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_label39_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dace188-m [2018-09-14 18:23:48,327 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-14 18:23:48,330 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-14 18:23:48,348 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-14 18:23:48,350 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-14 18:23:48,351 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-14 18:23:48,352 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-14 18:23:48,354 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-14 18:23:48,355 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-14 18:23:48,356 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-14 18:23:48,357 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-14 18:23:48,357 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-14 18:23:48,358 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-14 18:23:48,359 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-14 18:23:48,361 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-14 18:23:48,361 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-14 18:23:48,362 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-14 18:23:48,364 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-14 18:23:48,366 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-14 18:23:48,367 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-14 18:23:48,368 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-14 18:23:48,370 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-14 18:23:48,372 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-14 18:23:48,373 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-14 18:23:48,373 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-14 18:23:48,374 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-14 18:23:48,375 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-14 18:23:48,375 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-14 18:23:48,377 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-14 18:23:48,378 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-14 18:23:48,378 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-14 18:23:48,379 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-14 18:23:48,379 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-14 18:23:48,379 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-14 18:23:48,380 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-14 18:23:48,381 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-14 18:23:48,381 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 18:23:48,403 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-14 18:23:48,404 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-14 18:23:48,405 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-14 18:23:48,405 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-14 18:23:48,405 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-14 18:23:48,405 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-14 18:23:48,406 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-14 18:23:48,406 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-14 18:23:48,406 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-14 18:23:48,406 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-14 18:23:48,407 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-14 18:23:48,408 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-14 18:23:48,408 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-14 18:23:48,408 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-14 18:23:48,408 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-14 18:23:48,409 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-14 18:23:48,410 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-14 18:23:48,410 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-14 18:23:48,410 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-14 18:23:48,410 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-14 18:23:48,410 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-14 18:23:48,411 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-14 18:23:48,411 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-14 18:23:48,411 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-14 18:23:48,411 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-14 18:23:48,412 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-14 18:23:48,413 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-14 18:23:48,413 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-14 18:23:48,413 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-14 18:23:48,413 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-14 18:23:48,414 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-14 18:23:48,414 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-14 18:23:48,414 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-14 18:23:48,480 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-14 18:23:48,496 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-14 18:23:48,502 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-14 18:23:48,504 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-14 18:23:48,504 INFO L276 PluginConnector]: CDTParser initialized [2018-09-14 18:23:48,505 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label39_true-unreach-call.c [2018-09-14 18:23:48,898 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f330c404/76bedb70f3204a2f9c1be31d33121b99/FLAG507d57864 [2018-09-14 18:23:49,508 INFO L277 CDTParser]: Found 1 translation units. [2018-09-14 18:23:49,509 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label39_true-unreach-call.c [2018-09-14 18:23:49,556 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f330c404/76bedb70f3204a2f9c1be31d33121b99/FLAG507d57864 [2018-09-14 18:23:49,571 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f330c404/76bedb70f3204a2f9c1be31d33121b99 [2018-09-14 18:23:49,583 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-14 18:23:49,586 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-14 18:23:49,588 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-14 18:23:49,588 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-14 18:23:49,595 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-14 18:23:49,596 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 06:23:49" (1/1) ... [2018-09-14 18:23:49,599 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49f06a43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:23:49, skipping insertion in model container [2018-09-14 18:23:49,600 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 06:23:49" (1/1) ... [2018-09-14 18:23:49,612 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-14 18:23:51,635 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 18:23:51,654 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-14 18:23:52,669 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 18:23:53,443 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:23:53 WrapperNode [2018-09-14 18:23:53,443 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-14 18:23:53,444 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-14 18:23:53,444 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-14 18:23:53,444 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-14 18:23:53,455 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:23:53" (1/1) ... [2018-09-14 18:23:53,611 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:23:53" (1/1) ... [2018-09-14 18:23:53,734 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-14 18:23:53,734 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-14 18:23:53,735 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-14 18:23:53,735 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-14 18:23:54,974 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:23:53" (1/1) ... [2018-09-14 18:23:54,974 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:23:53" (1/1) ... [2018-09-14 18:23:55,118 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:23:53" (1/1) ... [2018-09-14 18:23:55,118 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:23:53" (1/1) ... [2018-09-14 18:23:55,442 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:23:53" (1/1) ... [2018-09-14 18:23:55,496 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:23:53" (1/1) ... [2018-09-14 18:23:55,618 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:23:53" (1/1) ... [2018-09-14 18:23:55,816 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-14 18:23:55,816 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-14 18:23:55,816 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-14 18:23:55,817 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-14 18:23:55,818 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:23:53" (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 18:23:55,895 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-14 18:23:55,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-14 18:23:55,895 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2018-09-14 18:23:55,896 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2018-09-14 18:23:55,896 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2018-09-14 18:23:55,896 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2018-09-14 18:23:55,896 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-09-14 18:23:55,896 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-09-14 18:23:55,897 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-09-14 18:23:55,897 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-09-14 18:23:55,897 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-09-14 18:23:55,897 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-09-14 18:23:55,898 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-14 18:23:55,898 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-14 18:23:55,899 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-14 18:23:55,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-14 18:23:55,899 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-14 18:23:55,899 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-14 18:24:13,789 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-14 18:24:13,789 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 06:24:13 BoogieIcfgContainer [2018-09-14 18:24:13,789 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-14 18:24:13,790 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-14 18:24:13,790 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-14 18:24:13,794 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-14 18:24:13,794 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.09 06:23:49" (1/3) ... [2018-09-14 18:24:13,795 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12590736 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 06:24:13, skipping insertion in model container [2018-09-14 18:24:13,795 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:23:53" (2/3) ... [2018-09-14 18:24:13,795 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12590736 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 06:24:13, skipping insertion in model container [2018-09-14 18:24:13,796 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 06:24:13" (3/3) ... [2018-09-14 18:24:13,797 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label39_true-unreach-call.c [2018-09-14 18:24:13,807 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-14 18:24:13,818 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-14 18:24:13,892 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-14 18:24:13,893 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-14 18:24:13,893 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-14 18:24:13,893 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-14 18:24:13,893 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-14 18:24:13,893 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-14 18:24:13,893 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-14 18:24:13,893 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-14 18:24:13,894 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-14 18:24:13,952 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states. [2018-09-14 18:24:13,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-09-14 18:24:13,960 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:24:13,962 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] [2018-09-14 18:24:13,963 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:24:13,967 INFO L82 PathProgramCache]: Analyzing trace with hash -1284410716, now seen corresponding path program 1 times [2018-09-14 18:24:13,969 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:24:14,025 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:24:14,025 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:24:14,025 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:24:14,025 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:24:14,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:24:14,372 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 18:24:14,487 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 18:24:14,490 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 18:24:14,490 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-14 18:24:14,490 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:24:14,502 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 18:24:14,536 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 18:24:14,537 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 18:24:14,543 INFO L87 Difference]: Start difference. First operand 1778 states. Second operand 3 states. [2018-09-14 18:24:29,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:24:29,267 INFO L93 Difference]: Finished difference Result 4998 states and 9417 transitions. [2018-09-14 18:24:29,268 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 18:24:29,269 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 38 [2018-09-14 18:24:29,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:24:29,321 INFO L225 Difference]: With dead ends: 4998 [2018-09-14 18:24:29,322 INFO L226 Difference]: Without dead ends: 3218 [2018-09-14 18:24:29,337 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 18:24:29,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3218 states. [2018-09-14 18:24:29,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3218 to 3215. [2018-09-14 18:24:29,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3215 states. [2018-09-14 18:24:29,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3215 states to 3215 states and 5854 transitions. [2018-09-14 18:24:29,579 INFO L78 Accepts]: Start accepts. Automaton has 3215 states and 5854 transitions. Word has length 38 [2018-09-14 18:24:29,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:24:29,579 INFO L480 AbstractCegarLoop]: Abstraction has 3215 states and 5854 transitions. [2018-09-14 18:24:29,581 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 18:24:29,581 INFO L276 IsEmpty]: Start isEmpty. Operand 3215 states and 5854 transitions. [2018-09-14 18:24:29,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-09-14 18:24:29,590 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:24:29,590 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:24:29,591 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:24:29,591 INFO L82 PathProgramCache]: Analyzing trace with hash 1473327961, now seen corresponding path program 1 times [2018-09-14 18:24:29,591 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:24:29,596 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:24:29,597 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:24:29,597 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:24:29,597 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:24:29,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:24:29,991 WARN L178 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 18:24:30,392 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:24:30,393 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 18:24:30,393 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 18:24:30,393 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:24:30,395 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 18:24:30,395 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 18:24:30,395 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-14 18:24:30,396 INFO L87 Difference]: Start difference. First operand 3215 states and 5854 transitions. Second operand 6 states. [2018-09-14 18:24:58,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:24:58,823 INFO L93 Difference]: Finished difference Result 9340 states and 16946 transitions. [2018-09-14 18:24:58,825 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 18:24:58,825 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 110 [2018-09-14 18:24:58,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:24:58,858 INFO L225 Difference]: With dead ends: 9340 [2018-09-14 18:24:58,858 INFO L226 Difference]: Without dead ends: 6131 [2018-09-14 18:24:58,868 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-14 18:24:58,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6131 states. [2018-09-14 18:24:59,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6131 to 6091. [2018-09-14 18:24:59,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6091 states. [2018-09-14 18:24:59,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6091 states to 6091 states and 9637 transitions. [2018-09-14 18:24:59,044 INFO L78 Accepts]: Start accepts. Automaton has 6091 states and 9637 transitions. Word has length 110 [2018-09-14 18:24:59,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:24:59,044 INFO L480 AbstractCegarLoop]: Abstraction has 6091 states and 9637 transitions. [2018-09-14 18:24:59,044 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 18:24:59,045 INFO L276 IsEmpty]: Start isEmpty. Operand 6091 states and 9637 transitions. [2018-09-14 18:24:59,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-09-14 18:24:59,048 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:24:59,048 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:24:59,048 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:24:59,049 INFO L82 PathProgramCache]: Analyzing trace with hash 887803694, now seen corresponding path program 1 times [2018-09-14 18:24:59,049 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:24:59,050 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:24:59,050 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:24:59,050 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:24:59,050 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:24:59,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:24:59,286 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 18:24:59,331 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:24:59,331 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 18:24:59,332 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 18:24:59,332 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:24:59,332 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 18:24:59,333 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 18:24:59,333 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-14 18:24:59,333 INFO L87 Difference]: Start difference. First operand 6091 states and 9637 transitions. Second operand 6 states. [2018-09-14 18:25:25,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:25:25,014 INFO L93 Difference]: Finished difference Result 21088 states and 34222 transitions. [2018-09-14 18:25:25,017 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 18:25:25,017 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 112 [2018-09-14 18:25:25,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:25:25,097 INFO L225 Difference]: With dead ends: 21088 [2018-09-14 18:25:25,097 INFO L226 Difference]: Without dead ends: 15003 [2018-09-14 18:25:25,123 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-14 18:25:25,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15003 states. [2018-09-14 18:25:25,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15003 to 14814. [2018-09-14 18:25:25,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14814 states. [2018-09-14 18:25:25,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14814 states to 14814 states and 22420 transitions. [2018-09-14 18:25:25,815 INFO L78 Accepts]: Start accepts. Automaton has 14814 states and 22420 transitions. Word has length 112 [2018-09-14 18:25:25,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:25:25,815 INFO L480 AbstractCegarLoop]: Abstraction has 14814 states and 22420 transitions. [2018-09-14 18:25:25,815 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 18:25:25,816 INFO L276 IsEmpty]: Start isEmpty. Operand 14814 states and 22420 transitions. [2018-09-14 18:25:25,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-09-14 18:25:25,821 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:25:25,821 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:25:25,822 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:25:25,822 INFO L82 PathProgramCache]: Analyzing trace with hash 235338043, now seen corresponding path program 1 times [2018-09-14 18:25:25,822 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:25:25,823 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:25:25,823 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:25:25,823 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:25:25,823 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:25:25,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:25:26,194 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:25:26,194 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 18:25:26,195 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-14 18:25:26,195 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:25:26,195 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 18:25:26,196 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 18:25:26,196 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-14 18:25:26,196 INFO L87 Difference]: Start difference. First operand 14814 states and 22420 transitions. Second operand 5 states. [2018-09-14 18:25:50,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:25:50,734 INFO L93 Difference]: Finished difference Result 45421 states and 70728 transitions. [2018-09-14 18:25:50,741 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-14 18:25:50,742 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 143 [2018-09-14 18:25:50,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:25:50,865 INFO L225 Difference]: With dead ends: 45421 [2018-09-14 18:25:50,865 INFO L226 Difference]: Without dead ends: 30613 [2018-09-14 18:25:50,918 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-09-14 18:25:50,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30613 states. [2018-09-14 18:25:51,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30613 to 30143. [2018-09-14 18:25:51,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30143 states. [2018-09-14 18:25:51,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30143 states to 30143 states and 41642 transitions. [2018-09-14 18:25:51,579 INFO L78 Accepts]: Start accepts. Automaton has 30143 states and 41642 transitions. Word has length 143 [2018-09-14 18:25:51,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:25:51,579 INFO L480 AbstractCegarLoop]: Abstraction has 30143 states and 41642 transitions. [2018-09-14 18:25:51,579 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 18:25:51,580 INFO L276 IsEmpty]: Start isEmpty. Operand 30143 states and 41642 transitions. [2018-09-14 18:25:51,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2018-09-14 18:25:51,589 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:25:51,589 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-14 18:25:51,593 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:25:51,594 INFO L82 PathProgramCache]: Analyzing trace with hash -151637188, now seen corresponding path program 1 times [2018-09-14 18:25:51,594 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:25:51,594 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:25:51,595 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:25:51,595 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:25:51,595 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:25:51,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:25:51,891 WARN L178 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 18:25:52,165 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 62 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 18:25:52,165 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:25:52,165 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 18:25:52,174 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:25:52,175 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:25:52,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:25:52,280 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:25:52,410 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-09-14 18:25:52,410 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:25:52,617 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-09-14 18:25:52,649 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-14 18:25:52,649 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 8 [2018-09-14 18:25:52,649 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:25:52,650 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 18:25:52,651 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 18:25:52,651 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-09-14 18:25:52,651 INFO L87 Difference]: Start difference. First operand 30143 states and 41642 transitions. Second operand 3 states. [2018-09-14 18:26:04,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:26:04,660 INFO L93 Difference]: Finished difference Result 71999 states and 102353 transitions. [2018-09-14 18:26:04,660 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 18:26:04,660 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 209 [2018-09-14 18:26:04,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:26:04,844 INFO L225 Difference]: With dead ends: 71999 [2018-09-14 18:26:04,844 INFO L226 Difference]: Without dead ends: 41862 [2018-09-14 18:26:04,927 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 424 GetRequests, 417 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-09-14 18:26:04,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41862 states. [2018-09-14 18:26:05,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41862 to 41741. [2018-09-14 18:26:05,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41741 states. [2018-09-14 18:26:06,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41741 states to 41741 states and 55715 transitions. [2018-09-14 18:26:06,038 INFO L78 Accepts]: Start accepts. Automaton has 41741 states and 55715 transitions. Word has length 209 [2018-09-14 18:26:06,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:26:06,038 INFO L480 AbstractCegarLoop]: Abstraction has 41741 states and 55715 transitions. [2018-09-14 18:26:06,039 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 18:26:06,039 INFO L276 IsEmpty]: Start isEmpty. Operand 41741 states and 55715 transitions. [2018-09-14 18:26:06,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2018-09-14 18:26:06,055 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:26:06,056 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 18:26:06,056 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:26:06,056 INFO L82 PathProgramCache]: Analyzing trace with hash 623750170, now seen corresponding path program 1 times [2018-09-14 18:26:06,056 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:26:06,057 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:26:06,057 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:26:06,058 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:26:06,058 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:26:06,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:26:06,820 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 62 proven. 109 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 18:26:06,821 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:26:06,821 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 18:26:06,833 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:26:06,834 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:26:06,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:26:06,953 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:26:07,150 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 142 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2018-09-14 18:26:07,151 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:26:07,433 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 62 proven. 2 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2018-09-14 18:26:07,471 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 18:26:07,472 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [7, 3] total 8 [2018-09-14 18:26:07,472 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:26:07,472 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 18:26:07,473 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 18:26:07,473 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-09-14 18:26:07,473 INFO L87 Difference]: Start difference. First operand 41741 states and 55715 transitions. Second operand 3 states. [2018-09-14 18:26:21,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:26:21,330 INFO L93 Difference]: Finished difference Result 123007 states and 171913 transitions. [2018-09-14 18:26:21,332 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 18:26:21,332 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 276 [2018-09-14 18:26:21,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:26:21,584 INFO L225 Difference]: With dead ends: 123007 [2018-09-14 18:26:21,585 INFO L226 Difference]: Without dead ends: 81272 [2018-09-14 18:26:21,689 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 559 GetRequests, 553 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-09-14 18:26:21,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81272 states. [2018-09-14 18:26:22,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81272 to 81165. [2018-09-14 18:26:22,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81165 states. [2018-09-14 18:26:23,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81165 states to 81165 states and 111273 transitions. [2018-09-14 18:26:23,024 INFO L78 Accepts]: Start accepts. Automaton has 81165 states and 111273 transitions. Word has length 276 [2018-09-14 18:26:23,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:26:23,025 INFO L480 AbstractCegarLoop]: Abstraction has 81165 states and 111273 transitions. [2018-09-14 18:26:23,025 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 18:26:23,025 INFO L276 IsEmpty]: Start isEmpty. Operand 81165 states and 111273 transitions. [2018-09-14 18:26:23,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2018-09-14 18:26:23,048 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:26:23,048 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 18:26:23,049 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:26:23,049 INFO L82 PathProgramCache]: Analyzing trace with hash 2070331036, now seen corresponding path program 1 times [2018-09-14 18:26:23,049 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:26:23,050 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:26:23,050 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:26:23,050 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:26:23,050 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:26:23,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:26:23,793 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 62 proven. 109 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 18:26:23,794 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:26:23,794 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) [2018-09-14 18:26:23,807 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:26:23,807 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 18:26:23,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:26:23,898 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:26:24,775 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2018-09-14 18:26:24,775 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:26:25,278 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 62 proven. 109 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 18:26:25,310 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 18:26:25,311 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [7, 5] total 12 [2018-09-14 18:26:25,311 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:26:25,312 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 18:26:25,312 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 18:26:25,313 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2018-09-14 18:26:25,313 INFO L87 Difference]: Start difference. First operand 81165 states and 111273 transitions. Second operand 5 states. [2018-09-14 18:26:50,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:26:50,377 INFO L93 Difference]: Finished difference Result 210433 states and 306322 transitions. [2018-09-14 18:26:50,378 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-14 18:26:50,378 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 276 [2018-09-14 18:26:50,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:26:50,764 INFO L225 Difference]: With dead ends: 210433 [2018-09-14 18:26:50,764 INFO L226 Difference]: Without dead ends: 129274 [2018-09-14 18:26:50,903 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 562 GetRequests, 548 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2018-09-14 18:26:50,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129274 states. [2018-09-14 18:26:52,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129274 to 127907. [2018-09-14 18:26:52,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127907 states. [2018-09-14 18:26:53,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127907 states to 127907 states and 177814 transitions. [2018-09-14 18:26:53,361 INFO L78 Accepts]: Start accepts. Automaton has 127907 states and 177814 transitions. Word has length 276 [2018-09-14 18:26:53,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:26:53,362 INFO L480 AbstractCegarLoop]: Abstraction has 127907 states and 177814 transitions. [2018-09-14 18:26:53,362 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 18:26:53,362 INFO L276 IsEmpty]: Start isEmpty. Operand 127907 states and 177814 transitions. [2018-09-14 18:26:53,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2018-09-14 18:26:53,405 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:26:53,405 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:26:53,406 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:26:53,406 INFO L82 PathProgramCache]: Analyzing trace with hash -2080127799, now seen corresponding path program 1 times [2018-09-14 18:26:53,406 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:26:53,407 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:26:53,407 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:26:53,407 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:26:53,407 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:26:53,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:26:53,684 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 93 proven. 145 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2018-09-14 18:26:53,684 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:26:53,684 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 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 18:26:53,693 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:26:53,693 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:26:53,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:26:53,791 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:26:53,887 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 184 proven. 0 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2018-09-14 18:26:53,887 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:26:54,255 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 93 proven. 145 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2018-09-14 18:26:54,276 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 18:26:54,276 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 9 [2018-09-14 18:26:54,276 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:26:54,276 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 18:26:54,277 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 18:26:54,277 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-09-14 18:26:54,277 INFO L87 Difference]: Start difference. First operand 127907 states and 177814 transitions. Second operand 5 states. [2018-09-14 18:27:17,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:27:17,766 INFO L93 Difference]: Finished difference Result 379781 states and 556192 transitions. [2018-09-14 18:27:17,766 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-14 18:27:17,767 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 298 [2018-09-14 18:27:17,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:27:18,572 INFO L225 Difference]: With dead ends: 379781 [2018-09-14 18:27:18,572 INFO L226 Difference]: Without dead ends: 251880 [2018-09-14 18:27:18,758 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 605 GetRequests, 594 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2018-09-14 18:27:18,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251880 states. [2018-09-14 18:27:22,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251880 to 250289. [2018-09-14 18:27:22,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250289 states. [2018-09-14 18:27:23,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250289 states to 250289 states and 340509 transitions. [2018-09-14 18:27:23,522 INFO L78 Accepts]: Start accepts. Automaton has 250289 states and 340509 transitions. Word has length 298 [2018-09-14 18:27:23,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:27:23,522 INFO L480 AbstractCegarLoop]: Abstraction has 250289 states and 340509 transitions. [2018-09-14 18:27:23,522 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 18:27:23,523 INFO L276 IsEmpty]: Start isEmpty. Operand 250289 states and 340509 transitions. [2018-09-14 18:27:23,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 533 [2018-09-14 18:27:23,549 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:27:23,550 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:27:23,550 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:27:23,551 INFO L82 PathProgramCache]: Analyzing trace with hash -250502096, now seen corresponding path program 1 times [2018-09-14 18:27:23,551 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:27:23,552 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:27:23,552 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:27:23,552 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:27:23,552 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:27:23,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:27:24,159 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 261 proven. 104 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2018-09-14 18:27:24,159 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:27:24,159 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 18:27:25,683 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:27:25,683 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:27:25,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:27:25,842 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:27:26,020 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 434 proven. 2 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2018-09-14 18:27:26,020 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:27:26,280 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 261 proven. 104 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2018-09-14 18:27:26,301 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:27:26,301 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 7 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 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 18:27:26,316 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:27:26,317 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:27:26,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:27:26,643 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:27:26,941 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 434 proven. 2 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2018-09-14 18:27:26,941 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:27:28,403 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 261 proven. 104 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2018-09-14 18:27:28,405 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 18:27:28,406 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 12 [2018-09-14 18:27:28,406 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 18:27:28,407 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-14 18:27:28,408 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-14 18:27:28,408 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-09-14 18:27:28,408 INFO L87 Difference]: Start difference. First operand 250289 states and 340509 transitions. Second operand 9 states. Received shutdown request... [2018-09-14 18:27:39,378 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-09-14 18:27:39,379 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-14 18:27:39,385 WARN L206 ceAbstractionStarter]: Timeout [2018-09-14 18:27:39,385 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.09 06:27:39 BoogieIcfgContainer [2018-09-14 18:27:39,385 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-14 18:27:39,386 INFO L168 Benchmark]: Toolchain (without parser) took 229802.85 ms. Allocated memory was 1.5 GB in the beginning and 4.3 GB in the end (delta: 2.8 GB). Free memory was 1.4 GB in the beginning and 3.6 GB in the end (delta: -2.2 GB). Peak memory consumption was 608.5 MB. Max. memory is 7.1 GB. [2018-09-14 18:27:39,387 INFO L168 Benchmark]: CDTParser took 0.19 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 18:27:39,388 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3855.77 ms. Allocated memory was 1.5 GB in the beginning and 1.8 GB in the end (delta: 220.2 MB). Free memory was 1.4 GB in the beginning and 1.6 GB in the end (delta: -139.3 MB). Peak memory consumption was 489.3 MB. Max. memory is 7.1 GB. [2018-09-14 18:27:39,389 INFO L168 Benchmark]: Boogie Procedure Inliner took 290.06 ms. Allocated memory is still 1.8 GB. Free memory was 1.6 GB in the beginning and 1.5 GB in the end (delta: 65.9 MB). Peak memory consumption was 65.9 MB. Max. memory is 7.1 GB. [2018-09-14 18:27:39,390 INFO L168 Benchmark]: Boogie Preprocessor took 2081.55 ms. Allocated memory was 1.8 GB in the beginning and 2.6 GB in the end (delta: 802.2 MB). Free memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: -811.2 MB). Peak memory consumption was 126.5 MB. Max. memory is 7.1 GB. [2018-09-14 18:27:39,391 INFO L168 Benchmark]: RCFGBuilder took 17973.24 ms. Allocated memory was 2.6 GB in the beginning and 2.9 GB in the end (delta: 325.1 MB). Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 69.0 MB). Peak memory consumption was 998.8 MB. Max. memory is 7.1 GB. [2018-09-14 18:27:39,392 INFO L168 Benchmark]: TraceAbstraction took 205595.06 ms. Allocated memory was 2.9 GB in the beginning and 4.3 GB in the end (delta: 1.4 GB). Free memory was 2.2 GB in the beginning and 3.6 GB in the end (delta: -1.4 GB). Peak memory consumption was 76.6 MB. Max. memory is 7.1 GB. [2018-09-14 18:27:39,399 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 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 3855.77 ms. Allocated memory was 1.5 GB in the beginning and 1.8 GB in the end (delta: 220.2 MB). Free memory was 1.4 GB in the beginning and 1.6 GB in the end (delta: -139.3 MB). Peak memory consumption was 489.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 290.06 ms. Allocated memory is still 1.8 GB. Free memory was 1.6 GB in the beginning and 1.5 GB in the end (delta: 65.9 MB). Peak memory consumption was 65.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 2081.55 ms. Allocated memory was 1.8 GB in the beginning and 2.6 GB in the end (delta: 802.2 MB). Free memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: -811.2 MB). Peak memory consumption was 126.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 17973.24 ms. Allocated memory was 2.6 GB in the beginning and 2.9 GB in the end (delta: 325.1 MB). Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 69.0 MB). Peak memory consumption was 998.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 205595.06 ms. Allocated memory was 2.9 GB in the beginning and 4.3 GB in the end (delta: 1.4 GB). Free memory was 2.2 GB in the beginning and 3.6 GB in the end (delta: -1.4 GB). Peak memory consumption was 76.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 109]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 109). Cancelled while BasicCegarLoop was constructing difference of abstraction (250289states) and FLOYD_HOARE automaton (currently 10 states, 9 states before enhancement), while ReachableStatesComputation was computing reachable states (28956 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 1778 locations, 1 error locations. TIMEOUT Result, 205.5s OverallTime, 9 OverallIterations, 4 TraceHistogramMax, 181.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 6097 SDtfs, 40957 SDslu, 4884 SDs, 0 SdLazy, 74499 SolverSat, 17289 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 148.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4324 GetRequests, 4243 SyntacticMatches, 11 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 4.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=250289occurred in iteration=8, 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: 11.4s AutomataMinimizationTime, 8 MinimizatonAttempts, 3888 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 8.8s InterpolantComputationTime, 4117 NumberOfCodeBlocks, 4117 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 6219 ConstructedInterpolants, 0 QuantifiedInterpolants, 5799670 SizeOfPredicates, 4 NumberOfNonLiveVariables, 3526 ConjunctsInSsa, 28 ConjunctsInUnsatCore, 21 InterpolantComputations, 9 PerfectInterpolantSequences, 3848/4848 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_label39_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-14_18-27-39-415.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem19_label39_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-14_18-27-39-415.csv Completed graceful shutdown