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/Problem03_label26_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 22:41:29,590 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 22:41:29,592 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 22:41:29,607 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 22:41:29,608 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 22:41:29,609 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 22:41:29,610 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 22:41:29,612 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 22:41:29,614 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 22:41:29,615 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 22:41:29,616 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 22:41:29,616 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 22:41:29,617 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 22:41:29,619 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 22:41:29,620 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 22:41:29,621 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 22:41:29,622 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 22:41:29,624 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 22:41:29,626 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 22:41:29,627 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 22:41:29,629 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 22:41:29,630 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 22:41:29,633 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 22:41:29,633 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 22:41:29,634 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 22:41:29,635 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 22:41:29,636 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 22:41:29,637 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 22:41:29,638 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 22:41:29,639 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 22:41:29,639 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 22:41:29,641 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-24 22:41:29,645 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 [2018-10-24 22:41:29,677 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 22:41:29,677 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 22:41:29,679 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 22:41:29,679 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 22:41:29,680 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 22:41:29,680 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 22:41:29,680 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-24 22:41:29,681 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 22:41:29,681 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-24 22:41:29,681 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 22:41:29,681 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 22:41:29,681 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 22:41:29,682 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 22:41:29,682 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 22:41:29,683 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 22:41:29,684 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 22:41:29,684 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 22:41:29,684 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 22:41:29,684 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 22:41:29,685 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 22:41:29,685 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 22:41:29,685 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 22:41:29,685 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 22:41:29,686 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 22:41:29,687 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 22:41:29,687 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 22:41:29,687 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 22:41:29,688 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 22:41:29,688 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 22:41:29,688 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 22:41:29,689 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 22:41:29,689 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 22:41:29,689 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 22:41:29,689 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 22:41:29,689 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 22:41:29,690 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 22:41:29,764 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 22:41:29,778 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 22:41:29,782 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 22:41:29,784 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 22:41:29,784 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 22:41:29,785 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label26_false-unreach-call.c [2018-10-24 22:41:29,855 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/85810cb36/ac0eba00f2e5447b89a2654d333478e4/FLAGf323d2118 [2018-10-24 22:41:30,508 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 22:41:30,509 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label26_false-unreach-call.c [2018-10-24 22:41:30,527 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/85810cb36/ac0eba00f2e5447b89a2654d333478e4/FLAGf323d2118 [2018-10-24 22:41:30,544 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/85810cb36/ac0eba00f2e5447b89a2654d333478e4 [2018-10-24 22:41:30,559 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 22:41:30,561 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 22:41:30,564 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 22:41:30,564 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 22:41:30,569 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 22:41:30,570 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:41:30" (1/1) ... [2018-10-24 22:41:30,574 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43be0e81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:41:30, skipping insertion in model container [2018-10-24 22:41:30,575 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:41:30" (1/1) ... [2018-10-24 22:41:30,585 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 22:41:30,704 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 22:41:31,464 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 22:41:31,470 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 22:41:31,715 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 22:41:31,740 INFO L193 MainTranslator]: Completed translation [2018-10-24 22:41:31,741 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:41:31 WrapperNode [2018-10-24 22:41:31,741 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 22:41:31,742 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 22:41:31,742 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 22:41:31,743 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 22:41:31,754 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:41:31" (1/1) ... [2018-10-24 22:41:31,805 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:41:31" (1/1) ... [2018-10-24 22:41:32,072 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 22:41:32,072 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 22:41:32,073 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 22:41:32,073 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 22:41:32,085 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:41:31" (1/1) ... [2018-10-24 22:41:32,085 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:41:31" (1/1) ... [2018-10-24 22:41:32,094 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:41:31" (1/1) ... [2018-10-24 22:41:32,095 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:41:31" (1/1) ... [2018-10-24 22:41:32,147 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:41:31" (1/1) ... [2018-10-24 22:41:32,180 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:41:31" (1/1) ... [2018-10-24 22:41:32,200 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:41:31" (1/1) ... [2018-10-24 22:41:32,215 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 22:41:32,216 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 22:41:32,216 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 22:41:32,216 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 22:41:32,217 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:41:31" (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 [2018-10-24 22:41:32,283 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 22:41:32,284 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 22:41:32,284 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 22:41:32,284 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 22:41:32,284 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 22:41:32,284 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 22:41:32,285 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 22:41:32,285 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 22:41:37,693 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 22:41:37,694 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:41:37 BoogieIcfgContainer [2018-10-24 22:41:37,694 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 22:41:37,695 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 22:41:37,696 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 22:41:37,699 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 22:41:37,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 10:41:30" (1/3) ... [2018-10-24 22:41:37,704 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@437b3318 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:41:37, skipping insertion in model container [2018-10-24 22:41:37,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:41:31" (2/3) ... [2018-10-24 22:41:37,706 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@437b3318 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:41:37, skipping insertion in model container [2018-10-24 22:41:37,706 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:41:37" (3/3) ... [2018-10-24 22:41:37,708 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label26_false-unreach-call.c [2018-10-24 22:41:37,719 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 22:41:37,733 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 22:41:37,752 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 22:41:37,792 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 22:41:37,792 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 22:41:37,793 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 22:41:37,793 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 22:41:37,793 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 22:41:37,793 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 22:41:37,793 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 22:41:37,793 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 22:41:37,824 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2018-10-24 22:41:37,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2018-10-24 22:41:37,843 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:41:37,844 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 22:41:37,846 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:41:37,853 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:41:37,853 INFO L82 PathProgramCache]: Analyzing trace with hash 813355628, now seen corresponding path program 1 times [2018-10-24 22:41:37,856 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:41:37,909 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:41:37,909 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:41:37,909 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:41:37,910 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:41:38,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:41:38,799 WARN L179 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-10-24 22:41:39,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:41:39,174 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:41:39,174 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 22:41:39,174 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:41:39,181 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 22:41:39,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 22:41:39,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 22:41:39,199 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 4 states. [2018-10-24 22:41:42,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:41:42,525 INFO L93 Difference]: Finished difference Result 1058 states and 1911 transitions. [2018-10-24 22:41:42,526 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 22:41:42,527 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 163 [2018-10-24 22:41:42,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:41:42,553 INFO L225 Difference]: With dead ends: 1058 [2018-10-24 22:41:42,554 INFO L226 Difference]: Without dead ends: 740 [2018-10-24 22:41:42,562 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 22:41:42,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 740 states. [2018-10-24 22:41:42,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 740 to 525. [2018-10-24 22:41:42,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 525 states. [2018-10-24 22:41:42,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 877 transitions. [2018-10-24 22:41:42,669 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 877 transitions. Word has length 163 [2018-10-24 22:41:42,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:41:42,670 INFO L481 AbstractCegarLoop]: Abstraction has 525 states and 877 transitions. [2018-10-24 22:41:42,670 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 22:41:42,671 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 877 transitions. [2018-10-24 22:41:42,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-10-24 22:41:42,678 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:41:42,678 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 22:41:42,679 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:41:42,679 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:41:42,679 INFO L82 PathProgramCache]: Analyzing trace with hash -1235682712, now seen corresponding path program 1 times [2018-10-24 22:41:42,680 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:41:42,681 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:41:42,681 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:41:42,681 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:41:42,682 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:41:42,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:41:43,056 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:41:43,056 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:41:43,056 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 22:41:43,057 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:41:43,059 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 22:41:43,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 22:41:43,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 22:41:43,061 INFO L87 Difference]: Start difference. First operand 525 states and 877 transitions. Second operand 3 states. [2018-10-24 22:41:44,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:41:44,964 INFO L93 Difference]: Finished difference Result 1482 states and 2552 transitions. [2018-10-24 22:41:44,964 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 22:41:44,964 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 176 [2018-10-24 22:41:44,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:41:44,974 INFO L225 Difference]: With dead ends: 1482 [2018-10-24 22:41:44,974 INFO L226 Difference]: Without dead ends: 963 [2018-10-24 22:41:44,981 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 22:41:44,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963 states. [2018-10-24 22:41:45,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 948. [2018-10-24 22:41:45,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 948 states. [2018-10-24 22:41:45,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 948 states to 948 states and 1560 transitions. [2018-10-24 22:41:45,034 INFO L78 Accepts]: Start accepts. Automaton has 948 states and 1560 transitions. Word has length 176 [2018-10-24 22:41:45,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:41:45,035 INFO L481 AbstractCegarLoop]: Abstraction has 948 states and 1560 transitions. [2018-10-24 22:41:45,035 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 22:41:45,035 INFO L276 IsEmpty]: Start isEmpty. Operand 948 states and 1560 transitions. [2018-10-24 22:41:45,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2018-10-24 22:41:45,042 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:41:45,042 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 22:41:45,042 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:41:45,043 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:41:45,043 INFO L82 PathProgramCache]: Analyzing trace with hash 1234531637, now seen corresponding path program 1 times [2018-10-24 22:41:45,043 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:41:45,044 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:41:45,044 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:41:45,045 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:41:45,045 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:41:45,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:41:45,275 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:41:45,276 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:41:45,276 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 22:41:45,276 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:41:45,277 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 22:41:45,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 22:41:45,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 22:41:45,278 INFO L87 Difference]: Start difference. First operand 948 states and 1560 transitions. Second operand 6 states. [2018-10-24 22:41:49,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:41:49,184 INFO L93 Difference]: Finished difference Result 2887 states and 4998 transitions. [2018-10-24 22:41:49,187 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-24 22:41:49,188 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 181 [2018-10-24 22:41:49,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:41:49,216 INFO L225 Difference]: With dead ends: 2887 [2018-10-24 22:41:49,217 INFO L226 Difference]: Without dead ends: 1945 [2018-10-24 22:41:49,222 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 22:41:49,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1945 states. [2018-10-24 22:41:49,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1945 to 1877. [2018-10-24 22:41:49,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1877 states. [2018-10-24 22:41:49,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1877 states to 1877 states and 3110 transitions. [2018-10-24 22:41:49,340 INFO L78 Accepts]: Start accepts. Automaton has 1877 states and 3110 transitions. Word has length 181 [2018-10-24 22:41:49,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:41:49,341 INFO L481 AbstractCegarLoop]: Abstraction has 1877 states and 3110 transitions. [2018-10-24 22:41:49,341 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 22:41:49,341 INFO L276 IsEmpty]: Start isEmpty. Operand 1877 states and 3110 transitions. [2018-10-24 22:41:49,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2018-10-24 22:41:49,350 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:41:49,350 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 22:41:49,350 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:41:49,351 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:41:49,351 INFO L82 PathProgramCache]: Analyzing trace with hash -1131407823, now seen corresponding path program 1 times [2018-10-24 22:41:49,351 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:41:49,353 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:41:49,353 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:41:49,354 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:41:49,354 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:41:49,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:41:49,687 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 36 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:41:49,687 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:41:49,687 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 22:41:49,688 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 195 with the following transitions: [2018-10-24 22:41:49,691 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [28], [29], [33], [37], [41], [45], [48], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [765], [767], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-24 22:41:49,753 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-24 22:41:49,754 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 22:41:51,011 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 22:41:51,013 INFO L272 AbstractInterpreter]: Visited 164 different actions 164 times. Never merged. Never widened. Never found a fixpoint. Largest state had 88 variables. [2018-10-24 22:41:51,063 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:41:51,064 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 22:41:52,128 INFO L232 lantSequenceWeakener]: Weakened 185 states. On average, predicates are now at 70.98% of their original sizes. [2018-10-24 22:41:52,128 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 22:41:52,478 INFO L413 sIntCurrentIteration]: We have 193 unified AI predicates [2018-10-24 22:41:52,478 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 22:41:52,479 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 22:41:52,479 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [6] total 17 [2018-10-24 22:41:52,480 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:41:52,480 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-24 22:41:52,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-24 22:41:52,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2018-10-24 22:41:52,481 INFO L87 Difference]: Start difference. First operand 1877 states and 3110 transitions. Second operand 13 states. [2018-10-24 22:42:53,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:42:53,451 INFO L93 Difference]: Finished difference Result 3958 states and 6565 transitions. [2018-10-24 22:42:53,451 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-24 22:42:53,451 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 194 [2018-10-24 22:42:53,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:42:53,463 INFO L225 Difference]: With dead ends: 3958 [2018-10-24 22:42:53,463 INFO L226 Difference]: Without dead ends: 2087 [2018-10-24 22:42:53,470 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 194 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2018-10-24 22:42:53,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2087 states. [2018-10-24 22:42:53,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2087 to 2085. [2018-10-24 22:42:53,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2085 states. [2018-10-24 22:42:53,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2085 states to 2085 states and 3328 transitions. [2018-10-24 22:42:53,530 INFO L78 Accepts]: Start accepts. Automaton has 2085 states and 3328 transitions. Word has length 194 [2018-10-24 22:42:53,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:42:53,531 INFO L481 AbstractCegarLoop]: Abstraction has 2085 states and 3328 transitions. [2018-10-24 22:42:53,531 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-24 22:42:53,531 INFO L276 IsEmpty]: Start isEmpty. Operand 2085 states and 3328 transitions. [2018-10-24 22:42:53,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2018-10-24 22:42:53,539 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:42:53,539 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 22:42:53,540 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:42:53,540 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:42:53,540 INFO L82 PathProgramCache]: Analyzing trace with hash -1889225338, now seen corresponding path program 1 times [2018-10-24 22:42:53,540 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:42:53,541 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:42:53,542 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:42:53,542 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:42:53,542 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:42:53,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:42:53,890 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 50 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:42:53,891 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:42:53,891 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 22:42:53,891 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 204 with the following transitions: [2018-10-24 22:42:53,892 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [45], [48], [49], [53], [57], [61], [64], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [765], [767], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-24 22:42:53,907 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-24 22:42:53,908 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 22:42:55,836 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 22:42:55,836 INFO L272 AbstractInterpreter]: Visited 167 different actions 327 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-10-24 22:42:55,846 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:42:55,846 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 22:42:58,815 INFO L232 lantSequenceWeakener]: Weakened 2 states. On average, predicates are now at 81.4% of their original sizes. [2018-10-24 22:42:58,815 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 22:43:05,074 INFO L413 sIntCurrentIteration]: We have 202 unified AI predicates [2018-10-24 22:43:05,074 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 22:43:05,074 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 22:43:05,075 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [6] total 17 [2018-10-24 22:43:05,075 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:43:05,075 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-24 22:43:05,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-24 22:43:05,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2018-10-24 22:43:05,077 INFO L87 Difference]: Start difference. First operand 2085 states and 3328 transitions. Second operand 13 states. [2018-10-24 22:44:18,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:44:18,896 INFO L93 Difference]: Finished difference Result 6185 states and 10289 transitions. [2018-10-24 22:44:18,896 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-24 22:44:18,896 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 203 [2018-10-24 22:44:18,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:44:18,919 INFO L225 Difference]: With dead ends: 6185 [2018-10-24 22:44:18,920 INFO L226 Difference]: Without dead ends: 4314 [2018-10-24 22:44:18,930 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 207 GetRequests, 92 SyntacticMatches, 99 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 517 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2018-10-24 22:44:18,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4314 states. [2018-10-24 22:44:19,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4314 to 4297. [2018-10-24 22:44:19,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4297 states. [2018-10-24 22:44:19,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4297 states to 4297 states and 6629 transitions. [2018-10-24 22:44:19,058 INFO L78 Accepts]: Start accepts. Automaton has 4297 states and 6629 transitions. Word has length 203 [2018-10-24 22:44:19,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:44:19,059 INFO L481 AbstractCegarLoop]: Abstraction has 4297 states and 6629 transitions. [2018-10-24 22:44:19,060 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-24 22:44:19,060 INFO L276 IsEmpty]: Start isEmpty. Operand 4297 states and 6629 transitions. [2018-10-24 22:44:19,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2018-10-24 22:44:19,075 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:44:19,075 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 22:44:19,076 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:44:19,076 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:44:19,076 INFO L82 PathProgramCache]: Analyzing trace with hash 905166765, now seen corresponding path program 1 times [2018-10-24 22:44:19,077 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:44:19,077 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:44:19,078 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:44:19,078 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:44:19,078 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:44:19,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:44:19,361 WARN L179 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 22:44:19,709 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 72 proven. 9 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2018-10-24 22:44:19,710 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:44:19,710 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 22:44:19,710 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 217 with the following transitions: [2018-10-24 22:44:19,715 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [16], [17], [21], [24], [25], [28], [29], [33], [37], [41], [45], [48], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [765], [767], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-24 22:44:19,727 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-24 22:44:19,727 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 22:44:24,741 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 22:44:24,742 INFO L272 AbstractInterpreter]: Visited 170 different actions 505 times. Merged at 7 different actions 19 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 88 variables. [2018-10-24 22:44:24,750 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:44:24,751 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 22:44:24,751 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:44:24,751 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 [2018-10-24 22:44:24,760 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:44:24,760 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 22:44:24,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:44:24,994 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 22:44:25,454 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 62 proven. 4 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2018-10-24 22:44:25,454 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 22:44:25,686 WARN L179 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-10-24 22:44:26,464 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 57 proven. 20 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2018-10-24 22:44:26,500 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-24 22:44:26,501 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2018-10-24 22:44:26,501 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-24 22:44:26,502 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-24 22:44:26,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-24 22:44:26,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2018-10-24 22:44:26,503 INFO L87 Difference]: Start difference. First operand 4297 states and 6629 transitions. Second operand 9 states. [2018-10-24 22:44:31,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:44:31,818 INFO L93 Difference]: Finished difference Result 18282 states and 33982 transitions. [2018-10-24 22:44:31,820 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-10-24 22:44:31,820 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 216 [2018-10-24 22:44:31,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:44:31,944 INFO L225 Difference]: With dead ends: 18282 [2018-10-24 22:44:31,945 INFO L226 Difference]: Without dead ends: 14412 [2018-10-24 22:44:31,972 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 475 GetRequests, 441 SyntacticMatches, 7 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=195, Invalid=617, Unknown=0, NotChecked=0, Total=812 [2018-10-24 22:44:31,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14412 states. [2018-10-24 22:44:32,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14412 to 13999. [2018-10-24 22:44:32,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13999 states. [2018-10-24 22:44:32,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13999 states to 13999 states and 21347 transitions. [2018-10-24 22:44:32,508 INFO L78 Accepts]: Start accepts. Automaton has 13999 states and 21347 transitions. Word has length 216 [2018-10-24 22:44:32,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:44:32,508 INFO L481 AbstractCegarLoop]: Abstraction has 13999 states and 21347 transitions. [2018-10-24 22:44:32,508 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-24 22:44:32,509 INFO L276 IsEmpty]: Start isEmpty. Operand 13999 states and 21347 transitions. [2018-10-24 22:44:32,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2018-10-24 22:44:32,546 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:44:32,547 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 22:44:32,547 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:44:32,547 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:44:32,548 INFO L82 PathProgramCache]: Analyzing trace with hash -724934452, now seen corresponding path program 1 times [2018-10-24 22:44:32,548 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:44:32,549 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:44:32,549 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:44:32,549 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:44:32,549 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:44:32,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:44:32,817 WARN L179 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 22:44:33,229 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 50 proven. 22 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-10-24 22:44:33,229 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:44:33,229 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 22:44:33,229 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 219 with the following transitions: [2018-10-24 22:44:33,230 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [24], [25], [29], [33], [37], [41], [45], [48], [49], [53], [57], [61], [65], [68], [71], [75], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [765], [767], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-24 22:44:33,237 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-24 22:44:33,237 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 22:44:34,340 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 22:44:34,340 INFO L272 AbstractInterpreter]: Visited 168 different actions 330 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-10-24 22:44:34,347 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:44:34,347 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 22:44:35,675 INFO L232 lantSequenceWeakener]: Weakened 213 states. On average, predicates are now at 70.95% of their original sizes. [2018-10-24 22:44:35,676 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 22:44:36,256 INFO L413 sIntCurrentIteration]: We have 217 unified AI predicates [2018-10-24 22:44:36,256 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 22:44:36,256 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 22:44:36,257 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [20] imperfect sequences [6] total 24 [2018-10-24 22:44:36,257 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:44:36,257 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-24 22:44:36,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-24 22:44:36,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=303, Unknown=0, NotChecked=0, Total=380 [2018-10-24 22:44:36,258 INFO L87 Difference]: Start difference. First operand 13999 states and 21347 transitions. Second operand 20 states. Received shutdown request... [2018-10-24 22:45:35,256 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-24 22:45:35,256 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 22:45:35,261 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 22:45:35,262 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 10:45:35 BoogieIcfgContainer [2018-10-24 22:45:35,262 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 22:45:35,263 INFO L168 Benchmark]: Toolchain (without parser) took 244703.36 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -738.7 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2018-10-24 22:45:35,264 INFO L168 Benchmark]: CDTParser took 0.22 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. [2018-10-24 22:45:35,265 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1178.04 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: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. [2018-10-24 22:45:35,266 INFO L168 Benchmark]: Boogie Procedure Inliner took 330.00 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 744.5 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -866.6 MB). Peak memory consumption was 40.3 MB. Max. memory is 7.1 GB. [2018-10-24 22:45:35,272 INFO L168 Benchmark]: Boogie Preprocessor took 142.79 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: 14.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. [2018-10-24 22:45:35,273 INFO L168 Benchmark]: RCFGBuilder took 5478.87 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 250.2 MB). Peak memory consumption was 250.2 MB. Max. memory is 7.1 GB. [2018-10-24 22:45:35,274 INFO L168 Benchmark]: TraceAbstraction took 237566.65 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 2.2 GB in the end (delta: -220.9 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2018-10-24 22:45:35,280 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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 1178.04 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: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 330.00 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 744.5 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -866.6 MB). Peak memory consumption was 40.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 142.79 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: 14.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 5478.87 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 250.2 MB). Peak memory consumption was 250.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 237566.65 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 2.2 GB in the end (delta: -220.9 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 1503]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 1503). Cancelled while BasicCegarLoop was constructing difference of abstraction (13999states) and FLOYD_HOARE automaton (currently 12 states, 20 states before enhancement),while ReachableStatesComputation was computing reachable states (7936 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 312 locations, 1 error locations. TIMEOUT Result, 237.4s OverallTime, 7 OverallIterations, 5 TraceHistogramMax, 208.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1776 SDtfs, 10522 SDslu, 2101 SDs, 0 SdLazy, 15961 SolverSat, 2122 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 157.9s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 1122 GetRequests, 921 SyntacticMatches, 109 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 865 ImplicationChecksByTransitivity, 10.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13999occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 9.4s AbstIntTime, 4 AbstIntIterations, 3 AbstIntStrong, 0.9988915171145334 AbsIntWeakeningRatio, 0.32189542483660133 AbsIntAvgWeakeningVarsNumRemoved, 19.0718954248366 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.9s AutomataMinimizationTime, 6 MinimizatonAttempts, 730 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 4.4s InterpolantComputationTime, 1567 NumberOfCodeBlocks, 1567 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 1774 ConstructedInterpolants, 0 QuantifiedInterpolants, 748587 SizeOfPredicates, 1 NumberOfNonLiveVariables, 1353 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 9 InterpolantComputations, 3 PerfectInterpolantSequences, 466/525 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown