java -Xss4m -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label02_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-71425fa [2018-07-22 12:14:07,750 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-22 12:14:07,752 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-22 12:14:07,769 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-22 12:14:07,769 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-22 12:14:07,770 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-22 12:14:07,771 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-22 12:14:07,778 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-22 12:14:07,780 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-22 12:14:07,782 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-22 12:14:07,783 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-22 12:14:07,783 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-22 12:14:07,784 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-22 12:14:07,787 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-22 12:14:07,788 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-22 12:14:07,789 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-22 12:14:07,792 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-22 12:14:07,794 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-22 12:14:07,808 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-22 12:14:07,809 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-22 12:14:07,810 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-22 12:14:07,811 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-22 12:14:07,813 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-22 12:14:07,814 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-22 12:14:07,814 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-22 12:14:07,815 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-22 12:14:07,815 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-22 12:14:07,816 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-22 12:14:07,822 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-22 12:14:07,823 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-22 12:14:07,824 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-22 12:14:07,824 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-22 12:14:07,824 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-22 12:14:07,825 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-22 12:14:07,826 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-22 12:14:07,826 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-22 12:14:07,827 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-07-22 12:14:07,849 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-22 12:14:07,853 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-22 12:14:07,854 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-22 12:14:07,854 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-07-22 12:14:07,854 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-07-22 12:14:07,855 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-07-22 12:14:07,855 INFO L133 SettingsManager]: * Use SBE=true [2018-07-22 12:14:07,855 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-22 12:14:07,855 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-22 12:14:07,855 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-22 12:14:07,856 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-22 12:14:07,856 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-22 12:14:07,856 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-22 12:14:07,856 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-22 12:14:07,856 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-22 12:14:07,857 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-22 12:14:07,859 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-22 12:14:07,859 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-22 12:14:07,860 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-22 12:14:07,860 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-22 12:14:07,860 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-22 12:14:07,860 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-07-22 12:14:07,860 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-22 12:14:07,861 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-22 12:14:07,861 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-07-22 12:14:07,861 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-22 12:14:07,861 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-22 12:14:07,861 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-22 12:14:07,861 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-22 12:14:07,912 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-22 12:14:07,927 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-22 12:14:07,933 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-22 12:14:07,935 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-22 12:14:07,935 INFO L276 PluginConnector]: CDTParser initialized [2018-07-22 12:14:07,936 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label02_true-unreach-call.c [2018-07-22 12:14:08,295 INFO L220 CDTParser]: Created temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/f6c575338/a730a25d4f3349a0a3075132d4d3cda6/FLAG71afbc93f [2018-07-22 12:14:08,840 INFO L276 CDTParser]: Found 1 translation units. [2018-07-22 12:14:08,841 INFO L158 CDTParser]: Scanning /storage/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label02_true-unreach-call.c [2018-07-22 12:14:08,899 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/f6c575338/a730a25d4f3349a0a3075132d4d3cda6/FLAG71afbc93f [2018-07-22 12:14:08,920 INFO L332 CDTParser]: Successfully deleted /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/f6c575338/a730a25d4f3349a0a3075132d4d3cda6 [2018-07-22 12:14:08,933 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-22 12:14:08,941 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-22 12:14:08,943 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-22 12:14:08,943 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-22 12:14:08,950 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-22 12:14:08,952 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 12:14:08" (1/1) ... [2018-07-22 12:14:08,955 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ee00b91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:14:08, skipping insertion in model container [2018-07-22 12:14:08,955 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 12:14:08" (1/1) ... [2018-07-22 12:14:09,366 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-22 12:14:10,610 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-22 12:14:10,629 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-22 12:14:11,586 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-22 12:14:12,033 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:14:12 WrapperNode [2018-07-22 12:14:12,034 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-22 12:14:12,036 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-22 12:14:12,036 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-22 12:14:12,036 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-22 12:14:12,048 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:14:12" (1/1) ... [2018-07-22 12:14:12,341 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:14:12" (1/1) ... [2018-07-22 12:14:12,771 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-22 12:14:12,771 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-22 12:14:12,771 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-22 12:14:12,772 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-22 12:14:12,782 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:14:12" (1/1) ... [2018-07-22 12:14:12,782 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:14:12" (1/1) ... [2018-07-22 12:14:12,867 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:14:12" (1/1) ... [2018-07-22 12:14:12,868 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:14:12" (1/1) ... [2018-07-22 12:14:13,040 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:14:12" (1/1) ... [2018-07-22 12:14:14,451 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:14:12" (1/1) ... [2018-07-22 12:14:14,505 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:14:12" (1/1) ... [2018-07-22 12:14:14,556 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-22 12:14:14,557 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-22 12:14:14,557 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-22 12:14:14,557 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-22 12:14:14,558 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:14:12" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-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 [2018-07-22 12:14:14,625 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-07-22 12:14:14,625 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-22 12:14:14,625 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-22 12:14:25,187 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-22 12:14:25,187 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 12:14:25 BoogieIcfgContainer [2018-07-22 12:14:25,211 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-22 12:14:25,212 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-22 12:14:25,212 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-22 12:14:25,215 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-22 12:14:25,215 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 12:14:08" (1/3) ... [2018-07-22 12:14:25,216 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@315ccee1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 12:14:25, skipping insertion in model container [2018-07-22 12:14:25,216 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:14:12" (2/3) ... [2018-07-22 12:14:25,217 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@315ccee1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 12:14:25, skipping insertion in model container [2018-07-22 12:14:25,217 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 12:14:25" (3/3) ... [2018-07-22 12:14:25,220 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label02_true-unreach-call.c [2018-07-22 12:14:25,229 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-22 12:14:25,239 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-22 12:14:25,307 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-22 12:14:25,308 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-22 12:14:25,308 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-22 12:14:25,308 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-22 12:14:25,308 INFO L376 AbstractCegarLoop]: Backedges is TWOTRACK [2018-07-22 12:14:25,308 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-22 12:14:25,308 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-22 12:14:25,309 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-22 12:14:25,309 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-22 12:14:25,350 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states. [2018-07-22 12:14:25,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-07-22 12:14:25,358 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 12:14:25,359 INFO L358 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] [2018-07-22 12:14:25,359 INFO L414 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 12:14:25,363 INFO L82 PathProgramCache]: Analyzing trace with hash 935177138, now seen corresponding path program 1 times [2018-07-22 12:14:25,364 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 12:14:25,365 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 12:14:25,405 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 12:14:25,405 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 12:14:25,406 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 12:14:25,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 12:14:25,936 WARN L169 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-07-22 12:14:26,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-22 12:14:26,317 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 12:14:26,318 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-22 12:14:26,321 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-22 12:14:26,336 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-22 12:14:26,336 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-07-22 12:14:26,339 INFO L87 Difference]: Start difference. First operand 1099 states. Second operand 5 states. [2018-07-22 12:14:40,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 12:14:40,321 INFO L93 Difference]: Finished difference Result 4624 states and 8784 transitions. [2018-07-22 12:14:40,322 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-22 12:14:40,323 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 40 [2018-07-22 12:14:40,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 12:14:40,365 INFO L225 Difference]: With dead ends: 4624 [2018-07-22 12:14:40,365 INFO L226 Difference]: Without dead ends: 3515 [2018-07-22 12:14:40,384 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-07-22 12:14:40,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3515 states. [2018-07-22 12:14:40,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3515 to 3514. [2018-07-22 12:14:40,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3514 states. [2018-07-22 12:14:40,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3514 states to 3514 states and 5233 transitions. [2018-07-22 12:14:40,590 INFO L78 Accepts]: Start accepts. Automaton has 3514 states and 5233 transitions. Word has length 40 [2018-07-22 12:14:40,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 12:14:40,590 INFO L471 AbstractCegarLoop]: Abstraction has 3514 states and 5233 transitions. [2018-07-22 12:14:40,590 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-22 12:14:40,591 INFO L276 IsEmpty]: Start isEmpty. Operand 3514 states and 5233 transitions. [2018-07-22 12:14:40,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2018-07-22 12:14:40,601 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 12:14:40,602 INFO L358 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 12:14:40,605 INFO L414 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 12:14:40,605 INFO L82 PathProgramCache]: Analyzing trace with hash 208041757, now seen corresponding path program 1 times [2018-07-22 12:14:40,605 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 12:14:40,605 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 12:14:40,606 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 12:14:40,607 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 12:14:40,607 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 12:14:40,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 12:14:41,215 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 5 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-22 12:14:41,215 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-22 12:14:41,215 INFO L219 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-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 [2018-07-22 12:14:41,234 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 12:14:41,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 12:14:41,336 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-22 12:14:41,555 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-22 12:14:41,590 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-22 12:14:41,590 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 4 [2018-07-22 12:14:41,591 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-22 12:14:41,592 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-22 12:14:41,592 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-22 12:14:41,592 INFO L87 Difference]: Start difference. First operand 3514 states and 5233 transitions. Second operand 5 states. [2018-07-22 12:15:00,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 12:15:00,214 INFO L93 Difference]: Finished difference Result 12053 states and 19668 transitions. [2018-07-22 12:15:00,215 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-22 12:15:00,215 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 166 [2018-07-22 12:15:00,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 12:15:00,261 INFO L225 Difference]: With dead ends: 12053 [2018-07-22 12:15:00,261 INFO L226 Difference]: Without dead ends: 9329 [2018-07-22 12:15:00,266 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-22 12:15:00,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9329 states. [2018-07-22 12:15:00,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9329 to 9139. [2018-07-22 12:15:00,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9139 states. [2018-07-22 12:15:00,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9139 states to 9139 states and 13690 transitions. [2018-07-22 12:15:00,502 INFO L78 Accepts]: Start accepts. Automaton has 9139 states and 13690 transitions. Word has length 166 [2018-07-22 12:15:00,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 12:15:00,506 INFO L471 AbstractCegarLoop]: Abstraction has 9139 states and 13690 transitions. [2018-07-22 12:15:00,506 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-22 12:15:00,506 INFO L276 IsEmpty]: Start isEmpty. Operand 9139 states and 13690 transitions. [2018-07-22 12:15:00,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2018-07-22 12:15:00,518 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 12:15:00,520 INFO L358 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-22 12:15:00,520 INFO L414 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 12:15:00,520 INFO L82 PathProgramCache]: Analyzing trace with hash 497294896, now seen corresponding path program 1 times [2018-07-22 12:15:00,520 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 12:15:00,521 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 12:15:00,521 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 12:15:00,522 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 12:15:00,522 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 12:15:00,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 12:15:00,911 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 151 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-22 12:15:00,912 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 12:15:00,912 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-22 12:15:00,913 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 12:15:00,914 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 12:15:00,914 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 12:15:00,914 INFO L87 Difference]: Start difference. First operand 9139 states and 13690 transitions. Second operand 4 states. [2018-07-22 12:15:07,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 12:15:07,852 INFO L93 Difference]: Finished difference Result 30141 states and 46749 transitions. [2018-07-22 12:15:07,852 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 12:15:07,853 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 216 [2018-07-22 12:15:07,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 12:15:07,957 INFO L225 Difference]: With dead ends: 30141 [2018-07-22 12:15:07,957 INFO L226 Difference]: Without dead ends: 21792 [2018-07-22 12:15:07,970 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 12:15:07,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21792 states. [2018-07-22 12:15:08,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21792 to 21759. [2018-07-22 12:15:08,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21759 states. [2018-07-22 12:15:08,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21759 states to 21759 states and 30481 transitions. [2018-07-22 12:15:08,464 INFO L78 Accepts]: Start accepts. Automaton has 21759 states and 30481 transitions. Word has length 216 [2018-07-22 12:15:08,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 12:15:08,466 INFO L471 AbstractCegarLoop]: Abstraction has 21759 states and 30481 transitions. [2018-07-22 12:15:08,466 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 12:15:08,466 INFO L276 IsEmpty]: Start isEmpty. Operand 21759 states and 30481 transitions. [2018-07-22 12:15:08,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2018-07-22 12:15:08,471 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 12:15:08,472 INFO L358 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-22 12:15:08,472 INFO L414 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 12:15:08,472 INFO L82 PathProgramCache]: Analyzing trace with hash -55037238, now seen corresponding path program 1 times [2018-07-22 12:15:08,472 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 12:15:08,473 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 12:15:08,474 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 12:15:08,474 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 12:15:08,474 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 12:15:08,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 12:15:08,976 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 160 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-22 12:15:08,977 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 12:15:08,977 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-22 12:15:08,977 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-22 12:15:08,977 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-22 12:15:08,977 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-22 12:15:08,978 INFO L87 Difference]: Start difference. First operand 21759 states and 30481 transitions. Second operand 5 states. [2018-07-22 12:15:25,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 12:15:25,528 INFO L93 Difference]: Finished difference Result 61153 states and 88389 transitions. [2018-07-22 12:15:25,529 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-22 12:15:25,529 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 223 [2018-07-22 12:15:25,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 12:15:25,621 INFO L225 Difference]: With dead ends: 61153 [2018-07-22 12:15:25,621 INFO L226 Difference]: Without dead ends: 40184 [2018-07-22 12:15:25,644 INFO L578 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 [2018-07-22 12:15:25,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40184 states. [2018-07-22 12:15:26,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40184 to 40001. [2018-07-22 12:15:26,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40001 states. [2018-07-22 12:15:26,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40001 states to 40001 states and 55594 transitions. [2018-07-22 12:15:26,301 INFO L78 Accepts]: Start accepts. Automaton has 40001 states and 55594 transitions. Word has length 223 [2018-07-22 12:15:26,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 12:15:26,301 INFO L471 AbstractCegarLoop]: Abstraction has 40001 states and 55594 transitions. [2018-07-22 12:15:26,301 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-22 12:15:26,302 INFO L276 IsEmpty]: Start isEmpty. Operand 40001 states and 55594 transitions. [2018-07-22 12:15:26,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2018-07-22 12:15:26,310 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 12:15:26,310 INFO L358 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-22 12:15:26,310 INFO L414 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 12:15:26,310 INFO L82 PathProgramCache]: Analyzing trace with hash 1837347777, now seen corresponding path program 1 times [2018-07-22 12:15:26,311 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 12:15:26,311 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 12:15:26,311 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 12:15:26,312 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 12:15:26,313 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 12:15:26,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 12:15:27,005 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 75 proven. 65 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2018-07-22 12:15:27,005 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-22 12:15:27,006 INFO L219 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-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 [2018-07-22 12:15:27,015 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 12:15:27,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 12:15:27,130 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-22 12:15:27,308 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2018-07-22 12:15:27,341 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-22 12:15:27,342 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2018-07-22 12:15:27,342 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-22 12:15:27,343 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-22 12:15:27,343 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-22 12:15:27,343 INFO L87 Difference]: Start difference. First operand 40001 states and 55594 transitions. Second operand 5 states. [2018-07-22 12:15:36,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 12:15:36,500 INFO L93 Difference]: Finished difference Result 124121 states and 172091 transitions. [2018-07-22 12:15:36,500 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 12:15:36,500 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 272 [2018-07-22 12:15:36,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 12:15:36,608 INFO L225 Difference]: With dead ends: 124121 [2018-07-22 12:15:36,608 INFO L226 Difference]: Without dead ends: 84910 [2018-07-22 12:15:36,659 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 271 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-22 12:15:36,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84910 states. [2018-07-22 12:15:37,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84910 to 83326. [2018-07-22 12:15:37,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83326 states. [2018-07-22 12:15:37,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83326 states to 83326 states and 104963 transitions. [2018-07-22 12:15:37,890 INFO L78 Accepts]: Start accepts. Automaton has 83326 states and 104963 transitions. Word has length 272 [2018-07-22 12:15:37,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 12:15:37,890 INFO L471 AbstractCegarLoop]: Abstraction has 83326 states and 104963 transitions. [2018-07-22 12:15:37,891 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-22 12:15:37,891 INFO L276 IsEmpty]: Start isEmpty. Operand 83326 states and 104963 transitions. [2018-07-22 12:15:37,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2018-07-22 12:15:37,906 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 12:15:37,907 INFO L358 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, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 12:15:37,907 INFO L414 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 12:15:37,907 INFO L82 PathProgramCache]: Analyzing trace with hash -1872735786, now seen corresponding path program 1 times [2018-07-22 12:15:37,907 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 12:15:37,907 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 12:15:37,908 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 12:15:37,908 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 12:15:37,908 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 12:15:37,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 12:15:38,158 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 295 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2018-07-22 12:15:38,158 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 12:15:38,159 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-22 12:15:38,159 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-22 12:15:38,159 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-22 12:15:38,159 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-22 12:15:38,160 INFO L87 Difference]: Start difference. First operand 83326 states and 104963 transitions. Second operand 3 states. [2018-07-22 12:15:44,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 12:15:44,774 INFO L93 Difference]: Finished difference Result 167417 states and 211005 transitions. [2018-07-22 12:15:44,774 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-22 12:15:44,774 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 320 [2018-07-22 12:15:44,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 12:15:44,859 INFO L225 Difference]: With dead ends: 167417 [2018-07-22 12:15:44,859 INFO L226 Difference]: Without dead ends: 84881 [2018-07-22 12:15:44,901 INFO L578 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 [2018-07-22 12:15:44,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84881 states. [2018-07-22 12:15:45,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84881 to 83299. [2018-07-22 12:15:45,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83299 states. [2018-07-22 12:15:45,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83299 states to 83299 states and 97720 transitions. [2018-07-22 12:15:45,992 INFO L78 Accepts]: Start accepts. Automaton has 83299 states and 97720 transitions. Word has length 320 [2018-07-22 12:15:45,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 12:15:45,992 INFO L471 AbstractCegarLoop]: Abstraction has 83299 states and 97720 transitions. [2018-07-22 12:15:45,992 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-22 12:15:45,992 INFO L276 IsEmpty]: Start isEmpty. Operand 83299 states and 97720 transitions. [2018-07-22 12:15:46,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2018-07-22 12:15:46,006 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 12:15:46,007 INFO L358 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 12:15:46,007 INFO L414 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 12:15:46,007 INFO L82 PathProgramCache]: Analyzing trace with hash -538558688, now seen corresponding path program 1 times [2018-07-22 12:15:46,007 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 12:15:46,007 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 12:15:46,008 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 12:15:46,008 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 12:15:46,008 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 12:15:46,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 12:15:46,534 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2018-07-22 12:15:46,535 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 12:15:46,535 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-22 12:15:46,535 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 12:15:46,535 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 12:15:46,536 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 12:15:46,536 INFO L87 Difference]: Start difference. First operand 83299 states and 97720 transitions. Second operand 4 states. [2018-07-22 12:15:58,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 12:15:58,823 INFO L93 Difference]: Finished difference Result 210768 states and 249193 transitions. [2018-07-22 12:15:58,825 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 12:15:58,825 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 339 [2018-07-22 12:15:58,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 12:15:58,998 INFO L225 Difference]: With dead ends: 210768 [2018-07-22 12:15:58,998 INFO L226 Difference]: Without dead ends: 128259 [2018-07-22 12:15:59,032 INFO L578 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 [2018-07-22 12:15:59,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128259 states. [2018-07-22 12:15:59,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128259 to 126636. [2018-07-22 12:15:59,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126636 states. [2018-07-22 12:16:00,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126636 states to 126636 states and 145519 transitions. [2018-07-22 12:16:00,064 INFO L78 Accepts]: Start accepts. Automaton has 126636 states and 145519 transitions. Word has length 339 [2018-07-22 12:16:00,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 12:16:00,065 INFO L471 AbstractCegarLoop]: Abstraction has 126636 states and 145519 transitions. [2018-07-22 12:16:00,065 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 12:16:00,065 INFO L276 IsEmpty]: Start isEmpty. Operand 126636 states and 145519 transitions. [2018-07-22 12:16:00,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2018-07-22 12:16:00,101 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 12:16:00,101 INFO L358 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 12:16:00,101 INFO L414 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 12:16:00,102 INFO L82 PathProgramCache]: Analyzing trace with hash -1458212415, now seen corresponding path program 1 times [2018-07-22 12:16:00,102 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 12:16:00,102 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 12:16:00,103 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 12:16:00,104 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 12:16:00,104 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 12:16:00,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 12:16:04,099 INFO L134 CoverageAnalysis]: Checked inductivity of 611 backedges. 382 proven. 84 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2018-07-22 12:16:04,099 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-22 12:16:04,099 INFO L219 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-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 [2018-07-22 12:16:04,109 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 12:16:04,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 12:16:04,242 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-22 12:16:04,530 INFO L134 CoverageAnalysis]: Checked inductivity of 611 backedges. 466 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2018-07-22 12:16:04,550 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-22 12:16:04,550 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2018-07-22 12:16:04,551 INFO L450 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-22 12:16:04,551 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-22 12:16:04,551 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-07-22 12:16:04,551 INFO L87 Difference]: Start difference. First operand 126636 states and 145519 transitions. Second operand 7 states. [2018-07-22 12:16:29,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 12:16:29,518 INFO L93 Difference]: Finished difference Result 504124 states and 578365 transitions. [2018-07-22 12:16:29,518 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-07-22 12:16:29,518 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 408 [2018-07-22 12:16:29,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 12:16:29,866 INFO L225 Difference]: With dead ends: 504124 [2018-07-22 12:16:29,867 INFO L226 Difference]: Without dead ends: 361691 [2018-07-22 12:16:29,918 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 419 GetRequests, 406 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2018-07-22 12:16:30,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361691 states. [2018-07-22 12:16:32,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361691 to 345074. [2018-07-22 12:16:32,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 345074 states. [2018-07-22 12:16:40,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345074 states to 345074 states and 377015 transitions. [2018-07-22 12:16:40,502 INFO L78 Accepts]: Start accepts. Automaton has 345074 states and 377015 transitions. Word has length 408 [2018-07-22 12:16:40,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 12:16:40,502 INFO L471 AbstractCegarLoop]: Abstraction has 345074 states and 377015 transitions. [2018-07-22 12:16:40,502 INFO L472 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-22 12:16:40,502 INFO L276 IsEmpty]: Start isEmpty. Operand 345074 states and 377015 transitions. [2018-07-22 12:16:40,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 513 [2018-07-22 12:16:40,540 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 12:16:40,540 INFO L358 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, 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, 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] [2018-07-22 12:16:40,540 INFO L414 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 12:16:40,541 INFO L82 PathProgramCache]: Analyzing trace with hash 50471356, now seen corresponding path program 1 times [2018-07-22 12:16:40,541 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 12:16:40,541 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 12:16:40,541 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 12:16:40,541 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 12:16:40,541 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 12:16:40,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 12:16:41,064 INFO L134 CoverageAnalysis]: Checked inductivity of 983 backedges. 750 proven. 0 refuted. 0 times theorem prover too weak. 233 trivial. 0 not checked. [2018-07-22 12:16:41,064 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 12:16:41,064 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-22 12:16:41,065 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 12:16:41,065 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 12:16:41,065 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 12:16:41,065 INFO L87 Difference]: Start difference. First operand 345074 states and 377015 transitions. Second operand 4 states. [2018-07-22 12:16:51,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 12:16:51,799 INFO L93 Difference]: Finished difference Result 688598 states and 752307 transitions. [2018-07-22 12:16:51,799 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 12:16:51,799 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 512 [2018-07-22 12:16:51,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 12:16:52,159 INFO L225 Difference]: With dead ends: 688598 [2018-07-22 12:16:52,159 INFO L226 Difference]: Without dead ends: 336412 [2018-07-22 12:16:52,274 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 12:16:52,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336412 states. [2018-07-22 12:16:57,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336412 to 333224. [2018-07-22 12:16:57,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 333224 states. [2018-07-22 12:16:58,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333224 states to 333224 states and 356578 transitions. [2018-07-22 12:16:58,238 INFO L78 Accepts]: Start accepts. Automaton has 333224 states and 356578 transitions. Word has length 512 [2018-07-22 12:16:58,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 12:16:58,239 INFO L471 AbstractCegarLoop]: Abstraction has 333224 states and 356578 transitions. [2018-07-22 12:16:58,239 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 12:16:58,239 INFO L276 IsEmpty]: Start isEmpty. Operand 333224 states and 356578 transitions. [2018-07-22 12:16:58,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 555 [2018-07-22 12:16:58,265 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 12:16:58,265 INFO L358 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 12:16:58,266 INFO L414 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 12:16:58,266 INFO L82 PathProgramCache]: Analyzing trace with hash 895565423, now seen corresponding path program 1 times [2018-07-22 12:16:58,266 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 12:16:58,266 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 12:16:58,267 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 12:16:58,267 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 12:16:58,267 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 12:16:58,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 12:17:05,223 INFO L134 CoverageAnalysis]: Checked inductivity of 1062 backedges. 574 proven. 4 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2018-07-22 12:17:05,224 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-22 12:17:05,224 INFO L219 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-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 [2018-07-22 12:17:05,230 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 12:17:05,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 12:17:05,354 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-22 12:17:05,520 INFO L134 CoverageAnalysis]: Checked inductivity of 1062 backedges. 645 proven. 0 refuted. 0 times theorem prover too weak. 417 trivial. 0 not checked. [2018-07-22 12:17:05,552 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-22 12:17:05,552 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-07-22 12:17:05,553 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 12:17:05,553 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 12:17:05,553 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 12:17:05,554 INFO L87 Difference]: Start difference. First operand 333224 states and 356578 transitions. Second operand 4 states. [2018-07-22 12:17:14,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 12:17:14,638 INFO L93 Difference]: Finished difference Result 819412 states and 876029 transitions. [2018-07-22 12:17:14,638 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 12:17:14,638 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 554 [2018-07-22 12:17:14,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 12:17:15,085 INFO L225 Difference]: With dead ends: 819412 [2018-07-22 12:17:15,085 INFO L226 Difference]: Without dead ends: 420638 [2018-07-22 12:17:15,158 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 556 GetRequests, 554 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 12:17:15,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420638 states. [2018-07-22 12:17:24,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420638 to 314191. [2018-07-22 12:17:24,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 314191 states. [2018-07-22 12:17:24,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314191 states to 314191 states and 332971 transitions. [2018-07-22 12:17:24,633 INFO L78 Accepts]: Start accepts. Automaton has 314191 states and 332971 transitions. Word has length 554 [2018-07-22 12:17:24,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 12:17:24,634 INFO L471 AbstractCegarLoop]: Abstraction has 314191 states and 332971 transitions. [2018-07-22 12:17:24,634 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 12:17:24,634 INFO L276 IsEmpty]: Start isEmpty. Operand 314191 states and 332971 transitions. [2018-07-22 12:17:24,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 623 [2018-07-22 12:17:24,654 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 12:17:24,654 INFO L358 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2018-07-22 12:17:24,655 INFO L414 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 12:17:24,655 INFO L82 PathProgramCache]: Analyzing trace with hash -727406687, now seen corresponding path program 1 times [2018-07-22 12:17:24,655 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 12:17:24,655 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 12:17:24,656 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 12:17:24,656 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 12:17:24,656 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 12:17:24,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 12:17:25,218 WARN L169 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 8 [2018-07-22 12:17:26,076 INFO L134 CoverageAnalysis]: Checked inductivity of 1238 backedges. 768 proven. 65 refuted. 0 times theorem prover too weak. 405 trivial. 0 not checked. [2018-07-22 12:17:26,077 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-22 12:17:26,077 INFO L219 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-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 [2018-07-22 12:17:26,083 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 12:17:26,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 12:17:26,249 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-22 12:17:26,716 INFO L134 CoverageAnalysis]: Checked inductivity of 1238 backedges. 634 proven. 0 refuted. 0 times theorem prover too weak. 604 trivial. 0 not checked. [2018-07-22 12:17:26,737 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-22 12:17:26,738 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2018-07-22 12:17:26,738 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-22 12:17:26,739 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-22 12:17:26,739 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-07-22 12:17:26,739 INFO L87 Difference]: Start difference. First operand 314191 states and 332971 transitions. Second operand 6 states. Received shutdown request... [2018-07-22 12:17:39,996 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-22 12:17:39,997 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-22 12:17:40,001 WARN L202 ceAbstractionStarter]: Timeout [2018-07-22 12:17:40,002 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.07 12:17:40 BoogieIcfgContainer [2018-07-22 12:17:40,002 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-22 12:17:40,002 INFO L168 Benchmark]: Toolchain (without parser) took 211068.47 ms. Allocated memory was 309.9 MB in the beginning and 3.0 GB in the end (delta: 2.7 GB). Free memory was 239.4 MB in the beginning and 2.2 GB in the end (delta: -1.9 GB). Peak memory consumption was 703.0 MB. Max. memory is 5.3 GB. [2018-07-22 12:17:40,003 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 309.9 MB. Free memory is still 274.3 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-07-22 12:17:40,004 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3091.00 ms. Allocated memory was 309.9 MB in the beginning and 374.9 MB in the end (delta: 65.0 MB). Free memory was 237.4 MB in the beginning and 177.9 MB in the end (delta: 59.5 MB). Peak memory consumption was 124.5 MB. Max. memory is 5.3 GB. [2018-07-22 12:17:40,004 INFO L168 Benchmark]: Boogie Procedure Inliner took 735.34 ms. Allocated memory was 374.9 MB in the beginning and 393.7 MB in the end (delta: 18.9 MB). Free memory was 177.9 MB in the beginning and 181.3 MB in the end (delta: -3.3 MB). Peak memory consumption was 76.6 MB. Max. memory is 5.3 GB. [2018-07-22 12:17:40,005 INFO L168 Benchmark]: Boogie Preprocessor took 1785.19 ms. Allocated memory was 393.7 MB in the beginning and 724.6 MB in the end (delta: 330.8 MB). Free memory was 181.3 MB in the beginning and 540.3 MB in the end (delta: -359.1 MB). Peak memory consumption was 125.8 MB. Max. memory is 5.3 GB. [2018-07-22 12:17:40,006 INFO L168 Benchmark]: RCFGBuilder took 10654.24 ms. Allocated memory was 724.6 MB in the beginning and 965.7 MB in the end (delta: 241.2 MB). Free memory was 540.3 MB in the beginning and 540.1 MB in the end (delta: 185.6 kB). Peak memory consumption was 299.4 MB. Max. memory is 5.3 GB. [2018-07-22 12:17:40,007 INFO L168 Benchmark]: TraceAbstraction took 194789.91 ms. Allocated memory was 965.7 MB in the beginning and 3.0 GB in the end (delta: 2.0 GB). Free memory was 540.1 MB in the beginning and 2.2 GB in the end (delta: -1.6 GB). Peak memory consumption was 347.8 MB. Max. memory is 5.3 GB. [2018-07-22 12:17:40,012 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 309.9 MB. Free memory is still 274.3 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 3091.00 ms. Allocated memory was 309.9 MB in the beginning and 374.9 MB in the end (delta: 65.0 MB). Free memory was 237.4 MB in the beginning and 177.9 MB in the end (delta: 59.5 MB). Peak memory consumption was 124.5 MB. Max. memory is 5.3 GB. * Boogie Procedure Inliner took 735.34 ms. Allocated memory was 374.9 MB in the beginning and 393.7 MB in the end (delta: 18.9 MB). Free memory was 177.9 MB in the beginning and 181.3 MB in the end (delta: -3.3 MB). Peak memory consumption was 76.6 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 1785.19 ms. Allocated memory was 393.7 MB in the beginning and 724.6 MB in the end (delta: 330.8 MB). Free memory was 181.3 MB in the beginning and 540.3 MB in the end (delta: -359.1 MB). Peak memory consumption was 125.8 MB. Max. memory is 5.3 GB. * RCFGBuilder took 10654.24 ms. Allocated memory was 724.6 MB in the beginning and 965.7 MB in the end (delta: 241.2 MB). Free memory was 540.3 MB in the beginning and 540.1 MB in the end (delta: 185.6 kB). Peak memory consumption was 299.4 MB. Max. memory is 5.3 GB. * TraceAbstraction took 194789.91 ms. Allocated memory was 965.7 MB in the beginning and 3.0 GB in the end (delta: 2.0 GB). Free memory was 540.1 MB in the beginning and 2.2 GB in the end (delta: -1.6 GB). Peak memory consumption was 347.8 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 129]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 129). Cancelled while BasicCegarLoop was constructing difference of abstraction (314191states) and interpolant automaton (currently 11 states, 6 states before enhancement), while ReachableStatesComputation was computing reachable states (231473 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1099 locations, 1 error locations. TIMEOUT Result, 194.7s OverallTime, 11 OverallIterations, 6 TraceHistogramMax, 144.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 9425 SDtfs, 42703 SDslu, 3703 SDs, 0 SdLazy, 73308 SolverSat, 19676 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 113.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2083 GetRequests, 2033 SyntacticMatches, 6 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 3.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=345074occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 30.9s AutomataMinimizationTime, 10 MinimizatonAttempts, 131448 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 12.3s InterpolantComputationTime, 5694 NumberOfCodeBlocks, 5694 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 5678 ConstructedInterpolants, 0 QuantifiedInterpolants, 5203137 SizeOfPredicates, 5 NumberOfNonLiveVariables, 2715 ConjunctsInSsa, 13 ConjunctsInUnsatCore, 16 InterpolantComputations, 11 PerfectInterpolantSequences, 8000/8250 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/Problem13_label02_true-unreach-call.c_svcomp-Reach-64bit-Automizer_Default.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-22_12-17-40-025.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/Problem13_label02_true-unreach-call.c_svcomp-Reach-64bit-Automizer_Default.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-22_12-17-40-025.csv Completed graceful shutdown