java -Xss4m -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label20_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-71425fa [2018-07-22 06:21:12,106 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-22 06:21:12,108 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-22 06:21:12,125 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-22 06:21:12,126 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-22 06:21:12,127 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-22 06:21:12,128 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-22 06:21:12,137 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-22 06:21:12,139 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-22 06:21:12,141 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-22 06:21:12,142 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-22 06:21:12,143 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-22 06:21:12,143 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-22 06:21:12,146 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-22 06:21:12,147 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-22 06:21:12,148 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-22 06:21:12,149 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-22 06:21:12,151 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-22 06:21:12,153 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-22 06:21:12,154 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-22 06:21:12,155 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-22 06:21:12,156 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-22 06:21:12,159 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-22 06:21:12,159 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-22 06:21:12,159 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-22 06:21:12,160 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-22 06:21:12,161 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-22 06:21:12,162 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-22 06:21:12,162 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-22 06:21:12,163 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-22 06:21:12,164 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-22 06:21:12,164 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-07-22 06:21:12,167 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-07-22 06:21:12,185 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-22 06:21:12,185 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-22 06:21:12,186 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-22 06:21:12,186 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-07-22 06:21:12,187 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-07-22 06:21:12,187 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-07-22 06:21:12,187 INFO L133 SettingsManager]: * Use SBE=true [2018-07-22 06:21:12,188 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-22 06:21:12,188 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-22 06:21:12,188 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-22 06:21:12,188 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-22 06:21:12,188 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-22 06:21:12,189 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-22 06:21:12,189 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-22 06:21:12,189 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-22 06:21:12,189 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-22 06:21:12,189 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-22 06:21:12,190 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-22 06:21:12,190 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-22 06:21:12,190 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-22 06:21:12,190 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-22 06:21:12,190 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-07-22 06:21:12,191 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-22 06:21:12,191 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-22 06:21:12,191 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-07-22 06:21:12,191 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-22 06:21:12,191 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-22 06:21:12,192 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-22 06:21:12,192 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-22 06:21:12,263 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-22 06:21:12,282 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-22 06:21:12,289 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-22 06:21:12,291 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-22 06:21:12,291 INFO L276 PluginConnector]: CDTParser initialized [2018-07-22 06:21:12,293 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label20_true-unreach-call.c [2018-07-22 06:21:12,699 INFO L220 CDTParser]: Created temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/d9395644b/d038d6e28619423c96aaa85950932e60/FLAG77aa97040 [2018-07-22 06:21:13,087 INFO L276 CDTParser]: Found 1 translation units. [2018-07-22 06:21:13,088 INFO L158 CDTParser]: Scanning /storage/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label20_true-unreach-call.c [2018-07-22 06:21:13,130 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/d9395644b/d038d6e28619423c96aaa85950932e60/FLAG77aa97040 [2018-07-22 06:21:13,153 INFO L332 CDTParser]: Successfully deleted /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/d9395644b/d038d6e28619423c96aaa85950932e60 [2018-07-22 06:21:13,162 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-22 06:21:13,168 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-22 06:21:13,170 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-22 06:21:13,170 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-22 06:21:13,177 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-22 06:21:13,178 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 06:21:13" (1/1) ... [2018-07-22 06:21:13,181 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a16f28c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:21:13, skipping insertion in model container [2018-07-22 06:21:13,181 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 06:21:13" (1/1) ... [2018-07-22 06:21:13,414 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-22 06:21:13,966 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-22 06:21:13,982 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-22 06:21:14,566 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-22 06:21:14,644 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:21:14 WrapperNode [2018-07-22 06:21:14,645 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-22 06:21:14,646 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-22 06:21:14,648 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-22 06:21:14,648 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-22 06:21:14,659 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:21:14" (1/1) ... [2018-07-22 06:21:14,704 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:21:14" (1/1) ... [2018-07-22 06:21:14,812 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-22 06:21:14,813 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-22 06:21:14,813 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-22 06:21:14,813 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-22 06:21:14,824 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:21:14" (1/1) ... [2018-07-22 06:21:14,824 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:21:14" (1/1) ... [2018-07-22 06:21:14,833 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:21:14" (1/1) ... [2018-07-22 06:21:14,833 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:21:14" (1/1) ... [2018-07-22 06:21:14,896 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:21:14" (1/1) ... [2018-07-22 06:21:14,925 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:21:14" (1/1) ... [2018-07-22 06:21:14,945 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:21:14" (1/1) ... [2018-07-22 06:21:14,956 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-22 06:21:14,957 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-22 06:21:14,957 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-22 06:21:14,957 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-22 06:21:14,958 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:21:14" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-22 06:21:15,299 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-07-22 06:21:15,299 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-22 06:21:15,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-22 06:21:21,997 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-22 06:21:21,998 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 06:21:21 BoogieIcfgContainer [2018-07-22 06:21:21,998 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-22 06:21:21,999 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-22 06:21:22,000 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-22 06:21:22,003 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-22 06:21:22,003 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 06:21:13" (1/3) ... [2018-07-22 06:21:22,004 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4123e52b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 06:21:22, skipping insertion in model container [2018-07-22 06:21:22,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:21:14" (2/3) ... [2018-07-22 06:21:22,008 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4123e52b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 06:21:22, skipping insertion in model container [2018-07-22 06:21:22,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 06:21:21" (3/3) ... [2018-07-22 06:21:22,010 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label20_true-unreach-call.c [2018-07-22 06:21:22,018 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-22 06:21:22,027 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-22 06:21:22,076 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-22 06:21:22,077 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-22 06:21:22,077 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-22 06:21:22,077 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-22 06:21:22,077 INFO L376 AbstractCegarLoop]: Backedges is TWOTRACK [2018-07-22 06:21:22,077 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-22 06:21:22,078 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-22 06:21:22,078 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-22 06:21:22,078 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-22 06:21:22,104 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states. [2018-07-22 06:21:22,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2018-07-22 06:21:22,123 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 06:21:22,127 INFO L358 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 06:21:22,128 INFO L414 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 06:21:22,133 INFO L82 PathProgramCache]: Analyzing trace with hash -2132905468, now seen corresponding path program 1 times [2018-07-22 06:21:22,134 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 06:21:22,135 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 06:21:22,186 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 06:21:22,186 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 06:21:22,187 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 06:21:22,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 06:21:23,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-22 06:21:23,206 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 06:21:23,207 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-22 06:21:23,212 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 06:21:23,260 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 06:21:23,260 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 06:21:23,262 INFO L87 Difference]: Start difference. First operand 303 states. Second operand 4 states. [2018-07-22 06:21:26,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 06:21:26,339 INFO L93 Difference]: Finished difference Result 1027 states and 1865 transitions. [2018-07-22 06:21:26,339 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 06:21:26,340 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 196 [2018-07-22 06:21:26,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 06:21:26,364 INFO L225 Difference]: With dead ends: 1027 [2018-07-22 06:21:26,364 INFO L226 Difference]: Without dead ends: 717 [2018-07-22 06:21:26,370 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 06:21:26,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 717 states. [2018-07-22 06:21:26,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 717 to 715. [2018-07-22 06:21:26,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 715 states. [2018-07-22 06:21:26,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 715 states to 715 states and 1145 transitions. [2018-07-22 06:21:26,460 INFO L78 Accepts]: Start accepts. Automaton has 715 states and 1145 transitions. Word has length 196 [2018-07-22 06:21:26,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 06:21:26,461 INFO L471 AbstractCegarLoop]: Abstraction has 715 states and 1145 transitions. [2018-07-22 06:21:26,462 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 06:21:26,462 INFO L276 IsEmpty]: Start isEmpty. Operand 715 states and 1145 transitions. [2018-07-22 06:21:26,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2018-07-22 06:21:26,470 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 06:21:26,470 INFO L358 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 06:21:26,471 INFO L414 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 06:21:26,471 INFO L82 PathProgramCache]: Analyzing trace with hash 481259907, now seen corresponding path program 1 times [2018-07-22 06:21:26,471 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 06:21:26,471 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 06:21:26,473 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 06:21:26,474 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 06:21:26,474 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 06:21:26,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 06:21:26,659 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-22 06:21:26,659 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 06:21:26,659 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-07-22 06:21:26,663 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-22 06:21:26,664 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-22 06:21:26,664 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-22 06:21:26,664 INFO L87 Difference]: Start difference. First operand 715 states and 1145 transitions. Second operand 3 states. [2018-07-22 06:21:28,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 06:21:28,236 INFO L93 Difference]: Finished difference Result 2058 states and 3347 transitions. [2018-07-22 06:21:28,236 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-22 06:21:28,236 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 205 [2018-07-22 06:21:28,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 06:21:28,244 INFO L225 Difference]: With dead ends: 2058 [2018-07-22 06:21:28,244 INFO L226 Difference]: Without dead ends: 1345 [2018-07-22 06:21:28,248 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-22 06:21:28,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1345 states. [2018-07-22 06:21:28,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1345 to 1331. [2018-07-22 06:21:28,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1331 states. [2018-07-22 06:21:28,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1331 states to 1331 states and 2076 transitions. [2018-07-22 06:21:28,316 INFO L78 Accepts]: Start accepts. Automaton has 1331 states and 2076 transitions. Word has length 205 [2018-07-22 06:21:28,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 06:21:28,316 INFO L471 AbstractCegarLoop]: Abstraction has 1331 states and 2076 transitions. [2018-07-22 06:21:28,316 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-22 06:21:28,317 INFO L276 IsEmpty]: Start isEmpty. Operand 1331 states and 2076 transitions. [2018-07-22 06:21:28,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2018-07-22 06:21:28,325 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 06:21:28,326 INFO L358 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 06:21:28,326 INFO L414 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 06:21:28,326 INFO L82 PathProgramCache]: Analyzing trace with hash 561737559, now seen corresponding path program 1 times [2018-07-22 06:21:28,326 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 06:21:28,326 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 06:21:28,327 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 06:21:28,327 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 06:21:28,328 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 06:21:28,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 06:21:28,738 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-07-22 06:21:28,739 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 06:21:28,739 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-22 06:21:28,740 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-22 06:21:28,740 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-22 06:21:28,740 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-22 06:21:28,740 INFO L87 Difference]: Start difference. First operand 1331 states and 2076 transitions. Second operand 3 states. [2018-07-22 06:21:30,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 06:21:30,433 INFO L93 Difference]: Finished difference Result 3901 states and 6135 transitions. [2018-07-22 06:21:30,433 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-22 06:21:30,433 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 213 [2018-07-22 06:21:30,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 06:21:30,447 INFO L225 Difference]: With dead ends: 3901 [2018-07-22 06:21:30,447 INFO L226 Difference]: Without dead ends: 2572 [2018-07-22 06:21:30,453 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-22 06:21:30,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2572 states. [2018-07-22 06:21:30,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2572 to 2558. [2018-07-22 06:21:30,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2558 states. [2018-07-22 06:21:30,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2558 states to 2558 states and 3854 transitions. [2018-07-22 06:21:30,540 INFO L78 Accepts]: Start accepts. Automaton has 2558 states and 3854 transitions. Word has length 213 [2018-07-22 06:21:30,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 06:21:30,541 INFO L471 AbstractCegarLoop]: Abstraction has 2558 states and 3854 transitions. [2018-07-22 06:21:30,541 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-22 06:21:30,542 INFO L276 IsEmpty]: Start isEmpty. Operand 2558 states and 3854 transitions. [2018-07-22 06:21:30,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2018-07-22 06:21:30,551 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 06:21:30,551 INFO L358 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 06:21:30,551 INFO L414 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 06:21:30,552 INFO L82 PathProgramCache]: Analyzing trace with hash -349197708, now seen corresponding path program 1 times [2018-07-22 06:21:30,552 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 06:21:30,552 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 06:21:30,553 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 06:21:30,553 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 06:21:30,554 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 06:21:30,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 06:21:30,769 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2018-07-22 06:21:30,769 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 06:21:30,769 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-07-22 06:21:30,771 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-22 06:21:30,771 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-22 06:21:30,771 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-22 06:21:30,771 INFO L87 Difference]: Start difference. First operand 2558 states and 3854 transitions. Second operand 3 states. [2018-07-22 06:21:31,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 06:21:31,400 INFO L93 Difference]: Finished difference Result 5091 states and 7675 transitions. [2018-07-22 06:21:31,420 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-22 06:21:31,420 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 227 [2018-07-22 06:21:31,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 06:21:31,432 INFO L225 Difference]: With dead ends: 5091 [2018-07-22 06:21:31,433 INFO L226 Difference]: Without dead ends: 2535 [2018-07-22 06:21:31,437 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-22 06:21:31,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2535 states. [2018-07-22 06:21:31,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2535 to 2535. [2018-07-22 06:21:31,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2535 states. [2018-07-22 06:21:31,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2535 states to 2535 states and 3747 transitions. [2018-07-22 06:21:31,507 INFO L78 Accepts]: Start accepts. Automaton has 2535 states and 3747 transitions. Word has length 227 [2018-07-22 06:21:31,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 06:21:31,508 INFO L471 AbstractCegarLoop]: Abstraction has 2535 states and 3747 transitions. [2018-07-22 06:21:31,508 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-22 06:21:31,508 INFO L276 IsEmpty]: Start isEmpty. Operand 2535 states and 3747 transitions. [2018-07-22 06:21:31,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2018-07-22 06:21:31,515 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 06:21:31,515 INFO L358 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 06:21:31,516 INFO L414 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 06:21:31,516 INFO L82 PathProgramCache]: Analyzing trace with hash -1360130552, now seen corresponding path program 1 times [2018-07-22 06:21:31,516 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 06:21:31,516 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 06:21:31,517 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 06:21:31,517 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 06:21:31,517 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 06:21:31,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 06:21:31,703 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-07-22 06:21:31,704 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 06:21:31,704 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-22 06:21:31,704 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-22 06:21:31,704 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-22 06:21:31,705 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-22 06:21:31,705 INFO L87 Difference]: Start difference. First operand 2535 states and 3747 transitions. Second operand 3 states. [2018-07-22 06:21:34,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 06:21:34,690 INFO L93 Difference]: Finished difference Result 7314 states and 10763 transitions. [2018-07-22 06:21:34,690 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-22 06:21:34,691 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 248 [2018-07-22 06:21:34,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 06:21:34,708 INFO L225 Difference]: With dead ends: 7314 [2018-07-22 06:21:34,708 INFO L226 Difference]: Without dead ends: 4781 [2018-07-22 06:21:34,712 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-22 06:21:34,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4781 states. [2018-07-22 06:21:34,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4781 to 4778. [2018-07-22 06:21:34,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4778 states. [2018-07-22 06:21:34,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4778 states to 4778 states and 6617 transitions. [2018-07-22 06:21:34,829 INFO L78 Accepts]: Start accepts. Automaton has 4778 states and 6617 transitions. Word has length 248 [2018-07-22 06:21:34,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 06:21:34,829 INFO L471 AbstractCegarLoop]: Abstraction has 4778 states and 6617 transitions. [2018-07-22 06:21:34,829 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-22 06:21:34,829 INFO L276 IsEmpty]: Start isEmpty. Operand 4778 states and 6617 transitions. [2018-07-22 06:21:34,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2018-07-22 06:21:34,843 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 06:21:34,844 INFO L358 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-22 06:21:34,844 INFO L414 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 06:21:34,844 INFO L82 PathProgramCache]: Analyzing trace with hash 609217826, now seen corresponding path program 1 times [2018-07-22 06:21:34,844 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 06:21:34,844 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 06:21:34,847 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 06:21:34,847 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 06:21:34,847 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 06:21:34,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 06:21:35,215 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-22 06:21:35,215 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 06:21:35,215 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-22 06:21:35,216 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 06:21:35,216 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 06:21:35,216 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 06:21:35,216 INFO L87 Difference]: Start difference. First operand 4778 states and 6617 transitions. Second operand 4 states. [2018-07-22 06:21:37,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 06:21:37,119 INFO L93 Difference]: Finished difference Result 9557 states and 13238 transitions. [2018-07-22 06:21:37,142 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-22 06:21:37,143 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 251 [2018-07-22 06:21:37,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 06:21:37,156 INFO L225 Difference]: With dead ends: 9557 [2018-07-22 06:21:37,156 INFO L226 Difference]: Without dead ends: 4781 [2018-07-22 06:21:37,161 INFO L578 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 [2018-07-22 06:21:37,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4781 states. [2018-07-22 06:21:37,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4781 to 4778. [2018-07-22 06:21:37,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4778 states. [2018-07-22 06:21:37,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4778 states to 4778 states and 6262 transitions. [2018-07-22 06:21:37,253 INFO L78 Accepts]: Start accepts. Automaton has 4778 states and 6262 transitions. Word has length 251 [2018-07-22 06:21:37,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 06:21:37,254 INFO L471 AbstractCegarLoop]: Abstraction has 4778 states and 6262 transitions. [2018-07-22 06:21:37,254 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 06:21:37,254 INFO L276 IsEmpty]: Start isEmpty. Operand 4778 states and 6262 transitions. [2018-07-22 06:21:37,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2018-07-22 06:21:37,266 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 06:21:37,266 INFO L358 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-07-22 06:21:37,266 INFO L414 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 06:21:37,267 INFO L82 PathProgramCache]: Analyzing trace with hash 1120056181, now seen corresponding path program 1 times [2018-07-22 06:21:37,267 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 06:21:37,267 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 06:21:37,269 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 06:21:37,269 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 06:21:37,269 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 06:21:37,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 06:21:37,460 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2018-07-22 06:21:37,460 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 06:21:37,460 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-07-22 06:21:37,460 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-22 06:21:37,461 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-22 06:21:37,461 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-22 06:21:37,461 INFO L87 Difference]: Start difference. First operand 4778 states and 6262 transitions. Second operand 3 states. [2018-07-22 06:21:38,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 06:21:38,407 INFO L93 Difference]: Finished difference Result 12050 states and 15737 transitions. [2018-07-22 06:21:38,407 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-22 06:21:38,407 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 260 [2018-07-22 06:21:38,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 06:21:38,429 INFO L225 Difference]: With dead ends: 12050 [2018-07-22 06:21:38,429 INFO L226 Difference]: Without dead ends: 7274 [2018-07-22 06:21:38,434 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-22 06:21:38,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7274 states. [2018-07-22 06:21:38,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7274 to 7271. [2018-07-22 06:21:38,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7271 states. [2018-07-22 06:21:38,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7271 states to 7271 states and 9450 transitions. [2018-07-22 06:21:38,586 INFO L78 Accepts]: Start accepts. Automaton has 7271 states and 9450 transitions. Word has length 260 [2018-07-22 06:21:38,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 06:21:38,586 INFO L471 AbstractCegarLoop]: Abstraction has 7271 states and 9450 transitions. [2018-07-22 06:21:38,586 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-22 06:21:38,586 INFO L276 IsEmpty]: Start isEmpty. Operand 7271 states and 9450 transitions. [2018-07-22 06:21:38,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2018-07-22 06:21:38,615 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 06:21:38,615 INFO L358 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 06:21:38,616 INFO L414 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 06:21:38,616 INFO L82 PathProgramCache]: Analyzing trace with hash 1569666125, now seen corresponding path program 1 times [2018-07-22 06:21:38,616 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 06:21:38,616 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 06:21:38,617 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 06:21:38,617 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 06:21:38,617 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 06:21:38,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 06:21:38,756 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2018-07-22 06:21:38,756 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 06:21:38,757 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-22 06:21:38,757 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 06:21:38,757 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 06:21:38,757 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 06:21:38,758 INFO L87 Difference]: Start difference. First operand 7271 states and 9450 transitions. Second operand 4 states. [2018-07-22 06:21:40,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 06:21:40,461 INFO L93 Difference]: Finished difference Result 27658 states and 35846 transitions. [2018-07-22 06:21:40,462 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 06:21:40,462 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 264 [2018-07-22 06:21:40,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 06:21:40,531 INFO L225 Difference]: With dead ends: 27658 [2018-07-22 06:21:40,532 INFO L226 Difference]: Without dead ends: 20389 [2018-07-22 06:21:40,542 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 06:21:40,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20389 states. [2018-07-22 06:21:40,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20389 to 13799. [2018-07-22 06:21:40,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13799 states. [2018-07-22 06:21:40,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13799 states to 13799 states and 17206 transitions. [2018-07-22 06:21:40,797 INFO L78 Accepts]: Start accepts. Automaton has 13799 states and 17206 transitions. Word has length 264 [2018-07-22 06:21:40,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 06:21:40,798 INFO L471 AbstractCegarLoop]: Abstraction has 13799 states and 17206 transitions. [2018-07-22 06:21:40,798 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 06:21:40,798 INFO L276 IsEmpty]: Start isEmpty. Operand 13799 states and 17206 transitions. [2018-07-22 06:21:40,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2018-07-22 06:21:40,821 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 06:21:40,822 INFO L358 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 06:21:40,822 INFO L414 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 06:21:40,822 INFO L82 PathProgramCache]: Analyzing trace with hash 645576481, now seen corresponding path program 1 times [2018-07-22 06:21:40,822 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 06:21:40,822 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 06:21:40,823 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 06:21:40,823 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 06:21:40,823 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 06:21:40,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 06:21:41,069 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 75 proven. 4 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2018-07-22 06:21:41,069 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-22 06:21:41,069 INFO L219 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-22 06:21:41,078 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 06:21:41,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 06:21:41,268 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-22 06:21:41,556 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2018-07-22 06:21:41,578 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-22 06:21:41,578 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2018-07-22 06:21:41,584 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-22 06:21:41,584 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-22 06:21:41,585 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-07-22 06:21:41,585 INFO L87 Difference]: Start difference. First operand 13799 states and 17206 transitions. Second operand 6 states. [2018-07-22 06:21:41,733 WARN L169 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-07-22 06:21:48,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 06:21:48,235 INFO L93 Difference]: Finished difference Result 78879 states and 97891 transitions. [2018-07-22 06:21:48,236 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-07-22 06:21:48,236 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 268 [2018-07-22 06:21:48,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 06:21:48,349 INFO L225 Difference]: With dead ends: 78879 [2018-07-22 06:21:48,349 INFO L226 Difference]: Without dead ends: 65082 [2018-07-22 06:21:48,375 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 271 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2018-07-22 06:21:48,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65082 states. [2018-07-22 06:21:49,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65082 to 65060. [2018-07-22 06:21:49,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65060 states. [2018-07-22 06:21:49,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65060 states to 65060 states and 78079 transitions. [2018-07-22 06:21:49,790 INFO L78 Accepts]: Start accepts. Automaton has 65060 states and 78079 transitions. Word has length 268 [2018-07-22 06:21:49,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 06:21:49,791 INFO L471 AbstractCegarLoop]: Abstraction has 65060 states and 78079 transitions. [2018-07-22 06:21:49,791 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-22 06:21:49,791 INFO L276 IsEmpty]: Start isEmpty. Operand 65060 states and 78079 transitions. [2018-07-22 06:21:49,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2018-07-22 06:21:49,866 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 06:21:49,867 INFO L358 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 06:21:49,867 INFO L414 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 06:21:49,868 INFO L82 PathProgramCache]: Analyzing trace with hash 1698522505, now seen corresponding path program 1 times [2018-07-22 06:21:49,868 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 06:21:49,868 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 06:21:49,869 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 06:21:49,869 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 06:21:49,869 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 06:21:49,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 06:21:50,359 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 115 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-07-22 06:21:50,359 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 06:21:50,359 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-22 06:21:50,360 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 06:21:50,360 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 06:21:50,360 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 06:21:50,360 INFO L87 Difference]: Start difference. First operand 65060 states and 78079 transitions. Second operand 4 states. [2018-07-22 06:21:53,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 06:21:53,250 INFO L93 Difference]: Finished difference Result 129513 states and 155438 transitions. [2018-07-22 06:21:53,251 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 06:21:53,251 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 296 [2018-07-22 06:21:53,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 06:21:53,330 INFO L225 Difference]: With dead ends: 129513 [2018-07-22 06:21:53,330 INFO L226 Difference]: Without dead ends: 64455 [2018-07-22 06:21:53,383 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 06:21:53,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64455 states. [2018-07-22 06:21:54,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64455 to 64445. [2018-07-22 06:21:54,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64445 states. [2018-07-22 06:21:54,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64445 states to 64445 states and 73515 transitions. [2018-07-22 06:21:54,358 INFO L78 Accepts]: Start accepts. Automaton has 64445 states and 73515 transitions. Word has length 296 [2018-07-22 06:21:54,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 06:21:54,359 INFO L471 AbstractCegarLoop]: Abstraction has 64445 states and 73515 transitions. [2018-07-22 06:21:54,359 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 06:21:54,359 INFO L276 IsEmpty]: Start isEmpty. Operand 64445 states and 73515 transitions. [2018-07-22 06:21:54,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2018-07-22 06:21:54,379 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 06:21:54,379 INFO L358 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-22 06:21:54,380 INFO L414 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 06:21:54,380 INFO L82 PathProgramCache]: Analyzing trace with hash 579274490, now seen corresponding path program 1 times [2018-07-22 06:21:54,380 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 06:21:54,380 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 06:21:54,381 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 06:21:54,381 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 06:21:54,381 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 06:21:54,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 06:21:54,737 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 134 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2018-07-22 06:21:54,738 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 06:21:54,738 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-22 06:21:54,738 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 06:21:54,739 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 06:21:54,739 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 06:21:54,739 INFO L87 Difference]: Start difference. First operand 64445 states and 73515 transitions. Second operand 4 states. [2018-07-22 06:21:57,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 06:21:57,749 INFO L93 Difference]: Finished difference Result 187300 states and 213067 transitions. [2018-07-22 06:21:57,749 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 06:21:57,749 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 299 [2018-07-22 06:21:57,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 06:21:57,867 INFO L225 Difference]: With dead ends: 187300 [2018-07-22 06:21:57,867 INFO L226 Difference]: Without dead ends: 122855 [2018-07-22 06:21:57,905 INFO L578 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 [2018-07-22 06:21:57,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122855 states. [2018-07-22 06:21:59,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122855 to 122846. [2018-07-22 06:21:59,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122846 states. [2018-07-22 06:21:59,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122846 states to 122846 states and 137536 transitions. [2018-07-22 06:21:59,141 INFO L78 Accepts]: Start accepts. Automaton has 122846 states and 137536 transitions. Word has length 299 [2018-07-22 06:21:59,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 06:21:59,141 INFO L471 AbstractCegarLoop]: Abstraction has 122846 states and 137536 transitions. [2018-07-22 06:21:59,141 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 06:21:59,141 INFO L276 IsEmpty]: Start isEmpty. Operand 122846 states and 137536 transitions. [2018-07-22 06:21:59,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2018-07-22 06:21:59,188 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 06:21:59,188 INFO L358 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-22 06:21:59,189 INFO L414 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 06:21:59,190 INFO L82 PathProgramCache]: Analyzing trace with hash -496938572, now seen corresponding path program 1 times [2018-07-22 06:21:59,191 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 06:21:59,191 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 06:21:59,191 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 06:21:59,192 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 06:21:59,192 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 06:21:59,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 06:21:59,637 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 202 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2018-07-22 06:21:59,637 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 06:21:59,638 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-22 06:21:59,638 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 06:21:59,638 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 06:21:59,639 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 06:21:59,639 INFO L87 Difference]: Start difference. First operand 122846 states and 137536 transitions. Second operand 4 states. [2018-07-22 06:22:01,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 06:22:01,588 INFO L93 Difference]: Finished difference Result 244884 states and 274174 transitions. [2018-07-22 06:22:01,588 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 06:22:01,588 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 353 [2018-07-22 06:22:01,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 06:22:01,701 INFO L225 Difference]: With dead ends: 244884 [2018-07-22 06:22:01,702 INFO L226 Difference]: Without dead ends: 122040 [2018-07-22 06:22:01,750 INFO L578 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 [2018-07-22 06:22:01,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122040 states. [2018-07-22 06:22:03,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122040 to 122020. [2018-07-22 06:22:03,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122020 states. [2018-07-22 06:22:03,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122020 states to 122020 states and 134831 transitions. [2018-07-22 06:22:03,337 INFO L78 Accepts]: Start accepts. Automaton has 122020 states and 134831 transitions. Word has length 353 [2018-07-22 06:22:03,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 06:22:03,337 INFO L471 AbstractCegarLoop]: Abstraction has 122020 states and 134831 transitions. [2018-07-22 06:22:03,337 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 06:22:03,337 INFO L276 IsEmpty]: Start isEmpty. Operand 122020 states and 134831 transitions. [2018-07-22 06:22:03,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2018-07-22 06:22:03,367 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 06:22:03,368 INFO L358 BasicCegarLoop]: trace histogram [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, 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] [2018-07-22 06:22:03,368 INFO L414 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 06:22:03,368 INFO L82 PathProgramCache]: Analyzing trace with hash -2010373706, now seen corresponding path program 1 times [2018-07-22 06:22:03,368 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 06:22:03,368 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 06:22:03,369 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 06:22:03,369 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 06:22:03,369 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 06:22:03,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 06:22:03,789 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 154 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2018-07-22 06:22:03,789 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 06:22:03,789 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-22 06:22:03,790 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 06:22:03,790 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 06:22:03,790 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 06:22:03,790 INFO L87 Difference]: Start difference. First operand 122020 states and 134831 transitions. Second operand 4 states. [2018-07-22 06:22:06,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 06:22:06,253 INFO L93 Difference]: Finished difference Result 240381 states and 265772 transitions. [2018-07-22 06:22:06,254 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-22 06:22:06,254 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 362 [2018-07-22 06:22:06,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 06:22:09,243 INFO L225 Difference]: With dead ends: 240381 [2018-07-22 06:22:09,243 INFO L226 Difference]: Without dead ends: 118363 [2018-07-22 06:22:09,284 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 06:22:09,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118363 states. [2018-07-22 06:22:10,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118363 to 117914. [2018-07-22 06:22:10,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117914 states. [2018-07-22 06:22:10,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117914 states to 117914 states and 129594 transitions. [2018-07-22 06:22:10,294 INFO L78 Accepts]: Start accepts. Automaton has 117914 states and 129594 transitions. Word has length 362 [2018-07-22 06:22:10,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 06:22:10,294 INFO L471 AbstractCegarLoop]: Abstraction has 117914 states and 129594 transitions. [2018-07-22 06:22:10,294 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 06:22:10,294 INFO L276 IsEmpty]: Start isEmpty. Operand 117914 states and 129594 transitions. [2018-07-22 06:22:10,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2018-07-22 06:22:10,328 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 06:22:10,328 INFO L358 BasicCegarLoop]: trace histogram [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, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 06:22:10,329 INFO L414 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 06:22:10,329 INFO L82 PathProgramCache]: Analyzing trace with hash -1933816099, now seen corresponding path program 1 times [2018-07-22 06:22:10,329 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 06:22:10,329 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 06:22:10,330 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 06:22:10,330 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 06:22:10,330 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 06:22:10,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 06:22:10,886 WARN L169 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 7 [2018-07-22 06:22:11,418 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 162 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2018-07-22 06:22:11,418 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 06:22:11,418 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-22 06:22:11,419 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-22 06:22:11,419 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-22 06:22:11,419 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-22 06:22:11,419 INFO L87 Difference]: Start difference. First operand 117914 states and 129594 transitions. Second operand 5 states. [2018-07-22 06:22:13,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 06:22:13,695 INFO L93 Difference]: Finished difference Result 287141 states and 315861 transitions. [2018-07-22 06:22:13,696 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-22 06:22:13,696 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 376 [2018-07-22 06:22:13,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 06:22:13,856 INFO L225 Difference]: With dead ends: 287141 [2018-07-22 06:22:13,856 INFO L226 Difference]: Without dead ends: 169229 [2018-07-22 06:22:13,913 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-22 06:22:14,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169229 states. [2018-07-22 06:22:15,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169229 to 167554. [2018-07-22 06:22:15,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167554 states. [2018-07-22 06:22:15,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167554 states to 167554 states and 183869 transitions. [2018-07-22 06:22:15,864 INFO L78 Accepts]: Start accepts. Automaton has 167554 states and 183869 transitions. Word has length 376 [2018-07-22 06:22:15,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 06:22:15,865 INFO L471 AbstractCegarLoop]: Abstraction has 167554 states and 183869 transitions. [2018-07-22 06:22:15,865 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-22 06:22:15,865 INFO L276 IsEmpty]: Start isEmpty. Operand 167554 states and 183869 transitions. [2018-07-22 06:22:15,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2018-07-22 06:22:15,906 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 06:22:15,907 INFO L358 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 06:22:15,907 INFO L414 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 06:22:15,907 INFO L82 PathProgramCache]: Analyzing trace with hash 58329509, now seen corresponding path program 1 times [2018-07-22 06:22:15,907 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 06:22:15,907 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 06:22:15,908 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 06:22:15,908 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 06:22:15,908 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 06:22:15,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 06:22:16,210 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 192 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2018-07-22 06:22:16,210 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 06:22:16,210 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-22 06:22:16,210 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 06:22:16,211 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 06:22:16,211 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 06:22:16,211 INFO L87 Difference]: Start difference. First operand 167554 states and 183869 transitions. Second operand 4 states. [2018-07-22 06:22:18,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 06:22:18,599 INFO L93 Difference]: Finished difference Result 343924 states and 377650 transitions. [2018-07-22 06:22:18,600 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 06:22:18,600 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 383 [2018-07-22 06:22:18,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 06:22:18,764 INFO L225 Difference]: With dead ends: 343924 [2018-07-22 06:22:18,765 INFO L226 Difference]: Without dead ends: 176372 [2018-07-22 06:22:18,833 INFO L578 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 [2018-07-22 06:22:18,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176372 states. [2018-07-22 06:22:20,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176372 to 175531. [2018-07-22 06:22:20,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175531 states. [2018-07-22 06:22:21,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175531 states to 175531 states and 192086 transitions. [2018-07-22 06:22:21,052 INFO L78 Accepts]: Start accepts. Automaton has 175531 states and 192086 transitions. Word has length 383 [2018-07-22 06:22:21,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 06:22:21,053 INFO L471 AbstractCegarLoop]: Abstraction has 175531 states and 192086 transitions. [2018-07-22 06:22:21,053 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 06:22:21,053 INFO L276 IsEmpty]: Start isEmpty. Operand 175531 states and 192086 transitions. [2018-07-22 06:22:21,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2018-07-22 06:22:21,083 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 06:22:21,083 INFO L358 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 06:22:21,083 INFO L414 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 06:22:21,084 INFO L82 PathProgramCache]: Analyzing trace with hash 1008501425, now seen corresponding path program 1 times [2018-07-22 06:22:21,084 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 06:22:21,084 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 06:22:21,084 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 06:22:21,084 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 06:22:21,084 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 06:22:21,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 06:22:22,238 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 269 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2018-07-22 06:22:22,238 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 06:22:22,238 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-22 06:22:22,239 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-22 06:22:22,239 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-22 06:22:22,239 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-22 06:22:22,239 INFO L87 Difference]: Start difference. First operand 175531 states and 192086 transitions. Second operand 5 states. [2018-07-22 06:22:28,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 06:22:28,492 INFO L93 Difference]: Finished difference Result 492854 states and 538202 transitions. [2018-07-22 06:22:28,511 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-22 06:22:28,511 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 402 [2018-07-22 06:22:28,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 06:22:28,846 INFO L225 Difference]: With dead ends: 492854 [2018-07-22 06:22:28,846 INFO L226 Difference]: Without dead ends: 317325 [2018-07-22 06:22:28,921 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-22 06:22:29,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317325 states. [2018-07-22 06:22:32,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317325 to 313643. [2018-07-22 06:22:32,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 313643 states. [2018-07-22 06:22:32,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313643 states to 313643 states and 341998 transitions. [2018-07-22 06:22:32,466 INFO L78 Accepts]: Start accepts. Automaton has 313643 states and 341998 transitions. Word has length 402 [2018-07-22 06:22:32,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 06:22:32,466 INFO L471 AbstractCegarLoop]: Abstraction has 313643 states and 341998 transitions. [2018-07-22 06:22:32,466 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-22 06:22:32,467 INFO L276 IsEmpty]: Start isEmpty. Operand 313643 states and 341998 transitions. [2018-07-22 06:22:32,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2018-07-22 06:22:32,531 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 06:22:32,532 INFO L358 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-22 06:22:32,532 INFO L414 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 06:22:32,532 INFO L82 PathProgramCache]: Analyzing trace with hash -1852813034, now seen corresponding path program 1 times [2018-07-22 06:22:32,533 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 06:22:32,533 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 06:22:32,533 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 06:22:32,534 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 06:22:32,534 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 06:22:32,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 06:22:32,931 INFO L134 CoverageAnalysis]: Checked inductivity of 309 backedges. 219 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2018-07-22 06:22:32,932 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 06:22:32,932 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-22 06:22:32,932 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 06:22:32,932 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 06:22:32,932 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 06:22:32,933 INFO L87 Difference]: Start difference. First operand 313643 states and 341998 transitions. Second operand 4 states. [2018-07-22 06:22:43,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 06:22:43,420 INFO L93 Difference]: Finished difference Result 1110418 states and 1210379 transitions. [2018-07-22 06:22:43,420 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 06:22:43,420 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 411 [2018-07-22 06:22:43,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 06:22:44,442 INFO L225 Difference]: With dead ends: 1110418 [2018-07-22 06:22:44,442 INFO L226 Difference]: Without dead ends: 796981 [2018-07-22 06:22:44,565 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 06:22:45,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 796981 states. [2018-07-22 06:22:52,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 796981 to 520169. [2018-07-22 06:22:52,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 520169 states. [2018-07-22 06:22:53,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520169 states to 520169 states and 566526 transitions. [2018-07-22 06:22:53,256 INFO L78 Accepts]: Start accepts. Automaton has 520169 states and 566526 transitions. Word has length 411 [2018-07-22 06:22:53,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 06:22:53,256 INFO L471 AbstractCegarLoop]: Abstraction has 520169 states and 566526 transitions. [2018-07-22 06:22:53,256 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 06:22:53,256 INFO L276 IsEmpty]: Start isEmpty. Operand 520169 states and 566526 transitions. [2018-07-22 06:22:53,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2018-07-22 06:22:53,306 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 06:22:53,306 INFO L358 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-22 06:22:53,306 INFO L414 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 06:22:53,306 INFO L82 PathProgramCache]: Analyzing trace with hash -1565379093, now seen corresponding path program 1 times [2018-07-22 06:22:53,306 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 06:22:53,306 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 06:22:53,307 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 06:22:53,307 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 06:22:53,307 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 06:22:53,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 06:22:59,398 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 333 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2018-07-22 06:22:59,398 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 06:22:59,398 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-22 06:22:59,399 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-22 06:22:59,399 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-22 06:22:59,400 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-22 06:22:59,400 INFO L87 Difference]: Start difference. First operand 520169 states and 566526 transitions. Second operand 3 states. [2018-07-22 06:23:04,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 06:23:04,705 INFO L93 Difference]: Finished difference Result 1415752 states and 1541846 transitions. [2018-07-22 06:23:04,705 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-22 06:23:04,705 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 433 [2018-07-22 06:23:04,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 06:23:05,857 INFO L225 Difference]: With dead ends: 1415752 [2018-07-22 06:23:05,857 INFO L226 Difference]: Without dead ends: 895789 [2018-07-22 06:23:05,970 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-22 06:23:06,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 895789 states. [2018-07-22 06:23:25,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 895789 to 895763. [2018-07-22 06:23:25,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 895763 states. [2018-07-22 06:23:40,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 895763 states to 895763 states and 971071 transitions. [2018-07-22 06:23:40,141 INFO L78 Accepts]: Start accepts. Automaton has 895763 states and 971071 transitions. Word has length 433 [2018-07-22 06:23:40,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 06:23:40,168 INFO L471 AbstractCegarLoop]: Abstraction has 895763 states and 971071 transitions. [2018-07-22 06:23:40,168 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-22 06:23:40,168 INFO L276 IsEmpty]: Start isEmpty. Operand 895763 states and 971071 transitions. [2018-07-22 06:23:40,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 436 [2018-07-22 06:23:40,253 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 06:23:40,254 INFO L358 BasicCegarLoop]: trace histogram [5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-22 06:23:40,254 INFO L414 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 06:23:40,254 INFO L82 PathProgramCache]: Analyzing trace with hash -1075557713, now seen corresponding path program 1 times [2018-07-22 06:23:40,254 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 06:23:40,255 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 06:23:40,255 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 06:23:40,255 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 06:23:40,255 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 06:23:40,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 06:23:40,781 WARN L169 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-07-22 06:23:42,869 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 266 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-22 06:23:42,869 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-22 06:23:42,869 INFO L219 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-22 06:23:42,876 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 06:23:43,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 06:23:43,113 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-22 06:23:43,921 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 236 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2018-07-22 06:23:43,942 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-22 06:23:43,943 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 11 [2018-07-22 06:23:43,943 INFO L450 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-22 06:23:43,944 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-22 06:23:43,944 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-07-22 06:23:43,944 INFO L87 Difference]: Start difference. First operand 895763 states and 971071 transitions. Second operand 11 states.