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_label55_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 16:26:55,941 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 16:26:55,945 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 16:26:55,962 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 16:26:55,962 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 16:26:55,964 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 16:26:55,965 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 16:26:55,967 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 16:26:55,970 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 16:26:55,972 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 16:26:55,974 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 16:26:55,975 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 16:26:55,976 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 16:26:55,977 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 16:26:55,984 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 16:26:55,985 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 16:26:55,988 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 16:26:55,990 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 16:26:55,992 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 16:26:55,994 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 16:26:55,995 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 16:26:55,996 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 16:26:55,998 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 16:26:55,998 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 16:26:55,999 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 16:26:56,000 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 16:26:56,001 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 16:26:56,001 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 16:26:56,002 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 16:26:56,003 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 16:26:56,004 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 16:26:56,004 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-24 16:26:56,004 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 16:26:56,005 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 16:26:56,006 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 16:26:56,006 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 16:26:56,007 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-24 16:26:56,021 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 16:26:56,022 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 16:26:56,023 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 16:26:56,023 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 16:26:56,023 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 16:26:56,024 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 16:26:56,024 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 16:26:56,024 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 16:26:56,024 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 16:26:56,025 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 16:26:56,025 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 16:26:56,025 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 16:26:56,025 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 16:26:56,025 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 16:26:56,025 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 16:26:56,026 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 16:26:56,026 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 16:26:56,026 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 16:26:56,026 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 16:26:56,026 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 16:26:56,027 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 16:26:56,027 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 16:26:56,027 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 16:26:56,027 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 16:26:56,027 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 16:26:56,028 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 16:26:56,028 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 16:26:56,028 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 16:26:56,084 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 16:26:56,100 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 16:26:56,104 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 16:26:56,106 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 16:26:56,106 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 16:26:56,107 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label55_true-unreach-call.c [2018-10-24 16:26:56,175 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ef96aa799/e82cdc34aeb34f56b5da4e40b9439375/FLAGbb9af83b1 [2018-10-24 16:26:56,950 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 16:26:56,951 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label55_true-unreach-call.c [2018-10-24 16:26:56,996 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ef96aa799/e82cdc34aeb34f56b5da4e40b9439375/FLAGbb9af83b1 [2018-10-24 16:26:57,021 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ef96aa799/e82cdc34aeb34f56b5da4e40b9439375 [2018-10-24 16:26:57,035 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 16:26:57,037 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 16:26:57,038 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 16:26:57,038 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 16:26:57,043 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 16:26:57,044 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 04:26:57" (1/1) ... [2018-10-24 16:26:57,048 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61ebb76c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:26:57, skipping insertion in model container [2018-10-24 16:26:57,048 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 04:26:57" (1/1) ... [2018-10-24 16:26:57,060 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 16:26:57,238 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 16:26:58,697 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 16:26:58,701 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 16:26:59,591 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 16:26:59,628 INFO L193 MainTranslator]: Completed translation [2018-10-24 16:26:59,629 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:26:59 WrapperNode [2018-10-24 16:26:59,629 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 16:26:59,631 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 16:26:59,634 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 16:26:59,634 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 16:26:59,645 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:26:59" (1/1) ... [2018-10-24 16:26:59,721 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:26:59" (1/1) ... [2018-10-24 16:27:00,479 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 16:27:00,479 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 16:27:00,480 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 16:27:00,480 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 16:27:00,492 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:26:59" (1/1) ... [2018-10-24 16:27:00,493 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:26:59" (1/1) ... [2018-10-24 16:27:00,597 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:26:59" (1/1) ... [2018-10-24 16:27:00,597 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:26:59" (1/1) ... [2018-10-24 16:27:00,805 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:26:59" (1/1) ... [2018-10-24 16:27:00,838 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:26:59" (1/1) ... [2018-10-24 16:27:00,968 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:26:59" (1/1) ... [2018-10-24 16:27:01,049 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 16:27:01,050 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 16:27:01,050 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 16:27:01,050 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 16:27:01,051 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:26:59" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 16:27:01,122 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-24 16:27:01,122 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 16:27:01,123 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 16:27:15,085 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 16:27:15,086 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 04:27:15 BoogieIcfgContainer [2018-10-24 16:27:15,087 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 16:27:15,088 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 16:27:15,088 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 16:27:15,091 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 16:27:15,091 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 04:26:57" (1/3) ... [2018-10-24 16:27:15,092 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a00226c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 04:27:15, skipping insertion in model container [2018-10-24 16:27:15,092 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:26:59" (2/3) ... [2018-10-24 16:27:15,093 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a00226c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 04:27:15, skipping insertion in model container [2018-10-24 16:27:15,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 04:27:15" (3/3) ... [2018-10-24 16:27:15,097 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label55_true-unreach-call.c [2018-10-24 16:27:15,106 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 16:27:15,116 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 16:27:15,134 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 16:27:15,188 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 16:27:15,189 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 16:27:15,189 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 16:27:15,189 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 16:27:15,189 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 16:27:15,189 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 16:27:15,190 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 16:27:15,190 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 16:27:15,190 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 16:27:15,235 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states. [2018-10-24 16:27:15,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-10-24 16:27:15,254 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:27:15,255 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, 1] [2018-10-24 16:27:15,259 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:27:15,265 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:27:15,265 INFO L82 PathProgramCache]: Analyzing trace with hash 55000978, now seen corresponding path program 1 times [2018-10-24 16:27:15,267 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:27:15,268 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:27:15,321 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:27:15,322 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:27:15,322 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:27:15,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:27:15,867 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-10-24 16:27:16,748 WARN L179 SmtUtils]: Spent 819.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 27 [2018-10-24 16:27:16,911 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 4 [2018-10-24 16:27:17,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:27:17,170 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:27:17,171 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:27:17,175 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 16:27:17,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 16:27:17,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:27:17,194 INFO L87 Difference]: Start difference. First operand 1099 states. Second operand 5 states. [2018-10-24 16:27:36,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:27:36,475 INFO L93 Difference]: Finished difference Result 4624 states and 8784 transitions. [2018-10-24 16:27:36,475 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 16:27:36,477 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 49 [2018-10-24 16:27:36,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:27:36,530 INFO L225 Difference]: With dead ends: 4624 [2018-10-24 16:27:36,531 INFO L226 Difference]: Without dead ends: 3515 [2018-10-24 16:27:36,542 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-24 16:27:36,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3515 states. [2018-10-24 16:27:36,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3515 to 3514. [2018-10-24 16:27:36,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3514 states. [2018-10-24 16:27:36,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3514 states to 3514 states and 5233 transitions. [2018-10-24 16:27:36,734 INFO L78 Accepts]: Start accepts. Automaton has 3514 states and 5233 transitions. Word has length 49 [2018-10-24 16:27:36,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:27:36,735 INFO L481 AbstractCegarLoop]: Abstraction has 3514 states and 5233 transitions. [2018-10-24 16:27:36,735 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 16:27:36,735 INFO L276 IsEmpty]: Start isEmpty. Operand 3514 states and 5233 transitions. [2018-10-24 16:27:36,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2018-10-24 16:27:36,744 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:27:36,744 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, 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] [2018-10-24 16:27:36,745 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:27:36,745 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:27:36,745 INFO L82 PathProgramCache]: Analyzing trace with hash 1072622854, now seen corresponding path program 1 times [2018-10-24 16:27:36,745 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:27:36,746 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:27:36,747 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:27:36,747 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:27:36,747 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:27:36,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:27:37,174 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2018-10-24 16:27:37,175 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:27:37,175 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 16:27:37,184 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:27:37,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:27:37,258 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:27:37,413 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2018-10-24 16:27:37,446 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 16:27:37,446 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2018-10-24 16:27:37,448 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 16:27:37,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 16:27:37,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:27:37,448 INFO L87 Difference]: Start difference. First operand 3514 states and 5233 transitions. Second operand 5 states. [2018-10-24 16:27:55,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:27:55,146 INFO L93 Difference]: Finished difference Result 9440 states and 15273 transitions. [2018-10-24 16:27:55,146 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:27:55,146 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 175 [2018-10-24 16:27:55,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:27:55,181 INFO L225 Difference]: With dead ends: 9440 [2018-10-24 16:27:55,182 INFO L226 Difference]: Without dead ends: 6716 [2018-10-24 16:27:55,187 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:27:55,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6716 states. [2018-10-24 16:27:55,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6716 to 6697. [2018-10-24 16:27:55,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6697 states. [2018-10-24 16:27:55,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6697 states to 6697 states and 9386 transitions. [2018-10-24 16:27:55,318 INFO L78 Accepts]: Start accepts. Automaton has 6697 states and 9386 transitions. Word has length 175 [2018-10-24 16:27:55,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:27:55,319 INFO L481 AbstractCegarLoop]: Abstraction has 6697 states and 9386 transitions. [2018-10-24 16:27:55,319 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 16:27:55,319 INFO L276 IsEmpty]: Start isEmpty. Operand 6697 states and 9386 transitions. [2018-10-24 16:27:55,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2018-10-24 16:27:55,327 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:27:55,328 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, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:27:55,328 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:27:55,328 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:27:55,328 INFO L82 PathProgramCache]: Analyzing trace with hash 1032083347, now seen corresponding path program 1 times [2018-10-24 16:27:55,329 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:27:55,329 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:27:55,330 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:27:55,330 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:27:55,330 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:27:55,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:27:55,619 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-10-24 16:27:55,619 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:27:55,619 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-24 16:27:55,620 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 16:27:55,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 16:27:55,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 16:27:55,621 INFO L87 Difference]: Start difference. First operand 6697 states and 9386 transitions. Second operand 3 states. [2018-10-24 16:28:01,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:28:01,471 INFO L93 Difference]: Finished difference Result 17338 states and 25183 transitions. [2018-10-24 16:28:01,472 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 16:28:01,472 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 248 [2018-10-24 16:28:01,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:28:01,523 INFO L225 Difference]: With dead ends: 17338 [2018-10-24 16:28:01,524 INFO L226 Difference]: Without dead ends: 11431 [2018-10-24 16:28:01,533 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 16:28:01,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11431 states. [2018-10-24 16:28:01,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11431 to 11430. [2018-10-24 16:28:01,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11430 states. [2018-10-24 16:28:01,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11430 states to 11430 states and 15069 transitions. [2018-10-24 16:28:01,716 INFO L78 Accepts]: Start accepts. Automaton has 11430 states and 15069 transitions. Word has length 248 [2018-10-24 16:28:01,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:28:01,717 INFO L481 AbstractCegarLoop]: Abstraction has 11430 states and 15069 transitions. [2018-10-24 16:28:01,717 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 16:28:01,717 INFO L276 IsEmpty]: Start isEmpty. Operand 11430 states and 15069 transitions. [2018-10-24 16:28:01,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2018-10-24 16:28:01,723 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:28:01,724 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:28:01,724 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:28:01,725 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:28:01,725 INFO L82 PathProgramCache]: Analyzing trace with hash -692133785, now seen corresponding path program 1 times [2018-10-24 16:28:01,725 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:28:01,725 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:28:01,726 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:28:01,726 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:28:01,726 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:28:01,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:28:02,068 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 97 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:28:02,068 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:28:02,068 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 16:28:02,077 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:28:02,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:28:02,157 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:28:02,241 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 189 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:28:02,273 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 16:28:02,273 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2018-10-24 16:28:02,274 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 16:28:02,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 16:28:02,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 16:28:02,275 INFO L87 Difference]: Start difference. First operand 11430 states and 15069 transitions. Second operand 6 states. [2018-10-24 16:28:33,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:28:33,689 INFO L93 Difference]: Finished difference Result 64101 states and 87604 transitions. [2018-10-24 16:28:33,697 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-24 16:28:33,697 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 250 [2018-10-24 16:28:33,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:28:33,845 INFO L225 Difference]: With dead ends: 64101 [2018-10-24 16:28:33,846 INFO L226 Difference]: Without dead ends: 53461 [2018-10-24 16:28:33,865 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2018-10-24 16:28:33,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53461 states. [2018-10-24 16:28:34,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53461 to 53291. [2018-10-24 16:28:34,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53291 states. [2018-10-24 16:28:34,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53291 states to 53291 states and 67390 transitions. [2018-10-24 16:28:34,665 INFO L78 Accepts]: Start accepts. Automaton has 53291 states and 67390 transitions. Word has length 250 [2018-10-24 16:28:34,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:28:34,666 INFO L481 AbstractCegarLoop]: Abstraction has 53291 states and 67390 transitions. [2018-10-24 16:28:34,666 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 16:28:34,666 INFO L276 IsEmpty]: Start isEmpty. Operand 53291 states and 67390 transitions. [2018-10-24 16:28:34,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 475 [2018-10-24 16:28:34,704 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:28:34,704 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, 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, 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] [2018-10-24 16:28:34,705 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:28:34,705 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:28:34,705 INFO L82 PathProgramCache]: Analyzing trace with hash 473429871, now seen corresponding path program 1 times [2018-10-24 16:28:34,705 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:28:34,705 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:28:34,706 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:28:34,706 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:28:34,707 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:28:34,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:28:35,340 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 140 proven. 132 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2018-10-24 16:28:35,341 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:28:35,341 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 16:28:35,351 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:28:35,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:28:35,470 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:28:35,909 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 325 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2018-10-24 16:28:35,929 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 16:28:35,929 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2018-10-24 16:28:35,930 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 16:28:35,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 16:28:35,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:28:35,932 INFO L87 Difference]: Start difference. First operand 53291 states and 67390 transitions. Second operand 5 states. [2018-10-24 16:28:50,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:28:50,112 INFO L93 Difference]: Finished difference Result 222466 states and 283288 transitions. [2018-10-24 16:28:50,112 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 16:28:50,112 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 474 [2018-10-24 16:28:50,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:28:50,332 INFO L225 Difference]: With dead ends: 222466 [2018-10-24 16:28:50,332 INFO L226 Difference]: Without dead ends: 169965 [2018-10-24 16:28:50,399 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 476 GetRequests, 473 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:28:50,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169965 states. [2018-10-24 16:28:51,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169965 to 127356. [2018-10-24 16:28:51,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127356 states. [2018-10-24 16:28:52,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127356 states to 127356 states and 152710 transitions. [2018-10-24 16:28:52,127 INFO L78 Accepts]: Start accepts. Automaton has 127356 states and 152710 transitions. Word has length 474 [2018-10-24 16:28:52,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:28:52,128 INFO L481 AbstractCegarLoop]: Abstraction has 127356 states and 152710 transitions. [2018-10-24 16:28:52,128 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 16:28:52,129 INFO L276 IsEmpty]: Start isEmpty. Operand 127356 states and 152710 transitions. [2018-10-24 16:28:52,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 535 [2018-10-24 16:28:52,172 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:28:52,173 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, 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, 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] [2018-10-24 16:28:52,173 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:28:52,173 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:28:52,174 INFO L82 PathProgramCache]: Analyzing trace with hash 833228068, now seen corresponding path program 1 times [2018-10-24 16:28:52,174 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:28:52,174 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:28:52,175 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:28:52,175 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:28:52,175 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:28:52,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:28:53,078 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 326 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2018-10-24 16:28:53,079 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:28:53,079 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:28:53,080 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:28:53,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:28:53,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:28:53,081 INFO L87 Difference]: Start difference. First operand 127356 states and 152710 transitions. Second operand 4 states. [2018-10-24 16:29:06,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:29:06,129 INFO L93 Difference]: Finished difference Result 279950 states and 337684 transitions. [2018-10-24 16:29:06,130 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:29:06,130 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 534 [2018-10-24 16:29:06,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:29:06,408 INFO L225 Difference]: With dead ends: 279950 [2018-10-24 16:29:06,409 INFO L226 Difference]: Without dead ends: 153384 [2018-10-24 16:29:06,498 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:29:06,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153384 states. [2018-10-24 16:29:08,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153384 to 150202. [2018-10-24 16:29:08,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150202 states. [2018-10-24 16:29:08,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150202 states to 150202 states and 174974 transitions. [2018-10-24 16:29:08,608 INFO L78 Accepts]: Start accepts. Automaton has 150202 states and 174974 transitions. Word has length 534 [2018-10-24 16:29:08,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:29:08,609 INFO L481 AbstractCegarLoop]: Abstraction has 150202 states and 174974 transitions. [2018-10-24 16:29:08,609 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:29:08,609 INFO L276 IsEmpty]: Start isEmpty. Operand 150202 states and 174974 transitions. [2018-10-24 16:29:08,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 594 [2018-10-24 16:29:08,663 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:29:08,664 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, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 16:29:08,664 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:29:08,664 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:29:08,665 INFO L82 PathProgramCache]: Analyzing trace with hash 316794048, now seen corresponding path program 1 times [2018-10-24 16:29:08,665 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:29:08,665 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:29:08,666 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:29:08,666 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:29:08,666 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:29:08,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:29:09,248 WARN L179 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-10-24 16:29:09,866 WARN L179 SmtUtils]: Spent 566.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 28 [2018-10-24 16:29:10,230 WARN L179 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 34 [2018-10-24 16:29:10,954 INFO L134 CoverageAnalysis]: Checked inductivity of 581 backedges. 409 proven. 125 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2018-10-24 16:29:10,955 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:29:10,955 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 16:29:10,963 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:29:11,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:29:11,121 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:29:11,444 INFO L134 CoverageAnalysis]: Checked inductivity of 581 backedges. 140 proven. 0 refuted. 0 times theorem prover too weak. 441 trivial. 0 not checked. [2018-10-24 16:29:11,483 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 16:29:11,483 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2018-10-24 16:29:11,486 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-24 16:29:11,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-24 16:29:11,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 16:29:11,486 INFO L87 Difference]: Start difference. First operand 150202 states and 174974 transitions. Second operand 8 states. [2018-10-24 16:29:38,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:29:38,931 INFO L93 Difference]: Finished difference Result 388653 states and 446311 transitions. [2018-10-24 16:29:38,932 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 16:29:38,932 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 593 [2018-10-24 16:29:38,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:29:39,204 INFO L225 Difference]: With dead ends: 388653 [2018-10-24 16:29:39,204 INFO L226 Difference]: Without dead ends: 209232 [2018-10-24 16:29:39,315 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 606 GetRequests, 595 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2018-10-24 16:29:39,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209232 states. [2018-10-24 16:29:42,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209232 to 185580. [2018-10-24 16:29:42,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185580 states. [2018-10-24 16:29:42,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185580 states to 185580 states and 207492 transitions. [2018-10-24 16:29:42,290 INFO L78 Accepts]: Start accepts. Automaton has 185580 states and 207492 transitions. Word has length 593 [2018-10-24 16:29:42,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:29:42,290 INFO L481 AbstractCegarLoop]: Abstraction has 185580 states and 207492 transitions. [2018-10-24 16:29:42,290 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-24 16:29:42,290 INFO L276 IsEmpty]: Start isEmpty. Operand 185580 states and 207492 transitions. [2018-10-24 16:29:42,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 741 [2018-10-24 16:29:42,328 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:29:42,329 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:29:42,330 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:29:42,330 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:29:42,330 INFO L82 PathProgramCache]: Analyzing trace with hash 1031977784, now seen corresponding path program 1 times [2018-10-24 16:29:42,330 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:29:42,330 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:29:42,331 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:29:42,332 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:29:42,332 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:29:42,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:29:44,583 INFO L134 CoverageAnalysis]: Checked inductivity of 1120 backedges. 624 proven. 0 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2018-10-24 16:29:44,583 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:29:44,584 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:29:44,584 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:29:44,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:29:44,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:29:44,585 INFO L87 Difference]: Start difference. First operand 185580 states and 207492 transitions. Second operand 4 states. [2018-10-24 16:29:55,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:29:55,810 INFO L93 Difference]: Finished difference Result 377443 states and 422615 transitions. [2018-10-24 16:29:55,811 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:29:55,811 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 740 [2018-10-24 16:29:55,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:29:56,086 INFO L225 Difference]: With dead ends: 377443 [2018-10-24 16:29:56,086 INFO L226 Difference]: Without dead ends: 192653 [2018-10-24 16:29:57,701 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 4 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:29:57,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192653 states. [2018-10-24 16:30:01,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192653 to 190285. [2018-10-24 16:30:01,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190285 states. [2018-10-24 16:30:01,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190285 states to 190285 states and 205754 transitions. [2018-10-24 16:30:01,347 INFO L78 Accepts]: Start accepts. Automaton has 190285 states and 205754 transitions. Word has length 740 [2018-10-24 16:30:01,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:30:01,349 INFO L481 AbstractCegarLoop]: Abstraction has 190285 states and 205754 transitions. [2018-10-24 16:30:01,350 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:30:01,350 INFO L276 IsEmpty]: Start isEmpty. Operand 190285 states and 205754 transitions. [2018-10-24 16:30:01,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 797 [2018-10-24 16:30:01,385 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:30:01,386 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, 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, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:30:01,386 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:30:01,386 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:30:01,386 INFO L82 PathProgramCache]: Analyzing trace with hash -1449663697, now seen corresponding path program 1 times [2018-10-24 16:30:01,387 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:30:01,387 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:30:01,387 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:30:01,388 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:30:01,388 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:30:01,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:30:07,004 INFO L134 CoverageAnalysis]: Checked inductivity of 908 backedges. 633 proven. 0 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2018-10-24 16:30:07,004 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:30:07,005 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:30:07,005 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 16:30:07,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 16:30:07,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:30:07,006 INFO L87 Difference]: Start difference. First operand 190285 states and 205754 transitions. Second operand 5 states. [2018-10-24 16:30:20,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:30:20,411 INFO L93 Difference]: Finished difference Result 459447 states and 496916 transitions. [2018-10-24 16:30:20,411 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 16:30:20,411 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 796 [2018-10-24 16:30:20,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:30:20,667 INFO L225 Difference]: With dead ends: 459447 [2018-10-24 16:30:20,667 INFO L226 Difference]: Without dead ends: 269952 [2018-10-24 16:30:20,728 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 [2018-10-24 16:30:20,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269952 states. [2018-10-24 16:30:23,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269952 to 235238. [2018-10-24 16:30:23,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235238 states. [2018-10-24 16:30:23,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235238 states to 235238 states and 250729 transitions. [2018-10-24 16:30:23,275 INFO L78 Accepts]: Start accepts. Automaton has 235238 states and 250729 transitions. Word has length 796 [2018-10-24 16:30:23,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:30:23,276 INFO L481 AbstractCegarLoop]: Abstraction has 235238 states and 250729 transitions. [2018-10-24 16:30:23,276 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 16:30:23,276 INFO L276 IsEmpty]: Start isEmpty. Operand 235238 states and 250729 transitions. [2018-10-24 16:30:24,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1436 [2018-10-24 16:30:24,215 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:30:24,217 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:30:24,217 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:30:24,217 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:30:24,218 INFO L82 PathProgramCache]: Analyzing trace with hash 1792760065, now seen corresponding path program 1 times [2018-10-24 16:30:24,218 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:30:24,218 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:30:24,219 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:30:24,219 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:30:24,219 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:30:24,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:30:26,468 INFO L134 CoverageAnalysis]: Checked inductivity of 1619 backedges. 1311 proven. 0 refuted. 0 times theorem prover too weak. 308 trivial. 0 not checked. [2018-10-24 16:30:26,468 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:30:26,468 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:30:26,469 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 16:30:26,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 16:30:26,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 16:30:26,470 INFO L87 Difference]: Start difference. First operand 235238 states and 250729 transitions. Second operand 3 states. [2018-10-24 16:30:36,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:30:36,608 INFO L93 Difference]: Finished difference Result 512312 states and 545808 transitions. [2018-10-24 16:30:36,608 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 16:30:36,608 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 1435 [2018-10-24 16:30:36,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:30:36,927 INFO L225 Difference]: With dead ends: 512312 [2018-10-24 16:30:36,928 INFO L226 Difference]: Without dead ends: 277864 [2018-10-24 16:30:37,044 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 16:30:37,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277864 states. [2018-10-24 16:30:40,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277864 to 271494. [2018-10-24 16:30:40,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271494 states. [2018-10-24 16:30:40,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271494 states to 271494 states and 288314 transitions. [2018-10-24 16:30:40,881 INFO L78 Accepts]: Start accepts. Automaton has 271494 states and 288314 transitions. Word has length 1435 [2018-10-24 16:30:40,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:30:40,882 INFO L481 AbstractCegarLoop]: Abstraction has 271494 states and 288314 transitions. [2018-10-24 16:30:40,882 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 16:30:40,882 INFO L276 IsEmpty]: Start isEmpty. Operand 271494 states and 288314 transitions. [2018-10-24 16:30:41,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1559 [2018-10-24 16:30:41,013 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:30:41,014 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:30:41,014 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:30:41,014 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:30:41,015 INFO L82 PathProgramCache]: Analyzing trace with hash 1499844555, now seen corresponding path program 1 times [2018-10-24 16:30:41,015 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:30:41,015 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:30:41,016 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:30:41,016 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:30:41,016 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:30:41,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2018-10-24 16:30:41,668 FATAL L265 ToolchainWalker]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Timeout exceeded at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.interpolate(Interpolator.java:215) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:201) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:919) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.managedscript.ManagedScript.getInterpolants(ManagedScript.java:200) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:282) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsTree(InterpolatingTraceCheckCraig.java:271) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:207) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:109) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructCraig(TraceCheckConstructor.java:211) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructTraceCheck(TraceCheckConstructor.java:183) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.get(TraceCheckConstructor.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.MultiTrackRefinementStrategy.getTraceCheck(MultiTrackRefinementStrategy.java:234) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:223) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:197) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:70) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:435) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:376) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:312) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:123) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2018-10-24 16:30:41,672 INFO L168 Benchmark]: Toolchain (without parser) took 224637.01 ms. Allocated memory was 1.5 GB in the beginning and 4.5 GB in the end (delta: 3.0 GB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -697.1 MB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. [2018-10-24 16:30:41,674 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 16:30:41,674 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2591.84 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. [2018-10-24 16:30:41,675 INFO L168 Benchmark]: Boogie Procedure Inliner took 848.45 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 832.0 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 83.8 MB. Max. memory is 7.1 GB. [2018-10-24 16:30:41,677 INFO L168 Benchmark]: Boogie Preprocessor took 569.80 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: 75.4 MB). Peak memory consumption was 75.4 MB. Max. memory is 7.1 GB. [2018-10-24 16:30:41,678 INFO L168 Benchmark]: RCFGBuilder took 14037.15 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: 46.4 MB). Peak memory consumption was 590.9 MB. Max. memory is 7.1 GB. [2018-10-24 16:30:41,680 INFO L168 Benchmark]: TraceAbstraction took 206584.08 ms. Allocated memory was 2.6 GB in the beginning and 4.5 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: -40.4 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. [2018-10-24 16:30:41,687 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 2591.84 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 848.45 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 832.0 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 83.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 569.80 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: 75.4 MB). Peak memory consumption was 75.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 14037.15 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: 46.4 MB). Peak memory consumption was 590.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 206584.08 ms. Allocated memory was 2.6 GB in the beginning and 4.5 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: -40.4 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: Timeout exceeded de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: Timeout exceeded: de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.interpolate(Interpolator.java:215) RESULT: Ultimate could not prove your program: Toolchain returned no result. Completed graceful shutdown