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/Problem11_label34_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-26 19:04:18,948 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 19:04:18,950 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 19:04:18,962 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 19:04:18,962 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 19:04:18,963 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 19:04:18,964 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 19:04:18,966 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 19:04:18,968 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 19:04:18,969 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 19:04:18,970 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 19:04:18,970 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 19:04:18,971 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 19:04:18,972 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 19:04:18,975 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 19:04:18,978 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 19:04:18,979 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 19:04:18,980 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 19:04:18,982 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 19:04:18,984 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 19:04:18,985 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 19:04:18,986 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 19:04:18,988 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 19:04:18,988 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 19:04:18,988 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 19:04:18,989 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 19:04:18,990 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 19:04:18,991 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 19:04:18,991 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 19:04:18,992 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 19:04:18,993 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 19:04:18,993 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-26 19:04:18,993 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-26 19:04:18,994 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-26 19:04:18,995 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-26 19:04:18,995 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-26 19:04:18,996 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 19:04:19,021 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 19:04:19,021 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 19:04:19,023 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 19:04:19,023 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-26 19:04:19,024 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-26 19:04:19,024 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-26 19:04:19,024 INFO L133 SettingsManager]: * Use SBE=true [2018-10-26 19:04:19,024 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 19:04:19,024 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 19:04:19,025 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 19:04:19,026 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 19:04:19,026 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 19:04:19,026 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 19:04:19,026 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 19:04:19,026 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 19:04:19,027 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 19:04:19,027 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 19:04:19,027 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 19:04:19,027 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 19:04:19,027 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 19:04:19,028 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 19:04:19,029 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 19:04:19,029 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 19:04:19,029 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-26 19:04:19,029 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 19:04:19,030 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 19:04:19,030 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-26 19:04:19,030 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-26 19:04:19,096 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 19:04:19,110 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 19:04:19,115 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 19:04:19,116 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 19:04:19,117 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 19:04:19,117 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label34_false-unreach-call.c [2018-10-26 19:04:19,176 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/34f68aef9/5c1ff22b82ac46daa9bdb4ecf0ef9fc8/FLAGb99806db0 [2018-10-26 19:04:19,777 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 19:04:19,780 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label34_false-unreach-call.c [2018-10-26 19:04:19,795 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/34f68aef9/5c1ff22b82ac46daa9bdb4ecf0ef9fc8/FLAGb99806db0 [2018-10-26 19:04:19,817 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/34f68aef9/5c1ff22b82ac46daa9bdb4ecf0ef9fc8 [2018-10-26 19:04:19,828 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 19:04:19,830 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-26 19:04:19,831 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 19:04:19,831 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 19:04:19,835 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 19:04:19,836 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 07:04:19" (1/1) ... [2018-10-26 19:04:19,839 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d165524 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:04:19, skipping insertion in model container [2018-10-26 19:04:19,839 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 07:04:19" (1/1) ... [2018-10-26 19:04:19,849 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 19:04:19,940 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 19:04:20,527 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 19:04:20,532 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 19:04:20,757 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 19:04:20,783 INFO L193 MainTranslator]: Completed translation [2018-10-26 19:04:20,783 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:04:20 WrapperNode [2018-10-26 19:04:20,784 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 19:04:20,785 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 19:04:20,785 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 19:04:20,785 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 19:04:20,796 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:04:20" (1/1) ... [2018-10-26 19:04:20,832 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:04:20" (1/1) ... [2018-10-26 19:04:21,044 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 19:04:21,045 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 19:04:21,045 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 19:04:21,045 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 19:04:21,056 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:04:20" (1/1) ... [2018-10-26 19:04:21,057 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:04:20" (1/1) ... [2018-10-26 19:04:21,064 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:04:20" (1/1) ... [2018-10-26 19:04:21,065 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:04:20" (1/1) ... [2018-10-26 19:04:21,112 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:04:20" (1/1) ... [2018-10-26 19:04:21,138 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:04:20" (1/1) ... [2018-10-26 19:04:21,166 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:04:20" (1/1) ... [2018-10-26 19:04:21,185 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 19:04:21,185 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 19:04:21,185 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 19:04:21,186 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 19:04:21,186 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:04:20" (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 19:04:21,252 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-26 19:04:21,252 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 19:04:21,252 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 19:04:25,666 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 19:04:25,667 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 07:04:25 BoogieIcfgContainer [2018-10-26 19:04:25,668 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 19:04:25,669 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 19:04:25,669 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 19:04:25,672 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 19:04:25,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 07:04:19" (1/3) ... [2018-10-26 19:04:25,673 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@343913b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 07:04:25, skipping insertion in model container [2018-10-26 19:04:25,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:04:20" (2/3) ... [2018-10-26 19:04:25,674 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@343913b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 07:04:25, skipping insertion in model container [2018-10-26 19:04:25,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 07:04:25" (3/3) ... [2018-10-26 19:04:25,676 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label34_false-unreach-call.c [2018-10-26 19:04:25,686 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 19:04:25,695 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 19:04:25,714 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 19:04:25,756 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-26 19:04:25,757 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 19:04:25,757 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 19:04:25,757 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 19:04:25,757 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 19:04:25,758 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 19:04:25,758 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 19:04:25,758 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 19:04:25,758 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 19:04:25,787 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states. [2018-10-26 19:04:25,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-10-26 19:04:25,794 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:04:25,795 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:04:25,797 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:04:25,802 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:04:25,802 INFO L82 PathProgramCache]: Analyzing trace with hash 384191218, now seen corresponding path program 1 times [2018-10-26 19:04:25,804 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:04:25,804 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:04:25,861 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:04:25,861 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:04:25,862 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:04:25,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:04:26,190 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-10-26 19:04:26,193 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 19:04:26,196 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:04:26,196 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 19:04:26,201 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:04:26,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:04:26,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:04:26,221 INFO L87 Difference]: Start difference. First operand 284 states. Second operand 4 states. [2018-10-26 19:04:29,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:04:29,742 INFO L93 Difference]: Finished difference Result 958 states and 1725 transitions. [2018-10-26 19:04:29,743 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:04:29,745 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2018-10-26 19:04:29,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:04:29,770 INFO L225 Difference]: With dead ends: 958 [2018-10-26 19:04:29,770 INFO L226 Difference]: Without dead ends: 667 [2018-10-26 19:04:29,776 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:04:29,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states. [2018-10-26 19:04:29,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 667. [2018-10-26 19:04:29,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 667 states. [2018-10-26 19:04:29,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 667 states to 667 states and 983 transitions. [2018-10-26 19:04:29,912 INFO L78 Accepts]: Start accepts. Automaton has 667 states and 983 transitions. Word has length 9 [2018-10-26 19:04:29,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:04:29,913 INFO L481 AbstractCegarLoop]: Abstraction has 667 states and 983 transitions. [2018-10-26 19:04:29,913 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:04:29,913 INFO L276 IsEmpty]: Start isEmpty. Operand 667 states and 983 transitions. [2018-10-26 19:04:29,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2018-10-26 19:04:29,918 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:04:29,919 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:04:29,919 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:04:29,920 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:04:29,920 INFO L82 PathProgramCache]: Analyzing trace with hash -1901067273, now seen corresponding path program 1 times [2018-10-26 19:04:29,921 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:04:29,921 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:04:29,922 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:04:29,922 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:04:29,922 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:04:30,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:04:30,635 WARN L179 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 9 [2018-10-26 19:04:30,671 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:04:30,672 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:04:30,672 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 19:04:30,674 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 19:04:30,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 19:04:30,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-26 19:04:30,675 INFO L87 Difference]: Start difference. First operand 667 states and 983 transitions. Second operand 5 states. [2018-10-26 19:04:36,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:04:36,116 INFO L93 Difference]: Finished difference Result 2465 states and 3702 transitions. [2018-10-26 19:04:36,116 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-26 19:04:36,116 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 79 [2018-10-26 19:04:36,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:04:36,127 INFO L225 Difference]: With dead ends: 2465 [2018-10-26 19:04:36,127 INFO L226 Difference]: Without dead ends: 1800 [2018-10-26 19:04:36,132 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 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 19:04:36,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1800 states. [2018-10-26 19:04:36,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1800 to 1795. [2018-10-26 19:04:36,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1795 states. [2018-10-26 19:04:36,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1795 states to 1795 states and 2358 transitions. [2018-10-26 19:04:36,206 INFO L78 Accepts]: Start accepts. Automaton has 1795 states and 2358 transitions. Word has length 79 [2018-10-26 19:04:36,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:04:36,206 INFO L481 AbstractCegarLoop]: Abstraction has 1795 states and 2358 transitions. [2018-10-26 19:04:36,206 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 19:04:36,207 INFO L276 IsEmpty]: Start isEmpty. Operand 1795 states and 2358 transitions. [2018-10-26 19:04:36,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2018-10-26 19:04:36,218 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:04:36,218 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:04:36,218 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:04:36,221 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:04:36,221 INFO L82 PathProgramCache]: Analyzing trace with hash -641785380, now seen corresponding path program 1 times [2018-10-26 19:04:36,222 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:04:36,222 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:04:36,223 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:04:36,223 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:04:36,223 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:04:36,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:04:36,723 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:04:36,724 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:04:36,724 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 19:04:36,726 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 19:04:36,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 19:04:36,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-26 19:04:36,727 INFO L87 Difference]: Start difference. First operand 1795 states and 2358 transitions. Second operand 5 states. [2018-10-26 19:04:40,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:04:40,267 INFO L93 Difference]: Finished difference Result 5120 states and 7022 transitions. [2018-10-26 19:04:40,268 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-26 19:04:40,268 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 137 [2018-10-26 19:04:40,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:04:40,287 INFO L225 Difference]: With dead ends: 5120 [2018-10-26 19:04:40,287 INFO L226 Difference]: Without dead ends: 3327 [2018-10-26 19:04:40,291 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 19:04:40,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3327 states. [2018-10-26 19:04:40,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3327 to 3108. [2018-10-26 19:04:40,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3108 states. [2018-10-26 19:04:40,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3108 states to 3108 states and 4156 transitions. [2018-10-26 19:04:40,358 INFO L78 Accepts]: Start accepts. Automaton has 3108 states and 4156 transitions. Word has length 137 [2018-10-26 19:04:40,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:04:40,358 INFO L481 AbstractCegarLoop]: Abstraction has 3108 states and 4156 transitions. [2018-10-26 19:04:40,359 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 19:04:40,359 INFO L276 IsEmpty]: Start isEmpty. Operand 3108 states and 4156 transitions. [2018-10-26 19:04:40,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2018-10-26 19:04:40,366 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:04:40,367 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:04:40,367 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:04:40,367 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:04:40,367 INFO L82 PathProgramCache]: Analyzing trace with hash 1620622288, now seen corresponding path program 1 times [2018-10-26 19:04:40,368 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:04:40,368 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:04:40,369 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:04:40,369 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:04:40,369 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:04:40,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:04:40,649 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-10-26 19:04:40,650 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:04:40,650 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 19:04:40,653 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:04:40,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:04:40,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:04:40,654 INFO L87 Difference]: Start difference. First operand 3108 states and 4156 transitions. Second operand 4 states. [2018-10-26 19:04:47,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:04:47,338 INFO L93 Difference]: Finished difference Result 11787 states and 15902 transitions. [2018-10-26 19:04:47,339 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:04:47,339 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 159 [2018-10-26 19:04:47,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:04:47,381 INFO L225 Difference]: With dead ends: 11787 [2018-10-26 19:04:47,382 INFO L226 Difference]: Without dead ends: 8681 [2018-10-26 19:04:47,388 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 19:04:47,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8681 states. [2018-10-26 19:04:47,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8681 to 8657. [2018-10-26 19:04:47,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8657 states. [2018-10-26 19:04:47,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8657 states to 8657 states and 10954 transitions. [2018-10-26 19:04:47,550 INFO L78 Accepts]: Start accepts. Automaton has 8657 states and 10954 transitions. Word has length 159 [2018-10-26 19:04:47,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:04:47,550 INFO L481 AbstractCegarLoop]: Abstraction has 8657 states and 10954 transitions. [2018-10-26 19:04:47,551 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:04:47,551 INFO L276 IsEmpty]: Start isEmpty. Operand 8657 states and 10954 transitions. [2018-10-26 19:04:47,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2018-10-26 19:04:47,555 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:04:47,555 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:04:47,555 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:04:47,556 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:04:47,556 INFO L82 PathProgramCache]: Analyzing trace with hash 1311004756, now seen corresponding path program 1 times [2018-10-26 19:04:47,556 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:04:47,556 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:04:47,557 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:04:47,557 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:04:47,558 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:04:47,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:04:47,801 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2018-10-26 19:04:47,801 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:04:47,802 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 19:04:47,802 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:04:47,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:04:47,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:04:47,803 INFO L87 Difference]: Start difference. First operand 8657 states and 10954 transitions. Second operand 4 states. [2018-10-26 19:04:50,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:04:50,777 INFO L93 Difference]: Finished difference Result 21772 states and 27942 transitions. [2018-10-26 19:04:50,779 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:04:50,779 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 203 [2018-10-26 19:04:50,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:04:50,835 INFO L225 Difference]: With dead ends: 21772 [2018-10-26 19:04:50,836 INFO L226 Difference]: Without dead ends: 13302 [2018-10-26 19:04:50,848 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:04:50,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13302 states. [2018-10-26 19:04:51,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13302 to 13095. [2018-10-26 19:04:51,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13095 states. [2018-10-26 19:04:51,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13095 states to 13095 states and 16112 transitions. [2018-10-26 19:04:51,101 INFO L78 Accepts]: Start accepts. Automaton has 13095 states and 16112 transitions. Word has length 203 [2018-10-26 19:04:51,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:04:51,102 INFO L481 AbstractCegarLoop]: Abstraction has 13095 states and 16112 transitions. [2018-10-26 19:04:51,102 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:04:51,102 INFO L276 IsEmpty]: Start isEmpty. Operand 13095 states and 16112 transitions. [2018-10-26 19:04:51,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2018-10-26 19:04:51,106 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:04:51,107 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:04:51,107 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:04:51,107 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:04:51,108 INFO L82 PathProgramCache]: Analyzing trace with hash 1028797281, now seen corresponding path program 1 times [2018-10-26 19:04:51,108 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:04:51,108 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:04:51,109 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:04:51,109 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:04:51,109 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:04:51,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:04:51,594 WARN L179 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 8 [2018-10-26 19:04:51,667 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:04:51,667 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:04:51,667 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-26 19:04:51,668 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 19:04:51,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 19:04:51,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-26 19:04:51,668 INFO L87 Difference]: Start difference. First operand 13095 states and 16112 transitions. Second operand 5 states. [2018-10-26 19:04:54,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:04:54,846 INFO L93 Difference]: Finished difference Result 26391 states and 32956 transitions. [2018-10-26 19:04:54,846 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-26 19:04:54,847 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 207 [2018-10-26 19:04:54,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:04:54,880 INFO L225 Difference]: With dead ends: 26391 [2018-10-26 19:04:54,881 INFO L226 Difference]: Without dead ends: 15340 [2018-10-26 19:04:54,893 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 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 19:04:54,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15340 states. [2018-10-26 19:04:55,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15340 to 14768. [2018-10-26 19:04:55,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14768 states. [2018-10-26 19:04:55,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14768 states to 14768 states and 17955 transitions. [2018-10-26 19:04:55,097 INFO L78 Accepts]: Start accepts. Automaton has 14768 states and 17955 transitions. Word has length 207 [2018-10-26 19:04:55,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:04:55,097 INFO L481 AbstractCegarLoop]: Abstraction has 14768 states and 17955 transitions. [2018-10-26 19:04:55,098 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 19:04:55,098 INFO L276 IsEmpty]: Start isEmpty. Operand 14768 states and 17955 transitions. [2018-10-26 19:04:55,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2018-10-26 19:04:55,102 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:04:55,102 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:04:55,102 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:04:55,103 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:04:55,103 INFO L82 PathProgramCache]: Analyzing trace with hash -935250753, now seen corresponding path program 1 times [2018-10-26 19:04:55,103 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:04:55,103 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:04:55,104 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:04:55,104 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:04:55,104 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:04:55,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:04:55,687 WARN L179 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 9 [2018-10-26 19:04:55,794 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 78 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:04:55,794 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:04:55,794 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 19:04:55,812 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:04:55,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:04:55,956 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:04:56,351 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:04:56,384 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 19:04:56,385 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2018-10-26 19:04:56,387 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-26 19:04:56,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-26 19:04:56,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-10-26 19:04:56,388 INFO L87 Difference]: Start difference. First operand 14768 states and 17955 transitions. Second operand 7 states. [2018-10-26 19:05:04,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:05:04,668 INFO L93 Difference]: Finished difference Result 32321 states and 39592 transitions. [2018-10-26 19:05:04,668 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-26 19:05:04,669 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 223 [2018-10-26 19:05:04,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:05:04,702 INFO L225 Difference]: With dead ends: 32321 [2018-10-26 19:05:04,702 INFO L226 Difference]: Without dead ends: 16983 [2018-10-26 19:05:04,717 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2018-10-26 19:05:04,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16983 states. [2018-10-26 19:05:04,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16983 to 14557. [2018-10-26 19:05:04,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14557 states. [2018-10-26 19:05:04,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14557 states to 14557 states and 16573 transitions. [2018-10-26 19:05:04,991 INFO L78 Accepts]: Start accepts. Automaton has 14557 states and 16573 transitions. Word has length 223 [2018-10-26 19:05:04,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:05:04,992 INFO L481 AbstractCegarLoop]: Abstraction has 14557 states and 16573 transitions. [2018-10-26 19:05:04,992 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-26 19:05:04,992 INFO L276 IsEmpty]: Start isEmpty. Operand 14557 states and 16573 transitions. [2018-10-26 19:05:05,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2018-10-26 19:05:05,001 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:05:05,002 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:05:05,002 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:05:05,002 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:05:05,002 INFO L82 PathProgramCache]: Analyzing trace with hash 320077830, now seen corresponding path program 1 times [2018-10-26 19:05:05,003 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:05:05,003 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:05:05,004 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:05:05,004 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:05:05,004 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:05:05,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:05:05,560 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 152 proven. 97 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-10-26 19:05:05,560 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:05:05,560 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 19:05:05,576 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:05:05,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:05:05,684 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:05:06,681 WARN L179 SmtUtils]: Spent 537.00 ms on a formula simplification. DAG size of input: 483 DAG size of output: 27 [2018-10-26 19:05:07,315 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 20 proven. 139 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2018-10-26 19:05:07,348 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-26 19:05:07,349 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3] total 6 [2018-10-26 19:05:07,350 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-26 19:05:07,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-26 19:05:07,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-10-26 19:05:07,351 INFO L87 Difference]: Start difference. First operand 14557 states and 16573 transitions. Second operand 7 states. [2018-10-26 19:05:07,543 WARN L179 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-10-26 19:05:18,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:05:18,112 INFO L93 Difference]: Finished difference Result 48051 states and 54784 transitions. [2018-10-26 19:05:18,113 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-26 19:05:18,113 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 290 [2018-10-26 19:05:18,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:05:18,154 INFO L225 Difference]: With dead ends: 48051 [2018-10-26 19:05:18,154 INFO L226 Difference]: Without dead ends: 32002 [2018-10-26 19:05:18,175 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 288 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=76, Invalid=196, Unknown=0, NotChecked=0, Total=272 [2018-10-26 19:05:18,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32002 states. [2018-10-26 19:05:18,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32002 to 20287. [2018-10-26 19:05:18,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20287 states. [2018-10-26 19:05:18,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20287 states to 20287 states and 22636 transitions. [2018-10-26 19:05:18,494 INFO L78 Accepts]: Start accepts. Automaton has 20287 states and 22636 transitions. Word has length 290 [2018-10-26 19:05:18,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:05:18,495 INFO L481 AbstractCegarLoop]: Abstraction has 20287 states and 22636 transitions. [2018-10-26 19:05:18,495 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-26 19:05:18,495 INFO L276 IsEmpty]: Start isEmpty. Operand 20287 states and 22636 transitions. [2018-10-26 19:05:18,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2018-10-26 19:05:18,508 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:05:18,509 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 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] [2018-10-26 19:05:18,509 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:05:18,509 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:05:18,509 INFO L82 PathProgramCache]: Analyzing trace with hash -1698347065, now seen corresponding path program 1 times [2018-10-26 19:05:18,510 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:05:18,510 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:05:18,510 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:05:18,511 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:05:18,511 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:05:18,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:05:19,071 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 250 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-10-26 19:05:19,071 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:05:19,071 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 19:05:19,072 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 19:05:19,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 19:05:19,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-26 19:05:19,073 INFO L87 Difference]: Start difference. First operand 20287 states and 22636 transitions. Second operand 5 states. [2018-10-26 19:05:22,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:05:22,537 INFO L93 Difference]: Finished difference Result 50586 states and 56539 transitions. [2018-10-26 19:05:22,538 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-26 19:05:22,538 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 306 [2018-10-26 19:05:22,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:05:22,588 INFO L225 Difference]: With dead ends: 50586 [2018-10-26 19:05:22,588 INFO L226 Difference]: Without dead ends: 30671 [2018-10-26 19:05:22,607 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 19:05:22,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30671 states. [2018-10-26 19:05:22,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30671 to 23984. [2018-10-26 19:05:22,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23984 states. [2018-10-26 19:05:22,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23984 states to 23984 states and 26250 transitions. [2018-10-26 19:05:22,933 INFO L78 Accepts]: Start accepts. Automaton has 23984 states and 26250 transitions. Word has length 306 [2018-10-26 19:05:22,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:05:22,934 INFO L481 AbstractCegarLoop]: Abstraction has 23984 states and 26250 transitions. [2018-10-26 19:05:22,934 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 19:05:22,934 INFO L276 IsEmpty]: Start isEmpty. Operand 23984 states and 26250 transitions. [2018-10-26 19:05:22,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2018-10-26 19:05:22,947 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:05:22,947 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:05:22,948 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:05:22,948 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:05:22,948 INFO L82 PathProgramCache]: Analyzing trace with hash -2026275391, now seen corresponding path program 1 times [2018-10-26 19:05:22,948 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:05:22,948 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:05:22,949 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:05:22,949 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:05:22,949 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:05:23,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:05:23,348 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 175 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2018-10-26 19:05:23,348 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:05:23,348 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 19:05:23,349 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:05:23,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:05:23,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:05:23,349 INFO L87 Difference]: Start difference. First operand 23984 states and 26250 transitions. Second operand 4 states. [2018-10-26 19:05:24,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:05:24,938 INFO L93 Difference]: Finished difference Result 47245 states and 51760 transitions. [2018-10-26 19:05:24,940 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:05:24,940 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 328 [2018-10-26 19:05:24,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:05:24,962 INFO L225 Difference]: With dead ends: 47245 [2018-10-26 19:05:24,963 INFO L226 Difference]: Without dead ends: 25113 [2018-10-26 19:05:24,978 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 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 19:05:24,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25113 states. [2018-10-26 19:05:25,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25113 to 24915. [2018-10-26 19:05:25,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24915 states. [2018-10-26 19:05:25,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24915 states to 24915 states and 27177 transitions. [2018-10-26 19:05:25,263 INFO L78 Accepts]: Start accepts. Automaton has 24915 states and 27177 transitions. Word has length 328 [2018-10-26 19:05:25,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:05:25,264 INFO L481 AbstractCegarLoop]: Abstraction has 24915 states and 27177 transitions. [2018-10-26 19:05:25,264 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:05:25,264 INFO L276 IsEmpty]: Start isEmpty. Operand 24915 states and 27177 transitions. [2018-10-26 19:05:25,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2018-10-26 19:05:25,277 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:05:25,278 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-26 19:05:25,278 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:05:25,278 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:05:25,278 INFO L82 PathProgramCache]: Analyzing trace with hash -1654317144, now seen corresponding path program 1 times [2018-10-26 19:05:25,279 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:05:25,279 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:05:25,279 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:05:25,280 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:05:25,281 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:05:25,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:05:25,821 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-26 19:05:26,700 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 89 proven. 195 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:05:26,701 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:05:26,701 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 19:05:26,709 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:05:26,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:05:26,807 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:05:27,413 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 119 proven. 165 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:05:27,434 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-26 19:05:27,435 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 10 [2018-10-26 19:05:27,435 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-26 19:05:27,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-26 19:05:27,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-10-26 19:05:27,436 INFO L87 Difference]: Start difference. First operand 24915 states and 27177 transitions. Second operand 11 states. [2018-10-26 19:05:36,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:05:36,542 INFO L93 Difference]: Finished difference Result 51909 states and 56482 transitions. [2018-10-26 19:05:36,542 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-26 19:05:36,542 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 342 [2018-10-26 19:05:36,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:05:36,568 INFO L225 Difference]: With dead ends: 51909 [2018-10-26 19:05:36,568 INFO L226 Difference]: Without dead ends: 27365 [2018-10-26 19:05:36,581 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 338 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=168, Invalid=338, Unknown=0, NotChecked=0, Total=506 [2018-10-26 19:05:36,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27365 states. [2018-10-26 19:05:36,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27365 to 21554. [2018-10-26 19:05:36,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21554 states. [2018-10-26 19:05:36,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21554 states to 21554 states and 23357 transitions. [2018-10-26 19:05:36,827 INFO L78 Accepts]: Start accepts. Automaton has 21554 states and 23357 transitions. Word has length 342 [2018-10-26 19:05:36,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:05:36,827 INFO L481 AbstractCegarLoop]: Abstraction has 21554 states and 23357 transitions. [2018-10-26 19:05:36,827 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-26 19:05:36,827 INFO L276 IsEmpty]: Start isEmpty. Operand 21554 states and 23357 transitions. [2018-10-26 19:05:36,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2018-10-26 19:05:36,840 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:05:36,841 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:05:36,841 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:05:36,841 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:05:36,841 INFO L82 PathProgramCache]: Analyzing trace with hash -13825021, now seen corresponding path program 1 times [2018-10-26 19:05:36,841 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:05:36,841 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:05:36,842 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:05:36,842 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:05:36,842 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:05:36,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:05:37,590 INFO L134 CoverageAnalysis]: Checked inductivity of 499 backedges. 311 proven. 181 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-10-26 19:05:37,591 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:05:37,591 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 19:05:37,605 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:05:37,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:05:37,723 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:05:37,945 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 13 [2018-10-26 19:05:38,343 INFO L134 CoverageAnalysis]: Checked inductivity of 499 backedges. 311 proven. 181 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-10-26 19:05:38,365 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-26 19:05:38,365 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 6 [2018-10-26 19:05:38,366 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-26 19:05:38,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-26 19:05:38,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-10-26 19:05:38,366 INFO L87 Difference]: Start difference. First operand 21554 states and 23357 transitions. Second operand 7 states. [2018-10-26 19:05:43,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:05:43,569 INFO L93 Difference]: Finished difference Result 53689 states and 57930 transitions. [2018-10-26 19:05:43,570 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-26 19:05:43,570 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 384 [2018-10-26 19:05:43,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:05:43,605 INFO L225 Difference]: With dead ends: 53689 [2018-10-26 19:05:43,605 INFO L226 Difference]: Without dead ends: 31202 [2018-10-26 19:05:43,622 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 389 GetRequests, 382 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-26 19:05:43,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31202 states. [2018-10-26 19:05:44,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31202 to 22282. [2018-10-26 19:05:44,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22282 states. [2018-10-26 19:05:44,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22282 states to 22282 states and 23963 transitions. [2018-10-26 19:05:44,376 INFO L78 Accepts]: Start accepts. Automaton has 22282 states and 23963 transitions. Word has length 384 [2018-10-26 19:05:44,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:05:44,377 INFO L481 AbstractCegarLoop]: Abstraction has 22282 states and 23963 transitions. [2018-10-26 19:05:44,377 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-26 19:05:44,377 INFO L276 IsEmpty]: Start isEmpty. Operand 22282 states and 23963 transitions. [2018-10-26 19:05:44,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2018-10-26 19:05:44,390 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:05:44,390 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-26 19:05:44,390 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:05:44,391 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:05:44,391 INFO L82 PathProgramCache]: Analyzing trace with hash 949268958, now seen corresponding path program 1 times [2018-10-26 19:05:44,391 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:05:44,391 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:05:44,392 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:05:44,392 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:05:44,392 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:05:44,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:05:45,353 WARN L179 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 11 [2018-10-26 19:05:45,586 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 90 proven. 212 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:05:45,586 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:05:45,586 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 19:05:45,597 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:05:45,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:05:45,700 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:05:49,092 WARN L179 SmtUtils]: Spent 1.62 s on a formula simplification. DAG size of input: 43 DAG size of output: 19 [2018-10-26 19:05:50,277 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 90 proven. 212 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:05:50,310 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-26 19:05:50,311 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4] total 8 [2018-10-26 19:05:50,311 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-26 19:05:50,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-26 19:05:50,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=41, Unknown=2, NotChecked=0, Total=72 [2018-10-26 19:05:50,312 INFO L87 Difference]: Start difference. First operand 22282 states and 23963 transitions. Second operand 9 states. [2018-10-26 19:05:51,816 WARN L179 SmtUtils]: Spent 738.00 ms on a formula simplification that was a NOOP. DAG size: 20 Received shutdown request... [2018-10-26 19:08:29,663 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-26 19:08:29,664 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-26 19:08:29,670 WARN L205 ceAbstractionStarter]: Timeout [2018-10-26 19:08:29,670 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 07:08:29 BoogieIcfgContainer [2018-10-26 19:08:29,670 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 19:08:29,671 INFO L168 Benchmark]: Toolchain (without parser) took 249841.87 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 3.3 GB in the end (delta: -1.9 GB). Peak memory consumption was 230.6 MB. Max. memory is 7.1 GB. [2018-10-26 19:08:29,672 INFO L168 Benchmark]: CDTParser took 0.23 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 19:08:29,672 INFO L168 Benchmark]: CACSL2BoogieTranslator took 953.20 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. [2018-10-26 19:08:29,673 INFO L168 Benchmark]: Boogie Procedure Inliner took 260.20 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 759.7 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -853.8 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. [2018-10-26 19:08:29,674 INFO L168 Benchmark]: Boogie Preprocessor took 139.93 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-26 19:08:29,674 INFO L168 Benchmark]: RCFGBuilder took 4482.55 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 199.7 MB). Peak memory consumption was 199.7 MB. Max. memory is 7.1 GB. [2018-10-26 19:08:29,675 INFO L168 Benchmark]: TraceAbstraction took 244001.44 ms. Allocated memory was 2.3 GB in the beginning and 3.6 GB in the end (delta: 1.3 GB). Free memory was 2.0 GB in the beginning and 3.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 61.6 MB. Max. memory is 7.1 GB. [2018-10-26 19:08:29,680 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 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 953.20 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 260.20 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 759.7 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -853.8 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 139.93 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 4482.55 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 199.7 MB). Peak memory consumption was 199.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 244001.44 ms. Allocated memory was 2.3 GB in the beginning and 3.6 GB in the end (delta: 1.3 GB). Free memory was 2.0 GB in the beginning and 3.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 61.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 30]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 30). Cancelled while BasicCegarLoop was constructing difference of abstraction (22282states) and FLOYD_HOARE automaton (currently 10 states, 9 states before enhancement),while ReachableStatesComputation was computing reachable states (22045 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 284 locations, 1 error locations. TIMEOUT Result, 243.9s OverallTime, 13 OverallIterations, 5 TraceHistogramMax, 223.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2586 SDtfs, 12209 SDslu, 2444 SDs, 0 SdLazy, 30231 SolverSat, 5657 SolverUnsat, 193 SolverUnknown, 0 SolverNotchecked, 210.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1709 GetRequests, 1623 SyntacticMatches, 5 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 11.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24915occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 3.0s AutomataMinimizationTime, 12 MinimizatonAttempts, 36784 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 13.9s InterpolantComputationTime, 4678 NumberOfCodeBlocks, 4678 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 4660 ConstructedInterpolants, 386 QuantifiedInterpolants, 10857412 SizeOfPredicates, 4 NumberOfNonLiveVariables, 2243 ConjunctsInSsa, 36 ConjunctsInUnsatCore, 18 InterpolantComputations, 9 PerfectInterpolantSequences, 2272/3658 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown