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_label04_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-71425fa [2018-07-22 06:07:19,990 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-22 06:07:20,028 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-22 06:07:20,058 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-22 06:07:20,058 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-22 06:07:20,059 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-22 06:07:20,060 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-22 06:07:20,062 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-22 06:07:20,064 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-22 06:07:20,066 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-22 06:07:20,067 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-22 06:07:20,067 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-22 06:07:20,068 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-22 06:07:20,069 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-22 06:07:20,073 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-22 06:07:20,074 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-22 06:07:20,074 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-22 06:07:20,087 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-22 06:07:20,089 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-22 06:07:20,090 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-22 06:07:20,092 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-22 06:07:20,095 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-22 06:07:20,097 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-22 06:07:20,097 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-22 06:07:20,098 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-22 06:07:20,098 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-22 06:07:20,101 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-22 06:07:20,101 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-22 06:07:20,102 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-22 06:07:20,103 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-22 06:07:20,103 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-22 06:07:20,109 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-07-22 06:07:20,111 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 06:07:20,143 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-22 06:07:20,143 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-22 06:07:20,144 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-22 06:07:20,144 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-07-22 06:07:20,145 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-07-22 06:07:20,145 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-07-22 06:07:20,145 INFO L133 SettingsManager]: * Use SBE=true [2018-07-22 06:07:20,146 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-22 06:07:20,146 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-22 06:07:20,146 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-22 06:07:20,146 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-22 06:07:20,146 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-22 06:07:20,147 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-22 06:07:20,147 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-22 06:07:20,147 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-22 06:07:20,147 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-22 06:07:20,147 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-22 06:07:20,148 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-22 06:07:20,148 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-22 06:07:20,148 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-22 06:07:20,148 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-22 06:07:20,148 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-07-22 06:07:20,149 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-22 06:07:20,150 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-22 06:07:20,150 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-07-22 06:07:20,150 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-22 06:07:20,151 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-22 06:07:20,151 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-22 06:07:20,151 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-22 06:07:20,201 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-22 06:07:20,296 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-22 06:07:20,302 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-22 06:07:20,303 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-22 06:07:20,304 INFO L276 PluginConnector]: CDTParser initialized [2018-07-22 06:07:20,304 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label04_true-unreach-call.c [2018-07-22 06:07:21,220 INFO L220 CDTParser]: Created temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/7a8531a46/a2b877b168284889b9a97c290c7f9557/FLAGb5057cee1 [2018-07-22 06:07:21,727 INFO L276 CDTParser]: Found 1 translation units. [2018-07-22 06:07:21,728 INFO L158 CDTParser]: Scanning /storage/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label04_true-unreach-call.c [2018-07-22 06:07:21,873 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/7a8531a46/a2b877b168284889b9a97c290c7f9557/FLAGb5057cee1 [2018-07-22 06:07:21,890 INFO L332 CDTParser]: Successfully deleted /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/7a8531a46/a2b877b168284889b9a97c290c7f9557 [2018-07-22 06:07:21,938 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-22 06:07:21,969 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-22 06:07:21,970 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-22 06:07:21,970 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-22 06:07:22,012 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-22 06:07:22,013 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 06:07:21" (1/1) ... [2018-07-22 06:07:22,039 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1863061 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:07:22, skipping insertion in model container [2018-07-22 06:07:22,039 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 06:07:21" (1/1) ... [2018-07-22 06:07:22,414 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-22 06:07:22,958 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-22 06:07:22,982 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-22 06:07:23,394 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-22 06:07:23,483 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:07:23 WrapperNode [2018-07-22 06:07:23,483 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-22 06:07:23,484 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-22 06:07:23,484 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-22 06:07:23,484 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-22 06:07:23,496 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:07:23" (1/1) ... [2018-07-22 06:07:23,546 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:07:23" (1/1) ... [2018-07-22 06:07:23,658 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-22 06:07:23,659 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-22 06:07:23,659 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-22 06:07:23,659 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-22 06:07:23,670 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:07:23" (1/1) ... [2018-07-22 06:07:23,670 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:07:23" (1/1) ... [2018-07-22 06:07:23,678 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:07:23" (1/1) ... [2018-07-22 06:07:23,678 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:07:23" (1/1) ... [2018-07-22 06:07:23,743 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:07:23" (1/1) ... [2018-07-22 06:07:24,104 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:07:23" (1/1) ... [2018-07-22 06:07:24,131 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:07:23" (1/1) ... [2018-07-22 06:07:24,145 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-22 06:07:24,145 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-22 06:07:24,146 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-22 06:07:24,146 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-22 06:07:24,147 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:07:23" (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 06:07:24,302 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-07-22 06:07:24,302 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-22 06:07:24,302 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-22 06:07:29,759 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-22 06:07:29,760 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 06:07:29 BoogieIcfgContainer [2018-07-22 06:07:29,760 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-22 06:07:29,761 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-22 06:07:29,761 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-22 06:07:29,790 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-22 06:07:29,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 06:07:21" (1/3) ... [2018-07-22 06:07:29,791 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e62c329 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 06:07:29, skipping insertion in model container [2018-07-22 06:07:29,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:07:23" (2/3) ... [2018-07-22 06:07:29,792 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e62c329 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 06:07:29, skipping insertion in model container [2018-07-22 06:07:29,792 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 06:07:29" (3/3) ... [2018-07-22 06:07:29,794 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label04_true-unreach-call.c [2018-07-22 06:07:29,825 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-22 06:07:29,857 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-22 06:07:30,013 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-22 06:07:30,013 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-22 06:07:30,013 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-22 06:07:30,014 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-22 06:07:30,014 INFO L376 AbstractCegarLoop]: Backedges is TWOTRACK [2018-07-22 06:07:30,014 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-22 06:07:30,014 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-22 06:07:30,014 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-22 06:07:30,014 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-22 06:07:30,153 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states. [2018-07-22 06:07:30,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2018-07-22 06:07:30,170 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 06:07:30,171 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, 1, 1, 1] [2018-07-22 06:07:30,171 INFO L414 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 06:07:30,210 INFO L82 PathProgramCache]: Analyzing trace with hash -1635386790, now seen corresponding path program 1 times [2018-07-22 06:07:30,212 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 06:07:30,212 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 06:07:30,274 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 06:07:30,275 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 06:07:30,275 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 06:07:30,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 06:07:31,344 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 06:07:31,347 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 06:07:31,348 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-22 06:07:31,352 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 06:07:31,370 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 06:07:31,370 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 06:07:31,392 INFO L87 Difference]: Start difference. First operand 303 states. Second operand 4 states. [2018-07-22 06:07:34,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 06:07:34,306 INFO L93 Difference]: Finished difference Result 1072 states and 1917 transitions. [2018-07-22 06:07:34,306 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 06:07:34,327 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 199 [2018-07-22 06:07:34,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 06:07:34,366 INFO L225 Difference]: With dead ends: 1072 [2018-07-22 06:07:34,366 INFO L226 Difference]: Without dead ends: 762 [2018-07-22 06:07:34,371 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 06:07:34,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 762 states. [2018-07-22 06:07:34,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 762 to 518. [2018-07-22 06:07:34,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 518 states. [2018-07-22 06:07:34,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 855 transitions. [2018-07-22 06:07:34,518 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 855 transitions. Word has length 199 [2018-07-22 06:07:34,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 06:07:34,519 INFO L471 AbstractCegarLoop]: Abstraction has 518 states and 855 transitions. [2018-07-22 06:07:34,519 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 06:07:34,524 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 855 transitions. [2018-07-22 06:07:34,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2018-07-22 06:07:34,532 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 06:07:34,532 INFO L358 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 06:07:34,532 INFO L414 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 06:07:34,533 INFO L82 PathProgramCache]: Analyzing trace with hash -499975863, now seen corresponding path program 1 times [2018-07-22 06:07:34,533 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 06:07:34,533 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 06:07:34,534 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 06:07:34,534 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 06:07:34,534 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 06:07:34,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 06:07:34,673 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-22 06:07:34,673 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 06:07:34,673 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-07-22 06:07:34,675 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-22 06:07:34,676 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-22 06:07:34,676 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-22 06:07:34,676 INFO L87 Difference]: Start difference. First operand 518 states and 855 transitions. Second operand 3 states. [2018-07-22 06:07:35,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 06:07:35,016 INFO L93 Difference]: Finished difference Result 1534 states and 2541 transitions. [2018-07-22 06:07:35,022 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-22 06:07:35,022 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 205 [2018-07-22 06:07:35,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 06:07:35,029 INFO L225 Difference]: With dead ends: 1534 [2018-07-22 06:07:35,029 INFO L226 Difference]: Without dead ends: 1018 [2018-07-22 06:07:35,032 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 06:07:35,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1018 states. [2018-07-22 06:07:35,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1018 to 1016. [2018-07-22 06:07:35,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1016 states. [2018-07-22 06:07:35,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1016 states to 1016 states and 1680 transitions. [2018-07-22 06:07:35,118 INFO L78 Accepts]: Start accepts. Automaton has 1016 states and 1680 transitions. Word has length 205 [2018-07-22 06:07:35,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 06:07:35,118 INFO L471 AbstractCegarLoop]: Abstraction has 1016 states and 1680 transitions. [2018-07-22 06:07:35,118 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-22 06:07:35,119 INFO L276 IsEmpty]: Start isEmpty. Operand 1016 states and 1680 transitions. [2018-07-22 06:07:35,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2018-07-22 06:07:35,125 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 06:07:35,126 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, 1, 1, 1] [2018-07-22 06:07:35,126 INFO L414 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 06:07:35,126 INFO L82 PathProgramCache]: Analyzing trace with hash 618288763, now seen corresponding path program 1 times [2018-07-22 06:07:35,126 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 06:07:35,127 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 06:07:35,127 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 06:07:35,128 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 06:07:35,128 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 06:07:35,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 06:07:35,349 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 06:07:35,350 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 06:07:35,350 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-07-22 06:07:35,350 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-22 06:07:35,351 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-22 06:07:35,351 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-22 06:07:35,351 INFO L87 Difference]: Start difference. First operand 1016 states and 1680 transitions. Second operand 3 states. [2018-07-22 06:07:38,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 06:07:38,047 INFO L93 Difference]: Finished difference Result 2884 states and 4874 transitions. [2018-07-22 06:07:38,048 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-22 06:07:38,048 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 208 [2018-07-22 06:07:38,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 06:07:38,059 INFO L225 Difference]: With dead ends: 2884 [2018-07-22 06:07:38,059 INFO L226 Difference]: Without dead ends: 1870 [2018-07-22 06:07:38,062 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 06:07:38,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1870 states. [2018-07-22 06:07:38,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1870 to 1842. [2018-07-22 06:07:38,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1842 states. [2018-07-22 06:07:38,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1842 states to 1842 states and 2992 transitions. [2018-07-22 06:07:38,129 INFO L78 Accepts]: Start accepts. Automaton has 1842 states and 2992 transitions. Word has length 208 [2018-07-22 06:07:38,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 06:07:38,129 INFO L471 AbstractCegarLoop]: Abstraction has 1842 states and 2992 transitions. [2018-07-22 06:07:38,129 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-22 06:07:38,129 INFO L276 IsEmpty]: Start isEmpty. Operand 1842 states and 2992 transitions. [2018-07-22 06:07:38,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2018-07-22 06:07:38,136 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 06:07:38,137 INFO L358 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 06:07:38,138 INFO L414 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 06:07:38,138 INFO L82 PathProgramCache]: Analyzing trace with hash 464082626, now seen corresponding path program 1 times [2018-07-22 06:07:38,138 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 06:07:38,138 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 06:07:38,139 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 06:07:38,139 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 06:07:38,139 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 06:07:38,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 06:07:38,380 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-22 06:07:38,380 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 06:07:38,380 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-22 06:07:38,381 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 06:07:38,381 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 06:07:38,381 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 06:07:38,382 INFO L87 Difference]: Start difference. First operand 1842 states and 2992 transitions. Second operand 4 states. [2018-07-22 06:07:41,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 06:07:41,956 INFO L93 Difference]: Finished difference Result 7038 states and 11599 transitions. [2018-07-22 06:07:41,956 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 06:07:41,956 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 215 [2018-07-22 06:07:41,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 06:07:41,982 INFO L225 Difference]: With dead ends: 7038 [2018-07-22 06:07:41,982 INFO L226 Difference]: Without dead ends: 5198 [2018-07-22 06:07:41,985 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 06:07:41,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5198 states. [2018-07-22 06:07:42,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5198 to 3484. [2018-07-22 06:07:42,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3484 states. [2018-07-22 06:07:42,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3484 states to 3484 states and 5336 transitions. [2018-07-22 06:07:42,103 INFO L78 Accepts]: Start accepts. Automaton has 3484 states and 5336 transitions. Word has length 215 [2018-07-22 06:07:42,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 06:07:42,104 INFO L471 AbstractCegarLoop]: Abstraction has 3484 states and 5336 transitions. [2018-07-22 06:07:42,104 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 06:07:42,104 INFO L276 IsEmpty]: Start isEmpty. Operand 3484 states and 5336 transitions. [2018-07-22 06:07:42,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2018-07-22 06:07:42,113 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 06:07:42,114 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, 1, 1, 1] [2018-07-22 06:07:42,114 INFO L414 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 06:07:42,114 INFO L82 PathProgramCache]: Analyzing trace with hash 1536268327, now seen corresponding path program 1 times [2018-07-22 06:07:42,114 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 06:07:42,115 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 06:07:42,116 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 06:07:42,117 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 06:07:42,117 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 06:07:42,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 06:07:42,464 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 06:07:42,464 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 06:07:42,465 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-22 06:07:42,465 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-22 06:07:42,465 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-22 06:07:42,466 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-22 06:07:42,466 INFO L87 Difference]: Start difference. First operand 3484 states and 5336 transitions. Second operand 3 states. [2018-07-22 06:07:43,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 06:07:43,610 INFO L93 Difference]: Finished difference Result 10250 states and 15789 transitions. [2018-07-22 06:07:43,610 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-22 06:07:43,610 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 216 [2018-07-22 06:07:43,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 06:07:43,634 INFO L225 Difference]: With dead ends: 10250 [2018-07-22 06:07:43,634 INFO L226 Difference]: Without dead ends: 6768 [2018-07-22 06:07:43,640 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 06:07:43,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6768 states. [2018-07-22 06:07:43,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6768 to 6754. [2018-07-22 06:07:43,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6754 states. [2018-07-22 06:07:43,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6754 states to 6754 states and 9828 transitions. [2018-07-22 06:07:43,880 INFO L78 Accepts]: Start accepts. Automaton has 6754 states and 9828 transitions. Word has length 216 [2018-07-22 06:07:43,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 06:07:43,881 INFO L471 AbstractCegarLoop]: Abstraction has 6754 states and 9828 transitions. [2018-07-22 06:07:43,881 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-22 06:07:43,881 INFO L276 IsEmpty]: Start isEmpty. Operand 6754 states and 9828 transitions. [2018-07-22 06:07:43,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2018-07-22 06:07:43,901 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 06:07:43,901 INFO L358 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 06:07:43,902 INFO L414 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 06:07:43,902 INFO L82 PathProgramCache]: Analyzing trace with hash -277600023, now seen corresponding path program 1 times [2018-07-22 06:07:43,902 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 06:07:43,902 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 06:07:43,903 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 06:07:43,903 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 06:07:43,903 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 06:07:43,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 06:07:44,067 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2018-07-22 06:07:44,068 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 06:07:44,068 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-07-22 06:07:44,068 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-22 06:07:44,069 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-22 06:07:44,069 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-22 06:07:44,069 INFO L87 Difference]: Start difference. First operand 6754 states and 9828 transitions. Second operand 3 states. [2018-07-22 06:07:45,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 06:07:45,666 INFO L93 Difference]: Finished difference Result 13449 states and 19577 transitions. [2018-07-22 06:07:45,666 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-22 06:07:45,666 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 237 [2018-07-22 06:07:45,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 06:07:45,692 INFO L225 Difference]: With dead ends: 13449 [2018-07-22 06:07:45,692 INFO L226 Difference]: Without dead ends: 6697 [2018-07-22 06:07:45,700 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 06:07:45,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6697 states. [2018-07-22 06:07:45,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6697 to 6697. [2018-07-22 06:07:45,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6697 states. [2018-07-22 06:07:45,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6697 states to 6697 states and 9583 transitions. [2018-07-22 06:07:45,844 INFO L78 Accepts]: Start accepts. Automaton has 6697 states and 9583 transitions. Word has length 237 [2018-07-22 06:07:45,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 06:07:45,845 INFO L471 AbstractCegarLoop]: Abstraction has 6697 states and 9583 transitions. [2018-07-22 06:07:45,845 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-22 06:07:45,845 INFO L276 IsEmpty]: Start isEmpty. Operand 6697 states and 9583 transitions. [2018-07-22 06:07:45,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2018-07-22 06:07:45,861 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 06:07:45,861 INFO L358 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 06:07:45,861 INFO L414 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 06:07:45,862 INFO L82 PathProgramCache]: Analyzing trace with hash 1193045243, now seen corresponding path program 1 times [2018-07-22 06:07:45,862 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 06:07:45,862 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 06:07:45,864 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 06:07:45,864 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 06:07:45,864 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 06:07:45,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 06:07:46,025 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2018-07-22 06:07:46,025 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 06:07:46,025 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-22 06:07:46,026 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-22 06:07:46,026 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-22 06:07:46,027 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-22 06:07:46,027 INFO L87 Difference]: Start difference. First operand 6697 states and 9583 transitions. Second operand 3 states. [2018-07-22 06:07:47,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 06:07:47,139 INFO L93 Difference]: Finished difference Result 19924 states and 28571 transitions. [2018-07-22 06:07:47,139 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-22 06:07:47,140 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 247 [2018-07-22 06:07:47,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 06:07:47,182 INFO L225 Difference]: With dead ends: 19924 [2018-07-22 06:07:47,183 INFO L226 Difference]: Without dead ends: 13229 [2018-07-22 06:07:47,192 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-22 06:07:47,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13229 states. [2018-07-22 06:07:47,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13229 to 13225. [2018-07-22 06:07:47,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13225 states. [2018-07-22 06:07:47,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13225 states to 13225 states and 17011 transitions. [2018-07-22 06:07:47,436 INFO L78 Accepts]: Start accepts. Automaton has 13225 states and 17011 transitions. Word has length 247 [2018-07-22 06:07:47,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 06:07:47,445 INFO L471 AbstractCegarLoop]: Abstraction has 13225 states and 17011 transitions. [2018-07-22 06:07:47,445 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-22 06:07:47,445 INFO L276 IsEmpty]: Start isEmpty. Operand 13225 states and 17011 transitions. [2018-07-22 06:07:47,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2018-07-22 06:07:47,480 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 06:07:47,481 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, 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] [2018-07-22 06:07:47,481 INFO L414 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 06:07:47,481 INFO L82 PathProgramCache]: Analyzing trace with hash 1510596309, now seen corresponding path program 1 times [2018-07-22 06:07:47,481 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 06:07:47,481 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 06:07:47,482 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 06:07:47,482 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 06:07:47,482 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 06:07:47,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 06:07:47,724 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-22 06:07:47,725 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 06:07:47,725 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-22 06:07:47,725 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 06:07:47,725 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 06:07:47,725 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 06:07:47,727 INFO L87 Difference]: Start difference. First operand 13225 states and 17011 transitions. Second operand 4 states. [2018-07-22 06:07:49,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 06:07:49,614 INFO L93 Difference]: Finished difference Result 32164 states and 42226 transitions. [2018-07-22 06:07:49,614 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 06:07:49,614 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 264 [2018-07-22 06:07:49,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 06:07:49,655 INFO L225 Difference]: With dead ends: 32164 [2018-07-22 06:07:49,655 INFO L226 Difference]: Without dead ends: 18941 [2018-07-22 06:07:49,669 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 06:07:49,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18941 states. [2018-07-22 06:07:49,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18941 to 18937. [2018-07-22 06:07:49,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18937 states. [2018-07-22 06:07:49,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18937 states to 18937 states and 23230 transitions. [2018-07-22 06:07:49,937 INFO L78 Accepts]: Start accepts. Automaton has 18937 states and 23230 transitions. Word has length 264 [2018-07-22 06:07:49,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 06:07:49,937 INFO L471 AbstractCegarLoop]: Abstraction has 18937 states and 23230 transitions. [2018-07-22 06:07:49,937 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 06:07:49,937 INFO L276 IsEmpty]: Start isEmpty. Operand 18937 states and 23230 transitions. [2018-07-22 06:07:49,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2018-07-22 06:07:49,955 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 06:07:49,956 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, 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] [2018-07-22 06:07:49,956 INFO L414 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 06:07:49,956 INFO L82 PathProgramCache]: Analyzing trace with hash 432220372, now seen corresponding path program 1 times [2018-07-22 06:07:49,956 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 06:07:49,956 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 06:07:49,957 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 06:07:49,957 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 06:07:49,958 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 06:07:50,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 06:07:50,380 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-22 06:07:50,382 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 06:07:50,382 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-22 06:07:50,382 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 06:07:50,383 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 06:07:50,383 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 06:07:50,383 INFO L87 Difference]: Start difference. First operand 18937 states and 23230 transitions. Second operand 4 states. [2018-07-22 06:07:52,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 06:07:52,505 INFO L93 Difference]: Finished difference Result 67944 states and 82144 transitions. [2018-07-22 06:07:52,505 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 06:07:52,505 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 275 [2018-07-22 06:07:52,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 06:07:52,570 INFO L225 Difference]: With dead ends: 67944 [2018-07-22 06:07:52,570 INFO L226 Difference]: Without dead ends: 49009 [2018-07-22 06:07:52,598 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 06:07:52,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49009 states. [2018-07-22 06:07:53,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49009 to 35461. [2018-07-22 06:07:53,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35461 states. [2018-07-22 06:07:53,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35461 states to 35461 states and 42357 transitions. [2018-07-22 06:07:53,211 INFO L78 Accepts]: Start accepts. Automaton has 35461 states and 42357 transitions. Word has length 275 [2018-07-22 06:07:53,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 06:07:53,212 INFO L471 AbstractCegarLoop]: Abstraction has 35461 states and 42357 transitions. [2018-07-22 06:07:53,212 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 06:07:53,212 INFO L276 IsEmpty]: Start isEmpty. Operand 35461 states and 42357 transitions. [2018-07-22 06:07:53,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2018-07-22 06:07:53,243 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 06:07:53,244 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:07:53,244 INFO L414 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 06:07:53,244 INFO L82 PathProgramCache]: Analyzing trace with hash -1169171758, now seen corresponding path program 1 times [2018-07-22 06:07:53,245 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 06:07:53,245 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 06:07:53,247 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 06:07:53,248 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 06:07:53,248 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 06:07:53,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 06:07:53,603 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-07-22 06:07:53,603 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 06:07:53,604 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-22 06:07:53,604 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-22 06:07:53,604 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-22 06:07:53,604 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-22 06:07:53,604 INFO L87 Difference]: Start difference. First operand 35461 states and 42357 transitions. Second operand 3 states. [2018-07-22 06:07:54,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 06:07:54,647 INFO L93 Difference]: Finished difference Result 70922 states and 84716 transitions. [2018-07-22 06:07:54,647 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-22 06:07:54,647 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 290 [2018-07-22 06:07:54,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 06:07:54,681 INFO L225 Difference]: With dead ends: 70922 [2018-07-22 06:07:54,681 INFO L226 Difference]: Without dead ends: 35463 [2018-07-22 06:07:54,703 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 06:07:54,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35463 states. [2018-07-22 06:07:55,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35463 to 35461. [2018-07-22 06:07:55,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35461 states. [2018-07-22 06:07:55,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35461 states to 35461 states and 40807 transitions. [2018-07-22 06:07:55,381 INFO L78 Accepts]: Start accepts. Automaton has 35461 states and 40807 transitions. Word has length 290 [2018-07-22 06:07:55,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 06:07:55,381 INFO L471 AbstractCegarLoop]: Abstraction has 35461 states and 40807 transitions. [2018-07-22 06:07:55,381 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-22 06:07:55,381 INFO L276 IsEmpty]: Start isEmpty. Operand 35461 states and 40807 transitions. [2018-07-22 06:07:55,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2018-07-22 06:07:55,401 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 06:07:55,402 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, 2, 2, 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] [2018-07-22 06:07:55,402 INFO L414 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 06:07:55,402 INFO L82 PathProgramCache]: Analyzing trace with hash 1581482495, now seen corresponding path program 1 times [2018-07-22 06:07:55,402 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 06:07:55,402 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 06:07:55,403 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 06:07:55,403 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 06:07:55,404 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 06:07:55,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 06:07:55,746 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2018-07-22 06:07:55,773 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 06:07:55,773 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-22 06:07:55,773 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 06:07:55,774 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 06:07:55,774 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 06:07:55,774 INFO L87 Difference]: Start difference. First operand 35461 states and 40807 transitions. Second operand 4 states. [2018-07-22 06:07:58,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 06:07:58,132 INFO L93 Difference]: Finished difference Result 107986 states and 123670 transitions. [2018-07-22 06:07:58,134 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 06:07:58,134 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 300 [2018-07-22 06:07:58,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 06:07:58,196 INFO L225 Difference]: With dead ends: 107986 [2018-07-22 06:07:58,197 INFO L226 Difference]: Without dead ends: 72526 [2018-07-22 06:07:58,231 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 06:07:58,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72526 states. [2018-07-22 06:07:59,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72526 to 72521. [2018-07-22 06:07:59,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72521 states. [2018-07-22 06:07:59,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72521 states to 72521 states and 82662 transitions. [2018-07-22 06:07:59,200 INFO L78 Accepts]: Start accepts. Automaton has 72521 states and 82662 transitions. Word has length 300 [2018-07-22 06:07:59,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 06:07:59,200 INFO L471 AbstractCegarLoop]: Abstraction has 72521 states and 82662 transitions. [2018-07-22 06:07:59,200 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 06:07:59,200 INFO L276 IsEmpty]: Start isEmpty. Operand 72521 states and 82662 transitions. [2018-07-22 06:07:59,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2018-07-22 06:07:59,214 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 06:07:59,215 INFO L358 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:07:59,215 INFO L414 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 06:07:59,215 INFO L82 PathProgramCache]: Analyzing trace with hash -188463746, now seen corresponding path program 1 times [2018-07-22 06:07:59,215 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 06:07:59,215 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 06:07:59,216 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 06:07:59,216 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 06:07:59,216 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 06:07:59,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 06:07:59,501 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2018-07-22 06:07:59,502 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 06:07:59,502 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-22 06:07:59,502 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 06:07:59,503 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 06:07:59,503 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 06:07:59,503 INFO L87 Difference]: Start difference. First operand 72521 states and 82662 transitions. Second operand 4 states. [2018-07-22 06:08:01,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 06:08:01,284 INFO L93 Difference]: Finished difference Result 145038 states and 165320 transitions. [2018-07-22 06:08:01,284 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 06:08:01,284 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 301 [2018-07-22 06:08:01,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 06:08:03,396 INFO L225 Difference]: With dead ends: 145038 [2018-07-22 06:08:03,396 INFO L226 Difference]: Without dead ends: 72519 [2018-07-22 06:08:03,418 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 06:08:03,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72519 states. [2018-07-22 06:08:03,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72519 to 72519. [2018-07-22 06:08:03,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72519 states. [2018-07-22 06:08:04,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72519 states to 72519 states and 82018 transitions. [2018-07-22 06:08:04,037 INFO L78 Accepts]: Start accepts. Automaton has 72519 states and 82018 transitions. Word has length 301 [2018-07-22 06:08:04,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 06:08:04,037 INFO L471 AbstractCegarLoop]: Abstraction has 72519 states and 82018 transitions. [2018-07-22 06:08:04,037 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 06:08:04,038 INFO L276 IsEmpty]: Start isEmpty. Operand 72519 states and 82018 transitions. [2018-07-22 06:08:04,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2018-07-22 06:08:04,052 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 06:08:04,053 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 06:08:04,053 INFO L414 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 06:08:04,054 INFO L82 PathProgramCache]: Analyzing trace with hash 241330175, now seen corresponding path program 1 times [2018-07-22 06:08:04,054 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 06:08:04,054 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 06:08:04,055 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 06:08:04,055 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 06:08:04,055 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 06:08:04,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 06:08:04,272 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-07-22 06:08:04,272 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 06:08:04,272 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-07-22 06:08:04,273 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-22 06:08:04,273 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-22 06:08:04,273 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-22 06:08:04,274 INFO L87 Difference]: Start difference. First operand 72519 states and 82018 transitions. Second operand 3 states. [2018-07-22 06:08:06,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 06:08:06,853 INFO L93 Difference]: Finished difference Result 164504 states and 185757 transitions. [2018-07-22 06:08:06,853 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-22 06:08:06,853 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 302 [2018-07-22 06:08:06,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 06:08:06,932 INFO L225 Difference]: With dead ends: 164504 [2018-07-22 06:08:06,932 INFO L226 Difference]: Without dead ends: 91987 [2018-07-22 06:08:06,961 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-22 06:08:07,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91987 states. [2018-07-22 06:08:07,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91987 to 91983. [2018-07-22 06:08:07,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91983 states. [2018-07-22 06:08:07,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91983 states to 91983 states and 103641 transitions. [2018-07-22 06:08:07,815 INFO L78 Accepts]: Start accepts. Automaton has 91983 states and 103641 transitions. Word has length 302 [2018-07-22 06:08:07,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 06:08:07,816 INFO L471 AbstractCegarLoop]: Abstraction has 91983 states and 103641 transitions. [2018-07-22 06:08:07,816 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-22 06:08:07,816 INFO L276 IsEmpty]: Start isEmpty. Operand 91983 states and 103641 transitions. [2018-07-22 06:08:07,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2018-07-22 06:08:07,843 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 06:08:07,844 INFO L358 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 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, 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] [2018-07-22 06:08:07,844 INFO L414 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 06:08:07,845 INFO L82 PathProgramCache]: Analyzing trace with hash -625600061, now seen corresponding path program 1 times [2018-07-22 06:08:07,845 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 06:08:07,845 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 06:08:07,846 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 06:08:07,846 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 06:08:07,846 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 06:08:07,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 06:08:08,828 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2018-07-22 06:08:08,829 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 06:08:08,829 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-22 06:08:08,830 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 06:08:08,830 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 06:08:08,830 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 06:08:08,830 INFO L87 Difference]: Start difference. First operand 91983 states and 103641 transitions. Second operand 4 states. [2018-07-22 06:08:11,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 06:08:11,475 INFO L93 Difference]: Finished difference Result 333331 states and 372841 transitions. [2018-07-22 06:08:11,475 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 06:08:11,475 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 303 [2018-07-22 06:08:11,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 06:08:11,726 INFO L225 Difference]: With dead ends: 333331 [2018-07-22 06:08:11,726 INFO L226 Difference]: Without dead ends: 241350 [2018-07-22 06:08:11,790 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 06:08:11,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241350 states. [2018-07-22 06:08:15,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241350 to 241346. [2018-07-22 06:08:15,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241346 states. [2018-07-22 06:08:15,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241346 states to 241346 states and 268885 transitions. [2018-07-22 06:08:15,433 INFO L78 Accepts]: Start accepts. Automaton has 241346 states and 268885 transitions. Word has length 303 [2018-07-22 06:08:15,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 06:08:15,433 INFO L471 AbstractCegarLoop]: Abstraction has 241346 states and 268885 transitions. [2018-07-22 06:08:15,433 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 06:08:15,433 INFO L276 IsEmpty]: Start isEmpty. Operand 241346 states and 268885 transitions. [2018-07-22 06:08:15,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2018-07-22 06:08:15,459 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 06:08:15,459 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-22 06:08:15,460 INFO L414 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 06:08:15,460 INFO L82 PathProgramCache]: Analyzing trace with hash -1738730325, now seen corresponding path program 1 times [2018-07-22 06:08:15,460 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 06:08:15,460 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 06:08:15,461 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 06:08:15,461 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 06:08:15,461 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 06:08:15,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 06:08:15,812 WARN L169 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-07-22 06:08:16,011 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 75 proven. 4 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-07-22 06:08:16,011 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-22 06:08:16,011 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 06:08:16,023 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 06:08:16,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 06:08:16,205 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-22 06:08:16,429 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2018-07-22 06:08:16,465 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-22 06:08:16,466 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2018-07-22 06:08:16,467 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-22 06:08:16,467 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-22 06:08:16,467 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-07-22 06:08:16,467 INFO L87 Difference]: Start difference. First operand 241346 states and 268885 transitions. Second operand 6 states. [2018-07-22 06:08:24,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 06:08:24,485 INFO L93 Difference]: Finished difference Result 652930 states and 731146 transitions. [2018-07-22 06:08:24,485 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-07-22 06:08:24,485 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 310 [2018-07-22 06:08:24,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 06:08:24,941 INFO L225 Difference]: With dead ends: 652930 [2018-07-22 06:08:24,941 INFO L226 Difference]: Without dead ends: 411586 [2018-07-22 06:08:25,717 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 313 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2018-07-22 06:08:25,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411586 states. [2018-07-22 06:08:34,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411586 to 400664. [2018-07-22 06:08:34,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 400664 states. [2018-07-22 06:08:34,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400664 states to 400664 states and 436382 transitions. [2018-07-22 06:08:34,582 INFO L78 Accepts]: Start accepts. Automaton has 400664 states and 436382 transitions. Word has length 310 [2018-07-22 06:08:34,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 06:08:34,582 INFO L471 AbstractCegarLoop]: Abstraction has 400664 states and 436382 transitions. [2018-07-22 06:08:34,582 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-22 06:08:34,582 INFO L276 IsEmpty]: Start isEmpty. Operand 400664 states and 436382 transitions. [2018-07-22 06:08:34,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2018-07-22 06:08:34,627 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 06:08:34,627 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, 1, 1, 1] [2018-07-22 06:08:34,628 INFO L414 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 06:08:34,628 INFO L82 PathProgramCache]: Analyzing trace with hash -1762118887, now seen corresponding path program 1 times [2018-07-22 06:08:34,628 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 06:08:34,628 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 06:08:34,629 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 06:08:34,629 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 06:08:34,629 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 06:08:34,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 06:08:35,033 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 06:08:35,033 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 06:08:35,037 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-22 06:08:35,037 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 06:08:35,038 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 06:08:35,038 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 06:08:35,038 INFO L87 Difference]: Start difference. First operand 400664 states and 436382 transitions. Second operand 4 states. [2018-07-22 06:08:46,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 06:08:46,893 INFO L93 Difference]: Finished difference Result 815502 states and 888876 transitions. [2018-07-22 06:08:46,894 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 06:08:46,894 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 386 [2018-07-22 06:08:46,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 06:08:47,381 INFO L225 Difference]: With dead ends: 815502 [2018-07-22 06:08:47,381 INFO L226 Difference]: Without dead ends: 414840 [2018-07-22 06:08:47,511 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 06:08:47,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414840 states. [2018-07-22 06:08:52,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414840 to 410081. [2018-07-22 06:08:52,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 410081 states. [2018-07-22 06:08:53,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410081 states to 410081 states and 445948 transitions. [2018-07-22 06:08:53,503 INFO L78 Accepts]: Start accepts. Automaton has 410081 states and 445948 transitions. Word has length 386 [2018-07-22 06:08:53,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 06:08:53,504 INFO L471 AbstractCegarLoop]: Abstraction has 410081 states and 445948 transitions. [2018-07-22 06:08:53,504 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 06:08:53,504 INFO L276 IsEmpty]: Start isEmpty. Operand 410081 states and 445948 transitions. [2018-07-22 06:08:53,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 437 [2018-07-22 06:08:53,563 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 06:08:53,563 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, 1, 1, 1] [2018-07-22 06:08:53,563 INFO L414 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 06:08:53,563 INFO L82 PathProgramCache]: Analyzing trace with hash 551573779, now seen corresponding path program 1 times [2018-07-22 06:08:53,563 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 06:08:53,564 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 06:08:53,564 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 06:08:53,564 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 06:08:53,564 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 06:08:53,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 06:08:53,892 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 06:08:53,893 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 06:08:53,893 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-22 06:08:53,894 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-22 06:08:53,894 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-22 06:08:53,894 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-22 06:08:53,894 INFO L87 Difference]: Start difference. First operand 410081 states and 445948 transitions. Second operand 3 states. [2018-07-22 06:09:03,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 06:09:03,788 INFO L93 Difference]: Finished difference Result 1164744 states and 1265893 transitions. [2018-07-22 06:09:03,789 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-22 06:09:03,789 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 436 [2018-07-22 06:09:03,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 06:09:04,769 INFO L225 Difference]: With dead ends: 1164744 [2018-07-22 06:09:04,769 INFO L226 Difference]: Without dead ends: 754665 [2018-07-22 06:09:04,925 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 06:09:05,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 754665 states. [2018-07-22 06:09:20,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 754665 to 752818. [2018-07-22 06:09:20,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 752818 states. [2018-07-22 06:09:23,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 752818 states to 752818 states and 815180 transitions. [2018-07-22 06:09:23,056 INFO L78 Accepts]: Start accepts. Automaton has 752818 states and 815180 transitions. Word has length 436 [2018-07-22 06:09:23,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 06:09:23,057 INFO L471 AbstractCegarLoop]: Abstraction has 752818 states and 815180 transitions. [2018-07-22 06:09:23,057 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-22 06:09:23,057 INFO L276 IsEmpty]: Start isEmpty. Operand 752818 states and 815180 transitions. [2018-07-22 06:09:23,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2018-07-22 06:09:23,155 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 06:09:23,155 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, 1, 1, 1] [2018-07-22 06:09:23,155 INFO L414 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 06:09:23,156 INFO L82 PathProgramCache]: Analyzing trace with hash -1478566449, now seen corresponding path program 1 times [2018-07-22 06:09:23,156 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 06:09:23,156 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 06:09:23,157 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 06:09:23,157 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 06:09:23,157 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 06:09:23,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 06:09:23,637 WARN L169 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-07-22 06:09:23,860 WARN L169 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-07-22 06:09:24,180 WARN L169 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 41 [2018-07-22 06:09:32,514 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 06:09:32,514 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-22 06:09:32,515 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 06:09:32,522 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 06:09:32,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 06:09:32,712 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-22 06:09:33,066 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 257 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2018-07-22 06:09:33,101 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-22 06:09:33,101 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 11 [2018-07-22 06:09:33,103 INFO L450 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-22 06:09:33,103 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-22 06:09:33,103 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-07-22 06:09:33,103 INFO L87 Difference]: Start difference. First operand 752818 states and 815180 transitions. Second operand 11 states. [2018-07-22 06:10:07,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 06:10:07,742 INFO L93 Difference]: Finished difference Result 3242453 states and 3507584 transitions. [2018-07-22 06:10:07,743 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-07-22 06:10:07,743 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 438 [2018-07-22 06:10:07,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 06:10:12,301 INFO L225 Difference]: With dead ends: 3242453 [2018-07-22 06:10:12,301 INFO L226 Difference]: Without dead ends: 2489637 [2018-07-22 06:10:14,029 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 444 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=123, Invalid=257, Unknown=0, NotChecked=0, Total=380 [2018-07-22 06:10:15,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2489637 states. Received shutdown request... [2018-07-22 06:10:33,630 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-22 06:10:33,634 WARN L202 ceAbstractionStarter]: Timeout [2018-07-22 06:10:33,634 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.07 06:10:33 BoogieIcfgContainer [2018-07-22 06:10:33,634 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-22 06:10:33,635 INFO L168 Benchmark]: Toolchain (without parser) took 191696.09 ms. Allocated memory was 306.7 MB in the beginning and 5.3 GB in the end (delta: 5.0 GB). Free memory was 245.7 MB in the beginning and 2.3 GB in the end (delta: -2.0 GB). Peak memory consumption was 4.2 GB. Max. memory is 5.3 GB. [2018-07-22 06:10:33,636 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 306.7 MB. Free memory is still 271.5 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-07-22 06:10:33,636 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1513.12 ms. Allocated memory is still 306.7 MB. Free memory was 245.7 MB in the beginning and 246.3 MB in the end (delta: -572.9 kB). Peak memory consumption was 72.3 MB. Max. memory is 5.3 GB. [2018-07-22 06:10:33,637 INFO L168 Benchmark]: Boogie Procedure Inliner took 174.48 ms. Allocated memory is still 306.7 MB. Free memory was 246.3 MB in the beginning and 231.9 MB in the end (delta: 14.4 MB). Peak memory consumption was 14.4 MB. Max. memory is 5.3 GB. [2018-07-22 06:10:33,637 INFO L168 Benchmark]: Boogie Preprocessor took 485.94 ms. Allocated memory was 306.7 MB in the beginning and 398.5 MB in the end (delta: 91.8 MB). Free memory was 231.9 MB in the beginning and 360.3 MB in the end (delta: -128.4 MB). Peak memory consumption was 23.1 MB. Max. memory is 5.3 GB. [2018-07-22 06:10:33,638 INFO L168 Benchmark]: RCFGBuilder took 5614.95 ms. Allocated memory was 398.5 MB in the beginning and 464.5 MB in the end (delta: 66.1 MB). Free memory was 360.3 MB in the beginning and 388.1 MB in the end (delta: -27.8 MB). Peak memory consumption was 158.7 MB. Max. memory is 5.3 GB. [2018-07-22 06:10:33,638 INFO L168 Benchmark]: TraceAbstraction took 183873.53 ms. Allocated memory was 464.5 MB in the beginning and 5.3 GB in the end (delta: 4.9 GB). Free memory was 388.1 MB in the beginning and 2.3 GB in the end (delta: -1.9 GB). Peak memory consumption was 4.2 GB. Max. memory is 5.3 GB. [2018-07-22 06:10:33,644 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 306.7 MB. Free memory is still 271.5 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 1513.12 ms. Allocated memory is still 306.7 MB. Free memory was 245.7 MB in the beginning and 246.3 MB in the end (delta: -572.9 kB). Peak memory consumption was 72.3 MB. Max. memory is 5.3 GB. * Boogie Procedure Inliner took 174.48 ms. Allocated memory is still 306.7 MB. Free memory was 246.3 MB in the beginning and 231.9 MB in the end (delta: 14.4 MB). Peak memory consumption was 14.4 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 485.94 ms. Allocated memory was 306.7 MB in the beginning and 398.5 MB in the end (delta: 91.8 MB). Free memory was 231.9 MB in the beginning and 360.3 MB in the end (delta: -128.4 MB). Peak memory consumption was 23.1 MB. Max. memory is 5.3 GB. * RCFGBuilder took 5614.95 ms. Allocated memory was 398.5 MB in the beginning and 464.5 MB in the end (delta: 66.1 MB). Free memory was 360.3 MB in the beginning and 388.1 MB in the end (delta: -27.8 MB). Peak memory consumption was 158.7 MB. Max. memory is 5.3 GB. * TraceAbstraction took 183873.53 ms. Allocated memory was 464.5 MB in the beginning and 5.3 GB in the end (delta: 4.9 GB). Free memory was 388.1 MB in the beginning and 2.3 GB in the end (delta: -1.9 GB). Peak memory consumption was 4.2 GB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 1629]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 1629). Cancelled while executing MinimizeSevpa. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 303 locations, 1 error locations. TIMEOUT Result, 183.6s OverallTime, 18 OverallIterations, 5 TraceHistogramMax, 104.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 4928 SDtfs, 12456 SDslu, 3439 SDs, 0 SdLazy, 23386 SolverSat, 4604 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 38.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 829 GetRequests, 777 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 3.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=752818occurred in iteration=17, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 61.2s AutomataMinimizationTime, 18 MinimizatonAttempts, 33101 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.5s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 5.4s InterpolantComputationTime, 5880 NumberOfCodeBlocks, 5880 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 5860 ConstructedInterpolants, 0 QuantifiedInterpolants, 5320854 SizeOfPredicates, 3 NumberOfNonLiveVariables, 1241 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 20 InterpolantComputations, 18 PerfectInterpolantSequences, 2581/2666 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/Problem03_label04_true-unreach-call.c_svcomp-Reach-64bit-Automizer_Default.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-22_06-10-33-662.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/Problem03_label04_true-unreach-call.c_svcomp-Reach-64bit-Automizer_Default.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-22_06-10-33-662.csv Completed graceful shutdown