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/Problem12_label57_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dace188-m [2018-09-14 17:26:13,498 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-14 17:26:13,500 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-14 17:26:13,519 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-14 17:26:13,520 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-14 17:26:13,522 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-14 17:26:13,523 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-14 17:26:13,526 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-14 17:26:13,528 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-14 17:26:13,529 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-14 17:26:13,537 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-14 17:26:13,538 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-14 17:26:13,539 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-14 17:26:13,541 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-14 17:26:13,544 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-14 17:26:13,545 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-14 17:26:13,545 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-14 17:26:13,549 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-14 17:26:13,553 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-14 17:26:13,555 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-14 17:26:13,556 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-14 17:26:13,558 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-14 17:26:13,561 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-14 17:26:13,562 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-14 17:26:13,562 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-14 17:26:13,565 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-14 17:26:13,566 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-14 17:26:13,567 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-14 17:26:13,569 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-14 17:26:13,570 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-14 17:26:13,570 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-14 17:26:13,572 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-14 17:26:13,572 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-14 17:26:13,572 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-14 17:26:13,575 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-14 17:26:13,576 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-14 17:26:13,576 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 17:26:13,603 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-14 17:26:13,603 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-14 17:26:13,604 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-14 17:26:13,605 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-14 17:26:13,605 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-14 17:26:13,605 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-14 17:26:13,605 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-14 17:26:13,606 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-14 17:26:13,606 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-14 17:26:13,606 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-14 17:26:13,606 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-14 17:26:13,607 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-14 17:26:13,607 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-14 17:26:13,607 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-14 17:26:13,608 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-14 17:26:13,609 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-14 17:26:13,609 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-14 17:26:13,609 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-14 17:26:13,609 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-14 17:26:13,610 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-14 17:26:13,611 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-14 17:26:13,611 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-14 17:26:13,611 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-14 17:26:13,611 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-14 17:26:13,612 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-14 17:26:13,612 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-14 17:26:13,612 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-14 17:26:13,612 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-14 17:26:13,612 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-14 17:26:13,612 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-14 17:26:13,613 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-14 17:26:13,613 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-14 17:26:13,613 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-14 17:26:13,665 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-14 17:26:13,679 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-14 17:26:13,685 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-14 17:26:13,687 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-14 17:26:13,688 INFO L276 PluginConnector]: CDTParser initialized [2018-09-14 17:26:13,689 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label57_true-unreach-call.c [2018-09-14 17:26:14,058 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/59a73ac7d/8b183f8a3c094a4ea13de97b542140b0/FLAG3eef36217 [2018-09-14 17:26:14,545 INFO L277 CDTParser]: Found 1 translation units. [2018-09-14 17:26:14,546 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label57_true-unreach-call.c [2018-09-14 17:26:14,578 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/59a73ac7d/8b183f8a3c094a4ea13de97b542140b0/FLAG3eef36217 [2018-09-14 17:26:14,599 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/59a73ac7d/8b183f8a3c094a4ea13de97b542140b0 [2018-09-14 17:26:14,612 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-14 17:26:14,616 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-14 17:26:14,617 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-14 17:26:14,617 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-14 17:26:14,627 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-14 17:26:14,629 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 05:26:14" (1/1) ... [2018-09-14 17:26:14,632 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c166ff5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:26:14, skipping insertion in model container [2018-09-14 17:26:14,632 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 05:26:14" (1/1) ... [2018-09-14 17:26:14,644 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-14 17:26:15,904 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 17:26:15,925 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-14 17:26:16,565 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 17:26:16,846 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:26:16 WrapperNode [2018-09-14 17:26:16,846 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-14 17:26:16,848 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-14 17:26:16,848 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-14 17:26:16,848 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-14 17:26:16,859 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:26:16" (1/1) ... [2018-09-14 17:26:16,950 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:26:16" (1/1) ... [2018-09-14 17:26:17,088 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-14 17:26:17,088 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-14 17:26:17,089 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-14 17:26:17,089 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-14 17:26:17,656 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:26:16" (1/1) ... [2018-09-14 17:26:17,656 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:26:16" (1/1) ... [2018-09-14 17:26:17,696 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:26:16" (1/1) ... [2018-09-14 17:26:17,697 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:26:16" (1/1) ... [2018-09-14 17:26:17,809 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:26:16" (1/1) ... [2018-09-14 17:26:17,845 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:26:16" (1/1) ... [2018-09-14 17:26:17,892 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:26:16" (1/1) ... [2018-09-14 17:26:17,946 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-14 17:26:17,946 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-14 17:26:17,947 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-14 17:26:17,947 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-14 17:26:17,948 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:26:16" (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 17:26:18,026 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-14 17:26:18,026 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-14 17:26:18,026 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-09-14 17:26:18,027 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-09-14 17:26:18,027 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-09-14 17:26:18,027 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-09-14 17:26:18,027 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-09-14 17:26:18,027 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-09-14 17:26:18,028 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-14 17:26:18,028 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-14 17:26:18,028 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-14 17:26:18,028 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-14 17:26:18,029 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-14 17:26:18,029 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-14 17:26:27,927 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-14 17:26:27,927 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 05:26:27 BoogieIcfgContainer [2018-09-14 17:26:27,928 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-14 17:26:27,929 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-14 17:26:27,929 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-14 17:26:27,932 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-14 17:26:27,933 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.09 05:26:14" (1/3) ... [2018-09-14 17:26:27,934 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fef636a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 05:26:27, skipping insertion in model container [2018-09-14 17:26:27,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:26:16" (2/3) ... [2018-09-14 17:26:27,934 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fef636a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 05:26:27, skipping insertion in model container [2018-09-14 17:26:27,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 05:26:27" (3/3) ... [2018-09-14 17:26:27,936 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label57_true-unreach-call.c [2018-09-14 17:26:27,947 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-14 17:26:27,958 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-14 17:26:28,019 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-14 17:26:28,020 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-14 17:26:28,020 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-14 17:26:28,020 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-14 17:26:28,020 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-14 17:26:28,020 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-14 17:26:28,021 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-14 17:26:28,021 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-14 17:26:28,021 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-14 17:26:28,067 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-09-14 17:26:28,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-09-14 17:26:28,080 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:26:28,082 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:26:28,083 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:26:28,089 INFO L82 PathProgramCache]: Analyzing trace with hash -937997924, now seen corresponding path program 1 times [2018-09-14 17:26:28,092 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:26:28,149 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:26:28,150 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:26:28,150 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:26:28,150 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:26:28,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:26:28,676 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 17:26:28,679 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:26:28,679 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-14 17:26:28,679 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:26:28,686 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-14 17:26:28,702 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-14 17:26:28,703 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 17:26:28,706 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 4 states. [2018-09-14 17:26:42,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:26:42,194 INFO L93 Difference]: Finished difference Result 3234 states and 6255 transitions. [2018-09-14 17:26:42,195 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-14 17:26:42,197 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 44 [2018-09-14 17:26:42,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:26:42,246 INFO L225 Difference]: With dead ends: 3234 [2018-09-14 17:26:42,246 INFO L226 Difference]: Without dead ends: 2388 [2018-09-14 17:26:42,257 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 17:26:42,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2388 states. [2018-09-14 17:26:42,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2388 to 2388. [2018-09-14 17:26:42,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2388 states. [2018-09-14 17:26:42,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2388 states to 2388 states and 4022 transitions. [2018-09-14 17:26:42,452 INFO L78 Accepts]: Start accepts. Automaton has 2388 states and 4022 transitions. Word has length 44 [2018-09-14 17:26:42,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:26:42,453 INFO L480 AbstractCegarLoop]: Abstraction has 2388 states and 4022 transitions. [2018-09-14 17:26:42,453 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-14 17:26:42,454 INFO L276 IsEmpty]: Start isEmpty. Operand 2388 states and 4022 transitions. [2018-09-14 17:26:42,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-09-14 17:26:42,464 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:26:42,465 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:26:42,465 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:26:42,465 INFO L82 PathProgramCache]: Analyzing trace with hash 1418156750, now seen corresponding path program 1 times [2018-09-14 17:26:42,466 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:26:42,468 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:26:42,468 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:26:42,468 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:26:42,468 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:26:42,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:26:42,877 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:26:42,878 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:26:42,878 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 17:26:42,878 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:26:42,880 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 17:26:42,880 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 17:26:42,881 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-14 17:26:42,881 INFO L87 Difference]: Start difference. First operand 2388 states and 4022 transitions. Second operand 6 states. [2018-09-14 17:26:59,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:26:59,586 INFO L93 Difference]: Finished difference Result 9459 states and 16272 transitions. [2018-09-14 17:26:59,588 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-14 17:26:59,588 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 144 [2018-09-14 17:26:59,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:26:59,639 INFO L225 Difference]: With dead ends: 9459 [2018-09-14 17:26:59,639 INFO L226 Difference]: Without dead ends: 7077 [2018-09-14 17:26:59,652 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 17:26:59,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7077 states. [2018-09-14 17:26:59,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7077 to 7026. [2018-09-14 17:26:59,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7026 states. [2018-09-14 17:26:59,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7026 states to 7026 states and 10545 transitions. [2018-09-14 17:26:59,849 INFO L78 Accepts]: Start accepts. Automaton has 7026 states and 10545 transitions. Word has length 144 [2018-09-14 17:26:59,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:26:59,850 INFO L480 AbstractCegarLoop]: Abstraction has 7026 states and 10545 transitions. [2018-09-14 17:26:59,850 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 17:26:59,850 INFO L276 IsEmpty]: Start isEmpty. Operand 7026 states and 10545 transitions. [2018-09-14 17:26:59,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2018-09-14 17:26:59,859 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:26:59,860 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-14 17:26:59,860 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:26:59,860 INFO L82 PathProgramCache]: Analyzing trace with hash -455141647, now seen corresponding path program 1 times [2018-09-14 17:26:59,860 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:26:59,861 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:26:59,862 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:26:59,862 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:26:59,862 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:26:59,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:27:00,120 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 74 proven. 67 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 17:27:00,120 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:27:00,120 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 17:27:00,135 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:27:00,135 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:27:00,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:27:00,256 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:27:00,655 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2018-09-14 17:27:00,655 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:27:00,861 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-09-14 17:27:01,599 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 74 proven. 67 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 17:27:01,631 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 17:27:01,632 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 10 [2018-09-14 17:27:01,632 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:27:01,633 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 17:27:01,633 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 17:27:01,633 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2018-09-14 17:27:01,634 INFO L87 Difference]: Start difference. First operand 7026 states and 10545 transitions. Second operand 5 states. [2018-09-14 17:27:12,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:27:12,379 INFO L93 Difference]: Finished difference Result 19745 states and 30539 transitions. [2018-09-14 17:27:12,385 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-14 17:27:12,386 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 197 [2018-09-14 17:27:12,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:27:12,465 INFO L225 Difference]: With dead ends: 19745 [2018-09-14 17:27:12,465 INFO L226 Difference]: Without dead ends: 12725 [2018-09-14 17:27:12,499 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 390 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2018-09-14 17:27:12,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12725 states. [2018-09-14 17:27:12,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12725 to 12660. [2018-09-14 17:27:12,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12660 states. [2018-09-14 17:27:12,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12660 states to 12660 states and 18243 transitions. [2018-09-14 17:27:12,862 INFO L78 Accepts]: Start accepts. Automaton has 12660 states and 18243 transitions. Word has length 197 [2018-09-14 17:27:12,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:27:12,863 INFO L480 AbstractCegarLoop]: Abstraction has 12660 states and 18243 transitions. [2018-09-14 17:27:12,863 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 17:27:12,863 INFO L276 IsEmpty]: Start isEmpty. Operand 12660 states and 18243 transitions. [2018-09-14 17:27:12,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2018-09-14 17:27:12,870 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:27:12,870 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:27:12,871 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:27:12,871 INFO L82 PathProgramCache]: Analyzing trace with hash 1259449212, now seen corresponding path program 1 times [2018-09-14 17:27:12,871 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:27:12,872 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:27:12,872 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:27:12,872 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:27:12,873 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:27:12,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:27:13,309 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 74 proven. 69 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 17:27:13,310 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:27:13,310 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 17:27:13,330 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:27:13,331 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:27:13,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:27:13,430 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:27:13,771 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 110 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2018-09-14 17:27:13,771 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:27:14,205 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 74 proven. 69 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 17:27:14,243 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 17:27:14,243 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 10 [2018-09-14 17:27:14,243 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:27:14,244 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 17:27:14,244 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 17:27:14,244 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-09-14 17:27:14,245 INFO L87 Difference]: Start difference. First operand 12660 states and 18243 transitions. Second operand 5 states. [2018-09-14 17:27:22,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:27:22,496 INFO L93 Difference]: Finished difference Result 36822 states and 56021 transitions. [2018-09-14 17:27:22,496 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-14 17:27:22,497 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 198 [2018-09-14 17:27:22,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:27:22,617 INFO L225 Difference]: With dead ends: 36822 [2018-09-14 17:27:22,617 INFO L226 Difference]: Without dead ends: 24168 [2018-09-14 17:27:22,669 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 393 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2018-09-14 17:27:22,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24168 states. [2018-09-14 17:27:23,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24168 to 24002. [2018-09-14 17:27:23,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24002 states. [2018-09-14 17:27:23,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24002 states to 24002 states and 34213 transitions. [2018-09-14 17:27:23,601 INFO L78 Accepts]: Start accepts. Automaton has 24002 states and 34213 transitions. Word has length 198 [2018-09-14 17:27:23,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:27:23,601 INFO L480 AbstractCegarLoop]: Abstraction has 24002 states and 34213 transitions. [2018-09-14 17:27:23,602 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 17:27:23,602 INFO L276 IsEmpty]: Start isEmpty. Operand 24002 states and 34213 transitions. [2018-09-14 17:27:23,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2018-09-14 17:27:23,608 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:27:23,608 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:27:23,609 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:27:23,610 INFO L82 PathProgramCache]: Analyzing trace with hash -2020512381, now seen corresponding path program 1 times [2018-09-14 17:27:23,610 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:27:23,611 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:27:23,612 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:27:23,612 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:27:23,612 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:27:23,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:27:23,953 WARN L178 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 17:27:24,367 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:27:24,367 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:27:24,367 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 17:27:24,368 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:27:24,368 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 17:27:24,369 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 17:27:24,369 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-14 17:27:24,369 INFO L87 Difference]: Start difference. First operand 24002 states and 34213 transitions. Second operand 6 states. [2018-09-14 17:27:36,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:27:36,133 INFO L93 Difference]: Finished difference Result 62043 states and 95807 transitions. [2018-09-14 17:27:36,135 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 17:27:36,136 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 207 [2018-09-14 17:27:36,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:27:36,368 INFO L225 Difference]: With dead ends: 62043 [2018-09-14 17:27:36,368 INFO L226 Difference]: Without dead ends: 38047 [2018-09-14 17:27:36,450 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 17:27:36,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38047 states. [2018-09-14 17:27:37,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38047 to 37875. [2018-09-14 17:27:37,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37875 states. [2018-09-14 17:27:37,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37875 states to 37875 states and 56044 transitions. [2018-09-14 17:27:37,774 INFO L78 Accepts]: Start accepts. Automaton has 37875 states and 56044 transitions. Word has length 207 [2018-09-14 17:27:37,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:27:37,774 INFO L480 AbstractCegarLoop]: Abstraction has 37875 states and 56044 transitions. [2018-09-14 17:27:37,774 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 17:27:37,775 INFO L276 IsEmpty]: Start isEmpty. Operand 37875 states and 56044 transitions. [2018-09-14 17:27:37,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2018-09-14 17:27:37,786 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:27:37,786 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:27:37,787 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:27:37,787 INFO L82 PathProgramCache]: Analyzing trace with hash 1254586373, now seen corresponding path program 1 times [2018-09-14 17:27:37,787 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:27:37,788 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:27:37,788 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:27:37,788 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:27:37,788 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:27:37,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:27:38,092 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-09-14 17:27:38,092 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:27:38,092 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-14 17:27:38,093 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:27:38,093 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-14 17:27:38,093 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-14 17:27:38,094 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 17:27:38,094 INFO L87 Difference]: Start difference. First operand 37875 states and 56044 transitions. Second operand 4 states. [2018-09-14 17:27:47,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:27:47,170 INFO L93 Difference]: Finished difference Result 109418 states and 167136 transitions. [2018-09-14 17:27:47,170 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-14 17:27:47,171 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 267 [2018-09-14 17:27:47,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:27:47,387 INFO L225 Difference]: With dead ends: 109418 [2018-09-14 17:27:47,388 INFO L226 Difference]: Without dead ends: 60488 [2018-09-14 17:27:47,506 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 17:27:47,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60488 states. [2018-09-14 17:27:48,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60488 to 60469. [2018-09-14 17:27:48,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60469 states. [2018-09-14 17:27:48,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60469 states to 60469 states and 81009 transitions. [2018-09-14 17:27:48,602 INFO L78 Accepts]: Start accepts. Automaton has 60469 states and 81009 transitions. Word has length 267 [2018-09-14 17:27:48,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:27:48,603 INFO L480 AbstractCegarLoop]: Abstraction has 60469 states and 81009 transitions. [2018-09-14 17:27:48,604 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-14 17:27:48,604 INFO L276 IsEmpty]: Start isEmpty. Operand 60469 states and 81009 transitions. [2018-09-14 17:27:48,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2018-09-14 17:27:48,671 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:27:48,671 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-14 17:27:48,672 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:27:48,672 INFO L82 PathProgramCache]: Analyzing trace with hash 1372385524, now seen corresponding path program 1 times [2018-09-14 17:27:48,672 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:27:48,673 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:27:48,673 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:27:48,674 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:27:48,675 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:27:48,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:27:49,048 WARN L178 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 17:27:49,599 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 74 proven. 148 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 17:27:49,600 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:27:49,600 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 17:27:49,616 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:27:49,616 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:27:49,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:27:49,737 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:27:50,076 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 189 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2018-09-14 17:27:50,076 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:27:50,552 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 74 proven. 148 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 17:27:50,572 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 17:27:50,573 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2018-09-14 17:27:50,573 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:27:50,573 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 17:27:50,574 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 17:27:50,574 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-09-14 17:27:50,574 INFO L87 Difference]: Start difference. First operand 60469 states and 81009 transitions. Second operand 5 states. [2018-09-14 17:28:02,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:28:02,610 INFO L93 Difference]: Finished difference Result 177265 states and 255853 transitions. [2018-09-14 17:28:02,613 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-14 17:28:02,613 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 386 [2018-09-14 17:28:02,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:28:04,006 INFO L225 Difference]: With dead ends: 177265 [2018-09-14 17:28:04,006 INFO L226 Difference]: Without dead ends: 116802 [2018-09-14 17:28:04,171 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 779 GetRequests, 766 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2018-09-14 17:28:04,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116802 states. [2018-09-14 17:28:06,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116802 to 116443. [2018-09-14 17:28:06,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116443 states. [2018-09-14 17:28:06,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116443 states to 116443 states and 161299 transitions. [2018-09-14 17:28:06,396 INFO L78 Accepts]: Start accepts. Automaton has 116443 states and 161299 transitions. Word has length 386 [2018-09-14 17:28:06,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:28:06,397 INFO L480 AbstractCegarLoop]: Abstraction has 116443 states and 161299 transitions. [2018-09-14 17:28:06,397 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 17:28:06,397 INFO L276 IsEmpty]: Start isEmpty. Operand 116443 states and 161299 transitions. [2018-09-14 17:28:06,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 473 [2018-09-14 17:28:06,488 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:28:06,488 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-14 17:28:06,489 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:28:06,489 INFO L82 PathProgramCache]: Analyzing trace with hash 1939278048, now seen corresponding path program 1 times [2018-09-14 17:28:06,489 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:28:06,490 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:28:06,490 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:28:06,490 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:28:06,490 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:28:06,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:28:06,901 WARN L178 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 17:28:07,211 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 74 proven. 194 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 17:28:07,211 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:28:07,211 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 17:28:07,219 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:28:07,219 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:28:07,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:28:07,351 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:28:08,373 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 235 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2018-09-14 17:28:08,374 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:28:08,595 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 74 proven. 194 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 17:28:08,616 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 17:28:08,616 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 10 [2018-09-14 17:28:08,616 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:28:08,617 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 17:28:08,617 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 17:28:08,617 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-09-14 17:28:08,618 INFO L87 Difference]: Start difference. First operand 116443 states and 161299 transitions. Second operand 5 states. [2018-09-14 17:28:16,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:28:16,297 INFO L93 Difference]: Finished difference Result 232789 states and 324242 transitions. [2018-09-14 17:28:16,307 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-14 17:28:16,308 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 472 [2018-09-14 17:28:16,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:28:16,667 INFO L225 Difference]: With dead ends: 232789 [2018-09-14 17:28:16,667 INFO L226 Difference]: Without dead ends: 116352 [2018-09-14 17:28:17,641 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 953 GetRequests, 938 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2018-09-14 17:28:17,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116352 states. [2018-09-14 17:28:18,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116352 to 116230. [2018-09-14 17:28:18,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116230 states. [2018-09-14 17:28:19,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116230 states to 116230 states and 151403 transitions. [2018-09-14 17:28:19,180 INFO L78 Accepts]: Start accepts. Automaton has 116230 states and 151403 transitions. Word has length 472 [2018-09-14 17:28:19,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:28:19,181 INFO L480 AbstractCegarLoop]: Abstraction has 116230 states and 151403 transitions. [2018-09-14 17:28:19,181 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 17:28:19,181 INFO L276 IsEmpty]: Start isEmpty. Operand 116230 states and 151403 transitions. [2018-09-14 17:28:19,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 581 [2018-09-14 17:28:19,259 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:28:19,259 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:28:19,259 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:28:19,260 INFO L82 PathProgramCache]: Analyzing trace with hash -2029852452, now seen corresponding path program 1 times [2018-09-14 17:28:19,260 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:28:19,261 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:28:19,261 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:28:19,261 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:28:19,261 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:28:19,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:28:19,813 INFO L134 CoverageAnalysis]: Checked inductivity of 771 backedges. 157 proven. 0 refuted. 0 times theorem prover too weak. 614 trivial. 0 not checked. [2018-09-14 17:28:19,813 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:28:19,814 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-14 17:28:19,814 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:28:19,815 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-14 17:28:19,815 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-14 17:28:19,815 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 17:28:19,817 INFO L87 Difference]: Start difference. First operand 116230 states and 151403 transitions. Second operand 4 states. [2018-09-14 17:28:28,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:28:28,375 INFO L93 Difference]: Finished difference Result 280259 states and 371437 transitions. [2018-09-14 17:28:28,376 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-14 17:28:28,376 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 580 [2018-09-14 17:28:28,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:28:28,855 INFO L225 Difference]: With dead ends: 280259 [2018-09-14 17:28:28,855 INFO L226 Difference]: Without dead ends: 164035 [2018-09-14 17:28:29,058 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 17:28:29,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164035 states. [2018-09-14 17:28:31,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164035 to 160941. [2018-09-14 17:28:31,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160941 states. [2018-09-14 17:28:31,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160941 states to 160941 states and 207313 transitions. [2018-09-14 17:28:31,750 INFO L78 Accepts]: Start accepts. Automaton has 160941 states and 207313 transitions. Word has length 580 [2018-09-14 17:28:31,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:28:31,751 INFO L480 AbstractCegarLoop]: Abstraction has 160941 states and 207313 transitions. [2018-09-14 17:28:31,751 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-14 17:28:31,751 INFO L276 IsEmpty]: Start isEmpty. Operand 160941 states and 207313 transitions. [2018-09-14 17:28:32,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 923 [2018-09-14 17:28:32,050 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:28:32,051 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:28:32,052 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:28:32,052 INFO L82 PathProgramCache]: Analyzing trace with hash -1066998395, now seen corresponding path program 1 times [2018-09-14 17:28:32,052 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:28:32,053 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:28:32,053 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:28:32,053 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:28:32,053 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:28:32,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:28:34,332 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 221 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:28:34,332 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:28:34,332 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 17:28:34,340 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:28:34,340 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:28:34,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:28:34,581 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:28:35,608 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 221 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:28:35,608 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:28:36,867 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 221 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:28:36,888 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:28:36,888 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 17:28:36,906 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:28:36,906 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:28:37,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:28:37,449 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:28:38,127 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 221 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:28:38,128 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:28:39,333 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 221 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:28:39,335 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:28:39,336 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 16 [2018-09-14 17:28:39,336 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:28:39,338 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-14 17:28:39,338 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-14 17:28:39,338 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2018-09-14 17:28:39,338 INFO L87 Difference]: Start difference. First operand 160941 states and 207313 transitions. Second operand 9 states. [2018-09-14 17:29:05,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:29:05,327 INFO L93 Difference]: Finished difference Result 334955 states and 515348 transitions. [2018-09-14 17:29:05,328 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-09-14 17:29:05,328 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 922 [2018-09-14 17:29:05,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:29:06,057 INFO L225 Difference]: With dead ends: 334955 [2018-09-14 17:29:06,057 INFO L226 Difference]: Without dead ends: 174788 [2018-09-14 17:29:06,436 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3765 GetRequests, 3710 SyntacticMatches, 3 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 762 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=575, Invalid=2287, Unknown=0, NotChecked=0, Total=2862 [2018-09-14 17:29:06,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174788 states. [2018-09-14 17:29:15,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174788 to 166055. [2018-09-14 17:29:15,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166055 states. [2018-09-14 17:29:15,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166055 states to 166055 states and 209781 transitions. [2018-09-14 17:29:15,923 INFO L78 Accepts]: Start accepts. Automaton has 166055 states and 209781 transitions. Word has length 922 [2018-09-14 17:29:15,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:29:15,925 INFO L480 AbstractCegarLoop]: Abstraction has 166055 states and 209781 transitions. [2018-09-14 17:29:15,925 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-14 17:29:15,925 INFO L276 IsEmpty]: Start isEmpty. Operand 166055 states and 209781 transitions. [2018-09-14 17:29:16,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1036 [2018-09-14 17:29:16,394 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:29:16,395 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:29:16,395 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:29:16,396 INFO L82 PathProgramCache]: Analyzing trace with hash -821795904, now seen corresponding path program 1 times [2018-09-14 17:29:16,396 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:29:16,396 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:29:16,397 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:29:16,397 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:29:16,397 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:29:16,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:29:17,803 INFO L134 CoverageAnalysis]: Checked inductivity of 489 backedges. 230 proven. 115 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2018-09-14 17:29:17,803 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:29:17,804 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 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:29:17,814 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:29:17,814 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:29:18,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:29:18,087 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:29:18,545 INFO L134 CoverageAnalysis]: Checked inductivity of 489 backedges. 449 proven. 2 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2018-09-14 17:29:18,545 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:29:19,492 INFO L134 CoverageAnalysis]: Checked inductivity of 489 backedges. 230 proven. 115 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2018-09-14 17:29:19,514 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:29:19,514 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 9 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 9 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:29:19,531 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:29:19,531 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:29:20,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:29:20,161 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:29:21,044 INFO L134 CoverageAnalysis]: Checked inductivity of 489 backedges. 449 proven. 2 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2018-09-14 17:29:21,044 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:29:21,835 INFO L134 CoverageAnalysis]: Checked inductivity of 489 backedges. 230 proven. 115 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2018-09-14 17:29:21,839 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:29:21,840 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 12 [2018-09-14 17:29:21,840 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:29:21,842 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-14 17:29:21,842 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-14 17:29:21,843 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-09-14 17:29:21,843 INFO L87 Difference]: Start difference. First operand 166055 states and 209781 transitions. Second operand 9 states. [2018-09-14 17:29:41,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:29:41,239 INFO L93 Difference]: Finished difference Result 385425 states and 541375 transitions. [2018-09-14 17:29:41,240 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-14 17:29:41,240 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1035 [2018-09-14 17:29:41,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:29:42,492 INFO L225 Difference]: With dead ends: 385425 [2018-09-14 17:29:42,493 INFO L226 Difference]: Without dead ends: 220144 [2018-09-14 17:29:43,041 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4156 GetRequests, 4135 SyntacticMatches, 5 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=102, Invalid=204, Unknown=0, NotChecked=0, Total=306 [2018-09-14 17:29:43,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220144 states. [2018-09-14 17:29:48,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220144 to 218839. [2018-09-14 17:29:48,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218839 states. [2018-09-14 17:29:49,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218839 states to 218839 states and 304661 transitions. [2018-09-14 17:29:49,032 INFO L78 Accepts]: Start accepts. Automaton has 218839 states and 304661 transitions. Word has length 1035 [2018-09-14 17:29:49,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:29:49,033 INFO L480 AbstractCegarLoop]: Abstraction has 218839 states and 304661 transitions. [2018-09-14 17:29:49,033 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-14 17:29:49,033 INFO L276 IsEmpty]: Start isEmpty. Operand 218839 states and 304661 transitions. [2018-09-14 17:29:49,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1335 [2018-09-14 17:29:49,943 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:29:49,944 INFO L376 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:29:49,944 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:29:49,945 INFO L82 PathProgramCache]: Analyzing trace with hash -850637439, now seen corresponding path program 1 times [2018-09-14 17:29:49,945 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:29:49,946 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:29:49,946 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:29:49,946 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:29:49,946 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:29:50,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:29:52,118 INFO L134 CoverageAnalysis]: Checked inductivity of 1675 backedges. 552 proven. 260 refuted. 0 times theorem prover too weak. 863 trivial. 0 not checked. [2018-09-14 17:29:52,119 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:29:52,119 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 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:29:52,130 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:29:52,130 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:29:52,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:29:52,478 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:29:54,077 INFO L134 CoverageAnalysis]: Checked inductivity of 1675 backedges. 1239 proven. 0 refuted. 0 times theorem prover too weak. 436 trivial. 0 not checked. [2018-09-14 17:29:54,077 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:29:56,049 INFO L134 CoverageAnalysis]: Checked inductivity of 1675 backedges. 527 proven. 248 refuted. 0 times theorem prover too weak. 900 trivial. 0 not checked. [2018-09-14 17:29:56,085 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 17:29:56,086 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [6, 3] total 8 [2018-09-14 17:29:56,086 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:29:56,087 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 17:29:56,087 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 17:29:56,087 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2018-09-14 17:29:56,088 INFO L87 Difference]: Start difference. First operand 218839 states and 304661 transitions. Second operand 3 states. Received shutdown request... [2018-09-14 17:29:58,042 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 17:29:58,042 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-14 17:29:58,048 WARN L206 ceAbstractionStarter]: Timeout [2018-09-14 17:29:58,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.09 05:29:58 BoogieIcfgContainer [2018-09-14 17:29:58,048 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-14 17:29:58,049 INFO L168 Benchmark]: Toolchain (without parser) took 223436.88 ms. Allocated memory was 1.5 GB in the beginning and 5.3 GB in the end (delta: 3.8 GB). Free memory was 1.4 GB in the beginning and 2.7 GB in the end (delta: -1.3 GB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. [2018-09-14 17:29:58,050 INFO L168 Benchmark]: CDTParser took 0.23 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 17:29:58,051 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2229.96 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. [2018-09-14 17:29:58,052 INFO L168 Benchmark]: Boogie Procedure Inliner took 240.55 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-09-14 17:29:58,053 INFO L168 Benchmark]: Boogie Preprocessor took 857.56 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 933.8 MB). Free memory was 1.1 GB in the beginning and 2.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 128.0 MB. Max. memory is 7.1 GB. [2018-09-14 17:29:58,054 INFO L168 Benchmark]: RCFGBuilder took 9981.32 ms. Allocated memory is still 2.5 GB. Free memory was 2.3 GB in the beginning and 1.7 GB in the end (delta: 650.3 MB). Peak memory consumption was 650.3 MB. Max. memory is 7.1 GB. [2018-09-14 17:29:58,054 INFO L168 Benchmark]: TraceAbstraction took 210119.71 ms. Allocated memory was 2.5 GB in the beginning and 5.3 GB in the end (delta: 2.8 GB). Free memory was 1.7 GB in the beginning and 2.7 GB in the end (delta: -1.1 GB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. [2018-09-14 17:29:58,059 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 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 2229.96 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 240.55 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 857.56 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 933.8 MB). Free memory was 1.1 GB in the beginning and 2.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 128.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 9981.32 ms. Allocated memory is still 2.5 GB. Free memory was 2.3 GB in the beginning and 1.7 GB in the end (delta: 650.3 MB). Peak memory consumption was 650.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 210119.71 ms. Allocated memory was 2.5 GB in the beginning and 5.3 GB in the end (delta: 2.8 GB). Free memory was 1.7 GB in the beginning and 2.7 GB in the end (delta: -1.1 GB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 123]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 123). Cancelled while BasicCegarLoop was constructing difference of abstraction (218839states) and FLOYD_HOARE automaton (currently 3 states, 3 states before enhancement), while ReachableStatesComputation was computing reachable states (43000 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 840 locations, 1 error locations. TIMEOUT Result, 210.0s OverallTime, 12 OverallIterations, 7 TraceHistogramMax, 153.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 4818 SDtfs, 37978 SDslu, 2381 SDs, 0 SdLazy, 73134 SolverSat, 19130 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 110.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 13166 GetRequests, 13013 SyntacticMatches, 18 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 932 ImplicationChecksByTransitivity, 6.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=218839occurred in iteration=11, 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: 26.0s AutomataMinimizationTime, 11 MinimizatonAttempts, 14086 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.5s SsaConstructionTime, 2.6s SatisfiabilityAnalysisTime, 20.4s InterpolantComputationTime, 12287 NumberOfCodeBlocks, 12287 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 18758 ConstructedInterpolants, 0 QuantifiedInterpolants, 46598335 SizeOfPredicates, 10 NumberOfNonLiveVariables, 8970 ConjunctsInSsa, 64 ConjunctsInUnsatCore, 30 InterpolantComputations, 10 PerfectInterpolantSequences, 10137/11960 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/Problem12_label57_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-14_17-29-58-073.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem12_label57_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-14_17-29-58-073.csv Completed graceful shutdown