java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem19_label02_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dace188-m [2018-09-14 18:17:59,266 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-14 18:17:59,269 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-14 18:17:59,288 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-14 18:17:59,289 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-14 18:17:59,290 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-14 18:17:59,292 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-14 18:17:59,295 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-14 18:17:59,297 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-14 18:17:59,300 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-14 18:17:59,301 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-14 18:17:59,301 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-14 18:17:59,304 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-14 18:17:59,307 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-14 18:17:59,314 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-14 18:17:59,315 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-14 18:17:59,316 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-14 18:17:59,318 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-14 18:17:59,319 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-14 18:17:59,321 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-14 18:17:59,322 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-14 18:17:59,323 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-14 18:17:59,325 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-14 18:17:59,325 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-14 18:17:59,326 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-14 18:17:59,327 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-14 18:17:59,327 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-14 18:17:59,328 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-14 18:17:59,329 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-14 18:17:59,330 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-14 18:17:59,330 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-14 18:17:59,331 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-14 18:17:59,331 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-14 18:17:59,331 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-14 18:17:59,332 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-14 18:17:59,333 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-14 18:17:59,333 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-09-14 18:17:59,348 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-14 18:17:59,348 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-14 18:17:59,349 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-14 18:17:59,349 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-14 18:17:59,349 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-14 18:17:59,350 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-14 18:17:59,350 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-14 18:17:59,350 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-14 18:17:59,350 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-14 18:17:59,350 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-14 18:17:59,351 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-14 18:17:59,351 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-14 18:17:59,351 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-14 18:17:59,352 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-14 18:17:59,352 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-14 18:17:59,352 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-14 18:17:59,352 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-14 18:17:59,352 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-14 18:17:59,353 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-14 18:17:59,353 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-14 18:17:59,353 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-14 18:17:59,353 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-14 18:17:59,353 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-14 18:17:59,354 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-14 18:17:59,354 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-14 18:17:59,354 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-14 18:17:59,354 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-14 18:17:59,354 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-14 18:17:59,355 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-14 18:17:59,355 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-14 18:17:59,355 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-14 18:17:59,355 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-14 18:17:59,355 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-14 18:17:59,408 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-14 18:17:59,421 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-14 18:17:59,425 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-14 18:17:59,426 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-14 18:17:59,427 INFO L276 PluginConnector]: CDTParser initialized [2018-09-14 18:17:59,428 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label02_true-unreach-call.c [2018-09-14 18:17:59,764 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f44677af4/0ef90623944e4533b993be3ce4eb6765/FLAGe355fc76f [2018-09-14 18:18:00,381 INFO L277 CDTParser]: Found 1 translation units. [2018-09-14 18:18:00,382 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label02_true-unreach-call.c [2018-09-14 18:18:00,432 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f44677af4/0ef90623944e4533b993be3ce4eb6765/FLAGe355fc76f [2018-09-14 18:18:00,453 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f44677af4/0ef90623944e4533b993be3ce4eb6765 [2018-09-14 18:18:00,466 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-14 18:18:00,472 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-14 18:18:00,473 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-14 18:18:00,473 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-14 18:18:00,485 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-14 18:18:00,487 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 06:18:00" (1/1) ... [2018-09-14 18:18:00,490 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3665023a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:18:00, skipping insertion in model container [2018-09-14 18:18:00,491 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 06:18:00" (1/1) ... [2018-09-14 18:18:00,503 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-14 18:18:02,800 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 18:18:02,822 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-14 18:18:04,005 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 18:18:04,538 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:18:04 WrapperNode [2018-09-14 18:18:04,538 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-14 18:18:04,539 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-14 18:18:04,540 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-14 18:18:04,540 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-14 18:18:04,551 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:18:04" (1/1) ... [2018-09-14 18:18:04,733 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:18:04" (1/1) ... [2018-09-14 18:18:04,895 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-14 18:18:04,896 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-14 18:18:04,896 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-14 18:18:04,896 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-14 18:18:05,984 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:18:04" (1/1) ... [2018-09-14 18:18:05,984 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:18:04" (1/1) ... [2018-09-14 18:18:06,106 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:18:04" (1/1) ... [2018-09-14 18:18:06,106 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:18:04" (1/1) ... [2018-09-14 18:18:06,383 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:18:04" (1/1) ... [2018-09-14 18:18:06,432 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:18:04" (1/1) ... [2018-09-14 18:18:06,536 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:18:04" (1/1) ... [2018-09-14 18:18:06,655 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-14 18:18:06,655 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-14 18:18:06,656 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-14 18:18:06,656 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-14 18:18:06,657 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:18:04" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-14 18:18:06,732 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-14 18:18:06,733 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-14 18:18:06,733 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2018-09-14 18:18:06,733 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2018-09-14 18:18:06,733 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2018-09-14 18:18:06,734 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2018-09-14 18:18:06,734 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-09-14 18:18:06,734 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-09-14 18:18:06,734 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-09-14 18:18:06,734 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-09-14 18:18:06,734 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-09-14 18:18:06,735 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-09-14 18:18:06,735 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-14 18:18:06,735 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-14 18:18:06,736 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-14 18:18:06,736 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-14 18:18:06,736 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-14 18:18:06,736 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-14 18:18:25,807 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-14 18:18:25,807 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 06:18:25 BoogieIcfgContainer [2018-09-14 18:18:25,807 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-14 18:18:25,808 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-14 18:18:25,809 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-14 18:18:25,812 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-14 18:18:25,812 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.09 06:18:00" (1/3) ... [2018-09-14 18:18:25,813 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30059f9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 06:18:25, skipping insertion in model container [2018-09-14 18:18:25,813 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:18:04" (2/3) ... [2018-09-14 18:18:25,813 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30059f9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 06:18:25, skipping insertion in model container [2018-09-14 18:18:25,813 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 06:18:25" (3/3) ... [2018-09-14 18:18:25,815 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label02_true-unreach-call.c [2018-09-14 18:18:25,825 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-14 18:18:25,837 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-14 18:18:25,921 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-14 18:18:25,922 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-14 18:18:25,922 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-14 18:18:25,922 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-14 18:18:25,922 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-14 18:18:25,922 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-14 18:18:25,922 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-14 18:18:25,923 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-14 18:18:25,923 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-14 18:18:25,981 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states. [2018-09-14 18:18:25,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2018-09-14 18:18:25,992 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:18:25,993 INFO L376 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] [2018-09-14 18:18:25,994 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:18:25,999 INFO L82 PathProgramCache]: Analyzing trace with hash -204669534, now seen corresponding path program 1 times [2018-09-14 18:18:26,001 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:18:26,053 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:18:26,053 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:18:26,053 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:18:26,053 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:18:26,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:18:26,543 WARN L178 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 18:18:26,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:18:26,670 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 18:18:26,670 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-14 18:18:26,670 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:18:26,679 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 18:18:26,695 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 18:18:26,696 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 18:18:26,699 INFO L87 Difference]: Start difference. First operand 1778 states. Second operand 3 states. [2018-09-14 18:18:43,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:18:43,760 INFO L93 Difference]: Finished difference Result 5034 states and 9499 transitions. [2018-09-14 18:18:43,762 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 18:18:43,763 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 73 [2018-09-14 18:18:43,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:18:43,819 INFO L225 Difference]: With dead ends: 5034 [2018-09-14 18:18:43,819 INFO L226 Difference]: Without dead ends: 3254 [2018-09-14 18:18:43,834 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 18:18:43,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3254 states. [2018-09-14 18:18:44,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3254 to 3207. [2018-09-14 18:18:44,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3207 states. [2018-09-14 18:18:44,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3207 states to 3207 states and 5994 transitions. [2018-09-14 18:18:44,081 INFO L78 Accepts]: Start accepts. Automaton has 3207 states and 5994 transitions. Word has length 73 [2018-09-14 18:18:44,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:18:44,087 INFO L480 AbstractCegarLoop]: Abstraction has 3207 states and 5994 transitions. [2018-09-14 18:18:44,087 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 18:18:44,088 INFO L276 IsEmpty]: Start isEmpty. Operand 3207 states and 5994 transitions. [2018-09-14 18:18:44,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-09-14 18:18:44,101 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:18:44,102 INFO L376 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 18:18:44,102 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:18:44,102 INFO L82 PathProgramCache]: Analyzing trace with hash -238257218, now seen corresponding path program 1 times [2018-09-14 18:18:44,103 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:18:44,104 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:18:44,104 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:18:44,104 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:18:44,104 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:18:44,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:18:44,727 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:18:44,727 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 18:18:44,728 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 18:18:44,728 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:18:44,730 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 18:18:44,730 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 18:18:44,730 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-09-14 18:18:44,731 INFO L87 Difference]: Start difference. First operand 3207 states and 5994 transitions. Second operand 6 states. [2018-09-14 18:19:11,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:19:11,225 INFO L93 Difference]: Finished difference Result 9590 states and 17980 transitions. [2018-09-14 18:19:11,225 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-09-14 18:19:11,226 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 146 [2018-09-14 18:19:11,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:19:11,265 INFO L225 Difference]: With dead ends: 9590 [2018-09-14 18:19:11,265 INFO L226 Difference]: Without dead ends: 6389 [2018-09-14 18:19:11,276 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-09-14 18:19:11,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6389 states. [2018-09-14 18:19:11,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6389 to 6281. [2018-09-14 18:19:11,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6281 states. [2018-09-14 18:19:11,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6281 states to 6281 states and 11310 transitions. [2018-09-14 18:19:11,486 INFO L78 Accepts]: Start accepts. Automaton has 6281 states and 11310 transitions. Word has length 146 [2018-09-14 18:19:11,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:19:11,486 INFO L480 AbstractCegarLoop]: Abstraction has 6281 states and 11310 transitions. [2018-09-14 18:19:11,487 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 18:19:11,487 INFO L276 IsEmpty]: Start isEmpty. Operand 6281 states and 11310 transitions. [2018-09-14 18:19:11,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2018-09-14 18:19:11,490 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:19:11,490 INFO L376 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 18:19:11,490 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:19:11,491 INFO L82 PathProgramCache]: Analyzing trace with hash -1315033247, now seen corresponding path program 1 times [2018-09-14 18:19:11,491 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:19:11,492 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:19:11,492 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:19:11,492 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:19:11,492 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:19:11,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:19:11,755 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:19:11,755 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 18:19:11,756 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-14 18:19:11,756 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:19:11,756 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 18:19:11,756 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 18:19:11,757 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-14 18:19:11,757 INFO L87 Difference]: Start difference. First operand 6281 states and 11310 transitions. Second operand 5 states. [2018-09-14 18:19:46,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:19:46,874 INFO L93 Difference]: Finished difference Result 18963 states and 34370 transitions. [2018-09-14 18:19:46,880 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-14 18:19:46,880 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 160 [2018-09-14 18:19:46,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:19:46,948 INFO L225 Difference]: With dead ends: 18963 [2018-09-14 18:19:46,950 INFO L226 Difference]: Without dead ends: 12688 [2018-09-14 18:19:46,974 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-09-14 18:19:46,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12688 states. [2018-09-14 18:19:47,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12688 to 12416. [2018-09-14 18:19:47,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12416 states. [2018-09-14 18:19:47,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12416 states to 12416 states and 18931 transitions. [2018-09-14 18:19:47,312 INFO L78 Accepts]: Start accepts. Automaton has 12416 states and 18931 transitions. Word has length 160 [2018-09-14 18:19:47,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:19:47,313 INFO L480 AbstractCegarLoop]: Abstraction has 12416 states and 18931 transitions. [2018-09-14 18:19:47,313 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 18:19:47,313 INFO L276 IsEmpty]: Start isEmpty. Operand 12416 states and 18931 transitions. [2018-09-14 18:19:47,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2018-09-14 18:19:47,317 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:19:47,318 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 18:19:47,318 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:19:47,319 INFO L82 PathProgramCache]: Analyzing trace with hash 1267702423, now seen corresponding path program 1 times [2018-09-14 18:19:47,319 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:19:47,320 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:19:47,320 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:19:47,320 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:19:47,320 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:19:47,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:19:47,830 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 132 proven. 82 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 18:19:47,830 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:19:47,830 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 18:19:47,839 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:19:47,840 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:19:47,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:19:47,947 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:19:48,165 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 152 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-09-14 18:19:48,165 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:19:48,749 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 132 proven. 82 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 18:19:48,771 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 18:19:48,772 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 9 [2018-09-14 18:19:48,772 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:19:48,772 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 18:19:48,773 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 18:19:48,773 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-09-14 18:19:48,773 INFO L87 Difference]: Start difference. First operand 12416 states and 18931 transitions. Second operand 5 states. [2018-09-14 18:20:14,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:20:14,156 INFO L93 Difference]: Finished difference Result 40248 states and 63087 transitions. [2018-09-14 18:20:14,157 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-14 18:20:14,157 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 250 [2018-09-14 18:20:14,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:20:14,290 INFO L225 Difference]: With dead ends: 40248 [2018-09-14 18:20:14,290 INFO L226 Difference]: Without dead ends: 27838 [2018-09-14 18:20:14,335 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 509 GetRequests, 498 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2018-09-14 18:20:14,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27838 states. [2018-09-14 18:20:15,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27838 to 26946. [2018-09-14 18:20:15,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26946 states. [2018-09-14 18:20:15,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26946 states to 26946 states and 38013 transitions. [2018-09-14 18:20:15,094 INFO L78 Accepts]: Start accepts. Automaton has 26946 states and 38013 transitions. Word has length 250 [2018-09-14 18:20:15,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:20:15,095 INFO L480 AbstractCegarLoop]: Abstraction has 26946 states and 38013 transitions. [2018-09-14 18:20:15,095 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 18:20:15,095 INFO L276 IsEmpty]: Start isEmpty. Operand 26946 states and 38013 transitions. [2018-09-14 18:20:15,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2018-09-14 18:20:15,106 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:20:15,107 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 18:20:15,107 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:20:15,107 INFO L82 PathProgramCache]: Analyzing trace with hash 979448746, now seen corresponding path program 1 times [2018-09-14 18:20:15,108 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:20:15,108 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:20:15,109 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:20:15,109 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:20:15,109 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:20:15,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:20:15,487 WARN L178 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 18:20:16,017 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 132 proven. 82 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 18:20:16,017 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:20:16,017 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 18:20:16,034 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:20:16,035 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:20:16,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:20:16,163 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:20:16,831 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 152 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-09-14 18:20:16,832 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:20:17,161 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 132 proven. 82 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 18:20:17,186 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 18:20:17,187 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2018-09-14 18:20:17,187 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:20:17,188 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 18:20:17,188 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 18:20:17,188 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-09-14 18:20:17,188 INFO L87 Difference]: Start difference. First operand 26946 states and 38013 transitions. Second operand 5 states. [2018-09-14 18:20:41,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:20:41,816 INFO L93 Difference]: Finished difference Result 75826 states and 112478 transitions. [2018-09-14 18:20:41,824 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-14 18:20:41,825 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 325 [2018-09-14 18:20:41,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:20:41,993 INFO L225 Difference]: With dead ends: 75826 [2018-09-14 18:20:41,993 INFO L226 Difference]: Without dead ends: 48886 [2018-09-14 18:20:42,057 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 659 GetRequests, 645 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2018-09-14 18:20:42,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48886 states. [2018-09-14 18:20:42,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48886 to 47921. [2018-09-14 18:20:42,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47921 states. [2018-09-14 18:20:43,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47921 states to 47921 states and 68473 transitions. [2018-09-14 18:20:43,102 INFO L78 Accepts]: Start accepts. Automaton has 47921 states and 68473 transitions. Word has length 325 [2018-09-14 18:20:43,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:20:43,102 INFO L480 AbstractCegarLoop]: Abstraction has 47921 states and 68473 transitions. [2018-09-14 18:20:43,103 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 18:20:43,103 INFO L276 IsEmpty]: Start isEmpty. Operand 47921 states and 68473 transitions. [2018-09-14 18:20:43,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 550 [2018-09-14 18:20:43,127 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:20:43,128 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-14 18:20:43,128 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:20:43,128 INFO L82 PathProgramCache]: Analyzing trace with hash 368098506, now seen corresponding path program 1 times [2018-09-14 18:20:43,129 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:20:43,130 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:20:43,130 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:20:43,130 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:20:43,131 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:20:43,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:20:44,075 INFO L134 CoverageAnalysis]: Checked inductivity of 537 backedges. 366 proven. 86 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-09-14 18:20:44,076 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:20:44,076 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 18:20:44,090 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:20:44,090 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:20:44,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:20:44,242 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:20:44,521 INFO L134 CoverageAnalysis]: Checked inductivity of 537 backedges. 468 proven. 2 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-09-14 18:20:44,522 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:20:44,857 INFO L134 CoverageAnalysis]: Checked inductivity of 537 backedges. 366 proven. 86 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-09-14 18:20:44,878 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:20:44,879 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 18:20:44,895 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:20:44,895 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:20:45,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:20:45,243 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:20:46,125 INFO L134 CoverageAnalysis]: Checked inductivity of 537 backedges. 468 proven. 2 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-09-14 18:20:46,126 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:20:46,628 INFO L134 CoverageAnalysis]: Checked inductivity of 537 backedges. 366 proven. 86 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-09-14 18:20:46,631 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 18:20:46,631 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 12 [2018-09-14 18:20:46,631 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 18:20:46,632 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-14 18:20:46,633 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-14 18:20:46,633 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-09-14 18:20:46,633 INFO L87 Difference]: Start difference. First operand 47921 states and 68473 transitions. Second operand 9 states. [2018-09-14 18:21:21,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:21:21,302 INFO L93 Difference]: Finished difference Result 195262 states and 345391 transitions. [2018-09-14 18:21:21,303 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-09-14 18:21:21,303 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 549 [2018-09-14 18:21:21,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:21:21,926 INFO L225 Difference]: With dead ends: 195262 [2018-09-14 18:21:21,926 INFO L226 Difference]: Without dead ends: 136055 [2018-09-14 18:21:22,286 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2216 GetRequests, 2194 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=126, Invalid=254, Unknown=0, NotChecked=0, Total=380 [2018-09-14 18:21:22,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136055 states. [2018-09-14 18:21:24,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136055 to 134663. [2018-09-14 18:21:24,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134663 states. [2018-09-14 18:21:25,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134663 states to 134663 states and 192535 transitions. [2018-09-14 18:21:25,460 INFO L78 Accepts]: Start accepts. Automaton has 134663 states and 192535 transitions. Word has length 549 [2018-09-14 18:21:25,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:21:25,461 INFO L480 AbstractCegarLoop]: Abstraction has 134663 states and 192535 transitions. [2018-09-14 18:21:25,461 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-14 18:21:25,461 INFO L276 IsEmpty]: Start isEmpty. Operand 134663 states and 192535 transitions. [2018-09-14 18:21:25,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 583 [2018-09-14 18:21:25,476 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:21:25,477 INFO L376 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 18:21:25,477 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:21:25,478 INFO L82 PathProgramCache]: Analyzing trace with hash -766461474, now seen corresponding path program 1 times [2018-09-14 18:21:25,478 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:21:25,479 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:21:25,479 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:21:25,479 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:21:25,479 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:21:25,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:21:25,997 WARN L178 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 18:21:26,996 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-09-14 18:21:26,996 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:21:26,996 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 18:21:27,004 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:21:27,004 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:21:27,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:21:27,165 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:21:27,410 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:21:27,411 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:21:27,598 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:21:27,620 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-14 18:21:27,620 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2018-09-14 18:21:27,621 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:21:27,621 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 18:21:27,621 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 18:21:27,622 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-14 18:21:27,622 INFO L87 Difference]: Start difference. First operand 134663 states and 192535 transitions. Second operand 3 states. [2018-09-14 18:21:42,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:21:42,875 INFO L93 Difference]: Finished difference Result 269323 states and 387441 transitions. [2018-09-14 18:21:42,875 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 18:21:42,875 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 582 [2018-09-14 18:21:42,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:21:43,408 INFO L225 Difference]: With dead ends: 269323 [2018-09-14 18:21:43,408 INFO L226 Difference]: Without dead ends: 134666 [2018-09-14 18:21:43,779 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1172 GetRequests, 1165 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-14 18:21:43,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134666 states. [2018-09-14 18:21:46,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134666 to 134660. [2018-09-14 18:21:46,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134660 states. [2018-09-14 18:21:46,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134660 states to 134660 states and 177828 transitions. [2018-09-14 18:21:46,590 INFO L78 Accepts]: Start accepts. Automaton has 134660 states and 177828 transitions. Word has length 582 [2018-09-14 18:21:46,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:21:46,591 INFO L480 AbstractCegarLoop]: Abstraction has 134660 states and 177828 transitions. [2018-09-14 18:21:46,591 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 18:21:46,592 INFO L276 IsEmpty]: Start isEmpty. Operand 134660 states and 177828 transitions. [2018-09-14 18:21:46,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 879 [2018-09-14 18:21:46,652 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:21:46,653 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 18:21:46,653 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:21:46,654 INFO L82 PathProgramCache]: Analyzing trace with hash 13142892, now seen corresponding path program 1 times [2018-09-14 18:21:46,654 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:21:46,655 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:21:46,655 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:21:46,655 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:21:46,655 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:21:46,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:21:47,511 INFO L134 CoverageAnalysis]: Checked inductivity of 463 backedges. 292 proven. 86 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-09-14 18:21:47,511 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:21:47,512 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 18:21:47,522 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:21:47,523 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:21:47,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:21:47,764 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:21:48,874 INFO L134 CoverageAnalysis]: Checked inductivity of 463 backedges. 394 proven. 2 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-09-14 18:21:48,874 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:21:49,504 INFO L134 CoverageAnalysis]: Checked inductivity of 463 backedges. 292 proven. 86 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-09-14 18:21:49,526 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:21:49,527 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 18:21:49,552 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:21:49,552 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:21:50,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:21:50,092 INFO L273 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2018-09-14 18:21:51,023 INFO L134 CoverageAnalysis]: Checked inductivity of 463 backedges. 394 proven. 2 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-09-14 18:21:51,023 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:21:51,026 WARN L186 SmtUtils]: Removed 1 from assertion stack [2018-09-14 18:21:51,026 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-09-14 18:21:51,228 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 18:21:51,228 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-14 18:21:51,234 WARN L206 ceAbstractionStarter]: Timeout [2018-09-14 18:21:51,234 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.09 06:21:51 BoogieIcfgContainer [2018-09-14 18:21:51,234 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-14 18:21:51,235 INFO L168 Benchmark]: Toolchain (without parser) took 230768.32 ms. Allocated memory was 1.5 GB in the beginning and 3.6 GB in the end (delta: 2.0 GB). Free memory was 1.4 GB in the beginning and 1.7 GB in the end (delta: -321.3 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2018-09-14 18:21:51,236 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-14 18:21:51,237 INFO L168 Benchmark]: CACSL2BoogieTranslator took 4065.47 ms. Allocated memory was 1.5 GB in the beginning and 1.7 GB in the end (delta: 176.7 MB). Free memory was 1.4 GB in the beginning and 1.5 GB in the end (delta: -101.0 MB). Peak memory consumption was 478.0 MB. Max. memory is 7.1 GB. [2018-09-14 18:21:51,238 INFO L168 Benchmark]: Boogie Procedure Inliner took 356.10 ms. Allocated memory is still 1.7 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 46.9 MB). Peak memory consumption was 46.9 MB. Max. memory is 7.1 GB. [2018-09-14 18:21:51,239 INFO L168 Benchmark]: Boogie Preprocessor took 1759.42 ms. Allocated memory was 1.7 GB in the beginning and 2.6 GB in the end (delta: 881.3 MB). Free memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: -875.2 MB). Peak memory consumption was 130.0 MB. Max. memory is 7.1 GB. [2018-09-14 18:21:51,240 INFO L168 Benchmark]: RCFGBuilder took 19152.10 ms. Allocated memory was 2.6 GB in the beginning and 2.8 GB in the end (delta: 228.1 MB). Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 156.8 MB). Peak memory consumption was 996.5 MB. Max. memory is 7.1 GB. [2018-09-14 18:21:51,241 INFO L168 Benchmark]: TraceAbstraction took 205425.81 ms. Allocated memory was 2.8 GB in the beginning and 3.6 GB in the end (delta: 742.9 MB). Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 451.3 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-09-14 18:21:51,246 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 4065.47 ms. Allocated memory was 1.5 GB in the beginning and 1.7 GB in the end (delta: 176.7 MB). Free memory was 1.4 GB in the beginning and 1.5 GB in the end (delta: -101.0 MB). Peak memory consumption was 478.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 356.10 ms. Allocated memory is still 1.7 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 46.9 MB). Peak memory consumption was 46.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 1759.42 ms. Allocated memory was 1.7 GB in the beginning and 2.6 GB in the end (delta: 881.3 MB). Free memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: -875.2 MB). Peak memory consumption was 130.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 19152.10 ms. Allocated memory was 2.6 GB in the beginning and 2.8 GB in the end (delta: 228.1 MB). Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 156.8 MB). Peak memory consumption was 996.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 205425.81 ms. Allocated memory was 2.8 GB in the beginning and 3.6 GB in the end (delta: 742.9 MB). Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 451.3 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 214]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 214). Cancelled while BasicCegarLoop was analyzing trace of length 879 with TraceHistMax 4, while TraceCheckSpWp was constructing backward predicates, while PartialQuantifierElimination was doing sequential composition of 81 TransFormulas, while SimplifyDDAWithTimeout was simplifying term of DAG size 1. - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 1778 locations, 1 error locations. TIMEOUT Result, 205.3s OverallTime, 8 OverallIterations, 4 TraceHistogramMax, 181.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 4844 SDtfs, 41703 SDslu, 5246 SDs, 0 SdLazy, 66178 SolverSat, 19119 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 153.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4581 GetRequests, 4511 SyntacticMatches, 12 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 3.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=134663occurred in iteration=6, 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: 8.5s AutomataMinimizationTime, 7 MinimizatonAttempts, 3682 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 7.6s InterpolantComputationTime, 4340 NumberOfCodeBlocks, 4340 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 6578 ConstructedInterpolants, 0 QuantifiedInterpolants, 7131851 SizeOfPredicates, 5 NumberOfNonLiveVariables, 3383 ConjunctsInSsa, 28 ConjunctsInUnsatCore, 17 InterpolantComputations, 7 PerfectInterpolantSequences, 3677/4329 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem19_label02_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-14_18-21-51-271.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem19_label02_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-14_18-21-51-271.csv Completed graceful shutdown