java -Xmx8000000000 -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 csv -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label53_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-24 02:55:51,169 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-24 02:55:51,171 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-24 02:55:51,185 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-24 02:55:51,185 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-24 02:55:51,187 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-24 02:55:51,189 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-24 02:55:51,190 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-24 02:55:51,192 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-24 02:55:51,193 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-24 02:55:51,194 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-24 02:55:51,194 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-24 02:55:51,195 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-24 02:55:51,196 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-24 02:55:51,197 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-24 02:55:51,198 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-24 02:55:51,199 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-24 02:55:51,201 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-24 02:55:51,203 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-24 02:55:51,204 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-24 02:55:51,205 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-24 02:55:51,206 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-24 02:55:51,209 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-24 02:55:51,209 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-24 02:55:51,209 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-24 02:55:51,210 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-24 02:55:51,211 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-24 02:55:51,212 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-24 02:55:51,213 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-24 02:55:51,214 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-24 02:55:51,214 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-24 02:55:51,215 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-24 02:55:51,215 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-24 02:55:51,216 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-24 02:55:51,217 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-24 02:55:51,217 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-24 02:55:51,218 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-07-24 02:55:51,242 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-24 02:55:51,243 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-24 02:55:51,244 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-24 02:55:51,244 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-07-24 02:55:51,245 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-07-24 02:55:51,245 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-07-24 02:55:51,246 INFO L133 SettingsManager]: * Use SBE=true [2018-07-24 02:55:51,246 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-24 02:55:51,247 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-24 02:55:51,247 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-24 02:55:51,247 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-24 02:55:51,247 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-24 02:55:51,248 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-24 02:55:51,248 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-24 02:55:51,248 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-24 02:55:51,249 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-24 02:55:51,249 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-24 02:55:51,249 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-24 02:55:51,249 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-24 02:55:51,250 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 02:55:51,251 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-24 02:55:51,251 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-24 02:55:51,251 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-24 02:55:51,251 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-07-24 02:55:51,251 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-24 02:55:51,252 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-24 02:55:51,252 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-24 02:55:51,252 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-24 02:55:51,301 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-24 02:55:51,313 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-24 02:55:51,316 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-24 02:55:51,317 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-24 02:55:51,318 INFO L276 PluginConnector]: CDTParser initialized [2018-07-24 02:55:51,319 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label53_true-unreach-call.c [2018-07-24 02:55:51,667 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae32f0bc9/e73ba48f4ed547c1aba63fdfac6155f5/FLAG185ecf0b0 [2018-07-24 02:55:52,154 INFO L276 CDTParser]: Found 1 translation units. [2018-07-24 02:55:52,155 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label53_true-unreach-call.c [2018-07-24 02:55:52,203 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae32f0bc9/e73ba48f4ed547c1aba63fdfac6155f5/FLAG185ecf0b0 [2018-07-24 02:55:52,223 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae32f0bc9/e73ba48f4ed547c1aba63fdfac6155f5 [2018-07-24 02:55:52,235 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-24 02:55:52,237 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-24 02:55:52,239 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-24 02:55:52,239 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-24 02:55:52,248 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-24 02:55:52,249 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 02:55:52" (1/1) ... [2018-07-24 02:55:52,252 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@654bd90d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:55:52, skipping insertion in model container [2018-07-24 02:55:52,253 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 02:55:52" (1/1) ... [2018-07-24 02:55:52,652 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-24 02:55:53,956 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 02:55:53,975 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-24 02:55:54,858 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 02:55:55,312 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:55:55 WrapperNode [2018-07-24 02:55:55,313 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-24 02:55:55,314 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-24 02:55:55,314 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-24 02:55:55,314 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-24 02:55:55,325 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:55:55" (1/1) ... [2018-07-24 02:55:55,445 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:55:55" (1/1) ... [2018-07-24 02:55:56,090 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-24 02:55:56,091 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-24 02:55:56,091 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-24 02:55:56,091 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-24 02:55:57,232 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:55:55" (1/1) ... [2018-07-24 02:55:57,232 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:55:55" (1/1) ... [2018-07-24 02:55:57,295 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:55:55" (1/1) ... [2018-07-24 02:55:57,296 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:55:55" (1/1) ... [2018-07-24 02:55:57,480 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:55:55" (1/1) ... [2018-07-24 02:55:57,532 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:55:55" (1/1) ... [2018-07-24 02:55:57,598 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:55:55" (1/1) ... [2018-07-24 02:55:57,660 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-24 02:55:57,660 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-24 02:55:57,660 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-24 02:55:57,661 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-24 02:55:57,663 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:55:55" (1/1) ... No working directory specified, using /storage/repos/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 [2018-07-24 02:55:57,733 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-07-24 02:55:57,733 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-24 02:55:57,733 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-24 02:56:11,663 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-24 02:56:11,664 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 02:56:11 BoogieIcfgContainer [2018-07-24 02:56:11,664 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-24 02:56:11,665 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-24 02:56:11,665 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-24 02:56:11,669 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-24 02:56:11,669 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.07 02:55:52" (1/3) ... [2018-07-24 02:56:11,670 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12793355 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 02:56:11, skipping insertion in model container [2018-07-24 02:56:11,670 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:55:55" (2/3) ... [2018-07-24 02:56:11,671 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12793355 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 02:56:11, skipping insertion in model container [2018-07-24 02:56:11,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 02:56:11" (3/3) ... [2018-07-24 02:56:11,673 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label53_true-unreach-call.c [2018-07-24 02:56:11,682 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-24 02:56:11,691 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-24 02:56:11,756 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-24 02:56:11,757 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-24 02:56:11,757 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-24 02:56:11,757 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-24 02:56:11,757 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-24 02:56:11,758 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-24 02:56:11,758 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-24 02:56:11,758 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-24 02:56:11,758 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-24 02:56:11,796 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states. [2018-07-24 02:56:11,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-07-24 02:56:11,804 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 02:56:11,805 INFO L353 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] [2018-07-24 02:56:11,806 INFO L414 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 02:56:11,811 INFO L82 PathProgramCache]: Analyzing trace with hash 18549650, now seen corresponding path program 1 times [2018-07-24 02:56:11,814 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 02:56:11,814 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 02:56:11,863 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 02:56:11,864 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 02:56:11,864 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 02:56:11,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 02:56:12,238 WARN L169 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 7 DAG size of output: 4 [2018-07-24 02:56:12,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 02:56:12,250 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 02:56:12,250 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 02:56:12,255 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 02:56:12,270 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 02:56:12,271 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 02:56:12,274 INFO L87 Difference]: Start difference. First operand 1099 states. Second operand 4 states. [2018-07-24 02:56:27,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 02:56:27,587 INFO L93 Difference]: Finished difference Result 3870 states and 7276 transitions. [2018-07-24 02:56:27,587 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 02:56:27,589 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2018-07-24 02:56:27,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 02:56:27,633 INFO L225 Difference]: With dead ends: 3870 [2018-07-24 02:56:27,633 INFO L226 Difference]: Without dead ends: 2764 [2018-07-24 02:56:27,643 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 02:56:27,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2764 states. [2018-07-24 02:56:27,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2764 to 2736. [2018-07-24 02:56:27,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2736 states. [2018-07-24 02:56:27,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2736 states to 2736 states and 4487 transitions. [2018-07-24 02:56:27,827 INFO L78 Accepts]: Start accepts. Automaton has 2736 states and 4487 transitions. Word has length 32 [2018-07-24 02:56:27,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 02:56:27,827 INFO L471 AbstractCegarLoop]: Abstraction has 2736 states and 4487 transitions. [2018-07-24 02:56:27,828 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 02:56:27,828 INFO L276 IsEmpty]: Start isEmpty. Operand 2736 states and 4487 transitions. [2018-07-24 02:56:27,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-07-24 02:56:27,835 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 02:56:27,836 INFO L353 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 02:56:27,836 INFO L414 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 02:56:27,836 INFO L82 PathProgramCache]: Analyzing trace with hash 1646971510, now seen corresponding path program 1 times [2018-07-24 02:56:27,837 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 02:56:27,837 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 02:56:27,838 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 02:56:27,838 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 02:56:27,838 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 02:56:27,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 02:56:29,112 WARN L169 SmtUtils]: Spent 752.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 28 [2018-07-24 02:56:29,211 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 02:56:29,212 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 02:56:29,212 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 02:56:29,214 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 02:56:29,215 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 02:56:29,215 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-07-24 02:56:29,215 INFO L87 Difference]: Start difference. First operand 2736 states and 4487 transitions. Second operand 5 states. [2018-07-24 02:56:47,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 02:56:47,431 INFO L93 Difference]: Finished difference Result 9428 states and 14930 transitions. [2018-07-24 02:56:47,432 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-24 02:56:47,432 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 138 [2018-07-24 02:56:47,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 02:56:47,463 INFO L225 Difference]: With dead ends: 9428 [2018-07-24 02:56:47,464 INFO L226 Difference]: Without dead ends: 6694 [2018-07-24 02:56:47,468 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-07-24 02:56:47,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6694 states. [2018-07-24 02:56:47,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6694 to 6693. [2018-07-24 02:56:47,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6693 states. [2018-07-24 02:56:47,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6693 states to 6693 states and 9417 transitions. [2018-07-24 02:56:47,586 INFO L78 Accepts]: Start accepts. Automaton has 6693 states and 9417 transitions. Word has length 138 [2018-07-24 02:56:47,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 02:56:47,587 INFO L471 AbstractCegarLoop]: Abstraction has 6693 states and 9417 transitions. [2018-07-24 02:56:47,587 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 02:56:47,587 INFO L276 IsEmpty]: Start isEmpty. Operand 6693 states and 9417 transitions. [2018-07-24 02:56:47,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2018-07-24 02:56:47,594 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 02:56:47,594 INFO L353 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 02:56:47,594 INFO L414 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 02:56:47,594 INFO L82 PathProgramCache]: Analyzing trace with hash 586468368, now seen corresponding path program 1 times [2018-07-24 02:56:47,595 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 02:56:47,595 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 02:56:47,596 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 02:56:47,596 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 02:56:47,596 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 02:56:47,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 02:56:48,076 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 135 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 02:56:48,076 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 02:56:48,077 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 02:56:48,077 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 02:56:48,077 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 02:56:48,078 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 02:56:48,078 INFO L87 Difference]: Start difference. First operand 6693 states and 9417 transitions. Second operand 4 states. [2018-07-24 02:56:58,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 02:56:58,884 INFO L93 Difference]: Finished difference Result 15792 states and 23310 transitions. [2018-07-24 02:56:58,885 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 02:56:58,885 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 208 [2018-07-24 02:56:58,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 02:56:58,932 INFO L225 Difference]: With dead ends: 15792 [2018-07-24 02:56:58,933 INFO L226 Difference]: Without dead ends: 9889 [2018-07-24 02:56:58,943 INFO L573 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 [2018-07-24 02:56:58,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9889 states. [2018-07-24 02:56:59,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9889 to 9863. [2018-07-24 02:56:59,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9863 states. [2018-07-24 02:56:59,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9863 states to 9863 states and 13541 transitions. [2018-07-24 02:56:59,108 INFO L78 Accepts]: Start accepts. Automaton has 9863 states and 13541 transitions. Word has length 208 [2018-07-24 02:56:59,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 02:56:59,109 INFO L471 AbstractCegarLoop]: Abstraction has 9863 states and 13541 transitions. [2018-07-24 02:56:59,109 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 02:56:59,109 INFO L276 IsEmpty]: Start isEmpty. Operand 9863 states and 13541 transitions. [2018-07-24 02:56:59,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2018-07-24 02:56:59,113 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 02:56:59,113 INFO L353 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 02:56:59,114 INFO L414 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 02:56:59,114 INFO L82 PathProgramCache]: Analyzing trace with hash 156908202, now seen corresponding path program 1 times [2018-07-24 02:56:59,114 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 02:56:59,114 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 02:56:59,115 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 02:56:59,115 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 02:56:59,116 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 02:56:59,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 02:56:59,451 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 59 proven. 4 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2018-07-24 02:56:59,452 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 02:56:59,452 INFO L221 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/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 [2018-07-24 02:56:59,472 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 02:56:59,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 02:56:59,578 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 02:56:59,672 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 02:56:59,705 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-24 02:56:59,706 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-07-24 02:56:59,707 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 02:56:59,707 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 02:56:59,707 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 02:56:59,708 INFO L87 Difference]: Start difference. First operand 9863 states and 13541 transitions. Second operand 4 states. [2018-07-24 02:57:14,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 02:57:14,199 INFO L93 Difference]: Finished difference Result 35532 states and 49922 transitions. [2018-07-24 02:57:14,199 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 02:57:14,199 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 215 [2018-07-24 02:57:14,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 02:57:14,275 INFO L225 Difference]: With dead ends: 35532 [2018-07-24 02:57:14,275 INFO L226 Difference]: Without dead ends: 26459 [2018-07-24 02:57:14,290 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 02:57:14,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26459 states. [2018-07-24 02:57:14,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26459 to 17748. [2018-07-24 02:57:14,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17748 states. [2018-07-24 02:57:14,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17748 states to 17748 states and 23906 transitions. [2018-07-24 02:57:14,642 INFO L78 Accepts]: Start accepts. Automaton has 17748 states and 23906 transitions. Word has length 215 [2018-07-24 02:57:14,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 02:57:14,643 INFO L471 AbstractCegarLoop]: Abstraction has 17748 states and 23906 transitions. [2018-07-24 02:57:14,643 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 02:57:14,643 INFO L276 IsEmpty]: Start isEmpty. Operand 17748 states and 23906 transitions. [2018-07-24 02:57:14,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2018-07-24 02:57:14,648 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 02:57:14,648 INFO L353 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 02:57:14,648 INFO L414 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 02:57:14,649 INFO L82 PathProgramCache]: Analyzing trace with hash -1147720627, now seen corresponding path program 1 times [2018-07-24 02:57:14,649 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 02:57:14,649 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 02:57:14,650 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 02:57:14,650 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 02:57:14,650 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 02:57:14,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 02:57:15,029 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 59 proven. 4 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2018-07-24 02:57:15,030 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 02:57:15,030 INFO L221 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/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 [2018-07-24 02:57:15,045 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 02:57:15,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 02:57:15,150 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 02:57:15,209 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 155 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 02:57:15,248 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-24 02:57:15,248 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-07-24 02:57:15,249 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 02:57:15,249 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 02:57:15,249 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 02:57:15,250 INFO L87 Difference]: Start difference. First operand 17748 states and 23906 transitions. Second operand 4 states. [2018-07-24 02:57:30,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 02:57:30,215 INFO L93 Difference]: Finished difference Result 59961 states and 81479 transitions. [2018-07-24 02:57:30,215 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 02:57:30,216 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 238 [2018-07-24 02:57:30,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 02:57:30,312 INFO L225 Difference]: With dead ends: 59961 [2018-07-24 02:57:30,313 INFO L226 Difference]: Without dead ends: 43003 [2018-07-24 02:57:30,344 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 02:57:30,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43003 states. [2018-07-24 02:57:31,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43003 to 33504. [2018-07-24 02:57:31,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33504 states. [2018-07-24 02:57:31,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33504 states to 33504 states and 42189 transitions. [2018-07-24 02:57:31,155 INFO L78 Accepts]: Start accepts. Automaton has 33504 states and 42189 transitions. Word has length 238 [2018-07-24 02:57:31,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 02:57:31,156 INFO L471 AbstractCegarLoop]: Abstraction has 33504 states and 42189 transitions. [2018-07-24 02:57:31,156 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 02:57:31,156 INFO L276 IsEmpty]: Start isEmpty. Operand 33504 states and 42189 transitions. [2018-07-24 02:57:31,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2018-07-24 02:57:31,162 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 02:57:31,162 INFO L353 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 02:57:31,163 INFO L414 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 02:57:31,163 INFO L82 PathProgramCache]: Analyzing trace with hash 701027233, now seen corresponding path program 1 times [2018-07-24 02:57:31,163 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 02:57:31,163 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 02:57:31,164 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 02:57:31,164 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 02:57:31,164 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 02:57:31,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 02:57:31,441 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2018-07-24 02:57:31,441 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 02:57:31,442 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-07-24 02:57:31,442 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 02:57:31,442 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 02:57:31,443 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 02:57:31,443 INFO L87 Difference]: Start difference. First operand 33504 states and 42189 transitions. Second operand 3 states. [2018-07-24 02:57:38,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 02:57:38,341 INFO L93 Difference]: Finished difference Result 97733 states and 123651 transitions. [2018-07-24 02:57:38,341 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 02:57:38,341 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 264 [2018-07-24 02:57:38,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 02:57:38,445 INFO L225 Difference]: With dead ends: 97733 [2018-07-24 02:57:38,446 INFO L226 Difference]: Without dead ends: 65019 [2018-07-24 02:57:38,495 INFO L573 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 [2018-07-24 02:57:38,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65019 states. [2018-07-24 02:57:39,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65019 to 65018. [2018-07-24 02:57:39,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65018 states. [2018-07-24 02:57:39,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65018 states to 65018 states and 77299 transitions. [2018-07-24 02:57:39,217 INFO L78 Accepts]: Start accepts. Automaton has 65018 states and 77299 transitions. Word has length 264 [2018-07-24 02:57:39,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 02:57:39,217 INFO L471 AbstractCegarLoop]: Abstraction has 65018 states and 77299 transitions. [2018-07-24 02:57:39,217 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 02:57:39,218 INFO L276 IsEmpty]: Start isEmpty. Operand 65018 states and 77299 transitions. [2018-07-24 02:57:39,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2018-07-24 02:57:39,229 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 02:57:39,229 INFO L353 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 02:57:39,229 INFO L414 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 02:57:39,230 INFO L82 PathProgramCache]: Analyzing trace with hash -127900862, now seen corresponding path program 1 times [2018-07-24 02:57:39,230 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 02:57:39,230 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 02:57:39,231 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 02:57:39,231 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 02:57:39,231 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 02:57:39,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 02:57:39,613 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 344 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2018-07-24 02:57:39,613 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 02:57:39,613 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 02:57:39,614 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 02:57:39,614 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 02:57:39,614 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 02:57:39,615 INFO L87 Difference]: Start difference. First operand 65018 states and 77299 transitions. Second operand 4 states. [2018-07-24 02:57:48,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 02:57:48,510 INFO L93 Difference]: Finished difference Result 139488 states and 165208 transitions. [2018-07-24 02:57:48,510 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 02:57:48,511 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 361 [2018-07-24 02:57:48,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 02:57:48,591 INFO L225 Difference]: With dead ends: 139488 [2018-07-24 02:57:48,591 INFO L226 Difference]: Without dead ends: 67327 [2018-07-24 02:57:48,632 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 02:57:48,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67327 states. [2018-07-24 02:57:49,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67327 to 58658. [2018-07-24 02:57:49,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58658 states. [2018-07-24 02:57:49,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58658 states to 58658 states and 68166 transitions. [2018-07-24 02:57:49,221 INFO L78 Accepts]: Start accepts. Automaton has 58658 states and 68166 transitions. Word has length 361 [2018-07-24 02:57:49,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 02:57:49,221 INFO L471 AbstractCegarLoop]: Abstraction has 58658 states and 68166 transitions. [2018-07-24 02:57:49,221 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 02:57:49,221 INFO L276 IsEmpty]: Start isEmpty. Operand 58658 states and 68166 transitions. [2018-07-24 02:57:49,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2018-07-24 02:57:49,233 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 02:57:49,234 INFO L353 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 02:57:49,234 INFO L414 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 02:57:49,234 INFO L82 PathProgramCache]: Analyzing trace with hash 1233933087, now seen corresponding path program 1 times [2018-07-24 02:57:49,234 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 02:57:49,234 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 02:57:49,235 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 02:57:49,235 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 02:57:49,235 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 02:57:49,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 02:57:49,586 INFO L134 CoverageAnalysis]: Checked inductivity of 655 backedges. 509 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2018-07-24 02:57:49,586 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 02:57:49,586 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 02:57:49,587 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 02:57:49,587 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 02:57:49,587 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-24 02:57:49,588 INFO L87 Difference]: Start difference. First operand 58658 states and 68166 transitions. Second operand 5 states. [2018-07-24 02:58:09,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 02:58:09,689 INFO L93 Difference]: Finished difference Result 231849 states and 269453 transitions. [2018-07-24 02:58:09,690 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-24 02:58:09,690 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 409 [2018-07-24 02:58:09,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 02:58:09,889 INFO L225 Difference]: With dead ends: 231849 [2018-07-24 02:58:09,889 INFO L226 Difference]: Without dead ends: 170821 [2018-07-24 02:58:09,945 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-24 02:58:10,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170821 states. [2018-07-24 02:58:11,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170821 to 164341. [2018-07-24 02:58:11,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164341 states. [2018-07-24 02:58:11,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164341 states to 164341 states and 186173 transitions. [2018-07-24 02:58:11,376 INFO L78 Accepts]: Start accepts. Automaton has 164341 states and 186173 transitions. Word has length 409 [2018-07-24 02:58:11,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 02:58:11,377 INFO L471 AbstractCegarLoop]: Abstraction has 164341 states and 186173 transitions. [2018-07-24 02:58:11,377 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 02:58:11,377 INFO L276 IsEmpty]: Start isEmpty. Operand 164341 states and 186173 transitions. [2018-07-24 02:58:11,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 452 [2018-07-24 02:58:11,386 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 02:58:11,387 INFO L353 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 02:58:11,387 INFO L414 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 02:58:11,387 INFO L82 PathProgramCache]: Analyzing trace with hash 2093556076, now seen corresponding path program 1 times [2018-07-24 02:58:11,387 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 02:58:11,388 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 02:58:11,388 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 02:58:11,388 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 02:58:11,389 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 02:58:11,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 02:58:11,994 WARN L169 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 8 [2018-07-24 02:58:12,153 INFO L134 CoverageAnalysis]: Checked inductivity of 693 backedges. 413 proven. 5 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2018-07-24 02:58:12,153 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 02:58:12,154 INFO L221 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/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 [2018-07-24 02:58:12,164 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 02:58:12,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 02:58:12,314 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 02:58:12,959 INFO L134 CoverageAnalysis]: Checked inductivity of 693 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 574 trivial. 0 not checked. [2018-07-24 02:58:12,980 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-24 02:58:12,980 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2018-07-24 02:58:12,981 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-24 02:58:12,981 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-24 02:58:12,981 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-07-24 02:58:12,981 INFO L87 Difference]: Start difference. First operand 164341 states and 186173 transitions. Second operand 8 states. [2018-07-24 02:58:34,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 02:58:34,689 INFO L93 Difference]: Finished difference Result 332739 states and 377644 transitions. [2018-07-24 02:58:34,689 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-07-24 02:58:34,689 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 451 [2018-07-24 02:58:34,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 02:58:34,882 INFO L225 Difference]: With dead ends: 332739 [2018-07-24 02:58:34,882 INFO L226 Difference]: Without dead ends: 165218 [2018-07-24 02:58:34,943 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 470 GetRequests, 456 SyntacticMatches, 4 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2018-07-24 02:58:35,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165218 states. [2018-07-24 02:58:36,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165218 to 150885. [2018-07-24 02:58:36,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150885 states. [2018-07-24 02:58:36,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150885 states to 150885 states and 163085 transitions. [2018-07-24 02:58:36,183 INFO L78 Accepts]: Start accepts. Automaton has 150885 states and 163085 transitions. Word has length 451 [2018-07-24 02:58:36,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 02:58:36,184 INFO L471 AbstractCegarLoop]: Abstraction has 150885 states and 163085 transitions. [2018-07-24 02:58:36,184 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-24 02:58:36,184 INFO L276 IsEmpty]: Start isEmpty. Operand 150885 states and 163085 transitions. [2018-07-24 02:58:36,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 513 [2018-07-24 02:58:36,196 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 02:58:36,196 INFO L353 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 02:58:36,197 INFO L414 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 02:58:36,197 INFO L82 PathProgramCache]: Analyzing trace with hash 2121412464, now seen corresponding path program 1 times [2018-07-24 02:58:36,197 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 02:58:36,197 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 02:58:36,198 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 02:58:36,198 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 02:58:36,198 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 02:58:36,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 02:58:36,886 INFO L134 CoverageAnalysis]: Checked inductivity of 710 backedges. 435 proven. 0 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2018-07-24 02:58:36,887 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 02:58:36,887 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 02:58:36,888 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 02:58:36,888 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 02:58:36,888 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 02:58:36,889 INFO L87 Difference]: Start difference. First operand 150885 states and 163085 transitions. Second operand 4 states. [2018-07-24 02:58:48,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 02:58:48,061 INFO L93 Difference]: Finished difference Result 302577 states and 327032 transitions. [2018-07-24 02:58:48,061 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 02:58:48,061 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 512 [2018-07-24 02:58:48,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 02:58:48,226 INFO L225 Difference]: With dead ends: 302577 [2018-07-24 02:58:48,227 INFO L226 Difference]: Without dead ends: 150110 [2018-07-24 02:58:48,294 INFO L573 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 [2018-07-24 02:58:48,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150110 states. [2018-07-24 02:58:49,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150110 to 148510. [2018-07-24 02:58:49,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148510 states. [2018-07-24 02:58:49,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148510 states to 148510 states and 157377 transitions. [2018-07-24 02:58:49,456 INFO L78 Accepts]: Start accepts. Automaton has 148510 states and 157377 transitions. Word has length 512 [2018-07-24 02:58:49,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 02:58:49,457 INFO L471 AbstractCegarLoop]: Abstraction has 148510 states and 157377 transitions. [2018-07-24 02:58:49,457 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 02:58:49,457 INFO L276 IsEmpty]: Start isEmpty. Operand 148510 states and 157377 transitions. [2018-07-24 02:58:49,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 523 [2018-07-24 02:58:49,467 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 02:58:49,468 INFO L353 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, 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, 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] [2018-07-24 02:58:49,468 INFO L414 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 02:58:49,468 INFO L82 PathProgramCache]: Analyzing trace with hash -205855217, now seen corresponding path program 1 times [2018-07-24 02:58:49,468 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 02:58:49,468 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 02:58:49,469 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 02:58:49,469 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 02:58:49,470 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 02:58:49,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 02:58:51,037 INFO L134 CoverageAnalysis]: Checked inductivity of 916 backedges. 149 proven. 0 refuted. 0 times theorem prover too weak. 767 trivial. 0 not checked. [2018-07-24 02:58:51,037 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 02:58:51,037 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-07-24 02:58:51,038 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 02:58:51,038 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 02:58:51,038 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 02:58:51,038 INFO L87 Difference]: Start difference. First operand 148510 states and 157377 transitions. Second operand 3 states. [2018-07-24 02:58:57,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 02:58:57,571 INFO L93 Difference]: Finished difference Result 294642 states and 312067 transitions. [2018-07-24 02:58:57,571 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 02:58:57,571 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 522 [2018-07-24 02:58:57,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 02:58:57,750 INFO L225 Difference]: With dead ends: 294642 [2018-07-24 02:58:57,751 INFO L226 Difference]: Without dead ends: 146920 [2018-07-24 02:58:57,834 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 02:58:57,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146920 states. [2018-07-24 02:59:00,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146920 to 146920. [2018-07-24 02:59:00,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146920 states. [2018-07-24 02:59:00,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146920 states to 146920 states and 155464 transitions. [2018-07-24 02:59:00,243 INFO L78 Accepts]: Start accepts. Automaton has 146920 states and 155464 transitions. Word has length 522 [2018-07-24 02:59:00,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 02:59:00,244 INFO L471 AbstractCegarLoop]: Abstraction has 146920 states and 155464 transitions. [2018-07-24 02:59:00,245 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 02:59:00,245 INFO L276 IsEmpty]: Start isEmpty. Operand 146920 states and 155464 transitions. [2018-07-24 02:59:00,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 536 [2018-07-24 02:59:00,255 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 02:59:00,256 INFO L353 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 02:59:00,256 INFO L414 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 02:59:00,256 INFO L82 PathProgramCache]: Analyzing trace with hash 1031849718, now seen corresponding path program 1 times [2018-07-24 02:59:00,256 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 02:59:00,256 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 02:59:00,257 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 02:59:00,257 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 02:59:00,257 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 02:59:00,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 02:59:00,896 WARN L169 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 8 [2018-07-24 02:59:01,078 INFO L134 CoverageAnalysis]: Checked inductivity of 710 backedges. 435 proven. 0 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2018-07-24 02:59:01,078 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 02:59:01,078 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 02:59:01,078 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 02:59:01,079 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 02:59:01,079 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 02:59:01,079 INFO L87 Difference]: Start difference. First operand 146920 states and 155464 transitions. Second operand 4 states. [2018-07-24 02:59:18,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 02:59:18,054 INFO L93 Difference]: Finished difference Result 323853 states and 343318 transitions. [2018-07-24 02:59:18,054 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 02:59:18,055 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 535 [2018-07-24 02:59:18,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 02:59:18,256 INFO L225 Difference]: With dead ends: 323853 [2018-07-24 02:59:18,256 INFO L226 Difference]: Without dead ends: 177723 [2018-07-24 02:59:18,317 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 02:59:18,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177723 states. [2018-07-24 02:59:19,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177723 to 174512. [2018-07-24 02:59:19,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174512 states. [2018-07-24 02:59:19,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174512 states to 174512 states and 184082 transitions. [2018-07-24 02:59:19,827 INFO L78 Accepts]: Start accepts. Automaton has 174512 states and 184082 transitions. Word has length 535 [2018-07-24 02:59:19,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 02:59:19,828 INFO L471 AbstractCegarLoop]: Abstraction has 174512 states and 184082 transitions. [2018-07-24 02:59:19,828 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 02:59:19,828 INFO L276 IsEmpty]: Start isEmpty. Operand 174512 states and 184082 transitions. [2018-07-24 02:59:19,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 704 [2018-07-24 02:59:19,853 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 02:59:19,854 INFO L353 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, 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, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 02:59:19,854 INFO L414 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 02:59:19,854 INFO L82 PathProgramCache]: Analyzing trace with hash 960867478, now seen corresponding path program 1 times [2018-07-24 02:59:19,854 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 02:59:19,854 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 02:59:19,855 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 02:59:19,855 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 02:59:19,855 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 02:59:19,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 02:59:21,446 INFO L134 CoverageAnalysis]: Checked inductivity of 1054 backedges. 861 proven. 16 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2018-07-24 02:59:21,447 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 02:59:21,447 INFO L221 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/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 [2018-07-24 02:59:21,454 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 02:59:21,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 02:59:21,703 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 02:59:22,054 INFO L134 CoverageAnalysis]: Checked inductivity of 1054 backedges. 861 proven. 0 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2018-07-24 02:59:22,075 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-24 02:59:22,076 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2018-07-24 02:59:22,077 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 02:59:22,077 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 02:59:22,077 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-24 02:59:22,078 INFO L87 Difference]: Start difference. First operand 174512 states and 184082 transitions. Second operand 5 states. [2018-07-24 02:59:36,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 02:59:36,062 INFO L93 Difference]: Finished difference Result 346685 states and 365748 transitions. [2018-07-24 02:59:36,062 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-24 02:59:36,062 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 703 [2018-07-24 02:59:36,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 02:59:36,247 INFO L225 Difference]: With dead ends: 346685 [2018-07-24 02:59:36,247 INFO L226 Difference]: Without dead ends: 169797 [2018-07-24 02:59:36,333 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 707 GetRequests, 703 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-24 02:59:36,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169797 states. [2018-07-24 02:59:37,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169797 to 160300. [2018-07-24 02:59:37,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160300 states. [2018-07-24 02:59:38,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160300 states to 160300 states and 166421 transitions. [2018-07-24 02:59:38,124 INFO L78 Accepts]: Start accepts. Automaton has 160300 states and 166421 transitions. Word has length 703 [2018-07-24 02:59:38,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 02:59:38,125 INFO L471 AbstractCegarLoop]: Abstraction has 160300 states and 166421 transitions. [2018-07-24 02:59:38,125 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 02:59:38,125 INFO L276 IsEmpty]: Start isEmpty. Operand 160300 states and 166421 transitions. [2018-07-24 02:59:38,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 823 [2018-07-24 02:59:38,149 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 02:59:38,150 INFO L353 BasicCegarLoop]: trace histogram [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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 02:59:38,150 INFO L414 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 02:59:38,150 INFO L82 PathProgramCache]: Analyzing trace with hash 264682033, now seen corresponding path program 1 times [2018-07-24 02:59:38,151 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 02:59:38,151 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 02:59:38,151 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 02:59:38,152 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 02:59:38,152 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 02:59:38,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 02:59:39,665 INFO L134 CoverageAnalysis]: Checked inductivity of 1433 backedges. 666 proven. 0 refuted. 0 times theorem prover too weak. 767 trivial. 0 not checked. [2018-07-24 02:59:39,666 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 02:59:39,666 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-24 02:59:39,666 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 02:59:39,667 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 02:59:39,667 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-24 02:59:39,667 INFO L87 Difference]: Start difference. First operand 160300 states and 166421 transitions. Second operand 5 states. Received shutdown request... [2018-07-24 02:59:46,582 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-24 02:59:46,582 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-24 02:59:46,588 WARN L202 ceAbstractionStarter]: Timeout [2018-07-24 02:59:46,588 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.07 02:59:46 BoogieIcfgContainer [2018-07-24 02:59:46,588 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-24 02:59:46,589 INFO L168 Benchmark]: Toolchain (without parser) took 234353.09 ms. Allocated memory was 1.5 GB in the beginning and 4.4 GB in the end (delta: 2.9 GB). Free memory was 1.4 GB in the beginning and 2.0 GB in the end (delta: -561.6 MB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. [2018-07-24 02:59:46,590 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-24 02:59:46,591 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3074.31 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 327.7 MB). Peak memory consumption was 327.7 MB. Max. memory is 7.1 GB. [2018-07-24 02:59:46,592 INFO L168 Benchmark]: Boogie Procedure Inliner took 777.07 ms. Allocated memory was 1.5 GB in the beginning and 1.8 GB in the end (delta: 271.6 MB). Free memory was 1.1 GB in the beginning and 1.6 GB in the end (delta: -532.1 MB). Peak memory consumption was 215.7 MB. Max. memory is 7.1 GB. [2018-07-24 02:59:46,593 INFO L168 Benchmark]: Boogie Preprocessor took 1568.93 ms. Allocated memory was 1.8 GB in the beginning and 2.5 GB in the end (delta: 660.6 MB). Free memory was 1.6 GB in the beginning and 2.2 GB in the end (delta: -624.6 MB). Peak memory consumption was 124.1 MB. Max. memory is 7.1 GB. [2018-07-24 02:59:46,594 INFO L168 Benchmark]: RCFGBuilder took 14004.08 ms. Allocated memory was 2.5 GB in the beginning and 2.9 GB in the end (delta: 448.8 MB). Free memory was 2.2 GB in the beginning and 2.7 GB in the end (delta: -439.7 MB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. [2018-07-24 02:59:46,595 INFO L168 Benchmark]: TraceAbstraction took 214923.51 ms. Allocated memory was 2.9 GB in the beginning and 4.4 GB in the end (delta: 1.5 GB). Free memory was 2.7 GB in the beginning and 2.0 GB in the end (delta: 707.1 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2018-07-24 02:59:46,600 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 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 3074.31 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 327.7 MB). Peak memory consumption was 327.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 777.07 ms. Allocated memory was 1.5 GB in the beginning and 1.8 GB in the end (delta: 271.6 MB). Free memory was 1.1 GB in the beginning and 1.6 GB in the end (delta: -532.1 MB). Peak memory consumption was 215.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 1568.93 ms. Allocated memory was 1.8 GB in the beginning and 2.5 GB in the end (delta: 660.6 MB). Free memory was 1.6 GB in the beginning and 2.2 GB in the end (delta: -624.6 MB). Peak memory consumption was 124.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 14004.08 ms. Allocated memory was 2.5 GB in the beginning and 2.9 GB in the end (delta: 448.8 MB). Free memory was 2.2 GB in the beginning and 2.7 GB in the end (delta: -439.7 MB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. * TraceAbstraction took 214923.51 ms. Allocated memory was 2.9 GB in the beginning and 4.4 GB in the end (delta: 1.5 GB). Free memory was 2.7 GB in the beginning and 2.0 GB in the end (delta: 707.1 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 105]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 105). Cancelled while BasicCegarLoop was constructing difference of abstraction (160300states) and interpolant automaton (currently 5 states, 5 states before enhancement), while ReachableStatesComputation was computing reachable states (69961 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1099 locations, 1 error locations. TIMEOUT Result, 214.8s OverallTime, 14 OverallIterations, 7 TraceHistogramMax, 189.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 11154 SDtfs, 36596 SDslu, 3491 SDs, 0 SdLazy, 73262 SolverSat, 16521 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 157.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1673 GetRequests, 1626 SyntacticMatches, 8 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 3.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=174512occurred in iteration=12, 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: 12.4s AutomataMinimizationTime, 13 MinimizatonAttempts, 62056 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 7.1s InterpolantComputationTime, 7017 NumberOfCodeBlocks, 7017 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 6999 ConstructedInterpolants, 0 QuantifiedInterpolants, 8151792 SizeOfPredicates, 1 NumberOfNonLiveVariables, 2134 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 18 InterpolantComputations, 14 PerfectInterpolantSequences, 9189/9218 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/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem13_label53_true-unreach-call.c_svcomp-Reach-64bit-Automizer_Default.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-24_02-59-46-616.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem13_label53_true-unreach-call.c_svcomp-Reach-64bit-Automizer_Default.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-24_02-59-46-616.csv Completed graceful shutdown