java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label14_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-25 01:55:11,517 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-25 01:55:11,520 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-25 01:55:11,532 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-25 01:55:11,533 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-25 01:55:11,534 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-25 01:55:11,535 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-25 01:55:11,537 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-25 01:55:11,539 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-25 01:55:11,540 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-25 01:55:11,541 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-25 01:55:11,541 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-25 01:55:11,542 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-25 01:55:11,543 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-25 01:55:11,545 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-25 01:55:11,545 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-25 01:55:11,546 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-25 01:55:11,548 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-25 01:55:11,550 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-25 01:55:11,552 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-25 01:55:11,553 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-25 01:55:11,555 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-25 01:55:11,557 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-25 01:55:11,558 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-25 01:55:11,558 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-25 01:55:11,559 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-25 01:55:11,560 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-25 01:55:11,561 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-25 01:55:11,562 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-25 01:55:11,563 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-25 01:55:11,563 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-25 01:55:11,564 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-25 01:55:11,566 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-10-25 01:55:11,593 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-25 01:55:11,594 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-25 01:55:11,595 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-25 01:55:11,595 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-25 01:55:11,595 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-25 01:55:11,596 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-25 01:55:11,596 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-25 01:55:11,596 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-25 01:55:11,597 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-25 01:55:11,597 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-25 01:55:11,597 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-25 01:55:11,597 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-25 01:55:11,597 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-25 01:55:11,597 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-25 01:55:11,598 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-25 01:55:11,598 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-25 01:55:11,601 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-25 01:55:11,601 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-25 01:55:11,601 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-25 01:55:11,602 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-25 01:55:11,602 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-25 01:55:11,602 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-25 01:55:11,602 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-25 01:55:11,603 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-25 01:55:11,603 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-25 01:55:11,603 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-25 01:55:11,603 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-25 01:55:11,603 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-25 01:55:11,603 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-25 01:55:11,604 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-25 01:55:11,604 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-25 01:55:11,604 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-25 01:55:11,604 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-25 01:55:11,604 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-25 01:55:11,605 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-25 01:55:11,605 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-25 01:55:11,659 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-25 01:55:11,674 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-25 01:55:11,681 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-25 01:55:11,683 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-25 01:55:11,684 INFO L276 PluginConnector]: CDTParser initialized [2018-10-25 01:55:11,685 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label14_true-unreach-call.c [2018-10-25 01:55:11,753 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/8859ed89b/7213f029c778412387d91b8051ee1728/FLAGff622cb13 [2018-10-25 01:55:12,503 INFO L298 CDTParser]: Found 1 translation units. [2018-10-25 01:55:12,504 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label14_true-unreach-call.c [2018-10-25 01:55:12,531 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/8859ed89b/7213f029c778412387d91b8051ee1728/FLAGff622cb13 [2018-10-25 01:55:12,557 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/8859ed89b/7213f029c778412387d91b8051ee1728 [2018-10-25 01:55:12,570 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-25 01:55:12,573 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-25 01:55:12,575 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-25 01:55:12,575 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-25 01:55:12,579 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-25 01:55:12,580 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 01:55:12" (1/1) ... [2018-10-25 01:55:12,583 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c4dd763 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:55:12, skipping insertion in model container [2018-10-25 01:55:12,583 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 01:55:12" (1/1) ... [2018-10-25 01:55:12,594 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-25 01:55:12,717 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-25 01:55:13,771 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-25 01:55:13,776 INFO L189 MainTranslator]: Completed pre-run [2018-10-25 01:55:14,172 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-25 01:55:14,196 INFO L193 MainTranslator]: Completed translation [2018-10-25 01:55:14,197 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:55:14 WrapperNode [2018-10-25 01:55:14,197 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-25 01:55:14,199 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-25 01:55:14,199 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-25 01:55:14,199 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-25 01:55:14,210 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:55:14" (1/1) ... [2018-10-25 01:55:14,270 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:55:14" (1/1) ... [2018-10-25 01:55:14,680 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-25 01:55:14,681 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-25 01:55:14,681 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-25 01:55:14,681 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-25 01:55:14,692 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:55:14" (1/1) ... [2018-10-25 01:55:14,693 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:55:14" (1/1) ... [2018-10-25 01:55:14,720 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:55:14" (1/1) ... [2018-10-25 01:55:14,721 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:55:14" (1/1) ... [2018-10-25 01:55:14,799 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:55:14" (1/1) ... [2018-10-25 01:55:14,833 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:55:14" (1/1) ... [2018-10-25 01:55:14,865 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:55:14" (1/1) ... [2018-10-25 01:55:14,896 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-25 01:55:14,897 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-25 01:55:14,897 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-25 01:55:14,897 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-25 01:55:14,899 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:55:14" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-25 01:55:14,969 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-25 01:55:14,970 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-25 01:55:14,970 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-25 01:55:14,970 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-25 01:55:14,970 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-25 01:55:14,970 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-25 01:55:14,971 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-25 01:55:14,971 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-25 01:55:14,971 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-25 01:55:14,971 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-25 01:55:29,003 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-25 01:55:29,004 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 01:55:29 BoogieIcfgContainer [2018-10-25 01:55:29,004 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-25 01:55:29,007 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-25 01:55:29,007 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-25 01:55:29,010 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-25 01:55:29,011 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 01:55:12" (1/3) ... [2018-10-25 01:55:29,011 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@898e142 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 01:55:29, skipping insertion in model container [2018-10-25 01:55:29,012 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:55:14" (2/3) ... [2018-10-25 01:55:29,012 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@898e142 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 01:55:29, skipping insertion in model container [2018-10-25 01:55:29,012 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 01:55:29" (3/3) ... [2018-10-25 01:55:29,015 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label14_true-unreach-call.c [2018-10-25 01:55:29,024 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-25 01:55:29,035 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-25 01:55:29,053 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-25 01:55:29,105 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-25 01:55:29,105 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-25 01:55:29,105 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-25 01:55:29,105 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-25 01:55:29,106 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-25 01:55:29,106 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-25 01:55:29,106 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-25 01:55:29,106 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-25 01:55:29,150 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-10-25 01:55:29,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-10-25 01:55:29,160 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:55:29,161 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 01:55:29,163 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:55:29,170 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:55:29,170 INFO L82 PathProgramCache]: Analyzing trace with hash 104391076, now seen corresponding path program 1 times [2018-10-25 01:55:29,173 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:55:29,222 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:55:29,223 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:55:29,223 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:55:29,223 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:55:29,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:55:29,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:55:29,714 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 01:55:29,714 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-25 01:55:29,715 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:55:29,721 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-25 01:55:29,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-25 01:55:29,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-25 01:55:29,742 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2018-10-25 01:55:43,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:55:43,670 INFO L93 Difference]: Finished difference Result 2162 states and 4007 transitions. [2018-10-25 01:55:43,671 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-25 01:55:43,672 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2018-10-25 01:55:43,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:55:43,708 INFO L225 Difference]: With dead ends: 2162 [2018-10-25 01:55:43,709 INFO L226 Difference]: Without dead ends: 1552 [2018-10-25 01:55:43,723 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-25 01:55:43,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1552 states. [2018-10-25 01:55:43,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1552 to 1525. [2018-10-25 01:55:43,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1525 states. [2018-10-25 01:55:43,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1525 states to 1525 states and 2696 transitions. [2018-10-25 01:55:43,876 INFO L78 Accepts]: Start accepts. Automaton has 1525 states and 2696 transitions. Word has length 54 [2018-10-25 01:55:43,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:55:43,877 INFO L481 AbstractCegarLoop]: Abstraction has 1525 states and 2696 transitions. [2018-10-25 01:55:43,877 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-25 01:55:43,877 INFO L276 IsEmpty]: Start isEmpty. Operand 1525 states and 2696 transitions. [2018-10-25 01:55:43,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2018-10-25 01:55:43,897 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:55:43,897 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 01:55:43,899 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:55:43,899 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:55:43,899 INFO L82 PathProgramCache]: Analyzing trace with hash -733218574, now seen corresponding path program 1 times [2018-10-25 01:55:43,899 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:55:43,901 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:55:43,901 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:55:43,902 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:55:43,902 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:55:43,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:55:44,241 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:55:44,241 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 01:55:44,241 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-25 01:55:44,242 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:55:44,244 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-25 01:55:44,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-25 01:55:44,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-25 01:55:44,244 INFO L87 Difference]: Start difference. First operand 1525 states and 2696 transitions. Second operand 6 states. [2018-10-25 01:56:07,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:56:07,510 INFO L93 Difference]: Finished difference Result 5787 states and 10682 transitions. [2018-10-25 01:56:07,511 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-25 01:56:07,511 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 133 [2018-10-25 01:56:07,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:56:07,549 INFO L225 Difference]: With dead ends: 5787 [2018-10-25 01:56:07,550 INFO L226 Difference]: Without dead ends: 4268 [2018-10-25 01:56:07,571 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-25 01:56:07,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4268 states. [2018-10-25 01:56:07,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4268 to 4242. [2018-10-25 01:56:07,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4242 states. [2018-10-25 01:56:07,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4242 states to 4242 states and 6360 transitions. [2018-10-25 01:56:07,711 INFO L78 Accepts]: Start accepts. Automaton has 4242 states and 6360 transitions. Word has length 133 [2018-10-25 01:56:07,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:56:07,711 INFO L481 AbstractCegarLoop]: Abstraction has 4242 states and 6360 transitions. [2018-10-25 01:56:07,712 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-25 01:56:07,712 INFO L276 IsEmpty]: Start isEmpty. Operand 4242 states and 6360 transitions. [2018-10-25 01:56:07,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-10-25 01:56:07,716 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:56:07,716 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 01:56:07,717 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:56:07,717 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:56:07,717 INFO L82 PathProgramCache]: Analyzing trace with hash 9362786, now seen corresponding path program 1 times [2018-10-25 01:56:07,717 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:56:07,718 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:56:07,718 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:56:07,719 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:56:07,719 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:56:07,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:56:07,895 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:56:07,895 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 01:56:07,895 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-25 01:56:07,896 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:56:07,896 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-25 01:56:07,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-25 01:56:07,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-25 01:56:07,897 INFO L87 Difference]: Start difference. First operand 4242 states and 6360 transitions. Second operand 6 states. [2018-10-25 01:56:15,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:56:15,714 INFO L93 Difference]: Finished difference Result 12710 states and 20700 transitions. [2018-10-25 01:56:15,715 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-25 01:56:15,715 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 134 [2018-10-25 01:56:15,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:56:15,776 INFO L225 Difference]: With dead ends: 12710 [2018-10-25 01:56:15,776 INFO L226 Difference]: Without dead ends: 8474 [2018-10-25 01:56:15,802 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-25 01:56:15,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8474 states. [2018-10-25 01:56:16,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8474 to 8389. [2018-10-25 01:56:16,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8389 states. [2018-10-25 01:56:16,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8389 states to 8389 states and 12579 transitions. [2018-10-25 01:56:16,080 INFO L78 Accepts]: Start accepts. Automaton has 8389 states and 12579 transitions. Word has length 134 [2018-10-25 01:56:16,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:56:16,081 INFO L481 AbstractCegarLoop]: Abstraction has 8389 states and 12579 transitions. [2018-10-25 01:56:16,081 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-25 01:56:16,081 INFO L276 IsEmpty]: Start isEmpty. Operand 8389 states and 12579 transitions. [2018-10-25 01:56:16,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2018-10-25 01:56:16,087 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:56:16,088 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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] [2018-10-25 01:56:16,088 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:56:16,088 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:56:16,088 INFO L82 PathProgramCache]: Analyzing trace with hash 1511832028, now seen corresponding path program 1 times [2018-10-25 01:56:16,089 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:56:16,089 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:56:16,090 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:56:16,090 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:56:16,090 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:56:16,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:56:16,384 WARN L179 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-25 01:56:16,481 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 95 proven. 5 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2018-10-25 01:56:16,481 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:56:16,481 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:56:16,482 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 209 with the following transitions: [2018-10-25 01:56:16,487 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1022], [1030], [1038], [1042], [1044], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1223], [1224], [1228], [1232], [1236], [1239], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-25 01:56:16,535 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:56:16,535 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 01:56:18,314 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 01:56:18,316 INFO L272 AbstractInterpreter]: Visited 88 different actions 250 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-10-25 01:56:18,328 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:56:18,330 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 01:56:18,330 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:56:18,330 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-25 01:56:18,481 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:56:18,481 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 01:56:18,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:56:18,595 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 01:56:19,034 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 167 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:56:19,035 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 01:56:19,291 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-10-25 01:56:19,973 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 167 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:56:19,995 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-25 01:56:19,996 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2018-10-25 01:56:19,996 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-25 01:56:19,996 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-25 01:56:19,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-25 01:56:19,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-10-25 01:56:19,997 INFO L87 Difference]: Start difference. First operand 8389 states and 12579 transitions. Second operand 9 states. [2018-10-25 01:56:29,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:56:29,108 INFO L93 Difference]: Finished difference Result 20872 states and 31685 transitions. [2018-10-25 01:56:29,109 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-25 01:56:29,109 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 208 [2018-10-25 01:56:29,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:56:29,220 INFO L225 Difference]: With dead ends: 20872 [2018-10-25 01:56:29,221 INFO L226 Difference]: Without dead ends: 12454 [2018-10-25 01:56:29,284 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 433 GetRequests, 414 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2018-10-25 01:56:29,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12454 states. [2018-10-25 01:56:29,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12454 to 12429. [2018-10-25 01:56:29,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12429 states. [2018-10-25 01:56:29,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12429 states to 12429 states and 15969 transitions. [2018-10-25 01:56:29,967 INFO L78 Accepts]: Start accepts. Automaton has 12429 states and 15969 transitions. Word has length 208 [2018-10-25 01:56:29,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:56:29,968 INFO L481 AbstractCegarLoop]: Abstraction has 12429 states and 15969 transitions. [2018-10-25 01:56:29,968 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-25 01:56:29,968 INFO L276 IsEmpty]: Start isEmpty. Operand 12429 states and 15969 transitions. [2018-10-25 01:56:29,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2018-10-25 01:56:29,977 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:56:29,978 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 01:56:29,978 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:56:29,979 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:56:29,979 INFO L82 PathProgramCache]: Analyzing trace with hash -1311071484, now seen corresponding path program 1 times [2018-10-25 01:56:29,979 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:56:29,980 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:56:29,980 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:56:29,981 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:56:29,981 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:56:30,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:56:30,385 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2018-10-25 01:56:30,386 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 01:56:30,386 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-25 01:56:30,386 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:56:30,387 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-25 01:56:30,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-25 01:56:30,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-25 01:56:30,388 INFO L87 Difference]: Start difference. First operand 12429 states and 15969 transitions. Second operand 4 states. [2018-10-25 01:56:39,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:56:39,542 INFO L93 Difference]: Finished difference Result 32371 states and 44081 transitions. [2018-10-25 01:56:39,543 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-25 01:56:39,543 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 221 [2018-10-25 01:56:39,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:56:39,616 INFO L225 Difference]: With dead ends: 32371 [2018-10-25 01:56:39,617 INFO L226 Difference]: Without dead ends: 15842 [2018-10-25 01:56:39,705 INFO L605 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 [2018-10-25 01:56:39,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15842 states. [2018-10-25 01:56:40,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15842 to 13158. [2018-10-25 01:56:40,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13158 states. [2018-10-25 01:56:40,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13158 states to 13158 states and 15796 transitions. [2018-10-25 01:56:40,048 INFO L78 Accepts]: Start accepts. Automaton has 13158 states and 15796 transitions. Word has length 221 [2018-10-25 01:56:40,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:56:40,049 INFO L481 AbstractCegarLoop]: Abstraction has 13158 states and 15796 transitions. [2018-10-25 01:56:40,049 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-25 01:56:40,049 INFO L276 IsEmpty]: Start isEmpty. Operand 13158 states and 15796 transitions. [2018-10-25 01:56:40,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2018-10-25 01:56:40,060 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:56:40,061 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-25 01:56:40,061 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:56:40,061 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:56:40,061 INFO L82 PathProgramCache]: Analyzing trace with hash -1606849281, now seen corresponding path program 1 times [2018-10-25 01:56:40,062 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:56:40,062 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:56:40,062 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:56:40,063 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:56:40,063 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:56:40,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:56:40,694 WARN L179 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-10-25 01:56:41,544 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 95 proven. 59 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2018-10-25 01:56:41,544 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:56:41,544 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:56:41,544 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 285 with the following transitions: [2018-10-25 01:56:41,545 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1022], [1030], [1038], [1042], [1044], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1479], [1490], [1501], [1505], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1547], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-25 01:56:41,552 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:56:41,552 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 01:56:42,242 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 01:56:42,242 INFO L272 AbstractInterpreter]: Visited 151 different actions 301 times. Merged at 7 different actions 11 times. Never widened. Found 2 fixpoints after 2 different actions. Largest state had 26 variables. [2018-10-25 01:56:42,278 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:56:42,278 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 01:56:42,278 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:56:42,278 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-25 01:56:42,300 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:56:42,300 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 01:56:42,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:56:42,416 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 01:56:44,888 WARN L179 SmtUtils]: Spent 2.09 s on a formula simplification. DAG size of input: 42 DAG size of output: 17 [2018-10-25 01:56:45,115 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 99 proven. 2 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2018-10-25 01:56:45,115 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 01:56:46,086 WARN L179 SmtUtils]: Spent 355.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 24 [2018-10-25 01:56:46,729 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 99 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:56:46,760 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-25 01:56:46,760 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 18 [2018-10-25 01:56:46,761 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-25 01:56:46,761 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-25 01:56:46,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-25 01:56:46,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2018-10-25 01:56:46,762 INFO L87 Difference]: Start difference. First operand 13158 states and 15796 transitions. Second operand 13 states. [2018-10-25 01:57:53,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:57:53,261 INFO L93 Difference]: Finished difference Result 89509 states and 113249 transitions. [2018-10-25 01:57:53,262 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2018-10-25 01:57:53,262 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 284 [2018-10-25 01:57:53,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:57:53,585 INFO L225 Difference]: With dead ends: 89509 [2018-10-25 01:57:53,585 INFO L226 Difference]: Without dead ends: 65025 [2018-10-25 01:57:53,707 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 696 GetRequests, 561 SyntacticMatches, 2 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6754 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=2610, Invalid=15480, Unknown=0, NotChecked=0, Total=18090 [2018-10-25 01:57:53,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65025 states. [2018-10-25 01:57:55,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65025 to 59048. [2018-10-25 01:57:55,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59048 states. [2018-10-25 01:57:55,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59048 states to 59048 states and 69227 transitions. [2018-10-25 01:57:55,493 INFO L78 Accepts]: Start accepts. Automaton has 59048 states and 69227 transitions. Word has length 284 [2018-10-25 01:57:55,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:57:55,494 INFO L481 AbstractCegarLoop]: Abstraction has 59048 states and 69227 transitions. [2018-10-25 01:57:55,494 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-25 01:57:55,494 INFO L276 IsEmpty]: Start isEmpty. Operand 59048 states and 69227 transitions. [2018-10-25 01:57:55,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2018-10-25 01:57:55,518 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:57:55,518 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 01:57:55,519 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:57:55,519 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:57:55,519 INFO L82 PathProgramCache]: Analyzing trace with hash 1354231450, now seen corresponding path program 1 times [2018-10-25 01:57:55,519 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:57:55,520 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:57:55,520 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:57:55,520 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:57:55,521 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:57:55,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:57:56,433 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 145 proven. 17 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2018-10-25 01:57:56,433 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:57:56,434 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:57:56,434 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 395 with the following transitions: [2018-10-25 01:57:56,435 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1022], [1030], [1038], [1042], [1044], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1384], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1479], [1490], [1501], [1505], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1547], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-25 01:57:56,441 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:57:56,441 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 01:57:57,169 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 01:57:57,169 INFO L272 AbstractInterpreter]: Visited 152 different actions 305 times. Merged at 8 different actions 13 times. Never widened. Found 3 fixpoints after 3 different actions. Largest state had 26 variables. [2018-10-25 01:57:57,197 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:57:57,197 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 01:57:57,197 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:57:57,197 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-25 01:57:57,210 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:57:57,210 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 01:57:57,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:57:57,347 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 01:57:58,106 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 377 proven. 2 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2018-10-25 01:57:58,106 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 01:57:58,771 WARN L179 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2018-10-25 01:57:58,908 WARN L179 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2018-10-25 01:57:59,339 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:58:00,529 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 147 proven. 275 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-25 01:58:00,550 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-25 01:58:00,550 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 20 [2018-10-25 01:58:00,550 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-25 01:58:00,551 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-25 01:58:00,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-25 01:58:00,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2018-10-25 01:58:00,552 INFO L87 Difference]: Start difference. First operand 59048 states and 69227 transitions. Second operand 15 states. [2018-10-25 01:58:37,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:58:37,775 INFO L93 Difference]: Finished difference Result 149096 states and 176650 transitions. [2018-10-25 01:58:37,775 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-10-25 01:58:37,775 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 394 [2018-10-25 01:58:37,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:58:38,043 INFO L225 Difference]: With dead ends: 149096 [2018-10-25 01:58:38,043 INFO L226 Difference]: Without dead ends: 83080 [2018-10-25 01:58:38,194 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 847 GetRequests, 780 SyntacticMatches, 2 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1193 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=904, Invalid=3518, Unknown=0, NotChecked=0, Total=4422 [2018-10-25 01:58:38,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83080 states. [2018-10-25 01:58:39,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83080 to 80717. [2018-10-25 01:58:39,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80717 states. [2018-10-25 01:58:39,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80717 states to 80717 states and 93137 transitions. [2018-10-25 01:58:39,722 INFO L78 Accepts]: Start accepts. Automaton has 80717 states and 93137 transitions. Word has length 394 [2018-10-25 01:58:39,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:58:39,723 INFO L481 AbstractCegarLoop]: Abstraction has 80717 states and 93137 transitions. [2018-10-25 01:58:39,723 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-10-25 01:58:39,723 INFO L276 IsEmpty]: Start isEmpty. Operand 80717 states and 93137 transitions. [2018-10-25 01:58:39,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 456 [2018-10-25 01:58:39,745 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:58:39,746 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 01:58:39,746 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:58:39,746 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:58:39,747 INFO L82 PathProgramCache]: Analyzing trace with hash 863350675, now seen corresponding path program 1 times [2018-10-25 01:58:39,747 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:58:39,748 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:58:39,748 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:58:39,748 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:58:39,748 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:58:39,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:58:40,359 INFO L134 CoverageAnalysis]: Checked inductivity of 470 backedges. 147 proven. 0 refuted. 0 times theorem prover too weak. 323 trivial. 0 not checked. [2018-10-25 01:58:40,360 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 01:58:40,360 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-25 01:58:40,360 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:58:40,361 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-25 01:58:40,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-25 01:58:40,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-25 01:58:40,362 INFO L87 Difference]: Start difference. First operand 80717 states and 93137 transitions. Second operand 4 states. [2018-10-25 01:58:45,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:58:45,942 INFO L93 Difference]: Finished difference Result 169907 states and 199109 transitions. [2018-10-25 01:58:45,942 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-25 01:58:45,942 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 455 [2018-10-25 01:58:45,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:58:46,218 INFO L225 Difference]: With dead ends: 169907 [2018-10-25 01:58:46,219 INFO L226 Difference]: Without dead ends: 97202 [2018-10-25 01:58:46,349 INFO L605 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 [2018-10-25 01:58:46,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97202 states. [2018-10-25 01:58:47,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97202 to 95892. [2018-10-25 01:58:47,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95892 states. [2018-10-25 01:58:47,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95892 states to 95892 states and 108621 transitions. [2018-10-25 01:58:47,752 INFO L78 Accepts]: Start accepts. Automaton has 95892 states and 108621 transitions. Word has length 455 [2018-10-25 01:58:47,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:58:47,752 INFO L481 AbstractCegarLoop]: Abstraction has 95892 states and 108621 transitions. [2018-10-25 01:58:47,753 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-25 01:58:47,753 INFO L276 IsEmpty]: Start isEmpty. Operand 95892 states and 108621 transitions. [2018-10-25 01:58:47,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 543 [2018-10-25 01:58:47,790 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:58:47,791 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 01:58:47,791 INFO L424 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:58:47,791 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:58:47,791 INFO L82 PathProgramCache]: Analyzing trace with hash 911489126, now seen corresponding path program 1 times [2018-10-25 01:58:47,791 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:58:47,792 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:58:47,792 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:58:47,792 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:58:47,793 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:58:47,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:58:48,496 WARN L179 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-10-25 01:58:49,348 INFO L134 CoverageAnalysis]: Checked inductivity of 731 backedges. 453 proven. 121 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2018-10-25 01:58:49,348 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:58:49,348 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:58:49,348 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 543 with the following transitions: [2018-10-25 01:58:49,349 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1022], [1030], [1038], [1042], [1044], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1239], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1478], [1479], [1490], [1501], [1505], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1559], [1563], [1567], [1578], [1582], [1593], [1597], [1601], [1612], [1623], [1627], [1631], [1635], [1639], [1643], [1647], [1651], [1655], [1659], [1663], [1667], [1678], [1689], [1693], [1697], [1701], [1705], [1709], [1713], [1717], [1728], [1732], [1736], [1747], [1751], [1755], [1759], [1763], [1767], [1771], [1775], [1779], [1783], [1787], [1791], [1795], [1799], [1803], [1806], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-25 01:58:49,372 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:58:49,372 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 01:58:51,609 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 01:58:51,610 INFO L272 AbstractInterpreter]: Visited 202 different actions 616 times. Merged at 9 different actions 33 times. Widened at 1 different actions 1 times. Found 7 fixpoints after 2 different actions. Largest state had 26 variables. [2018-10-25 01:58:51,649 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:58:51,650 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 01:58:51,650 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:58:51,650 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-25 01:58:51,661 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:58:51,662 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 01:58:51,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:58:51,832 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 01:58:52,017 INFO L134 CoverageAnalysis]: Checked inductivity of 731 backedges. 197 proven. 0 refuted. 0 times theorem prover too weak. 534 trivial. 0 not checked. [2018-10-25 01:58:52,018 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 01:58:52,280 INFO L134 CoverageAnalysis]: Checked inductivity of 731 backedges. 197 proven. 0 refuted. 0 times theorem prover too weak. 534 trivial. 0 not checked. [2018-10-25 01:58:52,302 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-10-25 01:58:52,302 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8] total 9 [2018-10-25 01:58:52,302 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:58:52,303 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-25 01:58:52,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-25 01:58:52,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2018-10-25 01:58:52,303 INFO L87 Difference]: Start difference. First operand 95892 states and 108621 transitions. Second operand 3 states. [2018-10-25 01:58:56,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:58:56,489 INFO L93 Difference]: Finished difference Result 171858 states and 196200 transitions. [2018-10-25 01:58:56,490 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-25 01:58:56,490 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 542 [2018-10-25 01:58:56,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:58:56,753 INFO L225 Difference]: With dead ends: 171858 [2018-10-25 01:58:56,753 INFO L226 Difference]: Without dead ends: 89137 [2018-10-25 01:58:56,873 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1094 GetRequests, 1085 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2018-10-25 01:58:56,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89137 states. [2018-10-25 01:58:58,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89137 to 86596. [2018-10-25 01:58:58,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86596 states. [2018-10-25 01:58:58,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86596 states to 86596 states and 98412 transitions. [2018-10-25 01:58:58,809 INFO L78 Accepts]: Start accepts. Automaton has 86596 states and 98412 transitions. Word has length 542 [2018-10-25 01:58:58,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:58:58,811 INFO L481 AbstractCegarLoop]: Abstraction has 86596 states and 98412 transitions. [2018-10-25 01:58:58,811 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-25 01:58:58,811 INFO L276 IsEmpty]: Start isEmpty. Operand 86596 states and 98412 transitions. [2018-10-25 01:58:58,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 620 [2018-10-25 01:58:58,861 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:58:58,862 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 01:58:58,862 INFO L424 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:58:58,863 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:58:58,863 INFO L82 PathProgramCache]: Analyzing trace with hash 357807604, now seen corresponding path program 1 times [2018-10-25 01:58:58,863 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:58:58,864 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:58:58,864 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:58:58,864 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:58:58,864 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:58:58,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:58:59,486 INFO L134 CoverageAnalysis]: Checked inductivity of 1086 backedges. 770 proven. 6 refuted. 0 times theorem prover too weak. 310 trivial. 0 not checked. [2018-10-25 01:58:59,487 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:58:59,487 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:58:59,487 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 620 with the following transitions: [2018-10-25 01:58:59,487 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1022], [1030], [1038], [1042], [1044], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1231], [1232], [1236], [1239], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1478], [1479], [1490], [1501], [1505], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1559], [1563], [1567], [1578], [1582], [1593], [1597], [1601], [1612], [1623], [1627], [1631], [1635], [1639], [1643], [1647], [1651], [1655], [1659], [1663], [1667], [1678], [1689], [1693], [1697], [1701], [1705], [1709], [1713], [1717], [1728], [1732], [1736], [1747], [1751], [1755], [1759], [1763], [1767], [1771], [1775], [1779], [1783], [1787], [1791], [1795], [1799], [1803], [1806], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-25 01:58:59,492 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:58:59,492 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 01:59:01,088 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 01:59:01,088 INFO L272 AbstractInterpreter]: Visited 203 different actions 623 times. Merged at 10 different actions 37 times. Widened at 1 different actions 1 times. Found 9 fixpoints after 4 different actions. Largest state had 26 variables. [2018-10-25 01:59:01,124 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:59:01,125 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 01:59:01,125 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:59:01,125 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-25 01:59:01,136 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:59:01,136 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 01:59:01,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:59:01,335 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 01:59:02,201 INFO L134 CoverageAnalysis]: Checked inductivity of 1086 backedges. 770 proven. 6 refuted. 0 times theorem prover too weak. 310 trivial. 0 not checked. [2018-10-25 01:59:02,201 INFO L316 TraceCheckSpWp]: Computing backward predicates... Received shutdown request... [2018-10-25 01:59:02,674 INFO L134 CoverageAnalysis]: Checked inductivity of 1086 backedges. 770 proven. 76 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2018-10-25 01:59:02,696 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-25 01:59:02,696 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 8] total 13 [2018-10-25 01:59:02,696 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-25 01:59:02,697 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-25 01:59:02,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-25 01:59:02,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2018-10-25 01:59:02,698 INFO L87 Difference]: Start difference. First operand 86596 states and 98412 transitions. Second operand 8 states. [2018-10-25 01:59:02,698 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-25 01:59:02,699 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-25 01:59:02,705 WARN L205 ceAbstractionStarter]: Timeout [2018-10-25 01:59:02,705 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 01:59:02 BoogieIcfgContainer [2018-10-25 01:59:02,705 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-25 01:59:02,706 INFO L168 Benchmark]: Toolchain (without parser) took 230135.02 ms. Allocated memory was 1.5 GB in the beginning and 3.8 GB in the end (delta: 2.3 GB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -686.8 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. [2018-10-25 01:59:02,707 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-25 01:59:02,707 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1623.49 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 140.0 MB). Peak memory consumption was 140.0 MB. Max. memory is 7.1 GB. [2018-10-25 01:59:02,708 INFO L168 Benchmark]: Boogie Procedure Inliner took 482.13 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 778.0 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -930.7 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. [2018-10-25 01:59:02,709 INFO L168 Benchmark]: Boogie Preprocessor took 215.73 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 27.9 MB). Peak memory consumption was 27.9 MB. Max. memory is 7.1 GB. [2018-10-25 01:59:02,710 INFO L168 Benchmark]: RCFGBuilder took 14108.97 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 475.8 MB). Peak memory consumption was 475.8 MB. Max. memory is 7.1 GB. [2018-10-25 01:59:02,711 INFO L168 Benchmark]: TraceAbstraction took 213698.29 ms. Allocated memory was 2.3 GB in the beginning and 3.8 GB in the end (delta: 1.5 GB). Free memory was 1.7 GB in the beginning and 2.1 GB in the end (delta: -399.9 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-10-25 01:59:02,716 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1623.49 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 140.0 MB). Peak memory consumption was 140.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 482.13 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 778.0 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -930.7 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 215.73 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 27.9 MB). Peak memory consumption was 27.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 14108.97 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 475.8 MB). Peak memory consumption was 475.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 213698.29 ms. Allocated memory was 2.3 GB in the beginning and 3.8 GB in the end (delta: 1.5 GB). Free memory was 1.7 GB in the beginning and 2.1 GB in the end (delta: -399.9 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 149]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 149). Cancelled while BasicCegarLoop was constructing difference of abstraction (86596states) and FLOYD_HOARE automaton (currently 2 states, 8 states before enhancement),while ReachableStatesComputation was computing reachable states (1 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 604 locations, 1 error locations. TIMEOUT Result, 213.6s OverallTime, 10 OverallIterations, 6 TraceHistogramMax, 178.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2748 SDtfs, 34649 SDslu, 4086 SDs, 0 SdLazy, 61243 SolverSat, 10417 SolverUnsat, 6 SolverUnknown, 0 SolverNotchecked, 151.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4349 GetRequests, 4088 SyntacticMatches, 11 SemanticMatches, 250 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8033 ImplicationChecksByTransitivity, 14.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=95892occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 7.2s AbstIntTime, 5 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 8.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 15038 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 15.7s InterpolantComputationTime, 5091 NumberOfCodeBlocks, 5091 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 7118 ConstructedInterpolants, 196 QuantifiedInterpolants, 10841218 SizeOfPredicates, 8 NumberOfNonLiveVariables, 3244 ConjunctsInSsa, 39 ConjunctsInUnsatCore, 20 InterpolantComputations, 7 PerfectInterpolantSequences, 7866/8522 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown