1099 states. Second operand 4 states. [2018-10-26 21:24:40,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:24:40,937 INFO L93 Difference]: Finished difference Result 3879 states and 7287 transitions. [2018-10-26 21:24:40,937 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 21:24:40,940 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 48 [2018-10-26 21:24:40,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:24:40,982 INFO L225 Difference]: With dead ends: 3879 [2018-10-26 21:24:40,982 INFO L226 Difference]: Without dead ends: 2773 [2018-10-26 21:24:40,991 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 [2018-10-26 21:24:41,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2773 states. [2018-10-26 21:24:41,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2773 to 2742. [2018-10-26 21:24:41,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2742 states. [2018-10-26 21:24:41,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2742 states to 2742 states and 4466 transitions. [2018-10-26 21:24:41,144 INFO L78 Accepts]: Start accepts. Automaton has 2742 states and 4466 transitions. Word has length 48 [2018-10-26 21:24:41,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:24:41,145 INFO L481 AbstractCegarLoop]: Abstraction has 2742 states and 4466 transitions. [2018-10-26 21:24:41,145 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 21:24:41,145 INFO L276 IsEmpty]: Start isEmpty. Operand 2742 states and 4466 transitions. [2018-10-26 21:24:41,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-10-26 21:24:41,157 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:24:41,157 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-26 21:24:41,158 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:24:41,158 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:24:41,158 INFO L82 PathProgramCache]: Analyzing trace with hash 732782270, now seen corresponding path program 1 times [2018-10-26 21:24:41,158 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:24:41,158 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:24:41,160 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:24:41,160 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:24:41,161 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:24:41,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:24:41,868 WARN L179 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 10 [2018-10-26 21:24:41,913 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 21:24:41,914 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:24:41,914 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 21:24:41,916 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 21:24:41,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 21:24:41,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-26 21:24:41,917 INFO L87 Difference]: Start difference. First operand 2742 states and 4466 transitions. Second operand 5 states. [2018-10-26 21:25:04,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:25:04,524 INFO L93 Difference]: Finished difference Result 7903 states and 11941 transitions. [2018-10-26 21:25:04,524 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-26 21:25:04,525 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 138 [2018-10-26 21:25:04,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:25:04,553 INFO L225 Difference]: With dead ends: 7903 [2018-10-26 21:25:04,553 INFO L226 Difference]: Without dead ends: 5163 [2018-10-26 21:25:04,558 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-26 21:25:04,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5163 states. [2018-10-26 21:25:04,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5163 to 4329. [2018-10-26 21:25:04,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4329 states. [2018-10-26 21:25:04,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4329 states to 4329 states and 6259 transitions. [2018-10-26 21:25:04,663 INFO L78 Accepts]: Start accepts. Automaton has 4329 states and 6259 transitions. Word has length 138 [2018-10-26 21:25:04,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:25:04,664 INFO L481 AbstractCegarLoop]: Abstraction has 4329 states and 6259 transitions. [2018-10-26 21:25:04,664 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 21:25:04,664 INFO L276 IsEmpty]: Start isEmpty. Operand 4329 states and 6259 transitions. [2018-10-26 21:25:04,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2018-10-26 21:25:04,668 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:25:04,669 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-26 21:25:04,669 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:25:04,669 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:25:04,669 INFO L82 PathProgramCache]: Analyzing trace with hash -521279062, now seen corresponding path program 1 times [2018-10-26 21:25:04,670 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:25:04,670 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:25:04,671 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:25:04,671 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:25:04,671 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:25:04,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:25:04,979 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 21:25:04,980 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:25:04,980 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 21:25:04,980 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 21:25:04,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 21:25:04,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:25:04,981 INFO L87 Difference]: Start difference. First operand 4329 states and 6259 transitions. Second operand 4 states. [2018-10-26 21:25:15,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:25:15,491 INFO L93 Difference]: Finished difference Result 15814 states and 23234 transitions. [2018-10-26 21:25:15,491 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 21:25:15,491 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 149 [2018-10-26 21:25:15,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:25:15,544 INFO L225 Difference]: With dead ends: 15814 [2018-10-26 21:25:15,545 INFO L226 Difference]: Without dead ends: 11487 [2018-10-26 21:25:15,552 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 [2018-10-26 21:25:15,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11487 states. [2018-10-26 21:25:15,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11487 to 11481. [2018-10-26 21:25:15,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11481 states. [2018-10-26 21:25:15,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11481 states to 11481 states and 15626 transitions. [2018-10-26 21:25:15,798 INFO L78 Accepts]: Start accepts. Automaton has 11481 states and 15626 transitions. Word has length 149 [2018-10-26 21:25:15,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:25:15,799 INFO L481 AbstractCegarLoop]: Abstraction has 11481 states and 15626 transitions. [2018-10-26 21:25:15,799 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 21:25:15,799 INFO L276 IsEmpty]: Start isEmpty. Operand 11481 states and 15626 transitions. [2018-10-26 21:25:15,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2018-10-26 21:25:15,806 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:25:15,807 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:25:15,807 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:25:15,808 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:25:15,808 INFO L82 PathProgramCache]: Analyzing trace with hash 1137953308, now seen corresponding path program 1 times [2018-10-26 21:25:15,808 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:25:15,808 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:25:15,812 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:25:15,812 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:25:15,812 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:25:15,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:25:16,275 WARN L179 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-10-26 21:25:16,445 WARN L179 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 27 [2018-10-26 21:25:16,532 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 113 proven. 4 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2018-10-26 21:25:16,533 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 21:25:16,533 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 [2018-10-26 21:25:16,543 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:25:16,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:25:16,634 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 21:25:16,811 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2018-10-26 21:25:16,841 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 21:25:16,842 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2018-10-26 21:25:16,843 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-26 21:25:16,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-26 21:25:16,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-26 21:25:16,844 INFO L87 Difference]: Start difference. First operand 11481 states and 15626 transitions. Second operand 6 states. [2018-10-26 21:25:36,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:25:36,574 INFO L93 Difference]: Finished difference Result 57631 states and 78123 transitions. [2018-10-26 21:25:36,576 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-26 21:25:36,576 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 211 [2018-10-26 21:25:36,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:25:36,697 INFO L225 Difference]: With dead ends: 57631 [2018-10-26 21:25:36,697 INFO L226 Difference]: Without dead ends: 46152 [2018-10-26 21:25:36,723 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 211 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2018-10-26 21:25:36,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46152 states. [2018-10-26 21:25:37,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46152 to 46150. [2018-10-26 21:25:37,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46150 states. [2018-10-26 21:25:37,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46150 states to 46150 states and 54728 transitions. [2018-10-26 21:25:37,524 INFO L78 Accepts]: Start accepts. Automaton has 46150 states and 54728 transitions. Word has length 211 [2018-10-26 21:25:37,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:25:37,525 INFO L481 AbstractCegarLoop]: Abstraction has 46150 states and 54728 transitions. [2018-10-26 21:25:37,525 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-26 21:25:37,525 INFO L276 IsEmpty]: Start isEmpty. Operand 46150 states and 54728 transitions. [2018-10-26 21:25:37,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2018-10-26 21:25:37,547 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:25:37,548 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2018-10-26 21:25:37,548 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:25:37,548 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:25:37,549 INFO L82 PathProgramCache]: Analyzing trace with hash -1213036563, now seen corresponding path program 1 times [2018-10-26 21:25:37,549 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:25:37,549 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:25:37,550 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:25:37,550 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:25:37,550 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:25:37,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:25:38,461 INFO L134 CoverageAnalysis]: Checked inductivity of 679 backedges. 516 proven. 9 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2018-10-26 21:25:38,462 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 21:25:38,462 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 [2018-10-26 21:25:38,475 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:25:38,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:25:38,611 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 21:25:38,851 INFO L134 CoverageAnalysis]: Checked inductivity of 679 backedges. 516 proven. 0 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2018-10-26 21:25:38,882 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 21:25:38,883 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2018-10-26 21:25:38,884 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 21:25:38,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 21:25:38,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-26 21:25:38,885 INFO L87 Difference]: Start difference. First operand 46150 states and 54728 transitions. Second operand 5 states. [2018-10-26 21:25:52,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:25:52,483 INFO L93 Difference]: Finished difference Result 110441 states and 133773 transitions. [2018-10-26 21:25:52,484 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-26 21:25:52,484 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 408 [2018-10-26 21:25:52,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:25:52,602 INFO L225 Difference]: With dead ends: 110441 [2018-10-26 21:25:52,602 INFO L226 Difference]: Without dead ends: 65081 [2018-10-26 21:25:52,650 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 412 GetRequests, 408 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-26 21:25:52,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65081 states. [2018-10-26 21:25:53,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65081 to 65058. [2018-10-26 21:25:53,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65058 states. [2018-10-26 21:25:53,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65058 states to 65058 states and 75080 transitions. [2018-10-26 21:25:53,366 INFO L78 Accepts]: Start accepts. Automaton has 65058 states and 75080 transitions. Word has length 408 [2018-10-26 21:25:53,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:25:53,367 INFO L481 AbstractCegarLoop]: Abstraction has 65058 states and 75080 transitions. [2018-10-26 21:25:53,367 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 21:25:53,367 INFO L276 IsEmpty]: Start isEmpty. Operand 65058 states and 75080 transitions. [2018-10-26 21:25:53,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2018-10-26 21:25:53,386 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:25:53,386 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-26 21:25:53,387 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:25:53,387 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:25:53,387 INFO L82 PathProgramCache]: Analyzing trace with hash 1975342543, now seen corresponding path program 1 times [2018-10-26 21:25:53,387 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:25:53,387 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:25:53,388 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:25:53,388 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:25:53,388 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:25:53,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:25:54,004 WARN L179 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-10-26 21:25:54,160 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 27 [2018-10-26 21:25:54,453 INFO L134 CoverageAnalysis]: Checked inductivity of 428 backedges. 378 proven. 4 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2018-10-26 21:25:54,453 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 21:25:54,453 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 [2018-10-26 21:25:54,461 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:25:54,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:25:54,578 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 21:25:55,180 INFO L134 CoverageAnalysis]: Checked inductivity of 428 backedges. 382 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2018-10-26 21:25:55,202 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 21:25:55,202 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2018-10-26 21:25:55,203 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-26 21:25:55,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-26 21:25:55,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-26 21:25:55,204 INFO L87 Difference]: Start difference. First operand 65058 states and 75080 transitions. Second operand 8 states. [2018-10-26 21:25:55,466 WARN L179 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 21 [2018-10-26 21:26:19,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:26:19,037 INFO L93 Difference]: Finished difference Result 170316 states and 196463 transitions. [2018-10-26 21:26:19,037 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-26 21:26:19,038 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 411 [2018-10-26 21:26:19,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:26:19,252 INFO L225 Difference]: With dead ends: 170316 [2018-10-26 21:26:19,252 INFO L226 Difference]: Without dead ends: 106048 [2018-10-26 21:26:19,305 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 429 GetRequests, 415 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2018-10-26 21:26:19,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106048 states. [2018-10-26 21:26:20,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106048 to 98935. [2018-10-26 21:26:20,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98935 states. [2018-10-26 21:26:20,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98935 states to 98935 states and 110632 transitions. [2018-10-26 21:26:20,636 INFO L78 Accepts]: Start accepts. Automaton has 98935 states and 110632 transitions. Word has length 411 [2018-10-26 21:26:20,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:26:20,636 INFO L481 AbstractCegarLoop]: Abstraction has 98935 states and 110632 transitions. [2018-10-26 21:26:20,636 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-26 21:26:20,637 INFO L276 IsEmpty]: Start isEmpty. Operand 98935 states and 110632 transitions. [2018-10-26 21:26:20,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2018-10-26 21:26:20,667 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:26:20,667 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:26:20,668 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:26:20,668 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:26:20,668 INFO L82 PathProgramCache]: Analyzing trace with hash -1539898024, now seen corresponding path program 1 times [2018-10-26 21:26:20,668 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:26:20,669 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:26:20,669 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:26:20,677 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:26:20,677 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:26:20,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:26:21,127 INFO L134 CoverageAnalysis]: Checked inductivity of 743 backedges. 468 proven. 0 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2018-10-26 21:26:21,128 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:26:21,128 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 21:26:21,128 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 21:26:21,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 21:26:21,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 21:26:21,129 INFO L87 Difference]: Start difference. First operand 98935 states and 110632 transitions. Second operand 3 states. [2018-10-26 21:26:29,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:26:29,213 INFO L93 Difference]: Finished difference Result 197064 states and 220335 transitions. [2018-10-26 21:26:29,214 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 21:26:29,214 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 438 [2018-10-26 21:26:29,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:26:29,371 INFO L225 Difference]: With dead ends: 197064 [2018-10-26 21:26:29,371 INFO L226 Difference]: Without dead ends: 84685 [2018-10-26 21:26:29,442 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 [2018-10-26 21:26:29,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84685 states. [2018-10-26 21:26:30,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84685 to 83107. [2018-10-26 21:26:30,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83107 states. [2018-10-26 21:26:30,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83107 states to 83107 states and 90075 transitions. [2018-10-26 21:26:30,330 INFO L78 Accepts]: Start accepts. Automaton has 83107 states and 90075 transitions. Word has length 438 [2018-10-26 21:26:30,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:26:30,331 INFO L481 AbstractCegarLoop]: Abstraction has 83107 states and 90075 transitions. [2018-10-26 21:26:30,331 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 21:26:30,331 INFO L276 IsEmpty]: Start isEmpty. Operand 83107 states and 90075 transitions. [2018-10-26 21:26:30,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 455 [2018-10-26 21:26:30,351 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:26:30,352 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:26:30,352 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:26:30,352 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:26:30,353 INFO L82 PathProgramCache]: Analyzing trace with hash 770055196, now seen corresponding path program 1 times [2018-10-26 21:26:30,353 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:26:30,353 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:26:30,354 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:26:30,354 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:26:30,354 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:26:30,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:26:31,156 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 9 proven. 82 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2018-10-26 21:26:31,156 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 21:26:31,156 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 [2018-10-26 21:26:31,175 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:26:31,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:26:31,314 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 21:26:32,223 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2018-10-26 21:26:32,259 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 21:26:32,259 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 4 [2018-10-26 21:26:32,260 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 21:26:32,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 21:26:32,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-26 21:26:32,263 INFO L87 Difference]: Start difference. First operand 83107 states and 90075 transitions. Second operand 5 states. [2018-10-26 21:26:49,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:26:49,856 INFO L93 Difference]: Finished difference Result 238758 states and 258829 transitions. [2018-10-26 21:26:49,856 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-26 21:26:49,856 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 454 [2018-10-26 21:26:49,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:26:50,059 INFO L225 Difference]: With dead ends: 238758 [2018-10-26 21:26:50,059 INFO L226 Difference]: Without dead ends: 156441 [2018-10-26 21:26:50,128 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 457 GetRequests, 453 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-26 21:26:50,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156441 states. [2018-10-26 21:26:51,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156441 to 149334. [2018-10-26 21:26:51,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149334 states. [2018-10-26 21:26:51,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149334 states to 149334 states and 159354 transitions. [2018-10-26 21:26:51,966 INFO L78 Accepts]: Start accepts. Automaton has 149334 states and 159354 transitions. Word has length 454 [2018-10-26 21:26:51,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:26:51,966 INFO L481 AbstractCegarLoop]: Abstraction has 149334 states and 159354 transitions. [2018-10-26 21:26:51,966 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 21:26:51,966 INFO L276 IsEmpty]: Start isEmpty. Operand 149334 states and 159354 transitions. [2018-10-26 21:26:51,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 500 [2018-10-26 21:26:51,985 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:26:51,985 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2018-10-26 21:26:51,986 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:26:51,986 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:26:51,986 INFO L82 PathProgramCache]: Analyzing trace with hash -1972376893, now seen corresponding path program 1 times [2018-10-26 21:26:51,986 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:26:51,986 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:26:51,987 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:26:51,987 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:26:51,988 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:26:52,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:26:52,450 INFO L134 CoverageAnalysis]: Checked inductivity of 752 backedges. 568 proven. 0 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2018-10-26 21:26:52,451 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:26:52,451 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 21:26:52,451 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 21:26:52,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 21:26:52,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-26 21:26:52,452 INFO L87 Difference]: Start difference. First operand 149334 states and 159354 transitions. Second operand 5 states. [2018-10-26 21:27:13,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:27:13,040 INFO L93 Difference]: Finished difference Result 458922 states and 490373 transitions. [2018-10-26 21:27:13,040 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-26 21:27:13,040 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 499 [2018-10-26 21:27:13,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:27:13,416 INFO L225 Difference]: With dead ends: 458922 [2018-10-26 21:27:13,417 INFO L226 Difference]: Without dead ends: 310378 [2018-10-26 21:27:13,519 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 [2018-10-26 21:27:13,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310378 states. [2018-10-26 21:27:16,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310378 to 286526. [2018-10-26 21:27:16,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 286526 states. [2018-10-26 21:27:16,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286526 states to 286526 states and 304148 transitions. [2018-10-26 21:27:16,986 INFO L78 Accepts]: Start accepts. Automaton has 286526 states and 304148 transitions. Word has length 499 [2018-10-26 21:27:16,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:27:16,986 INFO L481 AbstractCegarLoop]: Abstraction has 286526 states and 304148 transitions. [2018-10-26 21:27:16,986 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 21:27:16,987 INFO L276 IsEmpty]: Start isEmpty. Operand 286526 states and 304148 transitions. [2018-10-26 21:27:17,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 532 [2018-10-26 21:27:17,005 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:27:17,006 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:27:17,006 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:27:17,006 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:27:17,007 INFO L82 PathProgramCache]: Analyzing trace with hash 1661633254, now seen corresponding path program 1 times [2018-10-26 21:27:17,007 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:27:17,007 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:27:17,007 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:27:17,008 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:27:17,008 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:27:17,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:27:18,470 INFO L134 CoverageAnalysis]: Checked inductivity of 774 backedges. 54 proven. 497 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2018-10-26 21:27:18,470 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 21:27:18,470 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 21:27:18,477 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:27:18,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:27:18,619 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 21:27:20,013 INFO L134 CoverageAnalysis]: Checked inductivity of 774 backedges. 453 proven. 0 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2018-10-26 21:27:20,034 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 21:27:20,035 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [11] total 13 [2018-10-26 21:27:20,035 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-26 21:27:20,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-26 21:27:20,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2018-10-26 21:27:20,036 INFO L87 Difference]: Start difference. First operand 286526 states and 304148 transitions. Second operand 13 states. Received shutdown request... [2018-10-26 21:27:56,548 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-26 21:27:56,549 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-26 21:27:56,554 WARN L205 ceAbstractionStarter]: Timeout [2018-10-26 21:27:56,554 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 09:27:56 BoogieIcfgContainer [2018-10-26 21:27:56,554 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 21:27:56,555 INFO L168 Benchmark]: Toolchain (without parser) took 231711.87 ms. Allocated memory was 1.5 GB in the beginning and 3.5 GB in the end (delta: 2.0 GB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -820.1 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-10-26 21:27:56,556 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. [2018-10-26 21:27:56,556 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2433.08 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. [2018-10-26 21:27:56,557 INFO L168 Benchmark]: Boogie Procedure Inliner took 868.03 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 834.1 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 73.1 MB. Max. memory is 7.1 GB. [2018-10-26 21:27:56,558 INFO L168 Benchmark]: Boogie Preprocessor took 447.03 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: 79.6 MB). Peak memory consumption was 79.6 MB. Max. memory is 7.1 GB. [2018-10-26 21:27:56,559 INFO L168 Benchmark]: RCFGBuilder took 14400.52 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 239.1 MB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 38.6 MB). Peak memory consumption was 581.7 MB. Max. memory is 7.1 GB. [2018-10-26 21:27:56,560 INFO L168 Benchmark]: TraceAbstraction took 213558.03 ms. Allocated memory was 2.6 GB in the beginning and 3.5 GB in the end (delta: 885.5 MB). Free memory was 2.1 GB in the beginning and 2.2 GB in the end (delta: -154.2 MB). Peak memory consumption was 731.3 MB. Max. memory is 7.1 GB. [2018-10-26 21:27:56,565 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 2433.08 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 868.03 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 834.1 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 73.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 447.03 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: 79.6 MB). Peak memory consumption was 79.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 14400.52 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 239.1 MB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 38.6 MB). Peak memory consumption was 581.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 213558.03 ms. Allocated memory was 2.6 GB in the beginning and 3.5 GB in the end (delta: 885.5 MB). Free memory was 2.1 GB in the beginning and 2.2 GB in the end (delta: -154.2 MB). Peak memory consumption was 731.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 153]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 153). Cancelled while BasicCegarLoop was constructing difference of abstraction (286526states) and FLOYD_HOARE automaton (currently 14 states, 13 states before enhancement),while ReachableStatesComputation was computing reachable states (186520 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1099 locations, 1 error locations. TIMEOUT Result, 213.4s OverallTime, 10 OverallIterations, 5 TraceHistogramMax, 191.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 8105 SDtfs, 45706 SDslu, 4927 SDs, 0 SdLazy, 93361 SolverSat, 15973 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 159.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2094 GetRequests, 2030 SyntacticMatches, 12 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 3.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=286526occurred in iteration=9, 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: 9.5s AutomataMinimizationTime, 9 MinimizatonAttempts, 40546 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 8.2s InterpolantComputationTime, 5302 NumberOfCodeBlocks, 5302 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 5287 ConstructedInterpolants, 0 QuantifiedInterpolants, 9151924 SizeOfPredicates, 2 NumberOfNonLiveVariables, 2647 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 15 InterpolantComputations, 10 PerfectInterpolantSequences, 5437/6033 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown