java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label39_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-63daa26 [2018-11-12 16:18:41,662 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-12 16:18:41,664 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-12 16:18:41,680 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-12 16:18:41,680 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-12 16:18:41,682 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-12 16:18:41,684 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-12 16:18:41,686 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-12 16:18:41,689 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-12 16:18:41,690 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-12 16:18:41,692 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-12 16:18:41,692 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-12 16:18:41,693 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-12 16:18:41,696 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-12 16:18:41,698 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-12 16:18:41,698 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-12 16:18:41,699 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-12 16:18:41,704 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-12 16:18:41,709 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-12 16:18:41,716 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-12 16:18:41,717 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-12 16:18:41,719 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-12 16:18:41,723 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-12 16:18:41,723 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-12 16:18:41,723 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-12 16:18:41,724 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-12 16:18:41,726 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-12 16:18:41,727 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-12 16:18:41,731 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-12 16:18:41,734 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-12 16:18:41,734 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-12 16:18:41,735 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-12 16:18:41,735 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-12 16:18:41,735 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-12 16:18:41,736 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-12 16:18:41,737 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-12 16:18:41,739 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf [2018-11-12 16:18:41,764 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-12 16:18:41,764 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-12 16:18:41,766 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-12 16:18:41,766 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-12 16:18:41,767 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-12 16:18:41,767 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-12 16:18:41,767 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-12 16:18:41,768 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-12 16:18:41,768 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-12 16:18:41,768 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-12 16:18:41,768 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-12 16:18:41,768 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-12 16:18:41,769 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-12 16:18:41,769 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-12 16:18:41,770 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-12 16:18:41,770 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-12 16:18:41,770 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-12 16:18:41,770 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-12 16:18:41,770 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-12 16:18:41,771 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-12 16:18:41,771 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-12 16:18:41,771 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-12 16:18:41,771 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-12 16:18:41,772 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-12 16:18:41,772 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-12 16:18:41,772 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 16:18:41,772 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-12 16:18:41,772 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-12 16:18:41,773 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-12 16:18:41,773 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-12 16:18:41,773 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-12 16:18:41,773 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-12 16:18:41,773 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-12 16:18:41,774 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-12 16:18:41,775 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-12 16:18:41,839 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-12 16:18:41,857 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-12 16:18:41,861 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-12 16:18:41,863 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-12 16:18:41,863 INFO L276 PluginConnector]: CDTParser initialized [2018-11-12 16:18:41,864 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label39_false-unreach-call.c [2018-11-12 16:18:41,932 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d076c950/4e13cf18bd0044da9c1145cce4cae491/FLAG53744b36b [2018-11-12 16:18:42,658 INFO L298 CDTParser]: Found 1 translation units. [2018-11-12 16:18:42,659 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label39_false-unreach-call.c [2018-11-12 16:18:42,694 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d076c950/4e13cf18bd0044da9c1145cce4cae491/FLAG53744b36b [2018-11-12 16:18:42,717 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d076c950/4e13cf18bd0044da9c1145cce4cae491 [2018-11-12 16:18:42,730 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-12 16:18:42,732 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-12 16:18:42,733 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-12 16:18:42,734 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-12 16:18:42,738 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-12 16:18:42,739 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 04:18:42" (1/1) ... [2018-11-12 16:18:42,743 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45f13c4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:18:42, skipping insertion in model container [2018-11-12 16:18:42,744 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 04:18:42" (1/1) ... [2018-11-12 16:18:42,756 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-12 16:18:42,933 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-12 16:18:44,244 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 16:18:44,248 INFO L189 MainTranslator]: Completed pre-run [2018-11-12 16:18:44,957 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 16:18:44,993 INFO L193 MainTranslator]: Completed translation [2018-11-12 16:18:44,993 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:18:44 WrapperNode [2018-11-12 16:18:44,993 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-12 16:18:44,994 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-12 16:18:44,995 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-12 16:18:44,995 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-12 16:18:45,276 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:18:44" (1/1) ... [2018-11-12 16:18:45,344 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:18:44" (1/1) ... [2018-11-12 16:18:45,354 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-12 16:18:45,354 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-12 16:18:45,354 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-12 16:18:45,354 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-12 16:18:45,366 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:18:44" (1/1) ... [2018-11-12 16:18:45,367 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:18:44" (1/1) ... [2018-11-12 16:18:45,385 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:18:44" (1/1) ... [2018-11-12 16:18:45,386 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:18:44" (1/1) ... [2018-11-12 16:18:45,481 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:18:44" (1/1) ... [2018-11-12 16:18:45,520 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:18:44" (1/1) ... [2018-11-12 16:18:45,547 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:18:44" (1/1) ... [2018-11-12 16:18:45,574 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-12 16:18:45,575 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-12 16:18:45,575 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-12 16:18:45,575 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-12 16:18:45,576 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:18:44" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 16:18:45,652 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-12 16:18:45,652 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-12 16:18:45,652 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-12 16:18:45,653 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-12 16:18:45,654 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-12 16:18:45,654 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-12 16:18:45,654 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-12 16:18:45,654 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-12 16:18:45,654 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-12 16:18:45,655 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-12 16:18:45,655 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-12 16:18:45,655 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-12 16:18:45,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-12 16:18:45,656 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-12 16:18:45,656 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-12 16:18:55,297 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-12 16:18:55,298 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 04:18:55 BoogieIcfgContainer [2018-11-12 16:18:55,298 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-12 16:18:55,299 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-12 16:18:55,299 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-12 16:18:55,303 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-12 16:18:55,303 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 04:18:42" (1/3) ... [2018-11-12 16:18:55,304 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e5c311e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 04:18:55, skipping insertion in model container [2018-11-12 16:18:55,304 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:18:44" (2/3) ... [2018-11-12 16:18:55,305 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e5c311e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 04:18:55, skipping insertion in model container [2018-11-12 16:18:55,305 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 04:18:55" (3/3) ... [2018-11-12 16:18:55,307 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label39_false-unreach-call.c [2018-11-12 16:18:55,317 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-12 16:18:55,326 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-12 16:18:55,345 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-12 16:18:55,397 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-12 16:18:55,398 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-12 16:18:55,398 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-12 16:18:55,398 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-12 16:18:55,398 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-12 16:18:55,398 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-12 16:18:55,398 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-12 16:18:55,399 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-12 16:18:55,450 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-11-12 16:18:55,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-11-12 16:18:55,463 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:18:55,464 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] [2018-11-12 16:18:55,466 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:18:55,475 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:18:55,475 INFO L82 PathProgramCache]: Analyzing trace with hash 491754076, now seen corresponding path program 1 times [2018-11-12 16:18:55,478 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:18:55,529 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:18:55,530 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:18:55,530 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:18:55,530 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:18:55,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:18:56,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:18:56,065 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:18:56,065 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-12 16:18:56,069 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:18:56,078 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-12 16:18:56,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-12 16:18:56,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 16:18:56,114 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 4 states. [2018-11-12 16:19:08,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:19:08,048 INFO L93 Difference]: Finished difference Result 3234 states and 6255 transitions. [2018-11-12 16:19:08,054 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-12 16:19:08,055 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2018-11-12 16:19:08,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:19:08,094 INFO L225 Difference]: With dead ends: 3234 [2018-11-12 16:19:08,094 INFO L226 Difference]: Without dead ends: 2388 [2018-11-12 16:19:08,107 INFO L604 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 [2018-11-12 16:19:08,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2388 states. [2018-11-12 16:19:08,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2388 to 1604. [2018-11-12 16:19:08,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-11-12 16:19:08,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 2600 transitions. [2018-11-12 16:19:08,292 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 2600 transitions. Word has length 28 [2018-11-12 16:19:08,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:19:08,292 INFO L480 AbstractCegarLoop]: Abstraction has 1604 states and 2600 transitions. [2018-11-12 16:19:08,293 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-12 16:19:08,293 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 2600 transitions. [2018-11-12 16:19:08,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-11-12 16:19:08,299 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:19:08,299 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:19:08,300 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:19:08,300 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:19:08,300 INFO L82 PathProgramCache]: Analyzing trace with hash -1894764938, now seen corresponding path program 1 times [2018-11-12 16:19:08,300 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:19:08,301 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:19:08,302 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:19:08,302 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:19:08,302 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:19:08,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:19:08,736 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:19:08,736 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:19:08,736 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-12 16:19:08,736 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:19:08,738 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-12 16:19:08,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-12 16:19:08,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-11-12 16:19:08,739 INFO L87 Difference]: Start difference. First operand 1604 states and 2600 transitions. Second operand 5 states. [2018-11-12 16:19:19,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:19:19,958 INFO L93 Difference]: Finished difference Result 4873 states and 7923 transitions. [2018-11-12 16:19:19,968 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-12 16:19:19,968 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 108 [2018-11-12 16:19:19,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:19:19,988 INFO L225 Difference]: With dead ends: 4873 [2018-11-12 16:19:19,988 INFO L226 Difference]: Without dead ends: 3275 [2018-11-12 16:19:19,993 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 16:19:19,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3275 states. [2018-11-12 16:19:20,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3275 to 3241. [2018-11-12 16:19:20,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3241 states. [2018-11-12 16:19:20,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3241 states to 3241 states and 4816 transitions. [2018-11-12 16:19:20,117 INFO L78 Accepts]: Start accepts. Automaton has 3241 states and 4816 transitions. Word has length 108 [2018-11-12 16:19:20,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:19:20,118 INFO L480 AbstractCegarLoop]: Abstraction has 3241 states and 4816 transitions. [2018-11-12 16:19:20,118 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-12 16:19:20,118 INFO L276 IsEmpty]: Start isEmpty. Operand 3241 states and 4816 transitions. [2018-11-12 16:19:20,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2018-11-12 16:19:20,127 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:19:20,128 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:19:20,128 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:19:20,128 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:19:20,128 INFO L82 PathProgramCache]: Analyzing trace with hash 379884815, now seen corresponding path program 1 times [2018-11-12 16:19:20,129 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:19:20,130 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:19:20,131 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:19:20,131 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:19:20,131 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:19:20,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:19:20,444 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:19:20,445 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:19:20,445 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 16:19:20,445 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:19:20,446 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 16:19:20,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 16:19:20,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 16:19:20,446 INFO L87 Difference]: Start difference. First operand 3241 states and 4816 transitions. Second operand 6 states. [2018-11-12 16:19:32,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:19:32,027 INFO L93 Difference]: Finished difference Result 12867 states and 19653 transitions. [2018-11-12 16:19:32,029 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 16:19:32,029 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 137 [2018-11-12 16:19:32,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:19:32,082 INFO L225 Difference]: With dead ends: 12867 [2018-11-12 16:19:32,082 INFO L226 Difference]: Without dead ends: 9632 [2018-11-12 16:19:32,097 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-12 16:19:32,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9632 states. [2018-11-12 16:19:32,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9632 to 9564. [2018-11-12 16:19:32,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9564 states. [2018-11-12 16:19:32,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9564 states to 9564 states and 13820 transitions. [2018-11-12 16:19:32,357 INFO L78 Accepts]: Start accepts. Automaton has 9564 states and 13820 transitions. Word has length 137 [2018-11-12 16:19:32,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:19:32,358 INFO L480 AbstractCegarLoop]: Abstraction has 9564 states and 13820 transitions. [2018-11-12 16:19:32,358 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 16:19:32,358 INFO L276 IsEmpty]: Start isEmpty. Operand 9564 states and 13820 transitions. [2018-11-12 16:19:32,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2018-11-12 16:19:32,371 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:19:32,373 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:19:32,374 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:19:32,374 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:19:32,374 INFO L82 PathProgramCache]: Analyzing trace with hash 918827063, now seen corresponding path program 1 times [2018-11-12 16:19:32,375 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:19:32,375 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:19:32,376 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:19:32,376 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:19:32,376 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:19:32,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:19:32,686 WARN L179 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 16:19:32,795 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:19:32,795 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:19:32,795 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 16:19:32,795 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:19:32,796 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 16:19:32,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 16:19:32,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 16:19:32,797 INFO L87 Difference]: Start difference. First operand 9564 states and 13820 transitions. Second operand 6 states. [2018-11-12 16:19:39,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:19:39,959 INFO L93 Difference]: Finished difference Result 25925 states and 39265 transitions. [2018-11-12 16:19:39,960 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 16:19:39,960 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 149 [2018-11-12 16:19:39,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:19:40,037 INFO L225 Difference]: With dead ends: 25925 [2018-11-12 16:19:40,037 INFO L226 Difference]: Without dead ends: 16367 [2018-11-12 16:19:40,065 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-12 16:19:40,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16367 states. [2018-11-12 16:19:40,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16367 to 16193. [2018-11-12 16:19:40,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16193 states. [2018-11-12 16:19:40,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16193 states to 16193 states and 23401 transitions. [2018-11-12 16:19:40,458 INFO L78 Accepts]: Start accepts. Automaton has 16193 states and 23401 transitions. Word has length 149 [2018-11-12 16:19:40,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:19:40,458 INFO L480 AbstractCegarLoop]: Abstraction has 16193 states and 23401 transitions. [2018-11-12 16:19:40,458 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 16:19:40,458 INFO L276 IsEmpty]: Start isEmpty. Operand 16193 states and 23401 transitions. [2018-11-12 16:19:40,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2018-11-12 16:19:40,461 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:19:40,461 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:19:40,461 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:19:40,461 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:19:40,462 INFO L82 PathProgramCache]: Analyzing trace with hash -379444241, now seen corresponding path program 1 times [2018-11-12 16:19:40,462 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:19:40,463 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:19:40,463 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:19:40,463 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:19:40,463 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:19:40,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:19:40,760 WARN L179 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 16:19:41,025 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:19:41,025 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:19:41,025 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 16:19:41,025 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:19:41,026 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 16:19:41,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 16:19:41,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 16:19:41,027 INFO L87 Difference]: Start difference. First operand 16193 states and 23401 transitions. Second operand 6 states. [2018-11-12 16:19:47,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:19:47,992 INFO L93 Difference]: Finished difference Result 39139 states and 58294 transitions. [2018-11-12 16:19:47,993 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 16:19:47,993 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 153 [2018-11-12 16:19:47,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:19:48,094 INFO L225 Difference]: With dead ends: 39139 [2018-11-12 16:19:48,094 INFO L226 Difference]: Without dead ends: 22952 [2018-11-12 16:19:48,140 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-12 16:19:48,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22952 states. [2018-11-12 16:19:48,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22952 to 22807. [2018-11-12 16:19:48,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22807 states. [2018-11-12 16:19:48,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22807 states to 22807 states and 31278 transitions. [2018-11-12 16:19:48,631 INFO L78 Accepts]: Start accepts. Automaton has 22807 states and 31278 transitions. Word has length 153 [2018-11-12 16:19:48,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:19:48,631 INFO L480 AbstractCegarLoop]: Abstraction has 22807 states and 31278 transitions. [2018-11-12 16:19:48,631 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 16:19:48,632 INFO L276 IsEmpty]: Start isEmpty. Operand 22807 states and 31278 transitions. [2018-11-12 16:19:48,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-11-12 16:19:48,635 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:19:48,636 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:19:48,636 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:19:48,636 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:19:48,636 INFO L82 PathProgramCache]: Analyzing trace with hash 96690322, now seen corresponding path program 1 times [2018-11-12 16:19:48,636 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:19:48,637 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:19:48,637 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:19:48,638 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:19:48,640 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:19:48,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:19:48,896 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:19:48,897 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:19:48,897 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-12 16:19:48,897 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:19:48,898 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-12 16:19:48,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-12 16:19:48,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 16:19:48,899 INFO L87 Difference]: Start difference. First operand 22807 states and 31278 transitions. Second operand 4 states. [2018-11-12 16:19:57,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:19:57,682 INFO L93 Difference]: Finished difference Result 55125 states and 77472 transitions. [2018-11-12 16:19:57,690 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-12 16:19:57,690 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 174 [2018-11-12 16:19:57,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:19:57,819 INFO L225 Difference]: With dead ends: 55125 [2018-11-12 16:19:57,819 INFO L226 Difference]: Without dead ends: 32324 [2018-11-12 16:19:57,876 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 16:19:57,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32324 states. [2018-11-12 16:19:58,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32324 to 32320. [2018-11-12 16:19:58,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32320 states. [2018-11-12 16:19:58,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32320 states to 32320 states and 44145 transitions. [2018-11-12 16:19:58,602 INFO L78 Accepts]: Start accepts. Automaton has 32320 states and 44145 transitions. Word has length 174 [2018-11-12 16:19:58,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:19:58,605 INFO L480 AbstractCegarLoop]: Abstraction has 32320 states and 44145 transitions. [2018-11-12 16:19:58,605 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-12 16:19:58,605 INFO L276 IsEmpty]: Start isEmpty. Operand 32320 states and 44145 transitions. [2018-11-12 16:19:58,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2018-11-12 16:19:58,615 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:19:58,615 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:19:58,616 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:19:58,616 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:19:58,616 INFO L82 PathProgramCache]: Analyzing trace with hash -1795048897, now seen corresponding path program 1 times [2018-11-12 16:19:58,616 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:19:58,617 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:19:58,617 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:19:58,617 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:19:58,617 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:19:58,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:19:58,859 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:19:58,860 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:19:58,860 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-12 16:19:58,860 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:19:58,861 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-12 16:19:58,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-12 16:19:58,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 16:19:58,861 INFO L87 Difference]: Start difference. First operand 32320 states and 44145 transitions. Second operand 4 states. [2018-11-12 16:20:07,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:20:07,139 INFO L93 Difference]: Finished difference Result 77130 states and 106644 transitions. [2018-11-12 16:20:07,147 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-12 16:20:07,147 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 177 [2018-11-12 16:20:07,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:20:07,308 INFO L225 Difference]: With dead ends: 77130 [2018-11-12 16:20:07,308 INFO L226 Difference]: Without dead ends: 44816 [2018-11-12 16:20:07,384 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 16:20:07,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44816 states. [2018-11-12 16:20:08,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44816 to 44803. [2018-11-12 16:20:08,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44803 states. [2018-11-12 16:20:08,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44803 states to 44803 states and 56594 transitions. [2018-11-12 16:20:08,234 INFO L78 Accepts]: Start accepts. Automaton has 44803 states and 56594 transitions. Word has length 177 [2018-11-12 16:20:08,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:20:08,236 INFO L480 AbstractCegarLoop]: Abstraction has 44803 states and 56594 transitions. [2018-11-12 16:20:08,236 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-12 16:20:08,237 INFO L276 IsEmpty]: Start isEmpty. Operand 44803 states and 56594 transitions. [2018-11-12 16:20:08,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2018-11-12 16:20:08,269 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:20:08,270 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:20:08,270 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:20:08,270 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:20:08,270 INFO L82 PathProgramCache]: Analyzing trace with hash -252379448, now seen corresponding path program 1 times [2018-11-12 16:20:08,271 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:20:08,272 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:20:08,272 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:20:08,272 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:20:08,272 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:20:08,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:20:08,661 WARN L179 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 16:20:08,979 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-12 16:20:08,980 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:20:08,980 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:20:08,981 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 343 with the following transitions: [2018-11-12 16:20:08,984 INFO L202 CegarAbsIntRunner]: [0], [1], [984], [988], [992], [996], [1000], [1004], [1008], [1012], [1016], [1020], [1024], [1028], [1032], [1036], [1040], [1044], [1048], [1052], [1056], [1060], [1063], [1867], [1868], [1875], [1883], [1891], [1899], [1907], [1915], [1923], [1931], [1939], [1947], [1955], [1963], [1971], [1979], [1987], [1991], [1993], [1996], [2004], [2012], [2020], [2028], [2036], [2044], [2052], [2060], [2068], [2076], [2084], [2092], [2100], [2108], [2116], [2124], [2132], [2140], [2148], [2156], [2164], [2172], [2180], [2188], [2196], [2204], [2212], [2220], [2228], [2236], [2244], [2252], [2260], [2268], [2276], [2284], [2292], [2300], [2308], [2316], [2324], [2332], [2340], [2348], [2356], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2585], [2589], [2593], [2597], [2601], [2605], [2609], [2613], [2617], [2621], [2625], [2629], [2633], [2637], [2641], [2645], [2649], [2653], [2657], [2661], [2665], [2669], [2673], [2677], [2681], [2685], [2689], [2693], [2697], [2701], [2705], [2709], [2713], [2717], [2721], [2725], [2729], [2733], [2737], [2741], [2745], [2749], [2753], [2757], [2761], [2765], [2769], [2773], [2777], [2781], [2785], [2789], [2793], [2797], [2801], [2805], [2809], [2813], [2817], [2821], [2825], [2829], [2833], [2837], [2841], [2845], [2849], [2853], [2857], [2861], [2865], [2869], [2873], [2877], [2881], [2885], [2889], [2893], [2897], [2901], [2905], [2909], [2913], [2917], [2921], [2925], [2929], [2933], [2937], [2941], [2945], [2949], [2953], [2957], [2961], [2965], [2969], [2973], [2977], [2981], [2985], [2989], [2993], [2997], [3001], [3005], [3009], [3013], [3017], [3021], [3025], [3029], [3033], [3037], [3041], [3045], [3049], [3053], [3057], [3061], [3065], [3069], [3073], [3077], [3081], [3085], [3089], [3093], [3097], [3101], [3105], [3109], [3113], [3117], [3121], [3125], [3129], [3133], [3137], [3141], [3145], [3149], [3153], [3157], [3161], [3165], [3169], [3173], [3177], [3181], [3185], [3189], [3193], [3197], [3201], [3205], [3209], [3213], [3217], [3221], [3225], [3229], [3233], [3237], [3239], [3240], [3244], [3248], [3254], [3258], [3260], [3269], [3270], [3271], [3272], [3273], [3275], [3276] [2018-11-12 16:20:09,076 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:20:09,077 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:20:10,384 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:20:11,903 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 16:20:11,904 INFO L272 AbstractInterpreter]: Visited 321 different actions 636 times. Merged at 5 different actions 5 times. Never widened. Performed 11029 root evaluator evaluations with a maximum evaluation depth of 6. Performed 11029 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-11-12 16:20:11,954 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:20:11,954 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 16:20:14,310 INFO L227 lantSequenceWeakener]: Weakened 49 states. On average, predicates are now at 76.61% of their original sizes. [2018-11-12 16:20:14,310 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 16:20:16,348 INFO L415 sIntCurrentIteration]: We unified 341 AI predicates to 341 [2018-11-12 16:20:16,349 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 16:20:16,350 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 16:20:16,350 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [23] imperfect sequences [4] total 25 [2018-11-12 16:20:16,351 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:20:16,351 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-11-12 16:20:16,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-11-12 16:20:16,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=420, Unknown=0, NotChecked=0, Total=506 [2018-11-12 16:20:16,352 INFO L87 Difference]: Start difference. First operand 44803 states and 56594 transitions. Second operand 23 states. Received shutdown request... [2018-11-12 16:22:07,656 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-11-12 16:22:07,656 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-12 16:22:07,662 WARN L205 ceAbstractionStarter]: Timeout [2018-11-12 16:22:07,663 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 04:22:07 BoogieIcfgContainer [2018-11-12 16:22:07,663 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-12 16:22:07,664 INFO L168 Benchmark]: Toolchain (without parser) took 204932.57 ms. Allocated memory was 1.5 GB in the beginning and 5.7 GB in the end (delta: 4.2 GB). Free memory was 1.4 GB in the beginning and 3.6 GB in the end (delta: -2.2 GB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. [2018-11-12 16:22:07,665 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. [2018-11-12 16:22:07,665 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2260.51 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. [2018-11-12 16:22:07,666 INFO L168 Benchmark]: Boogie Procedure Inliner took 359.50 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 770.2 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 54.4 MB. Max. memory is 7.1 GB. [2018-11-12 16:22:07,667 INFO L168 Benchmark]: Boogie Preprocessor took 220.05 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: 32.0 MB). Peak memory consumption was 32.0 MB. Max. memory is 7.1 GB. [2018-11-12 16:22:07,668 INFO L168 Benchmark]: RCFGBuilder took 9723.73 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.5 GB in the end (delta: 648.0 MB). Peak memory consumption was 648.0 MB. Max. memory is 7.1 GB. [2018-11-12 16:22:07,669 INFO L168 Benchmark]: TraceAbstraction took 192363.66 ms. Allocated memory was 2.3 GB in the beginning and 5.7 GB in the end (delta: 3.4 GB). Free memory was 1.5 GB in the beginning and 3.6 GB in the end (delta: -2.0 GB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. [2018-11-12 16:22:07,674 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 2260.51 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 359.50 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 770.2 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 54.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 220.05 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: 32.0 MB). Peak memory consumption was 32.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 9723.73 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.5 GB in the end (delta: 648.0 MB). Peak memory consumption was 648.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 192363.66 ms. Allocated memory was 2.3 GB in the beginning and 5.7 GB in the end (delta: 3.4 GB). Free memory was 1.5 GB in the beginning and 3.6 GB in the end (delta: -2.0 GB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 75]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 75). Cancelled while BasicCegarLoop was constructing difference of abstraction (44803states) and FLOYD_HOARE automaton (currently 28 states, 23 states before enhancement),while ReachableStatesComputation was computing reachable states (70640 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 840 locations, 1 error locations. TIMEOUT Result, 192.2s OverallTime, 8 OverallIterations, 2 TraceHistogramMax, 178.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 4351 SDtfs, 22817 SDslu, 1569 SDs, 0 SdLazy, 50803 SolverSat, 8293 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 99.0s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 416 GetRequests, 339 SyntacticMatches, 3 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 369 ImplicationChecksByTransitivity, 5.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44803occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 2.9s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9982818494778203 AbsIntWeakeningRatio, 0.07331378299120235 AbsIntAvgWeakeningVarsNumRemoved, 7.331378299120234 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 3.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 1222 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.6s InterpolantComputationTime, 1268 NumberOfCodeBlocks, 1268 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 1260 ConstructedInterpolants, 0 QuantifiedInterpolants, 788681 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 7 PerfectInterpolantSequences, 130/147 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown