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/Problem18_label40_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-69f5bdd-m [2018-09-18 12:24:17,724 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-18 12:24:17,727 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-18 12:24:17,745 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-18 12:24:17,745 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-18 12:24:17,746 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-18 12:24:17,748 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-18 12:24:17,749 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-18 12:24:17,753 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-18 12:24:17,754 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-18 12:24:17,755 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-18 12:24:17,755 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-18 12:24:17,756 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-18 12:24:17,757 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-18 12:24:17,758 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-18 12:24:17,759 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-18 12:24:17,760 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-18 12:24:17,762 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-18 12:24:17,764 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-18 12:24:17,765 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-18 12:24:17,767 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-18 12:24:17,768 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-18 12:24:17,771 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-18 12:24:17,771 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-18 12:24:17,771 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-18 12:24:17,773 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-18 12:24:17,774 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-18 12:24:17,775 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-18 12:24:17,775 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-18 12:24:17,777 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-18 12:24:17,777 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-18 12:24:17,778 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-18 12:24:17,778 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-18 12:24:17,778 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-18 12:24:17,779 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-18 12:24:17,780 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-18 12:24:17,781 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 [2018-09-18 12:24:17,797 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-18 12:24:17,797 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-18 12:24:17,800 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-18 12:24:17,800 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-18 12:24:17,800 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-18 12:24:17,800 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-18 12:24:17,800 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-18 12:24:17,801 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-18 12:24:17,801 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-18 12:24:17,801 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-18 12:24:17,801 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-09-18 12:24:17,801 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-18 12:24:17,802 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-18 12:24:17,802 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-18 12:24:17,803 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-18 12:24:17,803 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-18 12:24:17,803 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-18 12:24:17,803 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-18 12:24:17,804 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-18 12:24:17,804 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-18 12:24:17,804 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-18 12:24:17,804 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-18 12:24:17,804 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-18 12:24:17,805 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-18 12:24:17,805 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-18 12:24:17,805 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-18 12:24:17,805 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-18 12:24:17,805 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-18 12:24:17,806 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-18 12:24:17,806 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-18 12:24:17,806 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-18 12:24:17,806 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-18 12:24:17,806 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-18 12:24:17,806 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-18 12:24:17,851 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-18 12:24:17,871 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-18 12:24:17,875 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-18 12:24:17,877 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-18 12:24:17,878 INFO L276 PluginConnector]: CDTParser initialized [2018-09-18 12:24:17,878 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label40_true-unreach-call.c [2018-09-18 12:24:18,222 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe7a02761/b875e0dbd7f44e79aa8f15220345b715/FLAG9a692a3b0 [2018-09-18 12:24:18,633 INFO L277 CDTParser]: Found 1 translation units. [2018-09-18 12:24:18,634 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label40_true-unreach-call.c [2018-09-18 12:24:18,658 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe7a02761/b875e0dbd7f44e79aa8f15220345b715/FLAG9a692a3b0 [2018-09-18 12:24:18,674 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe7a02761/b875e0dbd7f44e79aa8f15220345b715 [2018-09-18 12:24:18,686 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-18 12:24:18,689 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-18 12:24:18,691 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-18 12:24:18,691 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-18 12:24:18,699 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-18 12:24:18,701 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 12:24:18" (1/1) ... [2018-09-18 12:24:18,704 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bd8af40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:24:18, skipping insertion in model container [2018-09-18 12:24:18,705 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 12:24:18" (1/1) ... [2018-09-18 12:24:18,717 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-18 12:24:19,804 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-18 12:24:19,824 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-18 12:24:20,279 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-18 12:24:20,443 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:24:20 WrapperNode [2018-09-18 12:24:20,443 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-18 12:24:20,444 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-18 12:24:20,445 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-18 12:24:20,445 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-18 12:24:20,456 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:24:20" (1/1) ... [2018-09-18 12:24:20,539 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:24:20" (1/1) ... [2018-09-18 12:24:20,657 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-18 12:24:20,658 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-18 12:24:20,658 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-18 12:24:20,658 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-18 12:24:21,104 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:24:20" (1/1) ... [2018-09-18 12:24:21,104 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:24:20" (1/1) ... [2018-09-18 12:24:21,136 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:24:20" (1/1) ... [2018-09-18 12:24:21,136 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:24:20" (1/1) ... [2018-09-18 12:24:21,221 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:24:20" (1/1) ... [2018-09-18 12:24:21,252 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:24:20" (1/1) ... [2018-09-18 12:24:21,275 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:24:20" (1/1) ... [2018-09-18 12:24:21,299 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-18 12:24:21,300 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-18 12:24:21,300 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-18 12:24:21,301 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-18 12:24:21,302 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:24:20" (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 [2018-09-18 12:24:21,378 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-18 12:24:21,378 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-18 12:24:21,378 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-09-18 12:24:21,379 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-09-18 12:24:21,379 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-09-18 12:24:21,379 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-09-18 12:24:21,379 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-18 12:24:21,379 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-18 12:24:21,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-18 12:24:21,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-18 12:24:21,380 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-18 12:24:21,380 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-18 12:24:29,392 INFO L356 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-18 12:24:29,393 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 12:24:29 BoogieIcfgContainer [2018-09-18 12:24:29,393 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-18 12:24:29,394 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-18 12:24:29,395 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-18 12:24:29,398 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-18 12:24:29,398 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.09 12:24:18" (1/3) ... [2018-09-18 12:24:29,399 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fdb760c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 12:24:29, skipping insertion in model container [2018-09-18 12:24:29,399 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:24:20" (2/3) ... [2018-09-18 12:24:29,400 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fdb760c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 12:24:29, skipping insertion in model container [2018-09-18 12:24:29,400 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 12:24:29" (3/3) ... [2018-09-18 12:24:29,402 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label40_true-unreach-call.c [2018-09-18 12:24:29,412 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-18 12:24:29,423 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-18 12:24:29,490 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-18 12:24:29,491 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-18 12:24:29,491 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-18 12:24:29,491 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-18 12:24:29,491 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-18 12:24:29,492 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-18 12:24:29,492 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-18 12:24:29,492 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-18 12:24:29,492 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-18 12:24:29,545 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-09-18 12:24:29,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-09-18 12:24:29,557 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:24:29,559 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 12:24:29,560 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:24:29,565 INFO L82 PathProgramCache]: Analyzing trace with hash 1179800183, now seen corresponding path program 1 times [2018-09-18 12:24:29,567 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:24:29,613 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:24:29,613 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:24:29,613 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:24:29,613 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:24:29,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:24:30,074 WARN L178 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 12:24:30,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:24:30,196 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 12:24:30,196 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-18 12:24:30,197 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:24:30,203 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-18 12:24:30,220 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-18 12:24:30,220 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-18 12:24:30,223 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 3 states. [2018-09-18 12:24:36,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:24:36,988 INFO L93 Difference]: Finished difference Result 2251 states and 4322 transitions. [2018-09-18 12:24:36,988 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-18 12:24:36,990 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 51 [2018-09-18 12:24:36,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:24:37,022 INFO L225 Difference]: With dead ends: 2251 [2018-09-18 12:24:37,022 INFO L226 Difference]: Without dead ends: 1474 [2018-09-18 12:24:37,034 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-18 12:24:37,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2018-09-18 12:24:37,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1474. [2018-09-18 12:24:37,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2018-09-18 12:24:37,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2721 transitions. [2018-09-18 12:24:37,186 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2721 transitions. Word has length 51 [2018-09-18 12:24:37,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:24:37,187 INFO L480 AbstractCegarLoop]: Abstraction has 1474 states and 2721 transitions. [2018-09-18 12:24:37,187 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-18 12:24:37,187 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2721 transitions. [2018-09-18 12:24:37,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-09-18 12:24:37,201 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:24:37,202 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 12:24:37,202 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:24:37,204 INFO L82 PathProgramCache]: Analyzing trace with hash 1038500593, now seen corresponding path program 1 times [2018-09-18 12:24:37,204 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:24:37,205 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:24:37,206 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:24:37,206 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:24:37,206 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:24:37,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:24:37,641 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:24:37,641 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 12:24:37,641 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-18 12:24:37,642 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:24:37,644 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-18 12:24:37,644 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-18 12:24:37,644 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-18 12:24:37,645 INFO L87 Difference]: Start difference. First operand 1474 states and 2721 transitions. Second operand 6 states. [2018-09-18 12:24:46,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:24:46,565 INFO L93 Difference]: Finished difference Result 4419 states and 8244 transitions. [2018-09-18 12:24:46,566 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-18 12:24:46,566 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 140 [2018-09-18 12:24:46,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:24:46,587 INFO L225 Difference]: With dead ends: 4419 [2018-09-18 12:24:46,588 INFO L226 Difference]: Without dead ends: 2951 [2018-09-18 12:24:46,593 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-18 12:24:46,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2951 states. [2018-09-18 12:24:46,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2951 to 2928. [2018-09-18 12:24:46,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2928 states. [2018-09-18 12:24:46,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2928 states to 2928 states and 5087 transitions. [2018-09-18 12:24:46,714 INFO L78 Accepts]: Start accepts. Automaton has 2928 states and 5087 transitions. Word has length 140 [2018-09-18 12:24:46,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:24:46,715 INFO L480 AbstractCegarLoop]: Abstraction has 2928 states and 5087 transitions. [2018-09-18 12:24:46,715 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-18 12:24:46,715 INFO L276 IsEmpty]: Start isEmpty. Operand 2928 states and 5087 transitions. [2018-09-18 12:24:46,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2018-09-18 12:24:46,723 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:24:46,723 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 12:24:46,724 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:24:46,724 INFO L82 PathProgramCache]: Analyzing trace with hash -429800468, now seen corresponding path program 1 times [2018-09-18 12:24:46,724 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:24:46,727 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:24:46,729 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:24:46,729 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:24:46,729 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:24:46,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:24:47,073 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:24:47,073 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 12:24:47,073 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-18 12:24:47,073 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:24:47,074 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-18 12:24:47,074 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-18 12:24:47,074 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-18 12:24:47,075 INFO L87 Difference]: Start difference. First operand 2928 states and 5087 transitions. Second operand 6 states. [2018-09-18 12:24:56,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:24:56,303 INFO L93 Difference]: Finished difference Result 10194 states and 17948 transitions. [2018-09-18 12:24:56,303 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-18 12:24:56,303 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 187 [2018-09-18 12:24:56,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:24:56,354 INFO L225 Difference]: With dead ends: 10194 [2018-09-18 12:24:56,354 INFO L226 Difference]: Without dead ends: 7272 [2018-09-18 12:24:56,372 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 [2018-09-18 12:24:56,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7272 states. [2018-09-18 12:24:56,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7272 to 7208. [2018-09-18 12:24:56,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7208 states. [2018-09-18 12:24:56,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7208 states to 7208 states and 11881 transitions. [2018-09-18 12:24:56,609 INFO L78 Accepts]: Start accepts. Automaton has 7208 states and 11881 transitions. Word has length 187 [2018-09-18 12:24:56,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:24:56,609 INFO L480 AbstractCegarLoop]: Abstraction has 7208 states and 11881 transitions. [2018-09-18 12:24:56,610 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-18 12:24:56,610 INFO L276 IsEmpty]: Start isEmpty. Operand 7208 states and 11881 transitions. [2018-09-18 12:24:56,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2018-09-18 12:24:56,617 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:24:56,618 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 12:24:56,618 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:24:56,618 INFO L82 PathProgramCache]: Analyzing trace with hash 1302575248, now seen corresponding path program 1 times [2018-09-18 12:24:56,619 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:24:56,620 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:24:56,621 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:24:56,621 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:24:56,621 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:24:56,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:24:56,971 WARN L178 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 12:24:57,218 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:24:57,219 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 12:24:57,219 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-18 12:24:57,219 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:24:57,220 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-18 12:24:57,220 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-18 12:24:57,220 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-18 12:24:57,221 INFO L87 Difference]: Start difference. First operand 7208 states and 11881 transitions. Second operand 6 states. [2018-09-18 12:25:02,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:25:02,777 INFO L93 Difference]: Finished difference Result 17365 states and 29107 transitions. [2018-09-18 12:25:02,778 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-18 12:25:02,778 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 189 [2018-09-18 12:25:02,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:25:02,827 INFO L225 Difference]: With dead ends: 17365 [2018-09-18 12:25:02,828 INFO L226 Difference]: Without dead ends: 10163 [2018-09-18 12:25:02,852 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-18 12:25:02,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10163 states. [2018-09-18 12:25:03,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10163 to 10108. [2018-09-18 12:25:03,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10108 states. [2018-09-18 12:25:03,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10108 states to 10108 states and 14258 transitions. [2018-09-18 12:25:03,099 INFO L78 Accepts]: Start accepts. Automaton has 10108 states and 14258 transitions. Word has length 189 [2018-09-18 12:25:03,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:25:03,099 INFO L480 AbstractCegarLoop]: Abstraction has 10108 states and 14258 transitions. [2018-09-18 12:25:03,100 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-18 12:25:03,100 INFO L276 IsEmpty]: Start isEmpty. Operand 10108 states and 14258 transitions. [2018-09-18 12:25:03,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2018-09-18 12:25:03,107 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:25:03,108 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-18 12:25:03,108 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:25:03,108 INFO L82 PathProgramCache]: Analyzing trace with hash -1778582221, now seen corresponding path program 1 times [2018-09-18 12:25:03,109 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:25:03,109 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:25:03,110 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:25:03,110 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:25:03,110 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:25:03,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:25:03,406 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2018-09-18 12:25:03,406 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 12:25:03,406 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-18 12:25:03,407 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:25:03,407 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-18 12:25:03,408 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-18 12:25:03,408 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-18 12:25:03,408 INFO L87 Difference]: Start difference. First operand 10108 states and 14258 transitions. Second operand 4 states. [2018-09-18 12:25:13,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:25:13,485 INFO L93 Difference]: Finished difference Result 28811 states and 41798 transitions. [2018-09-18 12:25:13,489 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-18 12:25:13,489 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 247 [2018-09-18 12:25:13,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:25:13,558 INFO L225 Difference]: With dead ends: 28811 [2018-09-18 12:25:13,558 INFO L226 Difference]: Without dead ends: 18709 [2018-09-18 12:25:13,605 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 [2018-09-18 12:25:13,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18709 states. [2018-09-18 12:25:13,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18709 to 18709. [2018-09-18 12:25:13,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18709 states. [2018-09-18 12:25:13,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18709 states to 18709 states and 25926 transitions. [2018-09-18 12:25:13,995 INFO L78 Accepts]: Start accepts. Automaton has 18709 states and 25926 transitions. Word has length 247 [2018-09-18 12:25:13,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:25:13,996 INFO L480 AbstractCegarLoop]: Abstraction has 18709 states and 25926 transitions. [2018-09-18 12:25:13,996 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-18 12:25:13,996 INFO L276 IsEmpty]: Start isEmpty. Operand 18709 states and 25926 transitions. [2018-09-18 12:25:14,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2018-09-18 12:25:14,014 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:25:14,015 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-18 12:25:14,015 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:25:14,015 INFO L82 PathProgramCache]: Analyzing trace with hash 1669490635, now seen corresponding path program 1 times [2018-09-18 12:25:14,016 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:25:14,016 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:25:14,016 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:25:14,017 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:25:14,017 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:25:14,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:25:14,427 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 148 proven. 42 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 12:25:14,428 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:25:14,429 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 [2018-09-18 12:25:14,453 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:25:14,454 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:25:14,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:25:14,588 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:25:14,829 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2018-09-18 12:25:14,829 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:25:15,243 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2018-09-18 12:25:15,279 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-18 12:25:15,279 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5] total 7 [2018-09-18 12:25:15,279 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:25:15,280 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-18 12:25:15,280 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-18 12:25:15,281 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-09-18 12:25:15,281 INFO L87 Difference]: Start difference. First operand 18709 states and 25926 transitions. Second operand 3 states. [2018-09-18 12:25:20,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:25:20,835 INFO L93 Difference]: Finished difference Result 37412 states and 51886 transitions. [2018-09-18 12:25:20,839 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-18 12:25:20,839 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 291 [2018-09-18 12:25:20,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:25:20,929 INFO L225 Difference]: With dead ends: 37412 [2018-09-18 12:25:20,929 INFO L226 Difference]: Without dead ends: 18709 [2018-09-18 12:25:20,998 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 588 GetRequests, 583 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-09-18 12:25:21,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18709 states. [2018-09-18 12:25:21,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18709 to 17998. [2018-09-18 12:25:21,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17998 states. [2018-09-18 12:25:21,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17998 states to 17998 states and 23911 transitions. [2018-09-18 12:25:21,409 INFO L78 Accepts]: Start accepts. Automaton has 17998 states and 23911 transitions. Word has length 291 [2018-09-18 12:25:21,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:25:21,410 INFO L480 AbstractCegarLoop]: Abstraction has 17998 states and 23911 transitions. [2018-09-18 12:25:21,410 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-18 12:25:21,410 INFO L276 IsEmpty]: Start isEmpty. Operand 17998 states and 23911 transitions. [2018-09-18 12:25:21,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2018-09-18 12:25:21,433 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:25:21,433 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 12:25:21,433 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:25:21,434 INFO L82 PathProgramCache]: Analyzing trace with hash 932475385, now seen corresponding path program 1 times [2018-09-18 12:25:21,434 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:25:21,435 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:25:21,435 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:25:21,440 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:25:21,441 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:25:21,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:25:21,895 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:25:21,895 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 12:25:21,896 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-18 12:25:21,896 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:25:21,896 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 12:25:21,897 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 12:25:21,897 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-18 12:25:21,897 INFO L87 Difference]: Start difference. First operand 17998 states and 23911 transitions. Second operand 5 states. [2018-09-18 12:25:34,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:25:34,076 INFO L93 Difference]: Finished difference Result 56022 states and 75677 transitions. [2018-09-18 12:25:34,081 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-18 12:25:34,082 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 304 [2018-09-18 12:25:34,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:25:34,258 INFO L225 Difference]: With dead ends: 56022 [2018-09-18 12:25:34,258 INFO L226 Difference]: Without dead ends: 38030 [2018-09-18 12:25:34,301 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-09-18 12:25:34,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38030 states. [2018-09-18 12:25:34,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38030 to 36506. [2018-09-18 12:25:34,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36506 states. [2018-09-18 12:25:34,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36506 states to 36506 states and 45529 transitions. [2018-09-18 12:25:34,995 INFO L78 Accepts]: Start accepts. Automaton has 36506 states and 45529 transitions. Word has length 304 [2018-09-18 12:25:34,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:25:34,996 INFO L480 AbstractCegarLoop]: Abstraction has 36506 states and 45529 transitions. [2018-09-18 12:25:34,996 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 12:25:34,996 INFO L276 IsEmpty]: Start isEmpty. Operand 36506 states and 45529 transitions. [2018-09-18 12:25:35,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 482 [2018-09-18 12:25:35,053 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:25:35,054 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 12:25:35,054 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:25:35,055 INFO L82 PathProgramCache]: Analyzing trace with hash 1557504778, now seen corresponding path program 1 times [2018-09-18 12:25:35,055 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:25:35,056 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:25:35,056 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:25:35,056 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:25:35,056 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:25:35,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:25:35,900 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 310 proven. 2 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-09-18 12:25:35,900 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:25:35,900 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 [2018-09-18 12:25:35,916 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:25:35,917 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:25:36,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:25:36,054 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:25:36,403 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 310 proven. 2 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-09-18 12:25:36,403 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:25:36,979 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 310 proven. 2 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (3)] Abandoning pump threads because process wont die! [2018-09-18 12:25:37,372 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:25:37,372 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 4 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 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 12:25:37,398 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:25:37,399 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:25:37,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:25:37,673 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:25:37,926 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 310 proven. 2 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-09-18 12:25:37,926 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:25:38,710 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 310 proven. 2 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [MP cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (4)] Exception during sending of exit command (exit): Broken pipe [2018-09-18 12:25:38,714 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 12:25:38,714 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-09-18 12:25:38,714 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 12:25:38,718 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-18 12:25:38,718 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-18 12:25:38,718 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-09-18 12:25:38,720 INFO L87 Difference]: Start difference. First operand 36506 states and 45529 transitions. Second operand 9 states. [2018-09-18 12:25:48,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:25:48,693 INFO L93 Difference]: Finished difference Result 93404 states and 122063 transitions. [2018-09-18 12:25:48,697 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-18 12:25:48,697 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 481 [2018-09-18 12:25:48,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:25:48,909 INFO L225 Difference]: With dead ends: 93404 [2018-09-18 12:25:48,909 INFO L226 Difference]: Without dead ends: 56904 [2018-09-18 12:25:49,013 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1941 GetRequests, 1918 SyntacticMatches, 7 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2018-09-18 12:25:49,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56904 states. [2018-09-18 12:25:49,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56904 to 55895. [2018-09-18 12:25:49,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55895 states. [2018-09-18 12:25:50,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55895 states to 55895 states and 67792 transitions. [2018-09-18 12:25:50,074 INFO L78 Accepts]: Start accepts. Automaton has 55895 states and 67792 transitions. Word has length 481 [2018-09-18 12:25:50,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:25:50,074 INFO L480 AbstractCegarLoop]: Abstraction has 55895 states and 67792 transitions. [2018-09-18 12:25:50,075 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-18 12:25:50,075 INFO L276 IsEmpty]: Start isEmpty. Operand 55895 states and 67792 transitions. [2018-09-18 12:25:50,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 525 [2018-09-18 12:25:50,149 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:25:50,149 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 12:25:50,150 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:25:50,150 INFO L82 PathProgramCache]: Analyzing trace with hash -1852128179, now seen corresponding path program 1 times [2018-09-18 12:25:50,150 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:25:50,151 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:25:50,151 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:25:50,151 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:25:50,152 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:25:50,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:25:50,803 INFO L134 CoverageAnalysis]: Checked inductivity of 449 backedges. 232 proven. 96 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2018-09-18 12:25:50,803 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:25:50,803 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 [2018-09-18 12:25:50,812 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:25:50,812 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:25:50,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:25:50,937 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:25:51,581 INFO L134 CoverageAnalysis]: Checked inductivity of 449 backedges. 402 proven. 2 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2018-09-18 12:25:51,581 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:25:51,811 INFO L134 CoverageAnalysis]: Checked inductivity of 449 backedges. 232 proven. 96 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2018-09-18 12:25:51,832 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:25:51,832 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 6 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 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 12:25:51,850 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:25:51,850 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:25:52,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:25:52,132 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:25:52,337 INFO L134 CoverageAnalysis]: Checked inductivity of 449 backedges. 402 proven. 2 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2018-09-18 12:25:52,337 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:25:52,617 INFO L134 CoverageAnalysis]: Checked inductivity of 449 backedges. 232 proven. 96 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2018-09-18 12:25:52,620 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 12:25:52,620 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 16 [2018-09-18 12:25:52,620 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 12:25:52,622 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-18 12:25:52,622 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-18 12:25:52,622 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2018-09-18 12:25:52,622 INFO L87 Difference]: Start difference. First operand 55895 states and 67792 transitions. Second operand 9 states. [2018-09-18 12:26:09,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:26:09,256 INFO L93 Difference]: Finished difference Result 138496 states and 177647 transitions. [2018-09-18 12:26:09,257 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-09-18 12:26:09,257 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 524 [2018-09-18 12:26:09,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:26:09,561 INFO L225 Difference]: With dead ends: 138496 [2018-09-18 12:26:09,562 INFO L226 Difference]: Without dead ends: 83310 [2018-09-18 12:26:09,737 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2118 GetRequests, 2094 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=143, Invalid=457, Unknown=0, NotChecked=0, Total=600 [2018-09-18 12:26:09,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83310 states. [2018-09-18 12:26:11,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83310 to 82494. [2018-09-18 12:26:11,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82494 states. [2018-09-18 12:26:11,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82494 states to 82494 states and 101790 transitions. [2018-09-18 12:26:11,687 INFO L78 Accepts]: Start accepts. Automaton has 82494 states and 101790 transitions. Word has length 524 [2018-09-18 12:26:11,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:26:11,688 INFO L480 AbstractCegarLoop]: Abstraction has 82494 states and 101790 transitions. [2018-09-18 12:26:11,688 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-18 12:26:11,688 INFO L276 IsEmpty]: Start isEmpty. Operand 82494 states and 101790 transitions. [2018-09-18 12:26:11,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 563 [2018-09-18 12:26:11,826 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:26:11,826 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-18 12:26:11,827 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:26:11,827 INFO L82 PathProgramCache]: Analyzing trace with hash -819305868, now seen corresponding path program 1 times [2018-09-18 12:26:11,827 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:26:11,828 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:26:11,828 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:26:11,829 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:26:11,829 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:26:11,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:26:12,607 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 152 proven. 52 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-09-18 12:26:12,608 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:26:12,608 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 12:26:12,615 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:26:12,615 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:26:12,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:26:12,750 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:26:12,920 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2018-09-18 12:26:12,920 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:26:13,157 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2018-09-18 12:26:13,179 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-18 12:26:13,179 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 8 [2018-09-18 12:26:13,179 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:26:13,180 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-18 12:26:13,180 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-18 12:26:13,180 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-09-18 12:26:13,180 INFO L87 Difference]: Start difference. First operand 82494 states and 101790 transitions. Second operand 3 states. [2018-09-18 12:26:17,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:26:17,949 INFO L93 Difference]: Finished difference Result 162250 states and 200729 transitions. [2018-09-18 12:26:17,950 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-18 12:26:17,950 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 562 [2018-09-18 12:26:17,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:26:18,182 INFO L225 Difference]: With dead ends: 162250 [2018-09-18 12:26:18,182 INFO L226 Difference]: Without dead ends: 80465 [2018-09-18 12:26:18,346 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1137 GetRequests, 1125 SyntacticMatches, 6 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-09-18 12:26:18,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80465 states. [2018-09-18 12:26:19,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80465 to 80465. [2018-09-18 12:26:19,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80465 states. [2018-09-18 12:26:19,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80465 states to 80465 states and 96461 transitions. [2018-09-18 12:26:19,542 INFO L78 Accepts]: Start accepts. Automaton has 80465 states and 96461 transitions. Word has length 562 [2018-09-18 12:26:19,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:26:19,543 INFO L480 AbstractCegarLoop]: Abstraction has 80465 states and 96461 transitions. [2018-09-18 12:26:19,543 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-18 12:26:19,543 INFO L276 IsEmpty]: Start isEmpty. Operand 80465 states and 96461 transitions. [2018-09-18 12:26:19,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 687 [2018-09-18 12:26:19,624 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:26:19,625 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 12:26:19,625 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:26:19,625 INFO L82 PathProgramCache]: Analyzing trace with hash -802158999, now seen corresponding path program 1 times [2018-09-18 12:26:19,625 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:26:19,626 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:26:19,626 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:26:19,626 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:26:19,627 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:26:19,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:26:20,073 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 209 proven. 73 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2018-09-18 12:26:20,073 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:26:20,073 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 [2018-09-18 12:26:20,084 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:26:20,084 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:26:20,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:26:20,248 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:26:21,160 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 356 proven. 2 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2018-09-18 12:26:21,160 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:26:21,491 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 209 proven. 73 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2018-09-18 12:26:21,512 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:26:21,513 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 [2018-09-18 12:26:21,528 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:26:21,529 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:26:21,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:26:21,896 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:26:22,415 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 356 proven. 2 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2018-09-18 12:26:22,416 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:26:23,308 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 209 proven. 73 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2018-09-18 12:26:23,311 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 12:26:23,312 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-09-18 12:26:23,312 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 12:26:23,313 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-18 12:26:23,314 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-18 12:26:23,314 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-09-18 12:26:23,314 INFO L87 Difference]: Start difference. First operand 80465 states and 96461 transitions. Second operand 9 states. [2018-09-18 12:26:37,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:26:37,686 INFO L93 Difference]: Finished difference Result 209708 states and 275735 transitions. [2018-09-18 12:26:37,686 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-09-18 12:26:37,686 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 686 [2018-09-18 12:26:37,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:26:38,280 INFO L225 Difference]: With dead ends: 209708 [2018-09-18 12:26:38,280 INFO L226 Difference]: Without dead ends: 123437 [2018-09-18 12:26:38,561 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2766 GetRequests, 2741 SyntacticMatches, 7 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2018-09-18 12:26:38,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123437 states. [2018-09-18 12:26:40,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123437 to 119766. [2018-09-18 12:26:40,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119766 states. [2018-09-18 12:26:40,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119766 states to 119766 states and 153054 transitions. [2018-09-18 12:26:40,664 INFO L78 Accepts]: Start accepts. Automaton has 119766 states and 153054 transitions. Word has length 686 [2018-09-18 12:26:40,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:26:40,665 INFO L480 AbstractCegarLoop]: Abstraction has 119766 states and 153054 transitions. [2018-09-18 12:26:40,665 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-18 12:26:40,665 INFO L276 IsEmpty]: Start isEmpty. Operand 119766 states and 153054 transitions. [2018-09-18 12:26:40,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 812 [2018-09-18 12:26:40,802 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:26:40,803 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 12:26:40,803 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:26:40,803 INFO L82 PathProgramCache]: Analyzing trace with hash -1096384672, now seen corresponding path program 1 times [2018-09-18 12:26:40,803 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:26:40,804 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:26:40,804 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:26:40,804 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:26:40,805 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:26:40,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:26:41,171 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-09-18 12:26:41,583 WARN L178 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-09-18 12:26:43,346 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 233 proven. 223 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2018-09-18 12:26:43,347 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:26:43,347 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 [2018-09-18 12:26:43,354 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:26:43,355 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:26:43,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:26:43,548 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:26:44,335 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 455 proven. 2 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2018-09-18 12:26:44,335 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:26:45,070 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 455 proven. 2 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2018-09-18 12:26:45,092 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:26:45,092 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 11 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 11 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 12:26:45,108 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:26:45,108 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:26:45,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:26:45,519 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:26:46,099 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 455 proven. 2 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2018-09-18 12:26:46,099 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:26:46,971 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 455 proven. 2 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2018-09-18 12:26:46,974 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 12:26:46,975 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 5, 5, 5, 5] total 22 [2018-09-18 12:26:46,975 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 12:26:46,977 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-09-18 12:26:46,978 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-09-18 12:26:46,978 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=385, Unknown=0, NotChecked=0, Total=462 [2018-09-18 12:26:46,978 INFO L87 Difference]: Start difference. First operand 119766 states and 153054 transitions. Second operand 16 states. [2018-09-18 12:27:08,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:27:08,514 INFO L93 Difference]: Finished difference Result 237883 states and 306678 transitions. [2018-09-18 12:27:08,514 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-09-18 12:27:08,515 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 811 [2018-09-18 12:27:08,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:27:09,060 INFO L225 Difference]: With dead ends: 237883 [2018-09-18 12:27:09,060 INFO L226 Difference]: Without dead ends: 117578 [2018-09-18 12:27:09,482 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3329 GetRequests, 3266 SyntacticMatches, 3 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1026 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=695, Invalid=3087, Unknown=0, NotChecked=0, Total=3782 [2018-09-18 12:27:09,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117578 states. [2018-09-18 12:27:11,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117578 to 117380. [2018-09-18 12:27:11,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117380 states. [2018-09-18 12:27:11,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117380 states to 117380 states and 135645 transitions. [2018-09-18 12:27:11,829 INFO L78 Accepts]: Start accepts. Automaton has 117380 states and 135645 transitions. Word has length 811 [2018-09-18 12:27:11,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:27:11,829 INFO L480 AbstractCegarLoop]: Abstraction has 117380 states and 135645 transitions. [2018-09-18 12:27:11,829 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-09-18 12:27:11,829 INFO L276 IsEmpty]: Start isEmpty. Operand 117380 states and 135645 transitions. [2018-09-18 12:27:11,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 957 [2018-09-18 12:27:11,932 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:27:11,933 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-18 12:27:11,933 INFO L423 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:27:11,933 INFO L82 PathProgramCache]: Analyzing trace with hash -755218424, now seen corresponding path program 1 times [2018-09-18 12:27:11,933 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:27:11,934 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:27:11,934 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:27:11,934 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:27:11,935 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:27:11,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:27:12,264 WARN L178 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 12:27:13,328 INFO L134 CoverageAnalysis]: Checked inductivity of 766 backedges. 132 proven. 236 refuted. 0 times theorem prover too weak. 398 trivial. 0 not checked. [2018-09-18 12:27:13,328 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:27:13,329 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 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 12:27:13,347 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:27:13,348 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:27:13,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:27:13,570 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:27:15,058 INFO L134 CoverageAnalysis]: Checked inductivity of 766 backedges. 284 proven. 0 refuted. 0 times theorem prover too weak. 482 trivial. 0 not checked. [2018-09-18 12:27:15,058 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:27:19,190 INFO L134 CoverageAnalysis]: Checked inductivity of 766 backedges. 132 proven. 170 refuted. 0 times theorem prover too weak. 464 trivial. 0 not checked. [2018-09-18 12:27:19,212 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 12:27:19,212 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [7, 3] total 9 [2018-09-18 12:27:19,212 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:27:19,213 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-18 12:27:19,214 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-18 12:27:19,214 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2018-09-18 12:27:19,214 INFO L87 Difference]: Start difference. First operand 117380 states and 135645 transitions. Second operand 3 states. [2018-09-18 12:27:23,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:27:23,896 INFO L93 Difference]: Finished difference Result 263525 states and 306698 transitions. [2018-09-18 12:27:23,896 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-18 12:27:23,896 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 956 [2018-09-18 12:27:23,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:27:24,355 INFO L225 Difference]: With dead ends: 263525 [2018-09-18 12:27:24,355 INFO L226 Difference]: Without dead ends: 146098 [2018-09-18 12:27:24,735 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1919 GetRequests, 1911 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2018-09-18 12:27:24,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146098 states. [2018-09-18 12:27:27,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146098 to 143934. [2018-09-18 12:27:27,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143934 states. [2018-09-18 12:27:27,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143934 states to 143934 states and 163599 transitions. [2018-09-18 12:27:27,487 INFO L78 Accepts]: Start accepts. Automaton has 143934 states and 163599 transitions. Word has length 956 [2018-09-18 12:27:27,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:27:27,488 INFO L480 AbstractCegarLoop]: Abstraction has 143934 states and 163599 transitions. [2018-09-18 12:27:27,488 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-18 12:27:27,488 INFO L276 IsEmpty]: Start isEmpty. Operand 143934 states and 163599 transitions. [2018-09-18 12:27:27,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1132 [2018-09-18 12:27:27,599 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:27:27,600 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, 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, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-18 12:27:27,600 INFO L423 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:27:27,601 INFO L82 PathProgramCache]: Analyzing trace with hash -1536717727, now seen corresponding path program 1 times [2018-09-18 12:27:27,601 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:27:27,602 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:27:27,602 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:27:27,602 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:27:27,602 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:27:27,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:27:29,557 INFO L134 CoverageAnalysis]: Checked inductivity of 1695 backedges. 558 proven. 167 refuted. 0 times theorem prover too weak. 970 trivial. 0 not checked. [2018-09-18 12:27:29,557 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:27:29,557 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 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 12:27:29,565 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:27:29,565 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:27:29,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:27:29,823 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:27:30,671 INFO L134 CoverageAnalysis]: Checked inductivity of 1695 backedges. 1300 proven. 2 refuted. 0 times theorem prover too weak. 393 trivial. 0 not checked. [2018-09-18 12:27:30,671 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:27:31,380 INFO L134 CoverageAnalysis]: Checked inductivity of 1695 backedges. 558 proven. 167 refuted. 0 times theorem prover too weak. 970 trivial. 0 not checked. [2018-09-18 12:27:31,410 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:27:31,410 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 14 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 14 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 12:27:31,426 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:27:31,426 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:27:31,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:27:32,012 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:27:32,705 INFO L134 CoverageAnalysis]: Checked inductivity of 1695 backedges. 1300 proven. 2 refuted. 0 times theorem prover too weak. 393 trivial. 0 not checked. [2018-09-18 12:27:32,705 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:27:33,343 INFO L134 CoverageAnalysis]: Checked inductivity of 1695 backedges. 558 proven. 167 refuted. 0 times theorem prover too weak. 970 trivial. 0 not checked. [2018-09-18 12:27:33,346 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 12:27:33,347 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-09-18 12:27:33,348 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 12:27:33,349 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-18 12:27:33,349 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-18 12:27:33,349 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-09-18 12:27:33,349 INFO L87 Difference]: Start difference. First operand 143934 states and 163599 transitions. Second operand 9 states. [2018-09-18 12:27:43,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:27:43,810 INFO L93 Difference]: Finished difference Result 274115 states and 306406 transitions. [2018-09-18 12:27:43,810 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-18 12:27:43,810 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1131 [2018-09-18 12:27:43,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:27:44,092 INFO L225 Difference]: With dead ends: 274115 [2018-09-18 12:27:44,093 INFO L226 Difference]: Without dead ends: 127429 [2018-09-18 12:27:44,380 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4542 GetRequests, 4519 SyntacticMatches, 7 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2018-09-18 12:27:44,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127429 states. [2018-09-18 12:27:46,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127429 to 122969. [2018-09-18 12:27:46,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122969 states. [2018-09-18 12:27:46,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122969 states to 122969 states and 132105 transitions. [2018-09-18 12:27:46,313 INFO L78 Accepts]: Start accepts. Automaton has 122969 states and 132105 transitions. Word has length 1131 [2018-09-18 12:27:46,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:27:46,314 INFO L480 AbstractCegarLoop]: Abstraction has 122969 states and 132105 transitions. [2018-09-18 12:27:46,314 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-18 12:27:46,314 INFO L276 IsEmpty]: Start isEmpty. Operand 122969 states and 132105 transitions. [2018-09-18 12:27:46,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1563 [2018-09-18 12:27:46,392 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:27:46,393 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, 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, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 12:27:46,393 INFO L423 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:27:46,394 INFO L82 PathProgramCache]: Analyzing trace with hash 833602568, now seen corresponding path program 1 times [2018-09-18 12:27:46,394 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:27:46,395 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:27:46,395 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:27:46,395 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:27:46,395 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:27:46,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:27:49,314 INFO L134 CoverageAnalysis]: Checked inductivity of 2247 backedges. 296 proven. 1248 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2018-09-18 12:27:49,315 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:27:49,315 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 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 12:27:49,328 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:27:49,328 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:27:49,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:27:49,681 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:27:51,316 INFO L134 CoverageAnalysis]: Checked inductivity of 2247 backedges. 285 proven. 0 refuted. 0 times theorem prover too weak. 1962 trivial. 0 not checked. [2018-09-18 12:27:51,316 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:27:52,215 INFO L134 CoverageAnalysis]: Checked inductivity of 2247 backedges. 285 proven. 0 refuted. 0 times theorem prover too weak. 1962 trivial. 0 not checked. [2018-09-18 12:27:52,237 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-18 12:27:52,238 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 9 [2018-09-18 12:27:52,238 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:27:52,239 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-18 12:27:52,239 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-18 12:27:52,239 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-09-18 12:27:52,240 INFO L87 Difference]: Start difference. First operand 122969 states and 132105 transitions. Second operand 3 states. [2018-09-18 12:27:58,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:27:58,825 INFO L93 Difference]: Finished difference Result 276885 states and 299623 transitions. [2018-09-18 12:27:58,826 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-18 12:27:58,826 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 1562 [2018-09-18 12:27:58,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. Received shutdown request... [2018-09-18 12:27:59,215 INFO L225 Difference]: With dead ends: 276885 [2018-09-18 12:27:59,215 INFO L226 Difference]: Without dead ends: 154625 [2018-09-18 12:27:59,452 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3140 GetRequests, 3131 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-09-18 12:27:59,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154625 states. [2018-09-18 12:27:59,574 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-18 12:27:59,577 WARN L206 ceAbstractionStarter]: Timeout [2018-09-18 12:27:59,578 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.09 12:27:59 BoogieIcfgContainer [2018-09-18 12:27:59,578 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-18 12:27:59,579 INFO L168 Benchmark]: Toolchain (without parser) took 220892.57 ms. Allocated memory was 1.5 GB in the beginning and 4.8 GB in the end (delta: 3.3 GB). Free memory was 1.4 GB in the beginning and 2.5 GB in the end (delta: -1.1 GB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. [2018-09-18 12:27:59,580 INFO L168 Benchmark]: CDTParser took 0.18 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. [2018-09-18 12:27:59,580 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1752.97 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: 180.0 MB). Peak memory consumption was 180.0 MB. Max. memory is 7.1 GB. [2018-09-18 12:27:59,581 INFO L168 Benchmark]: Boogie Procedure Inliner took 213.07 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-09-18 12:27:59,582 INFO L168 Benchmark]: Boogie Preprocessor took 642.06 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 845.7 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 85.6 MB. Max. memory is 7.1 GB. [2018-09-18 12:27:59,583 INFO L168 Benchmark]: RCFGBuilder took 8093.50 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 1.8 GB in the end (delta: 481.0 MB). Peak memory consumption was 481.0 MB. Max. memory is 7.1 GB. [2018-09-18 12:27:59,583 INFO L168 Benchmark]: TraceAbstraction took 210183.76 ms. Allocated memory was 2.4 GB in the beginning and 4.8 GB in the end (delta: 2.4 GB). Free memory was 1.8 GB in the beginning and 2.5 GB in the end (delta: -750.3 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2018-09-18 12:27:59,588 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 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 1752.97 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: 180.0 MB). Peak memory consumption was 180.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 213.07 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 642.06 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 845.7 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 85.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8093.50 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 1.8 GB in the end (delta: 481.0 MB). Peak memory consumption was 481.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 210183.76 ms. Allocated memory was 2.4 GB in the beginning and 4.8 GB in the end (delta: 2.4 GB). Free memory was 1.8 GB in the beginning and 2.5 GB in the end (delta: -750.3 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 141]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 141). Cancelled while executing MinimizeSevpa. - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 775 locations, 1 error locations. TIMEOUT Result, 210.0s OverallTime, 15 OverallIterations, 7 TraceHistogramMax, 153.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 6315 SDtfs, 56803 SDslu, 2857 SDs, 0 SdLazy, 92107 SolverSat, 20639 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 108.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 21529 GetRequests, 21302 SyntacticMatches, 39 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1389 ImplicationChecksByTransitivity, 10.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=143934occurred in iteration=13, 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: 15.6s AutomataMinimizationTime, 15 MinimizatonAttempts, 14695 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.5s SsaConstructionTime, 3.6s SatisfiabilityAnalysisTime, 29.1s InterpolantComputationTime, 18759 NumberOfCodeBlocks, 18759 NumberOfCodeBlocksAsserted, 29 NumberOfCheckSat, 29353 ConstructedInterpolants, 50 QuantifiedInterpolants, 53212839 SizeOfPredicates, 11 NumberOfNonLiveVariables, 14412 ConjunctsInSsa, 81 ConjunctsInUnsatCore, 43 InterpolantComputations, 13 PerfectInterpolantSequences, 24991/28000 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/Problem18_label40_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-18_12-27-59-603.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem18_label40_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-18_12-27-59-603.csv Completed graceful shutdown