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-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label53_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 09:10:34,723 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 09:10:34,725 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 09:10:34,739 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 09:10:34,740 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 09:10:34,741 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 09:10:34,742 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 09:10:34,744 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 09:10:34,746 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 09:10:34,746 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 09:10:34,747 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 09:10:34,748 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 09:10:34,748 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 09:10:34,749 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 09:10:34,751 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 09:10:34,751 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 09:10:34,752 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 09:10:34,754 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 09:10:34,756 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 09:10:34,757 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 09:10:34,759 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 09:10:34,760 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 09:10:34,762 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 09:10:34,762 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 09:10:34,763 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 09:10:34,764 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 09:10:34,765 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 09:10:34,766 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 09:10:34,766 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 09:10:34,768 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 09:10:34,768 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 09:10:34,769 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 09:10:34,769 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 09:10:34,769 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 09:10:34,770 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 09:10:34,771 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 09:10:34,771 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-11-07 09:10:34,800 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 09:10:34,800 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 09:10:34,801 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 09:10:34,801 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 09:10:34,802 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 09:10:34,803 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 09:10:34,804 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-07 09:10:34,804 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 09:10:34,804 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 09:10:34,804 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 09:10:34,804 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 09:10:34,804 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 09:10:34,805 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 09:10:34,805 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 09:10:34,806 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 09:10:34,806 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 09:10:34,806 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 09:10:34,806 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 09:10:34,807 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 09:10:34,807 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 09:10:34,807 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 09:10:34,807 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 09:10:34,807 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 09:10:34,809 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 09:10:34,809 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 09:10:34,809 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 09:10:34,809 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 09:10:34,810 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 09:10:34,810 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 09:10:34,810 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 09:10:34,810 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 09:10:34,810 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 09:10:34,811 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 09:10:34,811 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 09:10:34,811 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 09:10:34,811 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 09:10:34,879 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 09:10:34,897 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 09:10:34,902 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 09:10:34,903 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 09:10:34,904 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 09:10:34,904 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label53_true-unreach-call.c [2018-11-07 09:10:34,975 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc3457566/ed352cecb06641ab8d10ac18f1f5862d/FLAG6cd0fc0e9 [2018-11-07 09:10:35,649 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 09:10:35,650 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label53_true-unreach-call.c [2018-11-07 09:10:35,672 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc3457566/ed352cecb06641ab8d10ac18f1f5862d/FLAG6cd0fc0e9 [2018-11-07 09:10:35,690 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc3457566/ed352cecb06641ab8d10ac18f1f5862d [2018-11-07 09:10:35,701 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 09:10:35,703 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 09:10:35,704 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 09:10:35,704 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 09:10:35,709 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 09:10:35,710 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:10:35" (1/1) ... [2018-11-07 09:10:35,713 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33ddd7ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:10:35, skipping insertion in model container [2018-11-07 09:10:35,713 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:10:35" (1/1) ... [2018-11-07 09:10:35,723 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 09:10:35,824 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 09:10:36,601 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 09:10:36,606 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 09:10:36,921 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 09:10:36,944 INFO L193 MainTranslator]: Completed translation [2018-11-07 09:10:36,945 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:10:36 WrapperNode [2018-11-07 09:10:36,945 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 09:10:36,946 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 09:10:36,946 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 09:10:36,947 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 09:10:36,957 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:10:36" (1/1) ... [2018-11-07 09:10:37,177 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:10:36" (1/1) ... [2018-11-07 09:10:37,191 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 09:10:37,192 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 09:10:37,192 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 09:10:37,192 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 09:10:37,204 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:10:36" (1/1) ... [2018-11-07 09:10:37,204 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:10:36" (1/1) ... [2018-11-07 09:10:37,214 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:10:36" (1/1) ... [2018-11-07 09:10:37,214 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:10:36" (1/1) ... [2018-11-07 09:10:37,301 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:10:36" (1/1) ... [2018-11-07 09:10:37,320 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:10:36" (1/1) ... [2018-11-07 09:10:37,348 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:10:36" (1/1) ... [2018-11-07 09:10:37,371 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 09:10:37,371 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 09:10:37,372 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 09:10:37,372 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 09:10:37,373 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:10:36" (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 [2018-11-07 09:10:37,443 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 09:10:37,443 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 09:10:37,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 09:10:37,443 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 09:10:37,444 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 09:10:37,444 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 09:10:37,444 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 09:10:37,444 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 09:10:37,445 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 09:10:37,445 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 09:10:37,445 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 09:10:44,741 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 09:10:44,742 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:10:44 BoogieIcfgContainer [2018-11-07 09:10:44,742 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 09:10:44,743 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 09:10:44,743 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 09:10:44,747 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 09:10:44,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 09:10:35" (1/3) ... [2018-11-07 09:10:44,748 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b845625 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:10:44, skipping insertion in model container [2018-11-07 09:10:44,748 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:10:36" (2/3) ... [2018-11-07 09:10:44,748 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b845625 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:10:44, skipping insertion in model container [2018-11-07 09:10:44,749 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:10:44" (3/3) ... [2018-11-07 09:10:44,752 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label53_true-unreach-call.c [2018-11-07 09:10:44,762 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 09:10:44,772 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 09:10:44,793 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 09:10:44,843 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 09:10:44,843 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 09:10:44,843 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 09:10:44,844 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 09:10:44,844 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 09:10:44,844 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 09:10:44,844 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 09:10:44,844 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 09:10:44,898 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-11-07 09:10:44,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-11-07 09:10:44,909 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:10:44,912 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:10:44,916 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:10:44,923 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:10:44,923 INFO L82 PathProgramCache]: Analyzing trace with hash 1192963812, now seen corresponding path program 1 times [2018-11-07 09:10:44,926 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:10:44,973 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:10:44,973 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:10:44,974 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:10:44,974 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:10:45,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:10:45,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:10:45,541 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:10:45,545 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 09:10:45,545 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:10:45,557 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 09:10:45,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 09:10:45,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 09:10:45,588 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 4 states. [2018-11-07 09:10:52,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:10:52,874 INFO L93 Difference]: Finished difference Result 1550 states and 2835 transitions. [2018-11-07 09:10:52,875 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 09:10:52,876 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2018-11-07 09:10:52,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:10:52,919 INFO L225 Difference]: With dead ends: 1550 [2018-11-07 09:10:52,920 INFO L226 Difference]: Without dead ends: 1106 [2018-11-07 09:10:52,934 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 [2018-11-07 09:10:52,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1106 states. [2018-11-07 09:10:53,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1106 to 762. [2018-11-07 09:10:53,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 762 states. [2018-11-07 09:10:53,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 762 states to 762 states and 1263 transitions. [2018-11-07 09:10:53,052 INFO L78 Accepts]: Start accepts. Automaton has 762 states and 1263 transitions. Word has length 54 [2018-11-07 09:10:53,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:10:53,053 INFO L480 AbstractCegarLoop]: Abstraction has 762 states and 1263 transitions. [2018-11-07 09:10:53,053 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 09:10:53,054 INFO L276 IsEmpty]: Start isEmpty. Operand 762 states and 1263 transitions. [2018-11-07 09:10:53,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2018-11-07 09:10:53,061 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:10:53,061 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:10:53,062 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:10:53,062 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:10:53,062 INFO L82 PathProgramCache]: Analyzing trace with hash -4975238, now seen corresponding path program 1 times [2018-11-07 09:10:53,062 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:10:53,064 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:10:53,064 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:10:53,064 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:10:53,064 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:10:53,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:10:53,452 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:10:53,452 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:10:53,452 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 09:10:53,452 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:10:53,455 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 09:10:53,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 09:10:53,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 09:10:53,455 INFO L87 Difference]: Start difference. First operand 762 states and 1263 transitions. Second operand 5 states. [2018-11-07 09:10:58,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:10:58,044 INFO L93 Difference]: Finished difference Result 2248 states and 3762 transitions. [2018-11-07 09:10:58,044 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 09:10:58,045 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 127 [2018-11-07 09:10:58,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:10:58,057 INFO L225 Difference]: With dead ends: 2248 [2018-11-07 09:10:58,058 INFO L226 Difference]: Without dead ends: 1492 [2018-11-07 09:10:58,062 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 09:10:58,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1492 states. [2018-11-07 09:10:58,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1492 to 1457. [2018-11-07 09:10:58,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1457 states. [2018-11-07 09:10:58,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1457 states to 1457 states and 2152 transitions. [2018-11-07 09:10:58,138 INFO L78 Accepts]: Start accepts. Automaton has 1457 states and 2152 transitions. Word has length 127 [2018-11-07 09:10:58,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:10:58,139 INFO L480 AbstractCegarLoop]: Abstraction has 1457 states and 2152 transitions. [2018-11-07 09:10:58,139 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 09:10:58,139 INFO L276 IsEmpty]: Start isEmpty. Operand 1457 states and 2152 transitions. [2018-11-07 09:10:58,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2018-11-07 09:10:58,152 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:10:58,153 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:10:58,153 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:10:58,154 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:10:58,154 INFO L82 PathProgramCache]: Analyzing trace with hash -2136699286, now seen corresponding path program 1 times [2018-11-07 09:10:58,154 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:10:58,155 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:10:58,155 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:10:58,155 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:10:58,155 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:10:58,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:10:58,565 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 4 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:10:58,566 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:10:58,566 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:10:58,568 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 136 with the following transitions: [2018-11-07 09:10:58,571 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [405], [407], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [617], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 09:10:58,642 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:10:58,642 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:10:59,150 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 09:10:59,152 INFO L272 AbstractInterpreter]: Visited 85 different actions 85 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 09:10:59,196 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:10:59,197 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 09:10:59,505 INFO L227 lantSequenceWeakener]: Weakened 129 states. On average, predicates are now at 78.53% of their original sizes. [2018-11-07 09:10:59,506 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 09:10:59,723 INFO L415 sIntCurrentIteration]: We unified 134 AI predicates to 134 [2018-11-07 09:10:59,724 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 09:10:59,725 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 09:10:59,725 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2018-11-07 09:10:59,725 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:10:59,726 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 09:10:59,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 09:10:59,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 09:10:59,727 INFO L87 Difference]: Start difference. First operand 1457 states and 2152 transitions. Second operand 6 states. [2018-11-07 09:12:13,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:12:13,073 INFO L93 Difference]: Finished difference Result 3218 states and 4681 transitions. [2018-11-07 09:12:13,073 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-07 09:12:13,073 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 135 [2018-11-07 09:12:13,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:12:13,086 INFO L225 Difference]: With dead ends: 3218 [2018-11-07 09:12:13,086 INFO L226 Difference]: Without dead ends: 1767 [2018-11-07 09:12:13,091 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 135 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-11-07 09:12:13,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1767 states. [2018-11-07 09:12:13,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1767 to 1765. [2018-11-07 09:12:13,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1765 states. [2018-11-07 09:12:13,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1765 states to 1765 states and 2468 transitions. [2018-11-07 09:12:13,139 INFO L78 Accepts]: Start accepts. Automaton has 1765 states and 2468 transitions. Word has length 135 [2018-11-07 09:12:13,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:12:13,141 INFO L480 AbstractCegarLoop]: Abstraction has 1765 states and 2468 transitions. [2018-11-07 09:12:13,141 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 09:12:13,141 INFO L276 IsEmpty]: Start isEmpty. Operand 1765 states and 2468 transitions. [2018-11-07 09:12:13,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2018-11-07 09:12:13,144 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:12:13,145 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:12:13,149 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:12:13,149 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:12:13,149 INFO L82 PathProgramCache]: Analyzing trace with hash -1554168383, now seen corresponding path program 1 times [2018-11-07 09:12:13,149 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:12:13,150 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:12:13,151 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:12:13,151 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:12:13,151 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:12:13,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:12:13,572 WARN L179 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 09:12:14,396 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 48 proven. 120 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-11-07 09:12:14,396 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:12:14,396 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:12:14,397 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 232 with the following transitions: [2018-11-07 09:12:14,397 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [405], [407], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [617], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 09:12:14,402 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:12:14,403 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:12:14,566 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 09:12:14,566 INFO L272 AbstractInterpreter]: Visited 104 different actions 299 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 09:12:14,603 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:12:14,604 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 09:12:14,859 INFO L227 lantSequenceWeakener]: Weakened 228 states. On average, predicates are now at 84.12% of their original sizes. [2018-11-07 09:12:14,860 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 09:12:14,997 INFO L415 sIntCurrentIteration]: We unified 230 AI predicates to 230 [2018-11-07 09:12:14,997 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 09:12:14,998 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 09:12:14,998 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [13] total 20 [2018-11-07 09:12:14,998 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:12:14,999 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-07 09:12:14,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-07 09:12:14,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-11-07 09:12:15,000 INFO L87 Difference]: Start difference. First operand 1765 states and 2468 transitions. Second operand 9 states. [2018-11-07 09:13:45,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:13:45,130 INFO L93 Difference]: Finished difference Result 3536 states and 5008 transitions. [2018-11-07 09:13:45,131 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-07 09:13:45,131 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 231 [2018-11-07 09:13:45,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:13:45,141 INFO L225 Difference]: With dead ends: 3536 [2018-11-07 09:13:45,141 INFO L226 Difference]: Without dead ends: 2085 [2018-11-07 09:13:45,146 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 236 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2018-11-07 09:13:45,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2085 states. [2018-11-07 09:13:45,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2085 to 2082. [2018-11-07 09:13:45,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2082 states. [2018-11-07 09:13:45,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2082 states to 2082 states and 2807 transitions. [2018-11-07 09:13:45,194 INFO L78 Accepts]: Start accepts. Automaton has 2082 states and 2807 transitions. Word has length 231 [2018-11-07 09:13:45,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:13:45,195 INFO L480 AbstractCegarLoop]: Abstraction has 2082 states and 2807 transitions. [2018-11-07 09:13:45,195 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-07 09:13:45,196 INFO L276 IsEmpty]: Start isEmpty. Operand 2082 states and 2807 transitions. [2018-11-07 09:13:45,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2018-11-07 09:13:45,201 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:13:45,201 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:13:45,202 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:13:45,202 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:13:45,202 INFO L82 PathProgramCache]: Analyzing trace with hash 1716138778, now seen corresponding path program 1 times [2018-11-07 09:13:45,202 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:13:45,203 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:13:45,203 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:13:45,204 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:13:45,204 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:13:45,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:13:45,566 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:13:45,567 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:13:45,567 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 09:13:45,567 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:13:45,568 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 09:13:45,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 09:13:45,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 09:13:45,569 INFO L87 Difference]: Start difference. First operand 2082 states and 2807 transitions. Second operand 4 states. [2018-11-07 09:13:49,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:13:49,391 INFO L93 Difference]: Finished difference Result 6030 states and 8966 transitions. [2018-11-07 09:13:49,395 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 09:13:49,395 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 341 [2018-11-07 09:13:49,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:13:49,422 INFO L225 Difference]: With dead ends: 6030 [2018-11-07 09:13:49,422 INFO L226 Difference]: Without dead ends: 4579 [2018-11-07 09:13:49,437 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 [2018-11-07 09:13:49,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4579 states. [2018-11-07 09:13:49,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4579 to 4576. [2018-11-07 09:13:49,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4576 states. [2018-11-07 09:13:49,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4576 states to 4576 states and 6152 transitions. [2018-11-07 09:13:49,569 INFO L78 Accepts]: Start accepts. Automaton has 4576 states and 6152 transitions. Word has length 341 [2018-11-07 09:13:49,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:13:49,571 INFO L480 AbstractCegarLoop]: Abstraction has 4576 states and 6152 transitions. [2018-11-07 09:13:49,571 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 09:13:49,571 INFO L276 IsEmpty]: Start isEmpty. Operand 4576 states and 6152 transitions. [2018-11-07 09:13:49,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2018-11-07 09:13:49,582 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:13:49,583 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-07 09:13:49,583 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:13:49,583 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:13:49,583 INFO L82 PathProgramCache]: Analyzing trace with hash -259205284, now seen corresponding path program 1 times [2018-11-07 09:13:49,583 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:13:49,584 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:13:49,585 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:13:49,585 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:13:49,585 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:13:49,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:13:50,691 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 240 proven. 154 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 09:13:50,692 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:13:50,692 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:13:50,692 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 433 with the following transitions: [2018-11-07 09:13:50,693 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [405], [407], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [617], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1209], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 09:13:50,700 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:13:50,700 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:13:51,456 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 09:13:51,456 INFO L272 AbstractInterpreter]: Visited 211 different actions 1040 times. Merged at 8 different actions 32 times. Never widened. Found 7 fixpoints after 2 different actions. Largest state had 24 variables. [2018-11-07 09:13:51,462 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:13:51,463 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 09:13:51,463 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:13:51,464 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 09:13:51,481 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:13:51,482 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 09:13:51,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:13:51,646 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 09:13:52,278 WARN L179 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-11-07 09:13:52,672 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 310 proven. 41 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2018-11-07 09:13:52,672 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 09:13:53,184 WARN L179 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-11-07 09:13:53,421 WARN L179 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 09:13:54,012 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 151 proven. 243 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 09:13:54,033 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 09:13:54,034 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 18 [2018-11-07 09:13:54,034 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 09:13:54,035 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-07 09:13:54,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-07 09:13:54,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2018-11-07 09:13:54,036 INFO L87 Difference]: Start difference. First operand 4576 states and 6152 transitions. Second operand 13 states. [2018-11-07 09:13:54,808 WARN L179 SmtUtils]: Spent 357.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 27 [2018-11-07 09:14:08,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:14:08,368 INFO L93 Difference]: Finished difference Result 19829 states and 26747 transitions. [2018-11-07 09:14:08,370 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-11-07 09:14:08,370 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 432 [2018-11-07 09:14:08,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:14:08,440 INFO L225 Difference]: With dead ends: 19829 [2018-11-07 09:14:08,441 INFO L226 Difference]: Without dead ends: 14331 [2018-11-07 09:14:08,482 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 922 GetRequests, 881 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 426 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=428, Invalid=1294, Unknown=0, NotChecked=0, Total=1722 [2018-11-07 09:14:08,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14331 states. [2018-11-07 09:14:08,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14331 to 12247. [2018-11-07 09:14:08,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12247 states. [2018-11-07 09:14:08,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12247 states to 12247 states and 16431 transitions. [2018-11-07 09:14:08,828 INFO L78 Accepts]: Start accepts. Automaton has 12247 states and 16431 transitions. Word has length 432 [2018-11-07 09:14:08,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:14:08,828 INFO L480 AbstractCegarLoop]: Abstraction has 12247 states and 16431 transitions. [2018-11-07 09:14:08,828 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-07 09:14:08,829 INFO L276 IsEmpty]: Start isEmpty. Operand 12247 states and 16431 transitions. [2018-11-07 09:14:08,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 481 [2018-11-07 09:14:08,848 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:14:08,849 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-07 09:14:08,849 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:14:08,849 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:14:08,850 INFO L82 PathProgramCache]: Analyzing trace with hash -720465391, now seen corresponding path program 1 times [2018-11-07 09:14:08,850 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:14:08,851 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:14:08,851 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:14:08,851 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:14:08,851 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:14:08,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:14:09,365 WARN L179 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 09:14:10,760 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 164 proven. 191 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-11-07 09:14:10,761 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:14:10,761 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:14:10,761 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 481 with the following transitions: [2018-11-07 09:14:10,762 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [405], [407], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [566], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [617], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1561], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 09:14:10,775 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:14:10,775 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:14:12,530 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 09:14:12,530 INFO L272 AbstractInterpreter]: Visited 285 different actions 1136 times. Merged at 8 different actions 31 times. Never widened. Found 7 fixpoints after 3 different actions. Largest state had 24 variables. [2018-11-07 09:14:12,568 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:14:12,568 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 09:14:12,568 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:14:12,568 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 09:14:12,586 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:14:12,587 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 09:14:12,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:14:12,724 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 09:14:13,220 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 293 proven. 2 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-11-07 09:14:13,220 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 09:14:13,663 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 293 proven. 2 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-11-07 09:14:13,683 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 09:14:13,684 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 5, 5] total 18 [2018-11-07 09:14:13,684 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 09:14:13,685 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-07 09:14:13,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-07 09:14:13,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2018-11-07 09:14:13,686 INFO L87 Difference]: Start difference. First operand 12247 states and 16431 transitions. Second operand 16 states. [2018-11-07 09:14:14,716 WARN L179 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 25 [2018-11-07 09:14:16,280 WARN L179 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 46 Received shutdown request... [2018-11-07 09:14:31,157 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-11-07 09:14:31,157 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 09:14:31,165 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 09:14:31,165 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 09:14:31 BoogieIcfgContainer [2018-11-07 09:14:31,165 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 09:14:31,166 INFO L168 Benchmark]: Toolchain (without parser) took 235464.47 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 388.8 MB). Peak memory consumption was 3.0 GB. Max. memory is 7.1 GB. [2018-11-07 09:14:31,168 INFO L168 Benchmark]: CDTParser took 1.36 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. [2018-11-07 09:14:31,168 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1241.47 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: 105.7 MB). Peak memory consumption was 105.7 MB. Max. memory is 7.1 GB. [2018-11-07 09:14:31,169 INFO L168 Benchmark]: Boogie Procedure Inliner took 245.31 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 736.6 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -881.3 MB). Peak memory consumption was 31.4 MB. Max. memory is 7.1 GB. [2018-11-07 09:14:31,170 INFO L168 Benchmark]: Boogie Preprocessor took 179.24 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: 14.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. [2018-11-07 09:14:31,171 INFO L168 Benchmark]: RCFGBuilder took 7370.50 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 282.8 MB). Peak memory consumption was 282.8 MB. Max. memory is 7.1 GB. [2018-11-07 09:14:31,171 INFO L168 Benchmark]: TraceAbstraction took 226422.58 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 1.9 GB in the beginning and 1.0 GB in the end (delta: 867.4 MB). Peak memory consumption was 2.7 GB. Max. memory is 7.1 GB. [2018-11-07 09:14:31,176 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.36 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 1241.47 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: 105.7 MB). Peak memory consumption was 105.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 245.31 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 736.6 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -881.3 MB). Peak memory consumption was 31.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 179.24 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: 14.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 7370.50 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 282.8 MB). Peak memory consumption was 282.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 226422.58 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 1.9 GB in the beginning and 1.0 GB in the end (delta: 867.4 MB). Peak memory consumption was 2.7 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 148]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 148). Cancelled while BasicCegarLoop was constructing difference of abstraction (12247states) and FLOYD_HOARE automaton (currently 53 states, 16 states before enhancement),while ReachableStatesComputation was computing reachable states (34867 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 438 locations, 1 error locations. TIMEOUT Result, 226.3s OverallTime, 7 OverallIterations, 4 TraceHistogramMax, 211.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2052 SDtfs, 21717 SDslu, 2763 SDs, 0 SdLazy, 23006 SolverSat, 8956 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 169.7s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 2381 GetRequests, 2243 SyntacticMatches, 7 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1769 ImplicationChecksByTransitivity, 7.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12247occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 3.4s AbstIntTime, 4 AbstIntIterations, 2 AbstIntStrong, 0.9966997625942783 AbsIntWeakeningRatio, 0.12637362637362637 AbsIntAvgWeakeningVarsNumRemoved, 15.285714285714286 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 6 MinimizatonAttempts, 2471 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 7.5s InterpolantComputationTime, 2712 NumberOfCodeBlocks, 2712 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 3613 ConstructedInterpolants, 0 QuantifiedInterpolants, 10905818 SizeOfPredicates, 9 NumberOfNonLiveVariables, 1346 ConjunctsInSsa, 21 ConjunctsInUnsatCore, 11 InterpolantComputations, 3 PerfectInterpolantSequences, 1803/2599 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown