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_label37_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-71425fa [2018-07-22 12:35:45,075 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-22 12:35:45,077 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-22 12:35:45,097 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-22 12:35:45,098 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-22 12:35:45,099 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-22 12:35:45,101 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-22 12:35:45,107 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-22 12:35:45,109 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-22 12:35:45,112 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-22 12:35:45,113 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-22 12:35:45,113 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-22 12:35:45,114 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-22 12:35:45,115 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-22 12:35:45,120 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-22 12:35:45,121 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-22 12:35:45,121 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-22 12:35:45,124 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-22 12:35:45,126 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-22 12:35:45,127 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-22 12:35:45,128 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-22 12:35:45,129 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-22 12:35:45,132 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-22 12:35:45,132 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-22 12:35:45,132 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-22 12:35:45,133 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-22 12:35:45,134 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-22 12:35:45,135 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-22 12:35:45,136 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-22 12:35:45,137 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-22 12:35:45,137 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-22 12:35:45,137 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-22 12:35:45,138 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-22 12:35:45,138 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-22 12:35:45,139 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-22 12:35:45,139 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-22 12:35:45,140 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 12:35:45,158 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-22 12:35:45,158 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-22 12:35:45,159 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-22 12:35:45,159 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-07-22 12:35:45,160 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-07-22 12:35:45,160 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-07-22 12:35:45,160 INFO L133 SettingsManager]: * Use SBE=true [2018-07-22 12:35:45,160 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-22 12:35:45,160 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-22 12:35:45,161 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-22 12:35:45,161 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-22 12:35:45,161 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-22 12:35:45,161 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-22 12:35:45,161 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-22 12:35:45,162 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-22 12:35:45,162 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-22 12:35:45,162 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-22 12:35:45,162 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-22 12:35:45,162 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-22 12:35:45,163 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-22 12:35:45,163 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-22 12:35:45,163 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-07-22 12:35:45,163 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-22 12:35:45,163 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-22 12:35:45,163 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-07-22 12:35:45,164 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-22 12:35:45,164 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-22 12:35:45,164 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-22 12:35:45,164 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-22 12:35:45,215 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-22 12:35:45,235 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-22 12:35:45,240 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-22 12:35:45,242 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-22 12:35:45,242 INFO L276 PluginConnector]: CDTParser initialized [2018-07-22 12:35:45,243 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label37_true-unreach-call.c [2018-07-22 12:35:45,618 INFO L220 CDTParser]: Created temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/52b4bc25b/bf803da60bed41c48c8ab2e59b0dd669/FLAG9b07b0906 [2018-07-22 12:35:46,165 INFO L276 CDTParser]: Found 1 translation units. [2018-07-22 12:35:46,166 INFO L158 CDTParser]: Scanning /storage/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label37_true-unreach-call.c [2018-07-22 12:35:46,235 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/52b4bc25b/bf803da60bed41c48c8ab2e59b0dd669/FLAG9b07b0906 [2018-07-22 12:35:46,257 INFO L332 CDTParser]: Successfully deleted /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/52b4bc25b/bf803da60bed41c48c8ab2e59b0dd669 [2018-07-22 12:35:46,268 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-22 12:35:46,276 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-22 12:35:46,280 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-22 12:35:46,280 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-22 12:35:46,288 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-22 12:35:46,290 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 12:35:46" (1/1) ... [2018-07-22 12:35:46,292 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2df9384a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:35:46, skipping insertion in model container [2018-07-22 12:35:46,293 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 12:35:46" (1/1) ... [2018-07-22 12:35:46,718 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-22 12:35:48,039 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-22 12:35:48,057 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-22 12:35:48,995 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-22 12:35:49,301 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:35:49 WrapperNode [2018-07-22 12:35:49,301 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-22 12:35:49,302 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-22 12:35:49,303 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-22 12:35:49,306 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-22 12:35:49,316 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:35:49" (1/1) ... [2018-07-22 12:35:49,589 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:35:49" (1/1) ... [2018-07-22 12:35:50,125 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-22 12:35:50,126 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-22 12:35:50,126 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-22 12:35:50,126 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-22 12:35:50,137 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:35:49" (1/1) ... [2018-07-22 12:35:50,137 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:35:49" (1/1) ... [2018-07-22 12:35:50,199 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:35:49" (1/1) ... [2018-07-22 12:35:50,199 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:35:49" (1/1) ... [2018-07-22 12:35:50,363 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:35:49" (1/1) ... [2018-07-22 12:35:51,873 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:35:49" (1/1) ... [2018-07-22 12:35:51,935 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:35:49" (1/1) ... [2018-07-22 12:35:51,992 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-22 12:35:51,993 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-22 12:35:51,993 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-22 12:35:51,993 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-22 12:35:51,996 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:35:49" (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 12:35:52,067 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-07-22 12:35:52,067 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-22 12:35:52,067 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-22 12:36:06,197 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-22 12:36:06,198 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 12:36:06 BoogieIcfgContainer [2018-07-22 12:36:06,198 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-22 12:36:06,199 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-22 12:36:06,199 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-22 12:36:06,207 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-22 12:36:06,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 12:35:46" (1/3) ... [2018-07-22 12:36:06,209 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3581f185 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 12:36:06, skipping insertion in model container [2018-07-22 12:36:06,209 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:35:49" (2/3) ... [2018-07-22 12:36:06,209 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3581f185 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 12:36:06, skipping insertion in model container [2018-07-22 12:36:06,210 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 12:36:06" (3/3) ... [2018-07-22 12:36:06,212 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label37_true-unreach-call.c [2018-07-22 12:36:06,221 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-22 12:36:06,230 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-22 12:36:06,298 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-22 12:36:06,298 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-22 12:36:06,299 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-22 12:36:06,299 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-22 12:36:06,299 INFO L376 AbstractCegarLoop]: Backedges is TWOTRACK [2018-07-22 12:36:06,299 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-22 12:36:06,299 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-22 12:36:06,299 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-22 12:36:06,299 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-22 12:36:06,345 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states. [2018-07-22 12:36:06,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2018-07-22 12:36:06,356 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 12:36:06,357 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 12:36:06,357 INFO L414 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 12:36:06,363 INFO L82 PathProgramCache]: Analyzing trace with hash 1306950314, now seen corresponding path program 1 times [2018-07-22 12:36:06,365 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 12:36:06,365 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 12:36:06,421 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 12:36:06,421 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 12:36:06,421 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 12:36:06,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 12:36:06,767 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 12:36:06,770 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 12:36:06,770 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-22 12:36:06,773 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 12:36:06,788 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 12:36:06,788 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 12:36:06,791 INFO L87 Difference]: Start difference. First operand 1099 states. Second operand 4 states. [2018-07-22 12:36:19,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 12:36:19,083 INFO L93 Difference]: Finished difference Result 3991 states and 7504 transitions. [2018-07-22 12:36:19,084 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 12:36:19,085 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 55 [2018-07-22 12:36:19,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 12:36:19,127 INFO L225 Difference]: With dead ends: 3991 [2018-07-22 12:36:19,128 INFO L226 Difference]: Without dead ends: 2885 [2018-07-22 12:36:19,142 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 12:36:19,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2885 states. [2018-07-22 12:36:19,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2885 to 1946. [2018-07-22 12:36:19,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1946 states. [2018-07-22 12:36:19,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1946 states to 1946 states and 3412 transitions. [2018-07-22 12:36:19,315 INFO L78 Accepts]: Start accepts. Automaton has 1946 states and 3412 transitions. Word has length 55 [2018-07-22 12:36:19,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 12:36:19,316 INFO L471 AbstractCegarLoop]: Abstraction has 1946 states and 3412 transitions. [2018-07-22 12:36:19,316 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 12:36:19,316 INFO L276 IsEmpty]: Start isEmpty. Operand 1946 states and 3412 transitions. [2018-07-22 12:36:19,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-07-22 12:36:19,323 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 12:36:19,323 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, 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] [2018-07-22 12:36:19,323 INFO L414 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 12:36:19,324 INFO L82 PathProgramCache]: Analyzing trace with hash -1157170007, now seen corresponding path program 1 times [2018-07-22 12:36:19,324 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 12:36:19,324 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 12:36:19,329 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 12:36:19,329 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 12:36:19,330 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 12:36:19,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 12:36:20,023 WARN L169 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 27 [2018-07-22 12:36:20,182 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-22 12:36:20,183 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 12:36:20,183 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-22 12:36:20,185 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-22 12:36:20,185 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-22 12:36:20,185 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-07-22 12:36:20,187 INFO L87 Difference]: Start difference. First operand 1946 states and 3412 transitions. Second operand 5 states. [2018-07-22 12:36:20,309 WARN L169 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-07-22 12:36:35,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 12:36:35,282 INFO L93 Difference]: Finished difference Result 7072 states and 12469 transitions. [2018-07-22 12:36:35,283 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-22 12:36:35,283 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 122 [2018-07-22 12:36:35,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 12:36:35,310 INFO L225 Difference]: With dead ends: 7072 [2018-07-22 12:36:35,310 INFO L226 Difference]: Without dead ends: 5128 [2018-07-22 12:36:35,314 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-07-22 12:36:35,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5128 states. [2018-07-22 12:36:35,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5128 to 5127. [2018-07-22 12:36:35,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5127 states. [2018-07-22 12:36:35,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5127 states to 5127 states and 7571 transitions. [2018-07-22 12:36:35,476 INFO L78 Accepts]: Start accepts. Automaton has 5127 states and 7571 transitions. Word has length 122 [2018-07-22 12:36:35,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 12:36:35,477 INFO L471 AbstractCegarLoop]: Abstraction has 5127 states and 7571 transitions. [2018-07-22 12:36:35,477 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-22 12:36:35,477 INFO L276 IsEmpty]: Start isEmpty. Operand 5127 states and 7571 transitions. [2018-07-22 12:36:35,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2018-07-22 12:36:35,484 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 12:36:35,485 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 12:36:35,485 INFO L414 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 12:36:35,485 INFO L82 PathProgramCache]: Analyzing trace with hash 660014601, now seen corresponding path program 1 times [2018-07-22 12:36:35,485 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 12:36:35,486 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 12:36:35,487 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 12:36:35,491 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 12:36:35,491 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 12:36:35,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 12:36:35,992 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-22 12:36:35,993 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 12:36:35,993 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-22 12:36:35,994 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-22 12:36:35,994 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-22 12:36:35,994 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-22 12:36:35,994 INFO L87 Difference]: Start difference. First operand 5127 states and 7571 transitions. Second operand 5 states. [2018-07-22 12:36:52,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 12:36:52,589 INFO L93 Difference]: Finished difference Result 16878 states and 26676 transitions. [2018-07-22 12:36:52,589 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-22 12:36:52,589 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 152 [2018-07-22 12:36:52,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 12:36:52,651 INFO L225 Difference]: With dead ends: 16878 [2018-07-22 12:36:52,651 INFO L226 Difference]: Without dead ends: 12541 [2018-07-22 12:36:52,658 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 12:36:52,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12541 states. [2018-07-22 12:36:52,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12541 to 12360. [2018-07-22 12:36:52,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12360 states. [2018-07-22 12:36:52,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12360 states to 12360 states and 18123 transitions. [2018-07-22 12:36:52,973 INFO L78 Accepts]: Start accepts. Automaton has 12360 states and 18123 transitions. Word has length 152 [2018-07-22 12:36:52,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 12:36:52,974 INFO L471 AbstractCegarLoop]: Abstraction has 12360 states and 18123 transitions. [2018-07-22 12:36:52,974 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-22 12:36:52,975 INFO L276 IsEmpty]: Start isEmpty. Operand 12360 states and 18123 transitions. [2018-07-22 12:36:52,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2018-07-22 12:36:52,983 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 12:36:52,983 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, 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, 1, 1, 1, 1, 1, 1, 1, 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 12:36:52,983 INFO L414 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 12:36:52,983 INFO L82 PathProgramCache]: Analyzing trace with hash 1906532463, now seen corresponding path program 1 times [2018-07-22 12:36:52,984 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 12:36:52,984 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 12:36:52,984 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 12:36:52,987 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 12:36:52,988 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 12:36:53,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 12:36:53,374 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 105 proven. 4 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-07-22 12:36:53,374 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-22 12:36:53,374 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 12:36:53,394 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 12:36:53,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 12:36:53,537 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-22 12:36:53,620 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 176 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-22 12:36:53,655 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-22 12:36:53,655 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-07-22 12:36:53,656 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 12:36:53,657 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 12:36:53,657 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 12:36:53,657 INFO L87 Difference]: Start difference. First operand 12360 states and 18123 transitions. Second operand 4 states. [2018-07-22 12:37:02,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 12:37:02,859 INFO L93 Difference]: Finished difference Result 44485 states and 66698 transitions. [2018-07-22 12:37:02,859 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 12:37:02,859 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 224 [2018-07-22 12:37:02,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 12:37:02,956 INFO L225 Difference]: With dead ends: 44485 [2018-07-22 12:37:02,956 INFO L226 Difference]: Without dead ends: 32915 [2018-07-22 12:37:02,975 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 224 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 12:37:03,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32915 states. [2018-07-22 12:37:03,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32915 to 21817. [2018-07-22 12:37:03,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21817 states. [2018-07-22 12:37:03,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21817 states to 21817 states and 29814 transitions. [2018-07-22 12:37:03,566 INFO L78 Accepts]: Start accepts. Automaton has 21817 states and 29814 transitions. Word has length 224 [2018-07-22 12:37:03,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 12:37:03,566 INFO L471 AbstractCegarLoop]: Abstraction has 21817 states and 29814 transitions. [2018-07-22 12:37:03,566 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 12:37:03,567 INFO L276 IsEmpty]: Start isEmpty. Operand 21817 states and 29814 transitions. [2018-07-22 12:37:03,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2018-07-22 12:37:03,570 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 12:37:03,571 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 12:37:03,571 INFO L414 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 12:37:03,571 INFO L82 PathProgramCache]: Analyzing trace with hash 824781445, now seen corresponding path program 1 times [2018-07-22 12:37:03,571 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 12:37:03,571 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 12:37:03,572 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 12:37:03,572 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 12:37:03,572 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 12:37:03,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 12:37:03,967 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 105 proven. 4 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2018-07-22 12:37:03,968 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-22 12:37:03,968 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 12:37:03,978 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 12:37:04,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 12:37:04,076 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-22 12:37:04,337 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 179 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-22 12:37:04,370 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-22 12:37:04,370 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-07-22 12:37:04,371 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 12:37:04,371 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 12:37:04,371 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 12:37:04,371 INFO L87 Difference]: Start difference. First operand 21817 states and 29814 transitions. Second operand 4 states. [2018-07-22 12:37:12,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 12:37:12,779 INFO L93 Difference]: Finished difference Result 78368 states and 107929 transitions. [2018-07-22 12:37:12,780 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 12:37:12,780 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 227 [2018-07-22 12:37:12,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 12:37:12,894 INFO L225 Difference]: With dead ends: 78368 [2018-07-22 12:37:12,894 INFO L226 Difference]: Without dead ends: 57341 [2018-07-22 12:37:12,925 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 227 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 12:37:12,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57341 states. [2018-07-22 12:37:13,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57341 to 40733. [2018-07-22 12:37:13,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40733 states. [2018-07-22 12:37:13,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40733 states to 40733 states and 53502 transitions. [2018-07-22 12:37:13,958 INFO L78 Accepts]: Start accepts. Automaton has 40733 states and 53502 transitions. Word has length 227 [2018-07-22 12:37:13,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 12:37:13,958 INFO L471 AbstractCegarLoop]: Abstraction has 40733 states and 53502 transitions. [2018-07-22 12:37:13,958 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 12:37:13,959 INFO L276 IsEmpty]: Start isEmpty. Operand 40733 states and 53502 transitions. [2018-07-22 12:37:13,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2018-07-22 12:37:13,967 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 12:37:13,967 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, 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, 1, 1, 1, 1, 1, 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 12:37:13,967 INFO L414 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 12:37:13,968 INFO L82 PathProgramCache]: Analyzing trace with hash -685477813, now seen corresponding path program 1 times [2018-07-22 12:37:13,968 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 12:37:13,969 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 12:37:13,969 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 12:37:13,969 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 12:37:13,970 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 12:37:14,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 12:37:14,510 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 105 proven. 104 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-22 12:37:14,510 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-22 12:37:14,510 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 12:37:14,523 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 12:37:14,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 12:37:14,623 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-22 12:37:14,815 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2018-07-22 12:37:14,845 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-22 12:37:14,846 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2018-07-22 12:37:14,846 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-22 12:37:14,847 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-22 12:37:14,847 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-22 12:37:14,847 INFO L87 Difference]: Start difference. First operand 40733 states and 53502 transitions. Second operand 5 states. [2018-07-22 12:37:24,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 12:37:24,722 INFO L93 Difference]: Finished difference Result 131101 states and 174102 transitions. [2018-07-22 12:37:24,723 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 12:37:24,723 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 288 [2018-07-22 12:37:24,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 12:37:24,823 INFO L225 Difference]: With dead ends: 131101 [2018-07-22 12:37:24,823 INFO L226 Difference]: Without dead ends: 91158 [2018-07-22 12:37:24,867 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 287 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 12:37:24,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91158 states. [2018-07-22 12:37:25,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91158 to 89579. [2018-07-22 12:37:25,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89579 states. [2018-07-22 12:37:26,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89579 states to 89579 states and 111027 transitions. [2018-07-22 12:37:26,088 INFO L78 Accepts]: Start accepts. Automaton has 89579 states and 111027 transitions. Word has length 288 [2018-07-22 12:37:26,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 12:37:26,088 INFO L471 AbstractCegarLoop]: Abstraction has 89579 states and 111027 transitions. [2018-07-22 12:37:26,089 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-22 12:37:26,089 INFO L276 IsEmpty]: Start isEmpty. Operand 89579 states and 111027 transitions. [2018-07-22 12:37:26,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2018-07-22 12:37:26,104 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 12:37:26,553 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:37:26,553 INFO L414 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 12:37:26,553 INFO L82 PathProgramCache]: Analyzing trace with hash 899721625, now seen corresponding path program 1 times [2018-07-22 12:37:26,553 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 12:37:26,553 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 12:37:26,554 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 12:37:26,554 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 12:37:26,554 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 12:37:26,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 12:37:27,136 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 201 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-22 12:37:27,137 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 12:37:27,137 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-22 12:37:27,138 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 12:37:27,138 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 12:37:27,138 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 12:37:27,138 INFO L87 Difference]: Start difference. First operand 89579 states and 111027 transitions. Second operand 4 states. [2018-07-22 12:37:35,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 12:37:35,985 INFO L93 Difference]: Finished difference Result 277681 states and 339583 transitions. [2018-07-22 12:37:35,986 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 12:37:35,986 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 362 [2018-07-22 12:37:35,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 12:37:36,195 INFO L225 Difference]: With dead ends: 277681 [2018-07-22 12:37:36,195 INFO L226 Difference]: Without dead ends: 188892 [2018-07-22 12:37:36,245 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 12:37:36,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188892 states. [2018-07-22 12:37:41,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188892 to 184118. [2018-07-22 12:37:41,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184118 states. [2018-07-22 12:37:42,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184118 states to 184118 states and 214657 transitions. [2018-07-22 12:37:42,119 INFO L78 Accepts]: Start accepts. Automaton has 184118 states and 214657 transitions. Word has length 362 [2018-07-22 12:37:42,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 12:37:42,120 INFO L471 AbstractCegarLoop]: Abstraction has 184118 states and 214657 transitions. [2018-07-22 12:37:42,120 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 12:37:42,120 INFO L276 IsEmpty]: Start isEmpty. Operand 184118 states and 214657 transitions. [2018-07-22 12:37:42,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2018-07-22 12:37:42,137 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 12:37:42,137 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, 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, 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] [2018-07-22 12:37:42,138 INFO L414 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 12:37:42,138 INFO L82 PathProgramCache]: Analyzing trace with hash -1379185741, now seen corresponding path program 1 times [2018-07-22 12:37:42,138 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 12:37:42,138 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 12:37:42,139 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 12:37:42,139 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 12:37:42,139 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 12:37:42,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 12:37:42,414 INFO L134 CoverageAnalysis]: Checked inductivity of 424 backedges. 371 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2018-07-22 12:37:42,414 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 12:37:42,414 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-22 12:37:42,415 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-22 12:37:42,415 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-22 12:37:42,415 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-22 12:37:42,415 INFO L87 Difference]: Start difference. First operand 184118 states and 214657 transitions. Second operand 3 states. [2018-07-22 12:37:50,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 12:37:50,248 INFO L93 Difference]: Finished difference Result 365849 states and 426388 transitions. [2018-07-22 12:37:50,249 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-22 12:37:50,249 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 367 [2018-07-22 12:37:50,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 12:37:50,436 INFO L225 Difference]: With dead ends: 365849 [2018-07-22 12:37:50,436 INFO L226 Difference]: Without dead ends: 175412 [2018-07-22 12:37:50,513 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 12:37:50,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175412 states. [2018-07-22 12:37:52,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175412 to 169094. [2018-07-22 12:37:52,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169094 states. [2018-07-22 12:37:52,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169094 states to 169094 states and 187967 transitions. [2018-07-22 12:37:52,857 INFO L78 Accepts]: Start accepts. Automaton has 169094 states and 187967 transitions. Word has length 367 [2018-07-22 12:37:52,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 12:37:52,892 INFO L471 AbstractCegarLoop]: Abstraction has 169094 states and 187967 transitions. [2018-07-22 12:37:52,892 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-22 12:37:52,892 INFO L276 IsEmpty]: Start isEmpty. Operand 169094 states and 187967 transitions. [2018-07-22 12:37:52,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 485 [2018-07-22 12:37:52,917 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 12:37:52,917 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 12:37:52,918 INFO L414 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 12:37:52,918 INFO L82 PathProgramCache]: Analyzing trace with hash -714900567, now seen corresponding path program 1 times [2018-07-22 12:37:52,918 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 12:37:52,918 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 12:37:52,920 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 12:37:52,920 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 12:37:52,920 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 12:37:52,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 12:37:54,438 INFO L134 CoverageAnalysis]: Checked inductivity of 777 backedges. 479 proven. 110 refuted. 0 times theorem prover too weak. 188 trivial. 0 not checked. [2018-07-22 12:37:54,438 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-22 12:37:54,439 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 12:37:54,445 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 12:37:54,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 12:37:54,560 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-22 12:37:54,693 INFO L134 CoverageAnalysis]: Checked inductivity of 777 backedges. 610 proven. 0 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2018-07-22 12:37:54,713 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-22 12:37:54,714 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2018-07-22 12:37:54,714 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-22 12:37:54,714 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-22 12:37:54,714 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-07-22 12:37:54,715 INFO L87 Difference]: Start difference. First operand 169094 states and 187967 transitions. Second operand 8 states. [2018-07-22 12:38:18,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 12:38:18,180 INFO L93 Difference]: Finished difference Result 364222 states and 404570 transitions. [2018-07-22 12:38:18,181 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-22 12:38:18,181 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 484 [2018-07-22 12:38:18,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 12:38:18,431 INFO L225 Difference]: With dead ends: 364222 [2018-07-22 12:38:18,431 INFO L226 Difference]: Without dead ends: 184077 [2018-07-22 12:38:18,504 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 499 GetRequests, 488 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2018-07-22 12:38:18,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184077 states. [2018-07-22 12:38:20,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184077 to 172196. [2018-07-22 12:38:20,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172196 states. [2018-07-22 12:38:21,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172196 states to 172196 states and 183156 transitions. [2018-07-22 12:38:21,021 INFO L78 Accepts]: Start accepts. Automaton has 172196 states and 183156 transitions. Word has length 484 [2018-07-22 12:38:21,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 12:38:21,021 INFO L471 AbstractCegarLoop]: Abstraction has 172196 states and 183156 transitions. [2018-07-22 12:38:21,021 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-22 12:38:21,022 INFO L276 IsEmpty]: Start isEmpty. Operand 172196 states and 183156 transitions. [2018-07-22 12:38:21,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1194 [2018-07-22 12:38:21,143 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 12:38:21,144 INFO L358 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, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:38:21,144 INFO L414 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 12:38:21,144 INFO L82 PathProgramCache]: Analyzing trace with hash 1139098931, now seen corresponding path program 1 times [2018-07-22 12:38:21,144 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 12:38:21,145 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 12:38:21,145 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 12:38:21,146 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 12:38:21,146 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 12:38:21,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 12:38:25,904 INFO L134 CoverageAnalysis]: Checked inductivity of 1517 backedges. 1025 proven. 0 refuted. 0 times theorem prover too weak. 492 trivial. 0 not checked. [2018-07-22 12:38:25,904 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 12:38:25,904 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-22 12:38:25,905 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 12:38:25,905 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 12:38:25,905 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 12:38:25,905 INFO L87 Difference]: Start difference. First operand 172196 states and 183156 transitions. Second operand 4 states. [2018-07-22 12:38:33,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 12:38:33,959 INFO L93 Difference]: Finished difference Result 415329 states and 441239 transitions. [2018-07-22 12:38:33,960 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 12:38:33,960 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1193 [2018-07-22 12:38:33,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 12:38:34,210 INFO L225 Difference]: With dead ends: 415329 [2018-07-22 12:38:34,211 INFO L226 Difference]: Without dead ends: 233652 [2018-07-22 12:38:34,276 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 2 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 12:38:34,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233652 states. [2018-07-22 12:38:36,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233652 to 222582. [2018-07-22 12:38:36,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222582 states. [2018-07-22 12:38:37,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222582 states to 222582 states and 233311 transitions. [2018-07-22 12:38:37,130 INFO L78 Accepts]: Start accepts. Automaton has 222582 states and 233311 transitions. Word has length 1193 [2018-07-22 12:38:37,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 12:38:37,132 INFO L471 AbstractCegarLoop]: Abstraction has 222582 states and 233311 transitions. [2018-07-22 12:38:37,132 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 12:38:37,133 INFO L276 IsEmpty]: Start isEmpty. Operand 222582 states and 233311 transitions. [2018-07-22 12:38:37,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1204 [2018-07-22 12:38:37,266 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 12:38:37,266 INFO L358 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:38:37,267 INFO L414 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 12:38:37,267 INFO L82 PathProgramCache]: Analyzing trace with hash 934648375, now seen corresponding path program 1 times [2018-07-22 12:38:37,267 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 12:38:37,268 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 12:38:37,268 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 12:38:37,268 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 12:38:37,269 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 12:38:37,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 12:38:42,410 INFO L134 CoverageAnalysis]: Checked inductivity of 2162 backedges. 1342 proven. 0 refuted. 0 times theorem prover too weak. 820 trivial. 0 not checked. [2018-07-22 12:38:42,410 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 12:38:42,410 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-22 12:38:42,411 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 12:38:42,411 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 12:38:42,411 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 12:38:42,412 INFO L87 Difference]: Start difference. First operand 222582 states and 233311 transitions. Second operand 4 states. [2018-07-22 12:38:49,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 12:38:49,698 INFO L93 Difference]: Finished difference Result 444404 states and 465916 transitions. [2018-07-22 12:38:49,699 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 12:38:49,699 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1203 [2018-07-22 12:38:49,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 12:38:49,921 INFO L225 Difference]: With dead ends: 444404 [2018-07-22 12:38:49,921 INFO L226 Difference]: Without dead ends: 222612 [2018-07-22 12:38:50,008 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 12:38:50,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222612 states. [2018-07-22 12:38:52,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222612 to 221003. [2018-07-22 12:38:52,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221003 states. [2018-07-22 12:38:52,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221003 states to 221003 states and 229079 transitions. [2018-07-22 12:38:52,425 INFO L78 Accepts]: Start accepts. Automaton has 221003 states and 229079 transitions. Word has length 1203 [2018-07-22 12:38:52,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 12:38:52,426 INFO L471 AbstractCegarLoop]: Abstraction has 221003 states and 229079 transitions. [2018-07-22 12:38:52,426 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 12:38:52,426 INFO L276 IsEmpty]: Start isEmpty. Operand 221003 states and 229079 transitions. [2018-07-22 12:38:52,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1408 [2018-07-22 12:38:52,568 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 12:38:52,569 INFO L358 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, 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, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:38:52,569 INFO L414 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 12:38:52,569 INFO L82 PathProgramCache]: Analyzing trace with hash -862097054, now seen corresponding path program 1 times [2018-07-22 12:38:52,569 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 12:38:52,570 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 12:38:52,570 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 12:38:52,571 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 12:38:52,571 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 12:38:52,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 12:38:53,760 WARN L169 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 8 [2018-07-22 12:38:58,107 INFO L134 CoverageAnalysis]: Checked inductivity of 2215 backedges. 1729 proven. 0 refuted. 0 times theorem prover too weak. 486 trivial. 0 not checked. [2018-07-22 12:38:58,107 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 12:38:58,107 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-22 12:38:58,108 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 12:38:58,108 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 12:38:58,108 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 12:38:58,109 INFO L87 Difference]: Start difference. First operand 221003 states and 229079 transitions. Second operand 4 states. [2018-07-22 12:39:05,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 12:39:05,811 INFO L93 Difference]: Finished difference Result 445177 states and 461518 transitions. [2018-07-22 12:39:05,811 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 12:39:05,812 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1407 [2018-07-22 12:39:05,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 12:39:06,025 INFO L225 Difference]: With dead ends: 445177 [2018-07-22 12:39:06,026 INFO L226 Difference]: Without dead ends: 213911 [2018-07-22 12:39:06,080 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 12:39:06,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213911 states. [2018-07-22 12:39:08,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213911 to 209160. [2018-07-22 12:39:08,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209160 states. [2018-07-22 12:39:08,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209160 states to 209160 states and 215568 transitions. [2018-07-22 12:39:08,327 INFO L78 Accepts]: Start accepts. Automaton has 209160 states and 215568 transitions. Word has length 1407 [2018-07-22 12:39:08,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 12:39:08,328 INFO L471 AbstractCegarLoop]: Abstraction has 209160 states and 215568 transitions. [2018-07-22 12:39:08,328 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 12:39:08,328 INFO L276 IsEmpty]: Start isEmpty. Operand 209160 states and 215568 transitions. [2018-07-22 12:39:08,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1473 [2018-07-22 12:39:08,446 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 12:39:08,447 INFO L358 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, 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, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:39:08,447 INFO L414 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 12:39:08,448 INFO L82 PathProgramCache]: Analyzing trace with hash -1909131632, now seen corresponding path program 1 times [2018-07-22 12:39:08,448 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 12:39:08,448 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 12:39:08,449 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 12:39:08,449 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 12:39:08,449 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 12:39:08,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 12:39:14,289 INFO L134 CoverageAnalysis]: Checked inductivity of 2282 backedges. 1365 proven. 431 refuted. 0 times theorem prover too weak. 486 trivial. 0 not checked. [2018-07-22 12:39:14,289 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-22 12:39:14,289 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 12:39:14,298 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 12:39:14,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 12:39:14,670 INFO L273 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2018-07-22 12:39:14,732 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-07-22 12:39:14,933 WARN L512 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-22 12:39:14,933 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-22 12:39:14,937 WARN L202 ceAbstractionStarter]: Timeout [2018-07-22 12:39:14,937 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.07 12:39:14 BoogieIcfgContainer [2018-07-22 12:39:14,937 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-22 12:39:14,938 INFO L168 Benchmark]: Toolchain (without parser) took 208669.16 ms. Allocated memory was 308.8 MB in the beginning and 3.2 GB in the end (delta: 2.9 GB). Free memory was 236.6 MB in the beginning and 1.8 GB in the end (delta: -1.6 GB). Peak memory consumption was 1.3 GB. Max. memory is 5.3 GB. [2018-07-22 12:39:14,939 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 308.8 MB. Free memory is still 272.3 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-07-22 12:39:14,939 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3022.19 ms. Allocated memory was 308.8 MB in the beginning and 374.9 MB in the end (delta: 66.1 MB). Free memory was 235.6 MB in the beginning and 179.0 MB in the end (delta: 56.6 MB). Peak memory consumption was 122.6 MB. Max. memory is 5.3 GB. [2018-07-22 12:39:14,940 INFO L168 Benchmark]: Boogie Procedure Inliner took 822.98 ms. Allocated memory was 374.9 MB in the beginning and 392.7 MB in the end (delta: 17.8 MB). Free memory was 179.0 MB in the beginning and 178.2 MB in the end (delta: 870.7 kB). Peak memory consumption was 79.6 MB. Max. memory is 5.3 GB. [2018-07-22 12:39:14,941 INFO L168 Benchmark]: Boogie Preprocessor took 1866.94 ms. Allocated memory was 392.7 MB in the beginning and 726.1 MB in the end (delta: 333.4 MB). Free memory was 178.2 MB in the beginning and 543.3 MB in the end (delta: -365.2 MB). Peak memory consumption was 120.2 MB. Max. memory is 5.3 GB. [2018-07-22 12:39:14,941 INFO L168 Benchmark]: RCFGBuilder took 14204.89 ms. Allocated memory was 726.1 MB in the beginning and 952.6 MB in the end (delta: 226.5 MB). Free memory was 543.3 MB in the beginning and 524.8 MB in the end (delta: 18.6 MB). Peak memory consumption was 295.9 MB. Max. memory is 5.3 GB. [2018-07-22 12:39:14,942 INFO L168 Benchmark]: TraceAbstraction took 188738.52 ms. Allocated memory was 952.6 MB in the beginning and 3.2 GB in the end (delta: 2.3 GB). Free memory was 524.8 MB in the beginning and 1.8 GB in the end (delta: -1.3 GB). Peak memory consumption was 991.1 MB. Max. memory is 5.3 GB. [2018-07-22 12:39:14,946 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 308.8 MB. Free memory is still 272.3 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 3022.19 ms. Allocated memory was 308.8 MB in the beginning and 374.9 MB in the end (delta: 66.1 MB). Free memory was 235.6 MB in the beginning and 179.0 MB in the end (delta: 56.6 MB). Peak memory consumption was 122.6 MB. Max. memory is 5.3 GB. * Boogie Procedure Inliner took 822.98 ms. Allocated memory was 374.9 MB in the beginning and 392.7 MB in the end (delta: 17.8 MB). Free memory was 179.0 MB in the beginning and 178.2 MB in the end (delta: 870.7 kB). Peak memory consumption was 79.6 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 1866.94 ms. Allocated memory was 392.7 MB in the beginning and 726.1 MB in the end (delta: 333.4 MB). Free memory was 178.2 MB in the beginning and 543.3 MB in the end (delta: -365.2 MB). Peak memory consumption was 120.2 MB. Max. memory is 5.3 GB. * RCFGBuilder took 14204.89 ms. Allocated memory was 726.1 MB in the beginning and 952.6 MB in the end (delta: 226.5 MB). Free memory was 543.3 MB in the beginning and 524.8 MB in the end (delta: 18.6 MB). Peak memory consumption was 295.9 MB. Max. memory is 5.3 GB. * TraceAbstraction took 188738.52 ms. Allocated memory was 952.6 MB in the beginning and 3.2 GB in the end (delta: 2.3 GB). Free memory was 524.8 MB in the beginning and 1.8 GB in the end (delta: -1.3 GB). Peak memory consumption was 991.1 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 174]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 174). Cancelled while BasicCegarLoop was analyzing trace of length 1473 with TraceHistMax 7, while TraceCheckSpWp was constructing forward predicates, while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 6 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1099 locations, 1 error locations. TIMEOUT Result, 188.6s OverallTime, 13 OverallIterations, 8 TraceHistogramMax, 136.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 10090 SDtfs, 33549 SDslu, 3440 SDs, 0 SdLazy, 70560 SolverSat, 18132 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 109.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1282 GetRequests, 1239 SyntacticMatches, 7 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 3.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=222582occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 21.7s AutomataMinimizationTime, 12 MinimizatonAttempts, 70809 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 6.7s InterpolantComputationTime, 7307 NumberOfCodeBlocks, 7307 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 7291 ConstructedInterpolants, 0 QuantifiedInterpolants, 14156430 SizeOfPredicates, 2 NumberOfNonLiveVariables, 1668 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 16 InterpolantComputations, 12 PerfectInterpolantSequences, 9083/9305 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_label37_true-unreach-call.c_svcomp-Reach-64bit-Automizer_Default.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-22_12-39-14-958.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/Problem13_label37_true-unreach-call.c_svcomp-Reach-64bit-Automizer_Default.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-22_12-39-14-958.csv Completed graceful shutdown