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/Problem13_label17_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dace188-m [2018-09-14 17:30:00,544 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-14 17:30:00,546 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-14 17:30:00,558 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-14 17:30:00,559 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-14 17:30:00,560 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-14 17:30:00,561 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-14 17:30:00,563 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-14 17:30:00,565 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-14 17:30:00,566 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-14 17:30:00,567 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-14 17:30:00,567 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-14 17:30:00,569 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-14 17:30:00,570 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-14 17:30:00,574 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-14 17:30:00,575 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-14 17:30:00,576 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-14 17:30:00,581 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-14 17:30:00,590 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-14 17:30:00,592 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-14 17:30:00,593 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-14 17:30:00,597 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-14 17:30:00,602 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-14 17:30:00,603 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-14 17:30:00,603 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-14 17:30:00,606 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-14 17:30:00,608 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-14 17:30:00,609 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-14 17:30:00,610 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-14 17:30:00,611 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-14 17:30:00,611 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-14 17:30:00,615 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-14 17:30:00,615 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-14 17:30:00,615 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-14 17:30:00,616 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-14 17:30:00,617 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-14 17:30:00,619 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 17:30:00,638 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-14 17:30:00,638 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-14 17:30:00,639 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-14 17:30:00,640 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-14 17:30:00,640 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-14 17:30:00,640 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-14 17:30:00,640 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-14 17:30:00,640 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-14 17:30:00,641 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-14 17:30:00,641 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-14 17:30:00,641 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-14 17:30:00,642 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-14 17:30:00,642 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-14 17:30:00,642 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-14 17:30:00,643 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-14 17:30:00,643 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-14 17:30:00,643 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-14 17:30:00,643 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-14 17:30:00,643 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-14 17:30:00,644 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-14 17:30:00,644 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-14 17:30:00,644 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-14 17:30:00,644 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-14 17:30:00,644 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-14 17:30:00,645 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-14 17:30:00,645 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-14 17:30:00,645 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-14 17:30:00,645 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-14 17:30:00,646 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-14 17:30:00,646 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-14 17:30:00,646 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-14 17:30:00,646 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-14 17:30:00,646 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-14 17:30:00,711 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-14 17:30:00,729 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-14 17:30:00,736 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-14 17:30:00,738 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-14 17:30:00,739 INFO L276 PluginConnector]: CDTParser initialized [2018-09-14 17:30:00,740 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label17_true-unreach-call.c [2018-09-14 17:30:01,122 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe002f47d/0a58cb545581493ba91d275ec8420de8/FLAGc09b89ab5 [2018-09-14 17:30:01,610 INFO L277 CDTParser]: Found 1 translation units. [2018-09-14 17:30:01,611 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label17_true-unreach-call.c [2018-09-14 17:30:01,650 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe002f47d/0a58cb545581493ba91d275ec8420de8/FLAGc09b89ab5 [2018-09-14 17:30:01,672 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe002f47d/0a58cb545581493ba91d275ec8420de8 [2018-09-14 17:30:01,684 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-14 17:30:01,688 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-14 17:30:01,691 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-14 17:30:01,691 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-14 17:30:01,700 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-14 17:30:01,701 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 05:30:01" (1/1) ... [2018-09-14 17:30:01,705 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@359f2bac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:30:01, skipping insertion in model container [2018-09-14 17:30:01,705 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 05:30:01" (1/1) ... [2018-09-14 17:30:01,718 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-14 17:30:03,134 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 17:30:03,155 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-14 17:30:03,938 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 17:30:04,309 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:30:04 WrapperNode [2018-09-14 17:30:04,310 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-14 17:30:04,311 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-14 17:30:04,311 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-14 17:30:04,311 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-14 17:30:04,320 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:30:04" (1/1) ... [2018-09-14 17:30:04,452 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:30:04" (1/1) ... [2018-09-14 17:30:04,661 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-14 17:30:04,662 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-14 17:30:04,662 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-14 17:30:04,662 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-14 17:30:05,490 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:30:04" (1/1) ... [2018-09-14 17:30:05,490 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:30:04" (1/1) ... [2018-09-14 17:30:05,540 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:30:04" (1/1) ... [2018-09-14 17:30:05,541 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:30:04" (1/1) ... [2018-09-14 17:30:05,813 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:30:04" (1/1) ... [2018-09-14 17:30:05,862 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:30:04" (1/1) ... [2018-09-14 17:30:05,945 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:30:04" (1/1) ... [2018-09-14 17:30:06,011 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-14 17:30:06,012 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-14 17:30:06,012 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-14 17:30:06,012 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-14 17:30:06,014 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:30:04" (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 17:30:06,093 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-14 17:30:06,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-14 17:30:06,093 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-09-14 17:30:06,093 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-09-14 17:30:06,094 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-09-14 17:30:06,094 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-09-14 17:30:06,094 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-09-14 17:30:06,094 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-09-14 17:30:06,094 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-14 17:30:06,094 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-14 17:30:06,095 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-14 17:30:06,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-14 17:30:06,095 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-14 17:30:06,095 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-14 17:30:16,813 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-14 17:30:16,814 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 05:30:16 BoogieIcfgContainer [2018-09-14 17:30:16,814 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-14 17:30:16,815 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-14 17:30:16,815 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-14 17:30:16,819 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-14 17:30:16,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.09 05:30:01" (1/3) ... [2018-09-14 17:30:16,820 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@778234b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 05:30:16, skipping insertion in model container [2018-09-14 17:30:16,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:30:04" (2/3) ... [2018-09-14 17:30:16,822 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@778234b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 05:30:16, skipping insertion in model container [2018-09-14 17:30:16,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 05:30:16" (3/3) ... [2018-09-14 17:30:16,825 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label17_true-unreach-call.c [2018-09-14 17:30:16,836 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-14 17:30:16,852 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-14 17:30:16,938 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-14 17:30:16,939 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-14 17:30:16,939 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-14 17:30:16,939 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-14 17:30:16,940 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-14 17:30:16,940 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-14 17:30:16,940 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-14 17:30:16,940 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-14 17:30:16,940 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-14 17:30:17,003 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-09-14 17:30:17,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-09-14 17:30:17,012 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:30:17,014 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] [2018-09-14 17:30:17,015 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:30:17,021 INFO L82 PathProgramCache]: Analyzing trace with hash 1075822924, now seen corresponding path program 1 times [2018-09-14 17:30:17,025 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:30:17,088 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:30:17,089 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:30:17,089 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:30:17,089 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:30:17,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:30:17,542 WARN L178 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 17:30:17,651 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 17:30:17,654 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:30:17,654 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-14 17:30:17,654 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:30:17,661 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 17:30:17,678 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 17:30:17,679 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 17:30:17,683 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 3 states. [2018-09-14 17:30:29,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:30:29,204 INFO L93 Difference]: Finished difference Result 3087 states and 5699 transitions. [2018-09-14 17:30:29,205 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 17:30:29,207 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 40 [2018-09-14 17:30:29,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:30:29,247 INFO L225 Difference]: With dead ends: 3087 [2018-09-14 17:30:29,248 INFO L226 Difference]: Without dead ends: 1965 [2018-09-14 17:30:29,260 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 17:30:29,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1965 states. [2018-09-14 17:30:29,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1965 to 1959. [2018-09-14 17:30:29,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1959 states. [2018-09-14 17:30:29,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1959 states to 1959 states and 3512 transitions. [2018-09-14 17:30:29,623 INFO L78 Accepts]: Start accepts. Automaton has 1959 states and 3512 transitions. Word has length 40 [2018-09-14 17:30:29,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:30:29,625 INFO L480 AbstractCegarLoop]: Abstraction has 1959 states and 3512 transitions. [2018-09-14 17:30:29,625 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 17:30:29,625 INFO L276 IsEmpty]: Start isEmpty. Operand 1959 states and 3512 transitions. [2018-09-14 17:30:29,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2018-09-14 17:30:29,639 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:30:29,639 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:30:29,640 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:30:29,640 INFO L82 PathProgramCache]: Analyzing trace with hash 1534967006, now seen corresponding path program 1 times [2018-09-14 17:30:29,640 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:30:29,642 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:30:29,642 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:30:29,643 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:30:29,643 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:30:29,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:30:30,031 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:30:30,032 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:30:30,032 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 17:30:30,032 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:30:30,034 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 17:30:30,035 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 17:30:30,035 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-14 17:30:30,035 INFO L87 Difference]: Start difference. First operand 1959 states and 3512 transitions. Second operand 6 states. [2018-09-14 17:30:46,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:30:46,949 INFO L93 Difference]: Finished difference Result 5634 states and 10287 transitions. [2018-09-14 17:30:46,949 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 17:30:46,949 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 117 [2018-09-14 17:30:46,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:30:46,982 INFO L225 Difference]: With dead ends: 5634 [2018-09-14 17:30:46,983 INFO L226 Difference]: Without dead ends: 3681 [2018-09-14 17:30:46,992 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-14 17:30:46,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3681 states. [2018-09-14 17:30:47,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3681 to 3650. [2018-09-14 17:30:47,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3650 states. [2018-09-14 17:30:47,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3650 states to 3650 states and 5957 transitions. [2018-09-14 17:30:47,254 INFO L78 Accepts]: Start accepts. Automaton has 3650 states and 5957 transitions. Word has length 117 [2018-09-14 17:30:47,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:30:47,255 INFO L480 AbstractCegarLoop]: Abstraction has 3650 states and 5957 transitions. [2018-09-14 17:30:47,255 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 17:30:47,255 INFO L276 IsEmpty]: Start isEmpty. Operand 3650 states and 5957 transitions. [2018-09-14 17:30:47,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-09-14 17:30:47,265 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:30:47,266 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:30:47,267 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:30:47,268 INFO L82 PathProgramCache]: Analyzing trace with hash -378735212, now seen corresponding path program 1 times [2018-09-14 17:30:47,268 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:30:47,272 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:30:47,273 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:30:47,273 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:30:47,273 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:30:47,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:30:47,618 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:30:47,619 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:30:47,619 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 17:30:47,619 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:30:47,620 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 17:30:47,620 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 17:30:47,620 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-14 17:30:47,621 INFO L87 Difference]: Start difference. First operand 3650 states and 5957 transitions. Second operand 6 states. [2018-09-14 17:30:58,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:30:58,933 INFO L93 Difference]: Finished difference Result 12385 states and 20601 transitions. [2018-09-14 17:30:58,938 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 17:30:58,938 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 136 [2018-09-14 17:30:58,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:30:58,988 INFO L225 Difference]: With dead ends: 12385 [2018-09-14 17:30:58,989 INFO L226 Difference]: Without dead ends: 8741 [2018-09-14 17:30:59,012 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 17:30:59,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8741 states. [2018-09-14 17:30:59,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8741 to 8684. [2018-09-14 17:30:59,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8684 states. [2018-09-14 17:30:59,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8684 states to 8684 states and 12864 transitions. [2018-09-14 17:30:59,285 INFO L78 Accepts]: Start accepts. Automaton has 8684 states and 12864 transitions. Word has length 136 [2018-09-14 17:30:59,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:30:59,285 INFO L480 AbstractCegarLoop]: Abstraction has 8684 states and 12864 transitions. [2018-09-14 17:30:59,285 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 17:30:59,286 INFO L276 IsEmpty]: Start isEmpty. Operand 8684 states and 12864 transitions. [2018-09-14 17:30:59,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-09-14 17:30:59,290 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:30:59,291 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:30:59,291 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:30:59,291 INFO L82 PathProgramCache]: Analyzing trace with hash 279720828, now seen corresponding path program 1 times [2018-09-14 17:30:59,292 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:30:59,294 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:30:59,294 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:30:59,294 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:30:59,294 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:30:59,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:30:59,628 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 17:30:59,711 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:30:59,711 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:30:59,711 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 17:30:59,711 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:30:59,712 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 17:30:59,712 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 17:30:59,712 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-14 17:30:59,713 INFO L87 Difference]: Start difference. First operand 8684 states and 12864 transitions. Second operand 6 states. [2018-09-14 17:31:14,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:31:14,566 INFO L93 Difference]: Finished difference Result 22909 states and 34919 transitions. [2018-09-14 17:31:14,570 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 17:31:14,570 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 148 [2018-09-14 17:31:14,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:31:14,643 INFO L225 Difference]: With dead ends: 22909 [2018-09-14 17:31:14,643 INFO L226 Difference]: Without dead ends: 14231 [2018-09-14 17:31:14,683 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-14 17:31:14,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14231 states. [2018-09-14 17:31:15,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14231 to 14057. [2018-09-14 17:31:15,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14057 states. [2018-09-14 17:31:15,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14057 states to 14057 states and 19960 transitions. [2018-09-14 17:31:15,049 INFO L78 Accepts]: Start accepts. Automaton has 14057 states and 19960 transitions. Word has length 148 [2018-09-14 17:31:15,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:31:15,050 INFO L480 AbstractCegarLoop]: Abstraction has 14057 states and 19960 transitions. [2018-09-14 17:31:15,050 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 17:31:15,050 INFO L276 IsEmpty]: Start isEmpty. Operand 14057 states and 19960 transitions. [2018-09-14 17:31:15,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2018-09-14 17:31:15,058 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:31:15,058 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 17:31:15,062 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:31:15,062 INFO L82 PathProgramCache]: Analyzing trace with hash 407433476, now seen corresponding path program 1 times [2018-09-14 17:31:15,063 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:31:15,063 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:31:15,064 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:31:15,064 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:31:15,064 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:31:15,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:31:15,307 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 66 proven. 71 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 17:31:15,308 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:31:15,308 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 17:31:15,319 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:31:15,319 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:31:15,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:31:15,418 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:31:15,577 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2018-09-14 17:31:15,577 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:31:15,795 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-09-14 17:31:16,184 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 66 proven. 71 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 17:31:16,225 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 17:31:16,225 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 8 [2018-09-14 17:31:16,226 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:31:16,227 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 17:31:16,227 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 17:31:16,227 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-09-14 17:31:16,227 INFO L87 Difference]: Start difference. First operand 14057 states and 19960 transitions. Second operand 5 states. [2018-09-14 17:31:28,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:31:28,627 INFO L93 Difference]: Finished difference Result 41296 states and 63500 transitions. [2018-09-14 17:31:28,629 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-14 17:31:28,630 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 212 [2018-09-14 17:31:28,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:31:28,798 INFO L225 Difference]: With dead ends: 41296 [2018-09-14 17:31:28,798 INFO L226 Difference]: Without dead ends: 27245 [2018-09-14 17:31:28,874 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 432 GetRequests, 422 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2018-09-14 17:31:28,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27245 states. [2018-09-14 17:31:29,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27245 to 27008. [2018-09-14 17:31:29,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27008 states. [2018-09-14 17:31:29,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27008 states to 27008 states and 38195 transitions. [2018-09-14 17:31:29,599 INFO L78 Accepts]: Start accepts. Automaton has 27008 states and 38195 transitions. Word has length 212 [2018-09-14 17:31:29,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:31:29,599 INFO L480 AbstractCegarLoop]: Abstraction has 27008 states and 38195 transitions. [2018-09-14 17:31:29,600 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 17:31:29,600 INFO L276 IsEmpty]: Start isEmpty. Operand 27008 states and 38195 transitions. [2018-09-14 17:31:29,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2018-09-14 17:31:29,611 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:31:29,611 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-14 17:31:29,611 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:31:29,612 INFO L82 PathProgramCache]: Analyzing trace with hash -988960568, now seen corresponding path program 1 times [2018-09-14 17:31:29,612 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:31:29,613 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:31:29,613 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:31:29,613 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:31:29,613 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:31:29,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:31:30,174 WARN L178 SmtUtils]: Spent 383.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 10 [2018-09-14 17:31:30,550 WARN L178 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-09-14 17:31:30,743 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-09-14 17:31:30,843 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 66 proven. 89 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 17:31:30,843 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:31:30,844 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 17:31:30,860 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:31:30,861 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:31:30,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:31:30,966 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:31:31,545 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2018-09-14 17:31:31,545 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:31:32,184 WARN L178 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 24 [2018-09-14 17:31:32,893 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 66 proven. 89 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 17:31:32,916 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 17:31:32,916 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2018-09-14 17:31:32,916 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:31:32,917 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 17:31:32,919 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 17:31:32,920 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2018-09-14 17:31:32,920 INFO L87 Difference]: Start difference. First operand 27008 states and 38195 transitions. Second operand 5 states. [2018-09-14 17:31:47,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:31:47,554 INFO L93 Difference]: Finished difference Result 58085 states and 84375 transitions. [2018-09-14 17:31:47,558 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 17:31:47,559 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 242 [2018-09-14 17:31:47,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:31:47,683 INFO L225 Difference]: With dead ends: 58085 [2018-09-14 17:31:47,683 INFO L226 Difference]: Without dead ends: 31083 [2018-09-14 17:31:47,760 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 492 GetRequests, 479 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2018-09-14 17:31:47,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31083 states. [2018-09-14 17:31:48,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31083 to 28885. [2018-09-14 17:31:48,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28885 states. [2018-09-14 17:31:48,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28885 states to 28885 states and 40661 transitions. [2018-09-14 17:31:48,725 INFO L78 Accepts]: Start accepts. Automaton has 28885 states and 40661 transitions. Word has length 242 [2018-09-14 17:31:48,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:31:48,726 INFO L480 AbstractCegarLoop]: Abstraction has 28885 states and 40661 transitions. [2018-09-14 17:31:48,726 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 17:31:48,726 INFO L276 IsEmpty]: Start isEmpty. Operand 28885 states and 40661 transitions. [2018-09-14 17:31:48,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2018-09-14 17:31:48,747 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:31:48,748 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:31:48,748 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:31:48,748 INFO L82 PathProgramCache]: Analyzing trace with hash -1265533220, now seen corresponding path program 1 times [2018-09-14 17:31:48,749 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:31:48,749 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:31:48,750 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:31:48,750 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:31:48,750 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:31:48,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:31:49,323 WARN L178 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 8 [2018-09-14 17:31:49,677 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-09-14 17:31:50,444 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 105 proven. 191 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2018-09-14 17:31:50,444 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:31:50,445 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 17:31:50,454 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:31:50,455 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:31:50,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:31:50,564 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:31:50,985 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 352 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2018-09-14 17:31:50,985 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:31:51,571 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:31:52,340 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 105 proven. 278 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 17:31:52,362 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:31:52,362 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 17:31:52,378 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:31:52,378 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:31:52,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:31:52,620 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:31:53,082 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 352 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2018-09-14 17:31:53,082 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:31:53,220 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 13 [2018-09-14 17:31:53,641 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-09-14 17:31:53,778 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-14 17:31:54,612 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 105 proven. 278 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 17:31:54,614 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:31:54,614 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8] total 26 [2018-09-14 17:31:54,614 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:31:54,617 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-09-14 17:31:54,617 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-09-14 17:31:54,618 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=517, Unknown=0, NotChecked=0, Total=650 [2018-09-14 17:31:54,618 INFO L87 Difference]: Start difference. First operand 28885 states and 40661 transitions. Second operand 14 states. [2018-09-14 17:33:37,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:33:37,853 INFO L93 Difference]: Finished difference Result 140927 states and 238607 transitions. [2018-09-14 17:33:37,854 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2018-09-14 17:33:37,854 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 343 [2018-09-14 17:33:37,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:33:38,559 INFO L225 Difference]: With dead ends: 140927 [2018-09-14 17:33:38,559 INFO L226 Difference]: Without dead ends: 112853 [2018-09-14 17:33:38,782 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1510 GetRequests, 1406 SyntacticMatches, 14 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2761 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=1543, Invalid=6829, Unknown=0, NotChecked=0, Total=8372 [2018-09-14 17:33:38,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112853 states. [2018-09-14 17:33:41,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112853 to 110289. [2018-09-14 17:33:41,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110289 states. [2018-09-14 17:33:42,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110289 states to 110289 states and 153807 transitions. [2018-09-14 17:33:42,057 INFO L78 Accepts]: Start accepts. Automaton has 110289 states and 153807 transitions. Word has length 343 [2018-09-14 17:33:42,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:33:42,058 INFO L480 AbstractCegarLoop]: Abstraction has 110289 states and 153807 transitions. [2018-09-14 17:33:42,058 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-09-14 17:33:42,058 INFO L276 IsEmpty]: Start isEmpty. Operand 110289 states and 153807 transitions. [2018-09-14 17:33:42,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2018-09-14 17:33:42,123 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:33:42,123 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:33:42,124 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:33:42,124 INFO L82 PathProgramCache]: Analyzing trace with hash -1418769883, now seen corresponding path program 1 times [2018-09-14 17:33:42,124 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:33:42,125 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:33:42,125 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:33:42,125 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:33:42,125 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:33:42,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:33:42,584 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 196 proven. 93 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2018-09-14 17:33:42,584 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:33:42,584 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 17:33:42,595 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:33:42,595 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:33:42,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:33:42,710 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:33:43,134 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 314 proven. 47 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2018-09-14 17:33:43,134 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:33:43,331 WARN L178 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 25 [2018-09-14 17:33:44,071 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 109 proven. 281 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 17:33:44,092 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:33:44,092 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 17:33:44,108 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:33:44,108 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:33:44,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:33:44,369 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:33:44,675 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 268 proven. 93 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2018-09-14 17:33:44,675 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:33:45,767 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 196 proven. 93 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2018-09-14 17:33:45,769 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:33:45,769 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 9, 8, 5] total 29 [2018-09-14 17:33:45,770 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:33:45,770 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-09-14 17:33:45,770 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-09-14 17:33:45,771 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=710, Unknown=0, NotChecked=0, Total=812 [2018-09-14 17:33:45,771 INFO L87 Difference]: Start difference. First operand 110289 states and 153807 transitions. Second operand 13 states. Received shutdown request... [2018-09-14 17:34:02,846 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-09-14 17:34:02,846 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-14 17:34:02,852 WARN L206 ceAbstractionStarter]: Timeout [2018-09-14 17:34:02,853 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.09 05:34:02 BoogieIcfgContainer [2018-09-14 17:34:02,853 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-14 17:34:02,854 INFO L168 Benchmark]: Toolchain (without parser) took 241168.52 ms. Allocated memory was 1.5 GB in the beginning and 3.9 GB in the end (delta: 2.3 GB). Free memory was 1.4 GB in the beginning and 2.8 GB in the end (delta: -1.4 GB). Peak memory consumption was 889.0 MB. Max. memory is 7.1 GB. [2018-09-14 17:34:02,855 INFO L168 Benchmark]: CDTParser took 0.30 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 17:34:02,855 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2618.93 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 339.3 MB). Peak memory consumption was 339.3 MB. Max. memory is 7.1 GB. [2018-09-14 17:34:02,856 INFO L168 Benchmark]: Boogie Procedure Inliner took 351.23 ms. Allocated memory is still 1.5 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 42.5 MB). Peak memory consumption was 42.5 MB. Max. memory is 7.1 GB. [2018-09-14 17:34:02,857 INFO L168 Benchmark]: Boogie Preprocessor took 1349.63 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 1.0 GB). Free memory was 1.0 GB in the beginning and 2.4 GB in the end (delta: -1.3 GB). Peak memory consumption was 174.3 MB. Max. memory is 7.1 GB. [2018-09-14 17:34:02,858 INFO L168 Benchmark]: RCFGBuilder took 10802.14 ms. Allocated memory was 2.5 GB in the beginning and 2.7 GB in the end (delta: 162.5 MB). Free memory was 2.4 GB in the beginning and 2.4 GB in the end (delta: -21.3 MB). Peak memory consumption was 753.5 MB. Max. memory is 7.1 GB. [2018-09-14 17:34:02,860 INFO L168 Benchmark]: TraceAbstraction took 226037.71 ms. Allocated memory was 2.7 GB in the beginning and 3.9 GB in the end (delta: 1.1 GB). Free memory was 2.4 GB in the beginning and 2.8 GB in the end (delta: -470.5 MB). Peak memory consumption was 679.2 MB. Max. memory is 7.1 GB. [2018-09-14 17:34:02,866 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 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 2618.93 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 339.3 MB). Peak memory consumption was 339.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 351.23 ms. Allocated memory is still 1.5 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 42.5 MB). Peak memory consumption was 42.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 1349.63 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 1.0 GB). Free memory was 1.0 GB in the beginning and 2.4 GB in the end (delta: -1.3 GB). Peak memory consumption was 174.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 10802.14 ms. Allocated memory was 2.5 GB in the beginning and 2.7 GB in the end (delta: 162.5 MB). Free memory was 2.4 GB in the beginning and 2.4 GB in the end (delta: -21.3 MB). Peak memory consumption was 753.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 226037.71 ms. Allocated memory was 2.7 GB in the beginning and 3.9 GB in the end (delta: 1.1 GB). Free memory was 2.4 GB in the beginning and 2.8 GB in the end (delta: -470.5 MB). Peak memory consumption was 679.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 111]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 111). Cancelled while BasicCegarLoop was constructing difference of abstraction (110289states) and FLOYD_HOARE automaton (currently 64 states, 13 states before enhancement), while PredicateComparison was comparing new predicate (quantifier-free) to 86 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 1120 locations, 1 error locations. TIMEOUT Result, 225.9s OverallTime, 8 OverallIterations, 4 TraceHistogramMax, 203.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3184 SDtfs, 46859 SDslu, 5361 SDs, 0 SdLazy, 77622 SolverSat, 15414 SolverUnsat, 12 SolverUnknown, 0 SolverNotchecked, 174.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4075 GetRequests, 3834 SyntacticMatches, 24 SemanticMatches, 216 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4887 ImplicationChecksByTransitivity, 11.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=110289occurred in iteration=7, 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: 6.2s AutomataMinimizationTime, 7 MinimizatonAttempts, 5267 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 13.6s InterpolantComputationTime, 3494 NumberOfCodeBlocks, 3494 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 5358 ConstructedInterpolants, 229 QuantifiedInterpolants, 10348861 SizeOfPredicates, 18 NumberOfNonLiveVariables, 3377 ConjunctsInSsa, 81 ConjunctsInUnsatCore, 20 InterpolantComputations, 6 PerfectInterpolantSequences, 3242/4920 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/Problem13_label17_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-14_17-34-02-882.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem13_label17_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-14_17-34-02-882.csv Completed graceful shutdown