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/Problem15_label04_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-24 03:01:11,946 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-24 03:01:11,949 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-24 03:01:11,971 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-24 03:01:11,971 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-24 03:01:11,973 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-24 03:01:11,974 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-24 03:01:11,977 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-24 03:01:11,980 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-24 03:01:11,981 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-24 03:01:11,985 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-24 03:01:11,985 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-24 03:01:11,987 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-24 03:01:11,988 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-24 03:01:11,992 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-24 03:01:11,993 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-24 03:01:12,000 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-24 03:01:12,006 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-24 03:01:12,010 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-24 03:01:12,015 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-24 03:01:12,017 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-24 03:01:12,020 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-24 03:01:12,022 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-24 03:01:12,024 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-24 03:01:12,025 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-24 03:01:12,026 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-24 03:01:12,027 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-24 03:01:12,028 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-24 03:01:12,029 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-24 03:01:12,035 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-24 03:01:12,035 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-24 03:01:12,036 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-07-24 03:01:12,040 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 03:01:12,069 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-24 03:01:12,070 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-24 03:01:12,071 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-24 03:01:12,071 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-07-24 03:01:12,072 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-07-24 03:01:12,072 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-07-24 03:01:12,072 INFO L133 SettingsManager]: * Use SBE=true [2018-07-24 03:01:12,072 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-24 03:01:12,072 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-24 03:01:12,073 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-24 03:01:12,073 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-24 03:01:12,073 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-24 03:01:12,074 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-24 03:01:12,074 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-24 03:01:12,075 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-24 03:01:12,075 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-24 03:01:12,075 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-24 03:01:12,075 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-24 03:01:12,075 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-24 03:01:12,076 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 03:01:12,076 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-24 03:01:12,076 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-24 03:01:12,076 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-24 03:01:12,078 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-07-24 03:01:12,078 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-24 03:01:12,078 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-24 03:01:12,078 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-24 03:01:12,078 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-24 03:01:12,126 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-24 03:01:12,139 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-24 03:01:12,143 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-24 03:01:12,145 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-24 03:01:12,145 INFO L276 PluginConnector]: CDTParser initialized [2018-07-24 03:01:12,146 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label04_true-unreach-call.c [2018-07-24 03:01:12,505 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe0f0b682/f894196af8ef408faf43afc09ac9db16/FLAGf69fd6002 [2018-07-24 03:01:12,955 INFO L276 CDTParser]: Found 1 translation units. [2018-07-24 03:01:12,956 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label04_true-unreach-call.c [2018-07-24 03:01:12,976 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe0f0b682/f894196af8ef408faf43afc09ac9db16/FLAGf69fd6002 [2018-07-24 03:01:12,992 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe0f0b682/f894196af8ef408faf43afc09ac9db16 [2018-07-24 03:01:13,002 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-24 03:01:13,004 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-24 03:01:13,005 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-24 03:01:13,005 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-24 03:01:13,011 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-24 03:01:13,012 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 03:01:12" (1/1) ... [2018-07-24 03:01:13,015 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3819ccc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:01:13, skipping insertion in model container [2018-07-24 03:01:13,016 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 03:01:12" (1/1) ... [2018-07-24 03:01:13,284 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-24 03:01:13,865 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 03:01:13,884 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-24 03:01:14,200 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 03:01:14,323 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:01:14 WrapperNode [2018-07-24 03:01:14,323 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-24 03:01:14,324 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-24 03:01:14,324 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-24 03:01:14,325 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-24 03:01:14,333 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:01:14" (1/1) ... [2018-07-24 03:01:14,391 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:01:14" (1/1) ... [2018-07-24 03:01:14,629 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-24 03:01:14,629 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-24 03:01:14,629 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-24 03:01:14,629 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-24 03:01:15,050 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:01:14" (1/1) ... [2018-07-24 03:01:15,050 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:01:14" (1/1) ... [2018-07-24 03:01:15,064 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:01:14" (1/1) ... [2018-07-24 03:01:15,065 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:01:14" (1/1) ... [2018-07-24 03:01:15,142 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:01:14" (1/1) ... [2018-07-24 03:01:15,178 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:01:14" (1/1) ... [2018-07-24 03:01:15,205 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:01:14" (1/1) ... [2018-07-24 03:01:15,228 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-24 03:01:15,229 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-24 03:01:15,229 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-24 03:01:15,229 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-24 03:01:15,230 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:01:14" (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 03:01:15,313 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-07-24 03:01:15,314 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-24 03:01:15,314 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-24 03:01:21,950 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-24 03:01:21,951 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 03:01:21 BoogieIcfgContainer [2018-07-24 03:01:21,951 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-24 03:01:21,952 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-24 03:01:21,952 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-24 03:01:21,954 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-24 03:01:21,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.07 03:01:12" (1/3) ... [2018-07-24 03:01:21,955 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63dac924 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 03:01:21, skipping insertion in model container [2018-07-24 03:01:21,956 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:01:14" (2/3) ... [2018-07-24 03:01:21,956 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63dac924 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 03:01:21, skipping insertion in model container [2018-07-24 03:01:21,956 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 03:01:21" (3/3) ... [2018-07-24 03:01:21,958 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label04_true-unreach-call.c [2018-07-24 03:01:21,966 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-24 03:01:21,975 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-24 03:01:22,029 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-24 03:01:22,030 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-24 03:01:22,030 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-24 03:01:22,030 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-24 03:01:22,030 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-24 03:01:22,030 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-24 03:01:22,031 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-24 03:01:22,031 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-24 03:01:22,031 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-24 03:01:22,060 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states. [2018-07-24 03:01:22,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-07-24 03:01:22,068 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 03:01:22,069 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 03:01:22,069 INFO L414 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 03:01:22,075 INFO L82 PathProgramCache]: Analyzing trace with hash 18549650, now seen corresponding path program 1 times [2018-07-24 03:01:22,077 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 03:01:22,078 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 03:01:22,131 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:01:22,131 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 03:01:22,131 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:01:22,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 03:01:22,525 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 03:01:22,531 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 03:01:22,531 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 03:01:22,536 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 03:01:22,551 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 03:01:22,552 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 03:01:22,555 INFO L87 Difference]: Start difference. First operand 425 states. Second operand 4 states. [2018-07-24 03:01:33,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 03:01:33,665 INFO L93 Difference]: Finished difference Result 1474 states and 2723 transitions. [2018-07-24 03:01:33,666 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 03:01:33,668 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2018-07-24 03:01:33,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 03:01:33,699 INFO L225 Difference]: With dead ends: 1474 [2018-07-24 03:01:33,699 INFO L226 Difference]: Without dead ends: 1042 [2018-07-24 03:01:33,705 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 03:01:33,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1042 states. [2018-07-24 03:01:33,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1042 to 1040. [2018-07-24 03:01:33,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1040 states. [2018-07-24 03:01:33,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1040 states to 1040 states and 1638 transitions. [2018-07-24 03:01:33,815 INFO L78 Accepts]: Start accepts. Automaton has 1040 states and 1638 transitions. Word has length 32 [2018-07-24 03:01:33,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 03:01:33,815 INFO L471 AbstractCegarLoop]: Abstraction has 1040 states and 1638 transitions. [2018-07-24 03:01:33,815 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 03:01:33,816 INFO L276 IsEmpty]: Start isEmpty. Operand 1040 states and 1638 transitions. [2018-07-24 03:01:33,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-07-24 03:01:33,820 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 03:01:33,821 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] [2018-07-24 03:01:33,821 INFO L414 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 03:01:33,821 INFO L82 PathProgramCache]: Analyzing trace with hash -573640083, now seen corresponding path program 1 times [2018-07-24 03:01:33,821 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 03:01:33,821 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 03:01:33,823 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:01:33,823 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 03:01:33,823 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:01:33,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 03:01:34,118 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 03:01:34,119 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 03:01:34,119 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 03:01:34,121 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 03:01:34,121 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 03:01:34,121 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 03:01:34,122 INFO L87 Difference]: Start difference. First operand 1040 states and 1638 transitions. Second operand 4 states. [2018-07-24 03:01:41,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 03:01:41,669 INFO L93 Difference]: Finished difference Result 3888 states and 6231 transitions. [2018-07-24 03:01:41,671 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 03:01:41,671 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 98 [2018-07-24 03:01:41,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 03:01:41,687 INFO L225 Difference]: With dead ends: 3888 [2018-07-24 03:01:41,687 INFO L226 Difference]: Without dead ends: 2850 [2018-07-24 03:01:41,693 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 03:01:41,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2850 states. [2018-07-24 03:01:41,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2850 to 2545. [2018-07-24 03:01:41,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2545 states. [2018-07-24 03:01:41,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2545 states to 2545 states and 3698 transitions. [2018-07-24 03:01:41,757 INFO L78 Accepts]: Start accepts. Automaton has 2545 states and 3698 transitions. Word has length 98 [2018-07-24 03:01:41,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 03:01:41,758 INFO L471 AbstractCegarLoop]: Abstraction has 2545 states and 3698 transitions. [2018-07-24 03:01:41,758 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 03:01:41,758 INFO L276 IsEmpty]: Start isEmpty. Operand 2545 states and 3698 transitions. [2018-07-24 03:01:41,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2018-07-24 03:01:41,780 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 03:01:41,780 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, 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] [2018-07-24 03:01:41,780 INFO L414 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 03:01:41,780 INFO L82 PathProgramCache]: Analyzing trace with hash 1595640980, now seen corresponding path program 1 times [2018-07-24 03:01:41,781 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 03:01:41,781 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 03:01:41,782 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:01:41,783 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 03:01:41,783 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:01:41,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 03:01:42,216 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 226 proven. 4 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2018-07-24 03:01:42,217 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 03:01:42,217 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 03:01:42,230 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 03:01:42,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 03:01:42,433 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 03:01:42,547 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 301 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2018-07-24 03:01:42,569 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-24 03:01:42,569 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-07-24 03:01:42,570 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 03:01:42,570 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 03:01:42,570 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 03:01:42,571 INFO L87 Difference]: Start difference. First operand 2545 states and 3698 transitions. Second operand 4 states. [2018-07-24 03:01:49,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 03:01:49,629 INFO L93 Difference]: Finished difference Result 9959 states and 14520 transitions. [2018-07-24 03:01:49,629 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 03:01:49,629 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 296 [2018-07-24 03:01:49,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 03:01:49,668 INFO L225 Difference]: With dead ends: 9959 [2018-07-24 03:01:49,668 INFO L226 Difference]: Without dead ends: 7416 [2018-07-24 03:01:49,675 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 296 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 03:01:49,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7416 states. [2018-07-24 03:01:49,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7416 to 4347. [2018-07-24 03:01:49,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4347 states. [2018-07-24 03:01:49,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4347 states to 4347 states and 5946 transitions. [2018-07-24 03:01:49,785 INFO L78 Accepts]: Start accepts. Automaton has 4347 states and 5946 transitions. Word has length 296 [2018-07-24 03:01:49,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 03:01:49,786 INFO L471 AbstractCegarLoop]: Abstraction has 4347 states and 5946 transitions. [2018-07-24 03:01:49,786 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 03:01:49,786 INFO L276 IsEmpty]: Start isEmpty. Operand 4347 states and 5946 transitions. [2018-07-24 03:01:49,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2018-07-24 03:01:49,793 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 03:01:49,793 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:01:49,794 INFO L414 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 03:01:49,794 INFO L82 PathProgramCache]: Analyzing trace with hash -1307750274, now seen corresponding path program 1 times [2018-07-24 03:01:49,794 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 03:01:49,794 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 03:01:49,795 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:01:49,796 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 03:01:49,796 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:01:49,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 03:01:50,501 WARN L169 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 12 [2018-07-24 03:01:50,863 WARN L169 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 11 [2018-07-24 03:01:51,205 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2018-07-24 03:01:51,205 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 03:01:51,206 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 03:01:51,206 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 03:01:51,207 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 03:01:51,207 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-24 03:01:51,207 INFO L87 Difference]: Start difference. First operand 4347 states and 5946 transitions. Second operand 5 states. [2018-07-24 03:01:59,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 03:01:59,108 INFO L93 Difference]: Finished difference Result 10494 states and 13878 transitions. [2018-07-24 03:01:59,108 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 03:01:59,109 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 325 [2018-07-24 03:01:59,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 03:01:59,144 INFO L225 Difference]: With dead ends: 10494 [2018-07-24 03:01:59,144 INFO L226 Difference]: Without dead ends: 6149 [2018-07-24 03:01:59,152 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-24 03:01:59,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6149 states. [2018-07-24 03:01:59,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6149 to 5848. [2018-07-24 03:01:59,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5848 states. [2018-07-24 03:01:59,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5848 states to 5848 states and 7545 transitions. [2018-07-24 03:01:59,265 INFO L78 Accepts]: Start accepts. Automaton has 5848 states and 7545 transitions. Word has length 325 [2018-07-24 03:01:59,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 03:01:59,266 INFO L471 AbstractCegarLoop]: Abstraction has 5848 states and 7545 transitions. [2018-07-24 03:01:59,266 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 03:01:59,267 INFO L276 IsEmpty]: Start isEmpty. Operand 5848 states and 7545 transitions. [2018-07-24 03:01:59,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 400 [2018-07-24 03:01:59,278 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 03:01:59,279 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:01:59,279 INFO L414 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 03:01:59,279 INFO L82 PathProgramCache]: Analyzing trace with hash -1800403920, now seen corresponding path program 1 times [2018-07-24 03:01:59,279 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 03:01:59,280 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 03:01:59,281 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:01:59,281 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 03:01:59,281 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:01:59,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 03:01:59,832 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 154 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 03:01:59,833 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 03:01:59,833 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 03:01:59,834 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 03:01:59,834 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 03:01:59,834 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 03:01:59,835 INFO L87 Difference]: Start difference. First operand 5848 states and 7545 transitions. Second operand 4 states. [2018-07-24 03:02:04,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 03:02:04,747 INFO L93 Difference]: Finished difference Result 13499 states and 17628 transitions. [2018-07-24 03:02:04,755 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 03:02:04,756 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 399 [2018-07-24 03:02:04,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 03:02:04,787 INFO L225 Difference]: With dead ends: 13499 [2018-07-24 03:02:04,787 INFO L226 Difference]: Without dead ends: 7653 [2018-07-24 03:02:04,794 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 3 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 03:02:04,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7653 states. [2018-07-24 03:02:04,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7653 to 7650. [2018-07-24 03:02:04,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7650 states. [2018-07-24 03:02:04,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7650 states to 7650 states and 9363 transitions. [2018-07-24 03:02:04,931 INFO L78 Accepts]: Start accepts. Automaton has 7650 states and 9363 transitions. Word has length 399 [2018-07-24 03:02:04,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 03:02:04,936 INFO L471 AbstractCegarLoop]: Abstraction has 7650 states and 9363 transitions. [2018-07-24 03:02:04,936 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 03:02:04,937 INFO L276 IsEmpty]: Start isEmpty. Operand 7650 states and 9363 transitions. [2018-07-24 03:02:04,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 495 [2018-07-24 03:02:04,954 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 03:02:04,955 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-07-24 03:02:04,955 INFO L414 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 03:02:04,956 INFO L82 PathProgramCache]: Analyzing trace with hash 108748036, now seen corresponding path program 1 times [2018-07-24 03:02:04,956 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 03:02:04,956 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 03:02:04,957 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:02:04,957 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 03:02:04,957 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:02:05,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 03:02:06,147 INFO L134 CoverageAnalysis]: Checked inductivity of 627 backedges. 486 proven. 4 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2018-07-24 03:02:06,148 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 03:02:06,148 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 03:02:06,158 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 03:02:06,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 03:02:06,346 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 03:02:06,619 INFO L134 CoverageAnalysis]: Checked inductivity of 627 backedges. 506 proven. 0 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2018-07-24 03:02:06,641 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-24 03:02:06,641 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2018-07-24 03:02:06,642 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-24 03:02:06,642 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-24 03:02:06,643 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2018-07-24 03:02:06,643 INFO L87 Difference]: Start difference. First operand 7650 states and 9363 transitions. Second operand 8 states. [2018-07-24 03:02:18,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 03:02:18,650 INFO L93 Difference]: Finished difference Result 21468 states and 25785 transitions. [2018-07-24 03:02:18,651 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-24 03:02:18,651 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 494 [2018-07-24 03:02:18,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 03:02:18,679 INFO L225 Difference]: With dead ends: 21468 [2018-07-24 03:02:18,679 INFO L226 Difference]: Without dead ends: 9745 [2018-07-24 03:02:18,692 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 508 GetRequests, 497 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=56, Invalid=76, Unknown=0, NotChecked=0, Total=132 [2018-07-24 03:02:18,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9745 states. [2018-07-24 03:02:18,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9745 to 9145. [2018-07-24 03:02:18,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9145 states. [2018-07-24 03:02:18,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9145 states to 9145 states and 10606 transitions. [2018-07-24 03:02:18,823 INFO L78 Accepts]: Start accepts. Automaton has 9145 states and 10606 transitions. Word has length 494 [2018-07-24 03:02:18,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 03:02:18,824 INFO L471 AbstractCegarLoop]: Abstraction has 9145 states and 10606 transitions. [2018-07-24 03:02:18,824 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-24 03:02:18,824 INFO L276 IsEmpty]: Start isEmpty. Operand 9145 states and 10606 transitions. [2018-07-24 03:02:18,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 537 [2018-07-24 03:02:18,838 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 03:02:18,838 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, 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] [2018-07-24 03:02:18,839 INFO L414 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 03:02:18,839 INFO L82 PathProgramCache]: Analyzing trace with hash -1530121091, now seen corresponding path program 1 times [2018-07-24 03:02:18,839 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 03:02:18,839 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 03:02:18,840 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:02:18,840 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 03:02:18,840 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:02:18,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 03:02:19,574 INFO L134 CoverageAnalysis]: Checked inductivity of 426 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2018-07-24 03:02:19,574 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 03:02:19,575 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-24 03:02:19,575 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 03:02:19,576 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 03:02:19,576 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-24 03:02:19,576 INFO L87 Difference]: Start difference. First operand 9145 states and 10606 transitions. Second operand 5 states. [2018-07-24 03:02:26,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 03:02:26,789 INFO L93 Difference]: Finished difference Result 26712 states and 31143 transitions. [2018-07-24 03:02:26,799 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-24 03:02:26,800 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 536 [2018-07-24 03:02:26,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 03:02:26,845 INFO L225 Difference]: With dead ends: 26712 [2018-07-24 03:02:26,845 INFO L226 Difference]: Without dead ends: 17569 [2018-07-24 03:02:26,857 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-24 03:02:26,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17569 states. [2018-07-24 03:02:27,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17569 to 12444. [2018-07-24 03:02:27,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12444 states. [2018-07-24 03:02:27,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12444 states to 12444 states and 14268 transitions. [2018-07-24 03:02:27,044 INFO L78 Accepts]: Start accepts. Automaton has 12444 states and 14268 transitions. Word has length 536 [2018-07-24 03:02:27,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 03:02:27,045 INFO L471 AbstractCegarLoop]: Abstraction has 12444 states and 14268 transitions. [2018-07-24 03:02:27,045 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 03:02:27,045 INFO L276 IsEmpty]: Start isEmpty. Operand 12444 states and 14268 transitions. [2018-07-24 03:02:27,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 590 [2018-07-24 03:02:27,067 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 03:02:27,067 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:02:27,068 INFO L414 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 03:02:27,068 INFO L82 PathProgramCache]: Analyzing trace with hash 755995652, now seen corresponding path program 1 times [2018-07-24 03:02:27,068 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 03:02:27,068 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 03:02:27,069 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:02:27,069 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 03:02:27,069 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:02:27,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 03:02:28,278 INFO L134 CoverageAnalysis]: Checked inductivity of 469 backedges. 0 proven. 89 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2018-07-24 03:02:28,278 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 03:02:28,278 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 03:02:28,287 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 03:02:28,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 03:02:28,475 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 03:02:28,765 WARN L169 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 17 [2018-07-24 03:02:29,068 INFO L134 CoverageAnalysis]: Checked inductivity of 469 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2018-07-24 03:02:29,102 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-24 03:02:29,102 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2018-07-24 03:02:29,103 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 03:02:29,104 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 03:02:29,104 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-07-24 03:02:29,104 INFO L87 Difference]: Start difference. First operand 12444 states and 14268 transitions. Second operand 5 states. [2018-07-24 03:02:44,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 03:02:44,600 INFO L93 Difference]: Finished difference Result 36675 states and 42516 transitions. [2018-07-24 03:02:44,601 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-24 03:02:44,601 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 589 [2018-07-24 03:02:44,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 03:02:44,643 INFO L225 Difference]: With dead ends: 36675 [2018-07-24 03:02:44,644 INFO L226 Difference]: Without dead ends: 24233 [2018-07-24 03:02:44,660 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 592 GetRequests, 588 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-07-24 03:02:44,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24233 states. [2018-07-24 03:02:44,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24233 to 19374. [2018-07-24 03:02:44,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19374 states. [2018-07-24 03:02:44,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19374 states to 19374 states and 21696 transitions. [2018-07-24 03:02:44,956 INFO L78 Accepts]: Start accepts. Automaton has 19374 states and 21696 transitions. Word has length 589 [2018-07-24 03:02:44,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 03:02:44,957 INFO L471 AbstractCegarLoop]: Abstraction has 19374 states and 21696 transitions. [2018-07-24 03:02:44,957 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 03:02:44,957 INFO L276 IsEmpty]: Start isEmpty. Operand 19374 states and 21696 transitions. [2018-07-24 03:02:44,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 634 [2018-07-24 03:02:44,977 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 03:02:44,977 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, 4, 4, 4, 4, 4, 4, 4, 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] [2018-07-24 03:02:44,978 INFO L414 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 03:02:44,978 INFO L82 PathProgramCache]: Analyzing trace with hash 1137692780, now seen corresponding path program 1 times [2018-07-24 03:02:44,978 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 03:02:44,978 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 03:02:44,979 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:02:44,979 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 03:02:44,980 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:02:45,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 03:02:45,469 INFO L134 CoverageAnalysis]: Checked inductivity of 746 backedges. 379 proven. 0 refuted. 0 times theorem prover too weak. 367 trivial. 0 not checked. [2018-07-24 03:02:45,470 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 03:02:45,470 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 03:02:45,470 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 03:02:45,471 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 03:02:45,471 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 03:02:45,471 INFO L87 Difference]: Start difference. First operand 19374 states and 21696 transitions. Second operand 3 states. [2018-07-24 03:02:49,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 03:02:49,216 INFO L93 Difference]: Finished difference Result 34213 states and 38620 transitions. [2018-07-24 03:02:49,216 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 03:02:49,216 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 633 [2018-07-24 03:02:49,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 03:02:49,248 INFO L225 Difference]: With dead ends: 34213 [2018-07-24 03:02:49,249 INFO L226 Difference]: Without dead ends: 19372 [2018-07-24 03:02:49,265 INFO L573 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 [2018-07-24 03:02:49,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19372 states. [2018-07-24 03:02:49,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19372 to 19372. [2018-07-24 03:02:49,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19372 states. [2018-07-24 03:02:49,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19372 states to 19372 states and 21692 transitions. [2018-07-24 03:02:49,719 INFO L78 Accepts]: Start accepts. Automaton has 19372 states and 21692 transitions. Word has length 633 [2018-07-24 03:02:49,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 03:02:49,720 INFO L471 AbstractCegarLoop]: Abstraction has 19372 states and 21692 transitions. [2018-07-24 03:02:49,720 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 03:02:49,720 INFO L276 IsEmpty]: Start isEmpty. Operand 19372 states and 21692 transitions. [2018-07-24 03:02:49,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 666 [2018-07-24 03:02:49,743 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 03:02:49,744 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, 5, 5, 5, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:02:49,744 INFO L414 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 03:02:49,744 INFO L82 PathProgramCache]: Analyzing trace with hash -118999510, now seen corresponding path program 1 times [2018-07-24 03:02:49,744 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 03:02:49,745 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 03:02:49,745 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:02:49,746 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 03:02:49,746 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:02:49,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 03:02:50,210 INFO L134 CoverageAnalysis]: Checked inductivity of 995 backedges. 751 proven. 0 refuted. 0 times theorem prover too weak. 244 trivial. 0 not checked. [2018-07-24 03:02:50,211 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 03:02:50,211 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 03:02:50,212 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 03:02:50,212 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 03:02:50,212 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 03:02:50,212 INFO L87 Difference]: Start difference. First operand 19372 states and 21692 transitions. Second operand 4 states. [2018-07-24 03:02:53,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 03:02:53,544 INFO L93 Difference]: Finished difference Result 38447 states and 43091 transitions. [2018-07-24 03:02:53,544 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 03:02:53,544 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 665 [2018-07-24 03:02:53,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 03:02:53,569 INFO L225 Difference]: With dead ends: 38447 [2018-07-24 03:02:53,569 INFO L226 Difference]: Without dead ends: 19377 [2018-07-24 03:02:53,584 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 03:02:53,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19377 states. [2018-07-24 03:02:53,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19377 to 19366. [2018-07-24 03:02:53,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19366 states. [2018-07-24 03:02:53,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19366 states to 19366 states and 21254 transitions. [2018-07-24 03:02:53,820 INFO L78 Accepts]: Start accepts. Automaton has 19366 states and 21254 transitions. Word has length 665 [2018-07-24 03:02:53,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 03:02:53,821 INFO L471 AbstractCegarLoop]: Abstraction has 19366 states and 21254 transitions. [2018-07-24 03:02:53,821 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 03:02:53,821 INFO L276 IsEmpty]: Start isEmpty. Operand 19366 states and 21254 transitions. [2018-07-24 03:02:53,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 668 [2018-07-24 03:02:53,839 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 03:02:53,839 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:02:53,840 INFO L414 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 03:02:53,840 INFO L82 PathProgramCache]: Analyzing trace with hash -121863504, now seen corresponding path program 1 times [2018-07-24 03:02:53,840 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 03:02:53,843 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 03:02:53,844 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:02:53,844 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 03:02:53,844 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:02:53,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 03:02:54,648 INFO L134 CoverageAnalysis]: Checked inductivity of 731 backedges. 389 proven. 0 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked. [2018-07-24 03:02:54,649 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 03:02:54,649 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 03:02:54,649 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 03:02:54,650 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 03:02:54,650 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 03:02:54,650 INFO L87 Difference]: Start difference. First operand 19366 states and 21254 transitions. Second operand 4 states. [2018-07-24 03:02:57,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 03:02:57,999 INFO L93 Difference]: Finished difference Result 38430 states and 42204 transitions. [2018-07-24 03:02:57,999 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 03:02:57,999 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 667 [2018-07-24 03:02:58,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 03:02:58,017 INFO L225 Difference]: With dead ends: 38430 [2018-07-24 03:02:58,018 INFO L226 Difference]: Without dead ends: 19366 [2018-07-24 03:02:58,032 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 03:02:58,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19366 states. [2018-07-24 03:02:58,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19366 to 19366. [2018-07-24 03:02:58,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19366 states. [2018-07-24 03:02:58,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19366 states to 19366 states and 20798 transitions. [2018-07-24 03:02:58,256 INFO L78 Accepts]: Start accepts. Automaton has 19366 states and 20798 transitions. Word has length 667 [2018-07-24 03:02:58,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 03:02:58,257 INFO L471 AbstractCegarLoop]: Abstraction has 19366 states and 20798 transitions. [2018-07-24 03:02:58,257 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 03:02:58,257 INFO L276 IsEmpty]: Start isEmpty. Operand 19366 states and 20798 transitions. [2018-07-24 03:02:58,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 694 [2018-07-24 03:02:58,274 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 03:02:58,274 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 03:02:58,274 INFO L414 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 03:02:58,275 INFO L82 PathProgramCache]: Analyzing trace with hash -1460073806, now seen corresponding path program 1 times [2018-07-24 03:02:58,275 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 03:02:58,275 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 03:02:58,276 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:02:58,276 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 03:02:58,276 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:02:58,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 03:02:59,055 WARN L169 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 9 [2018-07-24 03:03:00,165 INFO L134 CoverageAnalysis]: Checked inductivity of 574 backedges. 437 proven. 30 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2018-07-24 03:03:00,165 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 03:03:00,165 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 03:03:00,172 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 03:03:00,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 03:03:00,403 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 03:03:00,977 WARN L169 SmtUtils]: Spent 412.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 24 [2018-07-24 03:03:01,268 WARN L169 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 16 [2018-07-24 03:03:02,393 INFO L134 CoverageAnalysis]: Checked inductivity of 574 backedges. 437 proven. 30 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2018-07-24 03:03:02,413 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-07-24 03:03:02,413 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 10 [2018-07-24 03:03:02,414 INFO L450 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-24 03:03:02,414 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-24 03:03:02,415 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2018-07-24 03:03:02,415 INFO L87 Difference]: Start difference. First operand 19366 states and 20798 transitions. Second operand 10 states. [2018-07-24 03:03:04,905 WARN L169 SmtUtils]: Spent 407.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 25 [2018-07-24 03:03:25,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 03:03:25,614 INFO L93 Difference]: Finished difference Result 73051 states and 78196 transitions. [2018-07-24 03:03:25,614 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-07-24 03:03:25,614 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 693 [2018-07-24 03:03:25,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 03:03:25,666 INFO L225 Difference]: With dead ends: 73051 [2018-07-24 03:03:25,666 INFO L226 Difference]: Without dead ends: 53987 [2018-07-24 03:03:25,682 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 722 GetRequests, 702 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2018-07-24 03:03:25,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53987 states. [2018-07-24 03:03:26,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53987 to 41560. [2018-07-24 03:03:26,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41560 states. [2018-07-24 03:03:26,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41560 states to 41560 states and 43623 transitions. [2018-07-24 03:03:26,211 INFO L78 Accepts]: Start accepts. Automaton has 41560 states and 43623 transitions. Word has length 693 [2018-07-24 03:03:26,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 03:03:26,212 INFO L471 AbstractCegarLoop]: Abstraction has 41560 states and 43623 transitions. [2018-07-24 03:03:26,212 INFO L472 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-24 03:03:26,212 INFO L276 IsEmpty]: Start isEmpty. Operand 41560 states and 43623 transitions. [2018-07-24 03:03:26,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 719 [2018-07-24 03:03:26,240 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 03:03:26,241 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:03:26,241 INFO L414 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 03:03:26,242 INFO L82 PathProgramCache]: Analyzing trace with hash 1763667938, now seen corresponding path program 1 times [2018-07-24 03:03:26,242 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 03:03:26,242 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 03:03:26,243 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:03:26,243 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 03:03:26,243 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:03:26,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 03:03:26,969 INFO L134 CoverageAnalysis]: Checked inductivity of 833 backedges. 461 proven. 30 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked. [2018-07-24 03:03:26,969 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 03:03:26,970 INFO L221 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/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 [2018-07-24 03:03:26,981 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 03:03:27,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 03:03:27,204 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 03:03:28,139 INFO L134 CoverageAnalysis]: Checked inductivity of 833 backedges. 507 proven. 137 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2018-07-24 03:03:28,159 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-07-24 03:03:28,160 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2018-07-24 03:03:28,161 INFO L450 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-24 03:03:28,161 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-24 03:03:28,161 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-07-24 03:03:28,161 INFO L87 Difference]: Start difference. First operand 41560 states and 43623 transitions. Second operand 7 states. [2018-07-24 03:03:42,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 03:03:42,926 INFO L93 Difference]: Finished difference Result 94881 states and 99601 transitions. [2018-07-24 03:03:42,928 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-07-24 03:03:42,929 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 718 [2018-07-24 03:03:42,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 03:03:42,980 INFO L225 Difference]: With dead ends: 94881 [2018-07-24 03:03:42,980 INFO L226 Difference]: Without dead ends: 55725 [2018-07-24 03:03:42,997 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 732 GetRequests, 721 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2018-07-24 03:03:43,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55725 states. [2018-07-24 03:03:43,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55725 to 51474. [2018-07-24 03:03:43,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51474 states. [2018-07-24 03:03:43,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51474 states to 51474 states and 53968 transitions. [2018-07-24 03:03:43,532 INFO L78 Accepts]: Start accepts. Automaton has 51474 states and 53968 transitions. Word has length 718 [2018-07-24 03:03:43,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 03:03:43,533 INFO L471 AbstractCegarLoop]: Abstraction has 51474 states and 53968 transitions. [2018-07-24 03:03:43,533 INFO L472 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-24 03:03:43,533 INFO L276 IsEmpty]: Start isEmpty. Operand 51474 states and 53968 transitions. [2018-07-24 03:03:43,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 733 [2018-07-24 03:03:43,549 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 03:03:43,550 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, 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, 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] [2018-07-24 03:03:43,550 INFO L414 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 03:03:43,551 INFO L82 PathProgramCache]: Analyzing trace with hash 1245242481, now seen corresponding path program 1 times [2018-07-24 03:03:43,551 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 03:03:43,551 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 03:03:43,551 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:03:43,552 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 03:03:43,552 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:03:43,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 03:03:44,213 WARN L169 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-07-24 03:03:45,181 INFO L134 CoverageAnalysis]: Checked inductivity of 911 backedges. 594 proven. 107 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2018-07-24 03:03:45,181 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 03:03:45,182 INFO L221 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 03:03:45,190 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 03:03:45,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 03:03:45,438 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 03:03:46,667 INFO L134 CoverageAnalysis]: Checked inductivity of 911 backedges. 526 proven. 0 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2018-07-24 03:03:46,688 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-24 03:03:46,688 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 11 [2018-07-24 03:03:46,689 INFO L450 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-24 03:03:46,690 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-24 03:03:46,690 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2018-07-24 03:03:46,690 INFO L87 Difference]: Start difference. First operand 51474 states and 53968 transitions. Second operand 11 states. [2018-07-24 03:04:43,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 03:04:43,606 INFO L93 Difference]: Finished difference Result 112576 states and 118099 transitions. [2018-07-24 03:04:43,606 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-07-24 03:04:43,606 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 732 [2018-07-24 03:04:43,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 03:04:43,659 INFO L225 Difference]: With dead ends: 112576 [2018-07-24 03:04:43,659 INFO L226 Difference]: Without dead ends: 55086 [2018-07-24 03:04:43,688 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 747 GetRequests, 733 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2018-07-24 03:04:43,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55086 states. [2018-07-24 03:04:44,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55086 to 51473. [2018-07-24 03:04:44,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51473 states. [2018-07-24 03:04:44,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51473 states to 51473 states and 53686 transitions. [2018-07-24 03:04:44,446 INFO L78 Accepts]: Start accepts. Automaton has 51473 states and 53686 transitions. Word has length 732 [2018-07-24 03:04:44,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 03:04:44,446 INFO L471 AbstractCegarLoop]: Abstraction has 51473 states and 53686 transitions. [2018-07-24 03:04:44,446 INFO L472 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-24 03:04:44,446 INFO L276 IsEmpty]: Start isEmpty. Operand 51473 states and 53686 transitions. [2018-07-24 03:04:44,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 820 [2018-07-24 03:04:44,462 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 03:04:44,463 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, 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, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:04:44,463 INFO L414 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 03:04:44,464 INFO L82 PathProgramCache]: Analyzing trace with hash -1547250446, now seen corresponding path program 1 times [2018-07-24 03:04:44,464 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 03:04:44,464 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 03:04:44,465 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:04:44,465 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 03:04:44,465 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:04:44,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 03:04:45,165 INFO L134 CoverageAnalysis]: Checked inductivity of 1330 backedges. 963 proven. 0 refuted. 0 times theorem prover too weak. 367 trivial. 0 not checked. [2018-07-24 03:04:45,165 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 03:04:45,166 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-24 03:04:45,166 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 03:04:45,166 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 03:04:45,166 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-24 03:04:45,167 INFO L87 Difference]: Start difference. First operand 51473 states and 53686 transitions. Second operand 5 states. [2018-07-24 03:04:50,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 03:04:50,992 INFO L93 Difference]: Finished difference Result 95099 states and 99221 transitions. [2018-07-24 03:04:50,992 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-24 03:04:50,992 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 819 [2018-07-24 03:04:50,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 03:04:51,010 INFO L225 Difference]: With dead ends: 95099 [2018-07-24 03:04:51,010 INFO L226 Difference]: Without dead ends: 20153 [2018-07-24 03:04:51,035 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 03:04:51,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20153 states. [2018-07-24 03:04:51,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20153 to 12945. [2018-07-24 03:04:51,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12945 states. [2018-07-24 03:04:51,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12945 states to 12945 states and 13252 transitions. [2018-07-24 03:04:51,184 INFO L78 Accepts]: Start accepts. Automaton has 12945 states and 13252 transitions. Word has length 819 [2018-07-24 03:04:51,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 03:04:51,185 INFO L471 AbstractCegarLoop]: Abstraction has 12945 states and 13252 transitions. [2018-07-24 03:04:51,185 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 03:04:51,185 INFO L276 IsEmpty]: Start isEmpty. Operand 12945 states and 13252 transitions. [2018-07-24 03:04:51,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1014 [2018-07-24 03:04:51,200 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 03:04:51,201 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 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] [2018-07-24 03:04:51,201 INFO L414 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 03:04:51,201 INFO L82 PathProgramCache]: Analyzing trace with hash 1572463611, now seen corresponding path program 1 times [2018-07-24 03:04:51,201 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 03:04:51,202 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 03:04:51,202 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:04:51,202 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 03:04:51,202 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:04:51,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 03:04:53,838 INFO L134 CoverageAnalysis]: Checked inductivity of 1464 backedges. 30 proven. 798 refuted. 0 times theorem prover too weak. 636 trivial. 0 not checked. [2018-07-24 03:04:53,838 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 03:04:53,838 INFO L221 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 03:04:53,845 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 03:04:54,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 03:04:54,174 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 03:04:55,415 INFO L134 CoverageAnalysis]: Checked inductivity of 1464 backedges. 119 proven. 709 refuted. 0 times theorem prover too weak. 636 trivial. 0 not checked. [2018-07-24 03:04:55,436 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-07-24 03:04:55,436 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 6 [2018-07-24 03:04:55,437 INFO L450 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-24 03:04:55,437 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-24 03:04:55,437 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2018-07-24 03:04:55,438 INFO L87 Difference]: Start difference. First operand 12945 states and 13252 transitions. Second operand 7 states. [2018-07-24 03:05:00,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 03:05:00,316 INFO L93 Difference]: Finished difference Result 22871 states and 23411 transitions. [2018-07-24 03:05:00,316 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 03:05:00,316 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1013 [2018-07-24 03:05:00,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 03:05:00,334 INFO L225 Difference]: With dead ends: 22871 [2018-07-24 03:05:00,334 INFO L226 Difference]: Without dead ends: 22869 [2018-07-24 03:05:00,340 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1017 GetRequests, 1011 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2018-07-24 03:05:00,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22869 states. [2018-07-24 03:05:00,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22869 to 18351. [2018-07-24 03:05:00,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18351 states. [2018-07-24 03:05:00,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18351 states to 18351 states and 18799 transitions. [2018-07-24 03:05:00,539 INFO L78 Accepts]: Start accepts. Automaton has 18351 states and 18799 transitions. Word has length 1013 [2018-07-24 03:05:00,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 03:05:00,540 INFO L471 AbstractCegarLoop]: Abstraction has 18351 states and 18799 transitions. [2018-07-24 03:05:00,540 INFO L472 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-24 03:05:00,540 INFO L276 IsEmpty]: Start isEmpty. Operand 18351 states and 18799 transitions. [2018-07-24 03:05:00,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2012 [2018-07-24 03:05:00,577 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 03:05:00,578 INFO L353 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 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, 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 03:05:00,578 INFO L414 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 03:05:00,579 INFO L82 PathProgramCache]: Analyzing trace with hash -1470930620, now seen corresponding path program 1 times [2018-07-24 03:05:00,579 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 03:05:00,579 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 03:05:00,580 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:05:00,580 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 03:05:00,580 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:05:00,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 03:05:04,653 INFO L134 CoverageAnalysis]: Checked inductivity of 6806 backedges. 3747 proven. 1331 refuted. 0 times theorem prover too weak. 1728 trivial. 0 not checked. [2018-07-24 03:05:04,654 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 03:05:04,654 INFO L221 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 03:05:04,661 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 03:05:05,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 03:05:05,276 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 03:05:07,035 INFO L134 CoverageAnalysis]: Checked inductivity of 6806 backedges. 3283 proven. 0 refuted. 0 times theorem prover too weak. 3523 trivial. 0 not checked. [2018-07-24 03:05:07,058 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-24 03:05:07,059 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2018-07-24 03:05:07,061 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 03:05:07,061 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 03:05:07,061 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-24 03:05:07,061 INFO L87 Difference]: Start difference. First operand 18351 states and 18799 transitions. Second operand 5 states. [2018-07-24 03:05:09,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 03:05:09,178 INFO L93 Difference]: Finished difference Result 36402 states and 37293 transitions. [2018-07-24 03:05:09,179 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 03:05:09,179 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 2011 [2018-07-24 03:05:09,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 03:05:09,194 INFO L225 Difference]: With dead ends: 36402 [2018-07-24 03:05:09,194 INFO L226 Difference]: Without dead ends: 18653 [2018-07-24 03:05:09,204 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 2019 GetRequests, 2013 SyntacticMatches, 3 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-24 03:05:09,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18653 states. [2018-07-24 03:05:09,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18653 to 18050. [2018-07-24 03:05:09,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18050 states. [2018-07-24 03:05:09,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18050 states to 18050 states and 18368 transitions. [2018-07-24 03:05:09,391 INFO L78 Accepts]: Start accepts. Automaton has 18050 states and 18368 transitions. Word has length 2011 [2018-07-24 03:05:09,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 03:05:09,392 INFO L471 AbstractCegarLoop]: Abstraction has 18050 states and 18368 transitions. [2018-07-24 03:05:09,392 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 03:05:09,392 INFO L276 IsEmpty]: Start isEmpty. Operand 18050 states and 18368 transitions. [2018-07-24 03:05:09,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2296 [2018-07-24 03:05:09,426 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 03:05:09,427 INFO L353 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 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, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 03:05:09,427 INFO L414 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 03:05:09,428 INFO L82 PathProgramCache]: Analyzing trace with hash -1192242673, now seen corresponding path program 1 times [2018-07-24 03:05:09,428 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 03:05:09,428 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 03:05:09,429 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:05:09,429 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 03:05:09,429 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:05:09,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 03:05:13,780 INFO L134 CoverageAnalysis]: Checked inductivity of 9332 backedges. 5853 proven. 0 refuted. 0 times theorem prover too weak. 3479 trivial. 0 not checked. [2018-07-24 03:05:13,781 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 03:05:13,781 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 03:05:13,782 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 03:05:13,782 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 03:05:13,782 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 03:05:13,783 INFO L87 Difference]: Start difference. First operand 18050 states and 18368 transitions. Second operand 4 states. Received shutdown request... [2018-07-24 03:05:14,350 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 03:05:14,350 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-24 03:05:14,357 WARN L202 ceAbstractionStarter]: Timeout [2018-07-24 03:05:14,357 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.07 03:05:14 BoogieIcfgContainer [2018-07-24 03:05:14,357 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-24 03:05:14,358 INFO L168 Benchmark]: Toolchain (without parser) took 241355.28 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 1.6 GB in the end (delta: -187.0 MB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. [2018-07-24 03:05:14,359 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-24 03:05:14,360 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1319.13 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 116.3 MB). Peak memory consumption was 116.3 MB. Max. memory is 7.1 GB. [2018-07-24 03:05:14,361 INFO L168 Benchmark]: Boogie Procedure Inliner took 304.64 ms. Allocated memory is still 1.5 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-07-24 03:05:14,361 INFO L168 Benchmark]: Boogie Preprocessor took 599.74 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 881.3 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -1.0 GB). Peak memory consumption was 92.5 MB. Max. memory is 7.1 GB. [2018-07-24 03:05:14,362 INFO L168 Benchmark]: RCFGBuilder took 6721.76 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.0 GB in the end (delta: 327.1 MB). Peak memory consumption was 327.1 MB. Max. memory is 7.1 GB. [2018-07-24 03:05:14,363 INFO L168 Benchmark]: TraceAbstraction took 232405.76 ms. Allocated memory was 2.4 GB in the beginning and 4.1 GB in the end (delta: 1.7 GB). Free memory was 2.0 GB in the beginning and 1.6 GB in the end (delta: 369.1 MB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. [2018-07-24 03:05:14,368 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1319.13 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 116.3 MB). Peak memory consumption was 116.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 304.64 ms. Allocated memory is still 1.5 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 599.74 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 881.3 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -1.0 GB). Peak memory consumption was 92.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 6721.76 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.0 GB in the end (delta: 327.1 MB). Peak memory consumption was 327.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 232405.76 ms. Allocated memory was 2.4 GB in the beginning and 4.1 GB in the end (delta: 1.7 GB). Free memory was 2.0 GB in the beginning and 1.6 GB in the end (delta: 369.1 MB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 100]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 100). Cancelled while BasicCegarLoop was constructing difference of abstraction (18050states) and interpolant automaton (currently 3 states, 4 states before enhancement), while ReachableStatesComputation was computing reachable states (511 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 425 locations, 1 error locations. TIMEOUT Result, 232.3s OverallTime, 18 OverallIterations, 12 TraceHistogramMax, 192.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 4592 SDtfs, 22044 SDslu, 3523 SDs, 0 SdLazy, 58102 SolverSat, 7266 SolverUnsat, 24 SolverUnknown, 0 SolverNotchecked, 173.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6685 GetRequests, 6581 SyntacticMatches, 19 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 6.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=51474occurred in iteration=13, 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: 4.3s AutomataMinimizationTime, 17 MinimizatonAttempts, 46895 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.6s SsaConstructionTime, 3.0s SatisfiabilityAnalysisTime, 20.2s InterpolantComputationTime, 19561 NumberOfCodeBlocks, 19561 NumberOfCodeBlocksAsserted, 26 NumberOfCheckSat, 19535 ConstructedInterpolants, 359 QuantifiedInterpolants, 64212641 SizeOfPredicates, 9 NumberOfNonLiveVariables, 7623 ConjunctsInSsa, 31 ConjunctsInUnsatCore, 26 InterpolantComputations, 15 PerfectInterpolantSequences, 34658/37927 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/Problem15_label04_true-unreach-call.c_svcomp-Reach-64bit-Automizer_Default.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-24_03-05-14-382.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem15_label04_true-unreach-call.c_svcomp-Reach-64bit-Automizer_Default.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-24_03-05-14-382.csv Completed graceful shutdown