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.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label03_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 14:49:07,741 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 14:49:07,743 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 14:49:07,757 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 14:49:07,758 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 14:49:07,759 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 14:49:07,760 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 14:49:07,762 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 14:49:07,763 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 14:49:07,764 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 14:49:07,765 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 14:49:07,766 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 14:49:07,766 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 14:49:07,767 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 14:49:07,769 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 14:49:07,769 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 14:49:07,770 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 14:49:07,772 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 14:49:07,774 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 14:49:07,776 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 14:49:07,777 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 14:49:07,778 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 14:49:07,781 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 14:49:07,781 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 14:49:07,781 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 14:49:07,782 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 14:49:07,783 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 14:49:07,784 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 14:49:07,785 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 14:49:07,788 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 14:49:07,788 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 14:49:07,789 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 14:49:07,789 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 14:49:07,789 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 14:49:07,794 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 14:49:07,794 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 14:49:07,795 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.epf [2018-11-07 14:49:07,820 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 14:49:07,820 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 14:49:07,821 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 14:49:07,822 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 14:49:07,822 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 14:49:07,822 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 14:49:07,822 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 14:49:07,822 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 14:49:07,825 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 14:49:07,825 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 14:49:07,825 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 14:49:07,825 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 14:49:07,826 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 14:49:07,826 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 14:49:07,826 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 14:49:07,827 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 14:49:07,827 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 14:49:07,827 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 14:49:07,827 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 14:49:07,827 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 14:49:07,828 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 14:49:07,828 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 14:49:07,828 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 14:49:07,828 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 14:49:07,828 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 14:49:07,829 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 14:49:07,829 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 14:49:07,829 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 14:49:07,829 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 14:49:07,829 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 14:49:07,830 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 14:49:07,830 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 14:49:07,830 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 14:49:07,830 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 14:49:07,885 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 14:49:07,904 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 14:49:07,909 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 14:49:07,911 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 14:49:07,911 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 14:49:07,912 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label03_true-unreach-call.c [2018-11-07 14:49:07,979 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22d4f871d/cbf249af223b4cf6a1b41179212f7a4b/FLAGedada584f [2018-11-07 14:49:08,841 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 14:49:08,842 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label03_true-unreach-call.c [2018-11-07 14:49:08,886 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22d4f871d/cbf249af223b4cf6a1b41179212f7a4b/FLAGedada584f [2018-11-07 14:49:08,904 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22d4f871d/cbf249af223b4cf6a1b41179212f7a4b [2018-11-07 14:49:08,918 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 14:49:08,920 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 14:49:08,922 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 14:49:08,922 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 14:49:08,926 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 14:49:08,927 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:49:08" (1/1) ... [2018-11-07 14:49:08,932 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28600eab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:49:08, skipping insertion in model container [2018-11-07 14:49:08,933 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:49:08" (1/1) ... [2018-11-07 14:49:08,946 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 14:49:09,142 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 14:49:10,604 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 14:49:10,609 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 14:49:11,392 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 14:49:11,429 INFO L193 MainTranslator]: Completed translation [2018-11-07 14:49:11,429 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:49:11 WrapperNode [2018-11-07 14:49:11,429 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 14:49:11,430 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 14:49:11,431 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 14:49:11,431 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 14:49:11,442 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:49:11" (1/1) ... [2018-11-07 14:49:11,819 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:49:11" (1/1) ... [2018-11-07 14:49:11,829 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 14:49:11,830 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 14:49:11,830 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 14:49:11,830 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 14:49:11,844 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:49:11" (1/1) ... [2018-11-07 14:49:11,844 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:49:11" (1/1) ... [2018-11-07 14:49:11,882 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:49:11" (1/1) ... [2018-11-07 14:49:11,883 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:49:11" (1/1) ... [2018-11-07 14:49:12,052 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:49:11" (1/1) ... [2018-11-07 14:49:12,105 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:49:11" (1/1) ... [2018-11-07 14:49:12,169 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:49:11" (1/1) ... [2018-11-07 14:49:12,228 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 14:49:12,229 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 14:49:12,229 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 14:49:12,229 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 14:49:12,230 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:49:11" (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 14:49:12,299 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 14:49:12,299 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 14:49:12,300 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 14:49:12,300 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-07 14:49:12,300 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-07 14:49:12,300 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 14:49:12,301 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 14:49:12,301 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 14:49:12,301 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 14:49:12,301 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 14:49:12,301 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 14:49:12,302 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 14:49:12,302 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 14:49:12,302 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 14:49:12,302 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 14:49:22,759 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 14:49:22,759 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:49:22 BoogieIcfgContainer [2018-11-07 14:49:22,760 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 14:49:22,761 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 14:49:22,761 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 14:49:22,764 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 14:49:22,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:49:08" (1/3) ... [2018-11-07 14:49:22,765 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@569ee4c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:49:22, skipping insertion in model container [2018-11-07 14:49:22,765 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:49:11" (2/3) ... [2018-11-07 14:49:22,766 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@569ee4c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:49:22, skipping insertion in model container [2018-11-07 14:49:22,766 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:49:22" (3/3) ... [2018-11-07 14:49:22,768 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label03_true-unreach-call.c [2018-11-07 14:49:22,778 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 14:49:22,787 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 14:49:22,802 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 14:49:22,851 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 14:49:22,852 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 14:49:22,852 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 14:49:22,852 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 14:49:22,852 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 14:49:22,852 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 14:49:22,853 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 14:49:22,853 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 14:49:22,913 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-11-07 14:49:22,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-11-07 14:49:22,921 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:49:22,922 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] [2018-11-07 14:49:22,924 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:49:22,929 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:49:22,929 INFO L82 PathProgramCache]: Analyzing trace with hash -1009220837, now seen corresponding path program 1 times [2018-11-07 14:49:22,931 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:49:22,982 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:49:22,983 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:49:22,983 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:49:22,983 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:49:23,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:49:23,413 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 14:49:23,418 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:49:23,418 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 14:49:23,418 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:49:23,428 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 14:49:23,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 14:49:23,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 14:49:23,450 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 4 states. [2018-11-07 14:49:36,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:49:36,835 INFO L93 Difference]: Finished difference Result 4065 states and 7606 transitions. [2018-11-07 14:49:36,837 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 14:49:36,838 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 41 [2018-11-07 14:49:36,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:49:36,891 INFO L225 Difference]: With dead ends: 4065 [2018-11-07 14:49:36,891 INFO L226 Difference]: Without dead ends: 2939 [2018-11-07 14:49:36,906 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 14:49:36,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2939 states. [2018-11-07 14:49:37,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2939 to 1972. [2018-11-07 14:49:37,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1972 states. [2018-11-07 14:49:37,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1972 states to 1972 states and 3594 transitions. [2018-11-07 14:49:37,091 INFO L78 Accepts]: Start accepts. Automaton has 1972 states and 3594 transitions. Word has length 41 [2018-11-07 14:49:37,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:49:37,092 INFO L480 AbstractCegarLoop]: Abstraction has 1972 states and 3594 transitions. [2018-11-07 14:49:37,092 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 14:49:37,092 INFO L276 IsEmpty]: Start isEmpty. Operand 1972 states and 3594 transitions. [2018-11-07 14:49:37,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-11-07 14:49:37,099 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:49:37,100 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:49:37,100 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:49:37,100 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:49:37,101 INFO L82 PathProgramCache]: Analyzing trace with hash 1838928187, now seen corresponding path program 1 times [2018-11-07 14:49:37,101 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:49:37,102 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:49:37,102 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:49:37,102 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:49:37,102 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:49:37,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:49:37,535 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:49:37,536 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:49:37,536 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 14:49:37,536 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:49:37,538 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 14:49:37,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 14:49:37,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 14:49:37,539 INFO L87 Difference]: Start difference. First operand 1972 states and 3594 transitions. Second operand 6 states. [2018-11-07 14:49:52,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:49:52,412 INFO L93 Difference]: Finished difference Result 7229 states and 13602 transitions. [2018-11-07 14:49:52,412 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 14:49:52,412 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 114 [2018-11-07 14:49:52,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:49:52,443 INFO L225 Difference]: With dead ends: 7229 [2018-11-07 14:49:52,443 INFO L226 Difference]: Without dead ends: 5263 [2018-11-07 14:49:52,455 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 [2018-11-07 14:49:52,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5263 states. [2018-11-07 14:49:52,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5263 to 5234. [2018-11-07 14:49:52,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5234 states. [2018-11-07 14:49:52,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5234 states to 5234 states and 8445 transitions. [2018-11-07 14:49:52,601 INFO L78 Accepts]: Start accepts. Automaton has 5234 states and 8445 transitions. Word has length 114 [2018-11-07 14:49:52,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:49:52,602 INFO L480 AbstractCegarLoop]: Abstraction has 5234 states and 8445 transitions. [2018-11-07 14:49:52,602 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 14:49:52,602 INFO L276 IsEmpty]: Start isEmpty. Operand 5234 states and 8445 transitions. [2018-11-07 14:49:52,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-11-07 14:49:52,608 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:49:52,608 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:49:52,608 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:49:52,609 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:49:52,609 INFO L82 PathProgramCache]: Analyzing trace with hash 1607294046, now seen corresponding path program 1 times [2018-11-07 14:49:52,609 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:49:52,610 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:49:52,610 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:49:52,610 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:49:52,610 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:49:52,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:49:52,834 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:49:52,834 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:49:52,835 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 14:49:52,835 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:49:52,835 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 14:49:52,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 14:49:52,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 14:49:52,836 INFO L87 Difference]: Start difference. First operand 5234 states and 8445 transitions. Second operand 5 states. [2018-11-07 14:50:03,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:50:03,585 INFO L93 Difference]: Finished difference Result 15736 states and 26179 transitions. [2018-11-07 14:50:03,587 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 14:50:03,587 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 143 [2018-11-07 14:50:03,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:50:03,648 INFO L225 Difference]: With dead ends: 15736 [2018-11-07 14:50:03,649 INFO L226 Difference]: Without dead ends: 10508 [2018-11-07 14:50:03,675 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 14:50:03,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10508 states. [2018-11-07 14:50:04,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10508 to 10305. [2018-11-07 14:50:04,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10305 states. [2018-11-07 14:50:04,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10305 states to 10305 states and 15524 transitions. [2018-11-07 14:50:04,116 INFO L78 Accepts]: Start accepts. Automaton has 10305 states and 15524 transitions. Word has length 143 [2018-11-07 14:50:04,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:50:04,117 INFO L480 AbstractCegarLoop]: Abstraction has 10305 states and 15524 transitions. [2018-11-07 14:50:04,117 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 14:50:04,118 INFO L276 IsEmpty]: Start isEmpty. Operand 10305 states and 15524 transitions. [2018-11-07 14:50:04,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2018-11-07 14:50:04,121 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:50:04,121 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:50:04,122 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:50:04,122 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:50:04,122 INFO L82 PathProgramCache]: Analyzing trace with hash -19334682, now seen corresponding path program 1 times [2018-11-07 14:50:04,122 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:50:04,123 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:50:04,124 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:50:04,124 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:50:04,124 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:50:04,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:50:04,442 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:50:04,442 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:50:04,442 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 14:50:04,443 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:50:04,443 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 14:50:04,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 14:50:04,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 14:50:04,444 INFO L87 Difference]: Start difference. First operand 10305 states and 15524 transitions. Second operand 5 states. [2018-11-07 14:50:24,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:50:24,355 INFO L93 Difference]: Finished difference Result 32113 states and 50338 transitions. [2018-11-07 14:50:24,356 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 14:50:24,356 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 147 [2018-11-07 14:50:24,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:50:24,446 INFO L225 Difference]: With dead ends: 32113 [2018-11-07 14:50:24,446 INFO L226 Difference]: Without dead ends: 21814 [2018-11-07 14:50:24,494 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 14:50:24,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21814 states. [2018-11-07 14:50:24,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21814 to 21591. [2018-11-07 14:50:24,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21591 states. [2018-11-07 14:50:25,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21591 states to 21591 states and 31892 transitions. [2018-11-07 14:50:25,014 INFO L78 Accepts]: Start accepts. Automaton has 21591 states and 31892 transitions. Word has length 147 [2018-11-07 14:50:25,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:50:25,014 INFO L480 AbstractCegarLoop]: Abstraction has 21591 states and 31892 transitions. [2018-11-07 14:50:25,014 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 14:50:25,015 INFO L276 IsEmpty]: Start isEmpty. Operand 21591 states and 31892 transitions. [2018-11-07 14:50:25,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2018-11-07 14:50:25,018 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:50:25,021 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:50:25,021 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:50:25,022 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:50:25,022 INFO L82 PathProgramCache]: Analyzing trace with hash -389216454, now seen corresponding path program 1 times [2018-11-07 14:50:25,022 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:50:25,023 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:50:25,023 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:50:25,023 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:50:25,023 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:50:25,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:50:25,272 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:50:25,272 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:50:25,272 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 14:50:25,272 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:50:25,273 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 14:50:25,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 14:50:25,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 14:50:25,274 INFO L87 Difference]: Start difference. First operand 21591 states and 31892 transitions. Second operand 4 states. [2018-11-07 14:50:35,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:50:35,128 INFO L93 Difference]: Finished difference Result 83795 states and 134375 transitions. [2018-11-07 14:50:35,134 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 14:50:35,134 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 157 [2018-11-07 14:50:35,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:50:35,424 INFO L225 Difference]: With dead ends: 83795 [2018-11-07 14:50:35,425 INFO L226 Difference]: Without dead ends: 62210 [2018-11-07 14:50:35,537 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 14:50:35,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62210 states. [2018-11-07 14:50:36,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62210 to 62160. [2018-11-07 14:50:36,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62160 states. [2018-11-07 14:50:36,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62160 states to 62160 states and 90659 transitions. [2018-11-07 14:50:36,890 INFO L78 Accepts]: Start accepts. Automaton has 62160 states and 90659 transitions. Word has length 157 [2018-11-07 14:50:36,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:50:36,891 INFO L480 AbstractCegarLoop]: Abstraction has 62160 states and 90659 transitions. [2018-11-07 14:50:36,891 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 14:50:36,891 INFO L276 IsEmpty]: Start isEmpty. Operand 62160 states and 90659 transitions. [2018-11-07 14:50:36,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2018-11-07 14:50:36,932 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:50:36,932 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 14:50:36,933 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:50:36,933 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:50:36,933 INFO L82 PathProgramCache]: Analyzing trace with hash -314239728, now seen corresponding path program 1 times [2018-11-07 14:50:36,933 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:50:36,934 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:50:36,934 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:50:36,934 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:50:36,935 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:50:36,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:50:37,226 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 14:50:37,944 WARN L179 SmtUtils]: Spent 533.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2018-11-07 14:50:38,077 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 68 proven. 112 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 14:50:38,077 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 14:50:38,077 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 14:50:38,078 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 311 with the following transitions: [2018-11-07 14:50:38,081 INFO L202 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2643], [2651], [2659], [2667], [2675], [2683], [2691], [2699], [2707], [2715], [2723], [2731], [2739], [2747], [2755], [2763], [2771], [2779], [2787], [2795], [2803], [2811], [2819], [2827], [2835], [2843], [2851], [2855], [2857], [2860], [2868], [2876], [2884], [2892], [2900], [2908], [2916], [2924], [2932], [2940], [2948], [2956], [2964], [2972], [2980], [2988], [2996], [3004], [3012], [3020], [3028], [3036], [3044], [3052], [3060], [3068], [3076], [3084], [3092], [3100], [3108], [3116], [3121], [3125], [3129], [3133], [3137], [3148], [3152], [3156], [3160], [3164], [3168], [3179], [3183], [3187], [3191], [3195], [3199], [3203], [3207], [3218], [3222], [3226], [3230], [3234], [3238], [3242], [3246], [3250], [3254], [3258], [3262], [3266], [3270], [3274], [3278], [3282], [3286], [3290], [3294], [3305], [3309], [3313], [3317], [3321], [3325], [3329], [3333], [3336], [3341], [3343], [3344], [3355], [3366], [3370], [3374], [3378], [3382], [3386], [3390], [3394], [3398], [3402], [3406], [3410], [3414], [3425], [3429], [3440], [3451], [3455], [3459], [3463], [3467], [3471], [3475], [3479], [3483], [3487], [3498], [3502], [3506], [3517], [3521], [3524], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-11-07 14:50:38,140 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 14:50:38,141 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 14:50:39,197 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 14:50:39,200 INFO L272 AbstractInterpreter]: Visited 155 different actions 155 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-11-07 14:50:39,244 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:50:39,244 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 14:50:40,418 INFO L227 lantSequenceWeakener]: Weakened 286 states. On average, predicates are now at 71.24% of their original sizes. [2018-11-07 14:50:40,420 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 14:50:41,293 INFO L415 sIntCurrentIteration]: We unified 309 AI predicates to 309 [2018-11-07 14:50:41,293 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 14:50:41,294 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 14:50:41,294 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [6] total 15 [2018-11-07 14:50:41,295 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:50:41,295 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-07 14:50:41,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-07 14:50:41,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-11-07 14:50:41,296 INFO L87 Difference]: Start difference. First operand 62160 states and 90659 transitions. Second operand 11 states. [2018-11-07 14:50:52,790 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown