java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label23_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-63daa26 [2018-11-12 19:41:04,869 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-12 19:41:04,872 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-12 19:41:04,886 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-12 19:41:04,886 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-12 19:41:04,887 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-12 19:41:04,888 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-12 19:41:04,890 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-12 19:41:04,892 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-12 19:41:04,893 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-12 19:41:04,894 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-12 19:41:04,894 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-12 19:41:04,895 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-12 19:41:04,896 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-12 19:41:04,899 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-12 19:41:04,900 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-12 19:41:04,902 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-12 19:41:04,907 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-12 19:41:04,909 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-12 19:41:04,915 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-12 19:41:04,920 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-12 19:41:04,922 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-12 19:41:04,926 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-12 19:41:04,926 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-12 19:41:04,926 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-12 19:41:04,928 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-12 19:41:04,931 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-12 19:41:04,932 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-12 19:41:04,933 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-12 19:41:04,934 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-12 19:41:04,934 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-12 19:41:04,935 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-12 19:41:04,937 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-12 19:41:04,937 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-12 19:41:04,938 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-12 19:41:04,939 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-12 19:41:04,939 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf [2018-11-12 19:41:04,969 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-12 19:41:04,969 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-12 19:41:04,972 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-12 19:41:04,972 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-12 19:41:04,972 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-12 19:41:04,976 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-12 19:41:04,976 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-12 19:41:04,976 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-12 19:41:04,976 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-12 19:41:04,977 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-12 19:41:04,977 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-12 19:41:04,977 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-12 19:41:04,977 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-12 19:41:04,978 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-12 19:41:04,978 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-12 19:41:04,978 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-12 19:41:04,979 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-12 19:41:04,979 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-12 19:41:04,979 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-12 19:41:04,979 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-12 19:41:04,979 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-12 19:41:04,980 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-12 19:41:04,980 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-12 19:41:04,980 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-12 19:41:04,980 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-12 19:41:04,980 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 19:41:04,981 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-12 19:41:04,981 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-12 19:41:04,981 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-12 19:41:04,981 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-12 19:41:04,981 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-12 19:41:04,982 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-12 19:41:04,982 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-12 19:41:04,982 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-12 19:41:04,982 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-12 19:41:05,032 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-12 19:41:05,050 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-12 19:41:05,055 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-12 19:41:05,061 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-12 19:41:05,061 INFO L276 PluginConnector]: CDTParser initialized [2018-11-12 19:41:05,062 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label23_true-unreach-call.c [2018-11-12 19:41:05,132 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef921f4cb/cd5a44c221b04a918ca74bef95ef9c0e/FLAG691a5277d [2018-11-12 19:41:05,846 INFO L298 CDTParser]: Found 1 translation units. [2018-11-12 19:41:05,846 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label23_true-unreach-call.c [2018-11-12 19:41:05,870 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef921f4cb/cd5a44c221b04a918ca74bef95ef9c0e/FLAG691a5277d [2018-11-12 19:41:05,892 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef921f4cb/cd5a44c221b04a918ca74bef95ef9c0e [2018-11-12 19:41:05,905 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-12 19:41:05,907 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-12 19:41:05,908 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-12 19:41:05,909 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-12 19:41:05,914 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-12 19:41:05,915 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 07:41:05" (1/1) ... [2018-11-12 19:41:05,919 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b33f263 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:41:05, skipping insertion in model container [2018-11-12 19:41:05,919 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 07:41:05" (1/1) ... [2018-11-12 19:41:05,931 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-12 19:41:06,077 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-12 19:41:07,170 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 19:41:07,176 INFO L189 MainTranslator]: Completed pre-run [2018-11-12 19:41:07,635 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 19:41:07,664 INFO L193 MainTranslator]: Completed translation [2018-11-12 19:41:07,665 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:41:07 WrapperNode [2018-11-12 19:41:07,665 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-12 19:41:07,666 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-12 19:41:07,666 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-12 19:41:07,667 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-12 19:41:07,676 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:41:07" (1/1) ... [2018-11-12 19:41:07,933 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:41:07" (1/1) ... [2018-11-12 19:41:07,944 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-12 19:41:07,945 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-12 19:41:07,945 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-12 19:41:07,945 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-12 19:41:07,957 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:41:07" (1/1) ... [2018-11-12 19:41:07,958 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:41:07" (1/1) ... [2018-11-12 19:41:07,977 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:41:07" (1/1) ... [2018-11-12 19:41:07,979 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:41:07" (1/1) ... [2018-11-12 19:41:08,086 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:41:07" (1/1) ... [2018-11-12 19:41:08,134 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:41:07" (1/1) ... [2018-11-12 19:41:08,155 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:41:07" (1/1) ... [2018-11-12 19:41:08,176 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-12 19:41:08,176 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-12 19:41:08,177 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-12 19:41:08,177 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-12 19:41:08,178 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:41:07" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 19:41:08,251 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-12 19:41:08,251 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-12 19:41:08,251 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-12 19:41:08,252 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-12 19:41:08,252 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-12 19:41:08,252 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-12 19:41:08,252 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-12 19:41:08,252 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-12 19:41:08,253 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-12 19:41:08,253 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-12 19:41:08,253 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-12 19:41:08,253 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-12 19:41:08,253 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-12 19:41:15,673 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-12 19:41:15,674 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 07:41:15 BoogieIcfgContainer [2018-11-12 19:41:15,674 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-12 19:41:15,676 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-12 19:41:15,678 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-12 19:41:15,682 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-12 19:41:15,682 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 07:41:05" (1/3) ... [2018-11-12 19:41:15,683 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27687c60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 07:41:15, skipping insertion in model container [2018-11-12 19:41:15,683 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:41:07" (2/3) ... [2018-11-12 19:41:15,686 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27687c60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 07:41:15, skipping insertion in model container [2018-11-12 19:41:15,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 07:41:15" (3/3) ... [2018-11-12 19:41:15,689 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label23_true-unreach-call.c [2018-11-12 19:41:15,700 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-12 19:41:15,716 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-12 19:41:15,734 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-12 19:41:15,789 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-12 19:41:15,790 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-12 19:41:15,790 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-12 19:41:15,790 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-12 19:41:15,790 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-12 19:41:15,790 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-12 19:41:15,790 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-12 19:41:15,791 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-12 19:41:15,831 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-11-12 19:41:15,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-11-12 19:41:15,841 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:41:15,842 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:41:15,845 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:41:15,851 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:41:15,852 INFO L82 PathProgramCache]: Analyzing trace with hash -1417281084, now seen corresponding path program 1 times [2018-11-12 19:41:15,855 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:41:15,909 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:41:15,909 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:41:15,909 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:41:15,909 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:41:16,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:41:16,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:41:16,313 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 19:41:16,313 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-12 19:41:16,314 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:41:16,321 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-12 19:41:16,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-12 19:41:16,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 19:41:16,342 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 3 states. [2018-11-12 19:41:23,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:41:23,140 INFO L93 Difference]: Finished difference Result 2251 states and 4322 transitions. [2018-11-12 19:41:23,141 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-12 19:41:23,142 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 62 [2018-11-12 19:41:23,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:41:23,179 INFO L225 Difference]: With dead ends: 2251 [2018-11-12 19:41:23,179 INFO L226 Difference]: Without dead ends: 1474 [2018-11-12 19:41:23,190 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 19:41:23,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2018-11-12 19:41:23,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1474. [2018-11-12 19:41:23,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2018-11-12 19:41:23,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2721 transitions. [2018-11-12 19:41:23,357 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2721 transitions. Word has length 62 [2018-11-12 19:41:23,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:41:23,358 INFO L480 AbstractCegarLoop]: Abstraction has 1474 states and 2721 transitions. [2018-11-12 19:41:23,358 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-12 19:41:23,359 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2721 transitions. [2018-11-12 19:41:23,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-11-12 19:41:23,374 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:41:23,374 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, 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] [2018-11-12 19:41:23,375 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:41:23,375 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:41:23,375 INFO L82 PathProgramCache]: Analyzing trace with hash 586978190, now seen corresponding path program 1 times [2018-11-12 19:41:23,375 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:41:23,377 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:41:23,377 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:41:23,378 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:41:23,378 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:41:23,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:41:23,673 WARN L179 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 19:41:23,712 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:41:23,713 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 19:41:23,713 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-12 19:41:23,713 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:41:23,718 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-12 19:41:23,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-12 19:41:23,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-12 19:41:23,719 INFO L87 Difference]: Start difference. First operand 1474 states and 2721 transitions. Second operand 5 states. [2018-11-12 19:41:31,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:41:31,003 INFO L93 Difference]: Finished difference Result 3698 states and 6787 transitions. [2018-11-12 19:41:31,004 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 19:41:31,004 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 134 [2018-11-12 19:41:31,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:41:31,018 INFO L225 Difference]: With dead ends: 3698 [2018-11-12 19:41:31,018 INFO L226 Difference]: Without dead ends: 2230 [2018-11-12 19:41:31,024 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-12 19:41:31,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2230 states. [2018-11-12 19:41:31,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2230 to 2209. [2018-11-12 19:41:31,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2209 states. [2018-11-12 19:41:31,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2209 states to 2209 states and 3833 transitions. [2018-11-12 19:41:31,093 INFO L78 Accepts]: Start accepts. Automaton has 2209 states and 3833 transitions. Word has length 134 [2018-11-12 19:41:31,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:41:31,094 INFO L480 AbstractCegarLoop]: Abstraction has 2209 states and 3833 transitions. [2018-11-12 19:41:31,094 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-12 19:41:31,094 INFO L276 IsEmpty]: Start isEmpty. Operand 2209 states and 3833 transitions. [2018-11-12 19:41:31,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2018-11-12 19:41:31,098 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:41:31,098 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, 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] [2018-11-12 19:41:31,099 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:41:31,099 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:41:31,099 INFO L82 PathProgramCache]: Analyzing trace with hash -171937505, now seen corresponding path program 1 times [2018-11-12 19:41:31,099 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:41:31,100 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:41:31,101 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:41:31,101 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:41:31,101 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:41:31,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:41:31,364 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:41:31,365 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 19:41:31,365 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 19:41:31,365 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:41:31,366 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 19:41:31,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 19:41:31,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 19:41:31,366 INFO L87 Difference]: Start difference. First operand 2209 states and 3833 transitions. Second operand 6 states. [2018-11-12 19:41:38,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:41:38,961 INFO L93 Difference]: Finished difference Result 5866 states and 10122 transitions. [2018-11-12 19:41:38,970 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 19:41:38,970 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 157 [2018-11-12 19:41:38,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:41:38,995 INFO L225 Difference]: With dead ends: 5866 [2018-11-12 19:41:38,996 INFO L226 Difference]: Without dead ends: 3663 [2018-11-12 19:41:39,005 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-12 19:41:39,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3663 states. [2018-11-12 19:41:39,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3663 to 3639. [2018-11-12 19:41:39,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3639 states. [2018-11-12 19:41:39,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3639 states to 3639 states and 5517 transitions. [2018-11-12 19:41:39,111 INFO L78 Accepts]: Start accepts. Automaton has 3639 states and 5517 transitions. Word has length 157 [2018-11-12 19:41:39,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:41:39,112 INFO L480 AbstractCegarLoop]: Abstraction has 3639 states and 5517 transitions. [2018-11-12 19:41:39,112 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 19:41:39,112 INFO L276 IsEmpty]: Start isEmpty. Operand 3639 states and 5517 transitions. [2018-11-12 19:41:39,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2018-11-12 19:41:39,115 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:41:39,115 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, 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] [2018-11-12 19:41:39,116 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:41:39,116 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:41:39,116 INFO L82 PathProgramCache]: Analyzing trace with hash -96062505, now seen corresponding path program 1 times [2018-11-12 19:41:39,116 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:41:39,117 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:41:39,117 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:41:39,117 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:41:39,118 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:41:39,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:41:39,303 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:41:39,303 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 19:41:39,303 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 19:41:39,304 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:41:39,304 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 19:41:39,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 19:41:39,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 19:41:39,305 INFO L87 Difference]: Start difference. First operand 3639 states and 5517 transitions. Second operand 6 states. [2018-11-12 19:41:46,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:41:46,482 INFO L93 Difference]: Finished difference Result 8735 states and 13271 transitions. [2018-11-12 19:41:46,484 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 19:41:46,484 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 161 [2018-11-12 19:41:46,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:41:46,507 INFO L225 Difference]: With dead ends: 8735 [2018-11-12 19:41:46,507 INFO L226 Difference]: Without dead ends: 5102 [2018-11-12 19:41:46,519 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-12 19:41:46,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5102 states. [2018-11-12 19:41:46,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5102 to 5084. [2018-11-12 19:41:46,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5084 states. [2018-11-12 19:41:46,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5084 states to 5084 states and 6940 transitions. [2018-11-12 19:41:46,636 INFO L78 Accepts]: Start accepts. Automaton has 5084 states and 6940 transitions. Word has length 161 [2018-11-12 19:41:46,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:41:46,636 INFO L480 AbstractCegarLoop]: Abstraction has 5084 states and 6940 transitions. [2018-11-12 19:41:46,637 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 19:41:46,637 INFO L276 IsEmpty]: Start isEmpty. Operand 5084 states and 6940 transitions. [2018-11-12 19:41:46,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2018-11-12 19:41:46,641 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:41:46,641 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, 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] [2018-11-12 19:41:46,641 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:41:46,642 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:41:46,642 INFO L82 PathProgramCache]: Analyzing trace with hash 1854006202, now seen corresponding path program 1 times [2018-11-12 19:41:46,642 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:41:46,643 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:41:46,643 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:41:46,643 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:41:46,643 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:41:46,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:41:46,878 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:41:46,878 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 19:41:46,878 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 19:41:46,878 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:41:46,879 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 19:41:46,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 19:41:46,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 19:41:46,880 INFO L87 Difference]: Start difference. First operand 5084 states and 6940 transitions. Second operand 6 states. [2018-11-12 19:41:52,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:41:52,560 INFO L93 Difference]: Finished difference Result 13307 states and 18750 transitions. [2018-11-12 19:41:52,569 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 19:41:52,569 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 192 [2018-11-12 19:41:52,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:41:52,600 INFO L225 Difference]: With dead ends: 13307 [2018-11-12 19:41:52,600 INFO L226 Difference]: Without dead ends: 8229 [2018-11-12 19:41:52,613 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-12 19:41:52,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8229 states. [2018-11-12 19:41:52,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8229 to 8128. [2018-11-12 19:41:52,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8128 states. [2018-11-12 19:41:52,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8128 states to 8128 states and 10817 transitions. [2018-11-12 19:41:52,805 INFO L78 Accepts]: Start accepts. Automaton has 8128 states and 10817 transitions. Word has length 192 [2018-11-12 19:41:52,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:41:52,805 INFO L480 AbstractCegarLoop]: Abstraction has 8128 states and 10817 transitions. [2018-11-12 19:41:52,805 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 19:41:52,806 INFO L276 IsEmpty]: Start isEmpty. Operand 8128 states and 10817 transitions. [2018-11-12 19:41:52,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2018-11-12 19:41:52,813 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:41:52,814 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:41:52,814 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:41:52,814 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:41:52,814 INFO L82 PathProgramCache]: Analyzing trace with hash 1030698289, now seen corresponding path program 1 times [2018-11-12 19:41:52,815 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:41:52,815 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:41:52,816 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:41:52,816 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:41:52,816 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:41:52,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:41:53,247 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 110 proven. 67 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-12 19:41:53,248 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:41:53,248 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:41:53,249 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 226 with the following transitions: [2018-11-12 19:41:53,251 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1839], [1847], [1855], [1863], [1871], [1879], [1887], [1895], [1903], [1911], [1919], [1927], [1935], [1943], [1951], [1959], [1967], [1975], [1983], [1991], [1999], [2007], [2015], [2019], [2021], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2117], [2121], [2124], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2200], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-11-12 19:41:53,306 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:41:53,306 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:41:53,823 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:41:53,825 INFO L272 AbstractInterpreter]: Visited 96 different actions 96 times. Never merged. Never widened. Performed 793 root evaluator evaluations with a maximum evaluation depth of 6. Performed 793 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Never found a fixpoint. Largest state had 24 variables. [2018-11-12 19:41:53,870 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:41:53,871 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 19:41:54,408 INFO L227 lantSequenceWeakener]: Weakened 216 states. On average, predicates are now at 78.18% of their original sizes. [2018-11-12 19:41:54,409 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:41:54,759 INFO L415 sIntCurrentIteration]: We unified 224 AI predicates to 224 [2018-11-12 19:41:54,759 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 19:41:54,764 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:41:54,764 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-11-12 19:41:54,764 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:41:54,765 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-12 19:41:54,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-12 19:41:54,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-12 19:41:54,765 INFO L87 Difference]: Start difference. First operand 8128 states and 10817 transitions. Second operand 7 states. [2018-11-12 19:42:03,610 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:42:35,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:42:35,106 INFO L93 Difference]: Finished difference Result 16955 states and 22499 transitions. [2018-11-12 19:42:35,107 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 19:42:35,107 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 225 [2018-11-12 19:42:35,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:42:35,134 INFO L225 Difference]: With dead ends: 16955 [2018-11-12 19:42:35,135 INFO L226 Difference]: Without dead ends: 8833 [2018-11-12 19:42:35,150 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 225 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-11-12 19:42:35,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8833 states. [2018-11-12 19:42:35,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8833 to 8831. [2018-11-12 19:42:35,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8831 states. [2018-11-12 19:42:35,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8831 states to 8831 states and 11532 transitions. [2018-11-12 19:42:35,350 INFO L78 Accepts]: Start accepts. Automaton has 8831 states and 11532 transitions. Word has length 225 [2018-11-12 19:42:35,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:42:35,350 INFO L480 AbstractCegarLoop]: Abstraction has 8831 states and 11532 transitions. [2018-11-12 19:42:35,351 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-12 19:42:35,351 INFO L276 IsEmpty]: Start isEmpty. Operand 8831 states and 11532 transitions. [2018-11-12 19:42:35,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2018-11-12 19:42:35,366 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:42:35,367 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, 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, 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] [2018-11-12 19:42:35,367 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:42:35,368 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:42:35,368 INFO L82 PathProgramCache]: Analyzing trace with hash 1304753262, now seen corresponding path program 1 times [2018-11-12 19:42:35,368 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:42:35,369 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:42:35,370 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:42:35,370 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:42:35,370 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:42:35,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:42:36,251 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 224 proven. 171 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-12 19:42:36,251 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:42:36,251 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:42:36,252 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 413 with the following transitions: [2018-11-12 19:42:36,253 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1839], [1847], [1855], [1863], [1871], [1879], [1887], [1895], [1903], [1911], [1919], [1927], [1935], [1943], [1951], [1959], [1967], [1975], [1983], [1991], [1999], [2007], [2015], [2019], [2021], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2117], [2121], [2124], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2200], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2269], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2329], [2333], [2337], [2341], [2345], [2349], [2353], [2357], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2584], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-11-12 19:42:36,261 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:42:36,262 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:42:37,285 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:42:37,286 INFO L272 AbstractInterpreter]: Visited 196 different actions 385 times. Merged at 4 different actions 4 times. Never widened. Performed 5933 root evaluator evaluations with a maximum evaluation depth of 6. Performed 5933 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-12 19:42:37,325 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:42:37,326 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 19:42:39,539 INFO L227 lantSequenceWeakener]: Weakened 53 states. On average, predicates are now at 77.44% of their original sizes. [2018-11-12 19:42:39,539 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:42:41,875 INFO L415 sIntCurrentIteration]: We unified 411 AI predicates to 411 [2018-11-12 19:42:41,876 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 19:42:41,876 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:42:41,876 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [16] imperfect sequences [11] total 25 [2018-11-12 19:42:41,876 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:42:41,877 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-12 19:42:41,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-12 19:42:41,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2018-11-12 19:42:41,878 INFO L87 Difference]: Start difference. First operand 8831 states and 11532 transitions. Second operand 16 states. [2018-11-12 19:43:04,010 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:43:46,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:43:46,812 INFO L93 Difference]: Finished difference Result 21092 states and 27517 transitions. [2018-11-12 19:43:46,812 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-11-12 19:43:46,812 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 412 [2018-11-12 19:43:46,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:43:46,860 INFO L225 Difference]: With dead ends: 21092 [2018-11-12 19:43:46,860 INFO L226 Difference]: Without dead ends: 12970 [2018-11-12 19:43:46,886 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 422 GetRequests, 397 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=143, Invalid=559, Unknown=0, NotChecked=0, Total=702 [2018-11-12 19:43:46,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12970 states. [2018-11-12 19:43:47,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12970 to 12957. [2018-11-12 19:43:47,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12957 states. [2018-11-12 19:43:47,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12957 states to 12957 states and 15724 transitions. [2018-11-12 19:43:47,176 INFO L78 Accepts]: Start accepts. Automaton has 12957 states and 15724 transitions. Word has length 412 [2018-11-12 19:43:47,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:43:47,176 INFO L480 AbstractCegarLoop]: Abstraction has 12957 states and 15724 transitions. [2018-11-12 19:43:47,177 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-11-12 19:43:47,177 INFO L276 IsEmpty]: Start isEmpty. Operand 12957 states and 15724 transitions. [2018-11-12 19:43:47,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 555 [2018-11-12 19:43:47,197 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:43:47,197 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, 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, 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] [2018-11-12 19:43:47,198 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:43:47,198 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:43:47,198 INFO L82 PathProgramCache]: Analyzing trace with hash 24807167, now seen corresponding path program 1 times [2018-11-12 19:43:47,199 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:43:47,200 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:43:47,200 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:43:47,200 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:43:47,200 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:43:47,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:43:47,632 WARN L179 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 19:43:57,211 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 171 proven. 191 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2018-11-12 19:43:57,212 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:43:57,212 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:43:57,212 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 555 with the following transitions: [2018-11-12 19:43:57,212 INFO L202 CegarAbsIntRunner]: [0], [1], [740], [744], [748], [752], [756], [760], [764], [768], [772], [776], [780], [784], [788], [792], [796], [800], [804], [808], [812], [816], [820], [824], [828], [832], [836], [840], [844], [848], [852], [856], [860], [864], [868], [872], [876], [879], [1623], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1839], [1847], [1855], [1863], [1871], [1879], [1887], [1895], [1903], [1911], [1919], [1927], [1935], [1943], [1951], [1959], [1967], [1975], [1983], [1991], [1999], [2007], [2015], [2019], [2021], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2117], [2121], [2124], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2200], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2269], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2329], [2333], [2337], [2341], [2345], [2349], [2353], [2357], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2585], [2589], [2593], [2597], [2601], [2605], [2609], [2613], [2617], [2621], [2625], [2629], [2633], [2637], [2641], [2645], [2649], [2653], [2657], [2661], [2665], [2669], [2673], [2677], [2681], [2685], [2689], [2693], [2697], [2701], [2705], [2709], [2713], [2717], [2721], [2725], [2729], [2733], [2737], [2741], [2745], [2749], [2753], [2757], [2761], [2765], [2769], [2773], [2777], [2781], [2785], [2789], [2793], [2797], [2801], [2805], [2809], [2813], [2817], [2821], [2825], [2829], [2833], [2837], [2841], [2845], [2849], [2853], [2857], [2861], [2865], [2869], [2873], [2877], [2881], [2885], [2889], [2893], [2897], [2901], [2905], [2909], [2913], [2917], [2921], [2925], [2929], [2933], [2937], [2941], [2945], [2949], [2953], [2957], [2961], [2965], [2969], [2973], [2977], [2981], [2985], [2989], [2993], [2995], [2996], [3000], [3004], [3010], [3014], [3016], [3023], [3024], [3025], [3026], [3027], [3029], [3030] [2018-11-12 19:43:57,221 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:43:57,221 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:43:57,796 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:43:57,797 INFO L272 AbstractInterpreter]: Visited 338 different actions 669 times. Merged at 4 different actions 4 times. Never widened. Performed 7841 root evaluator evaluations with a maximum evaluation depth of 6. Performed 7841 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-12 19:43:57,801 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:43:57,801 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 19:43:58,622 INFO L227 lantSequenceWeakener]: Weakened 101 states. On average, predicates are now at 78.08% of their original sizes. [2018-11-12 19:43:58,622 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:43:59,580 INFO L415 sIntCurrentIteration]: We unified 553 AI predicates to 553 [2018-11-12 19:43:59,580 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 19:43:59,580 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:43:59,580 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [21] imperfect sequences [8] total 27 [2018-11-12 19:43:59,581 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:43:59,581 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-11-12 19:43:59,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-11-12 19:43:59,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=337, Unknown=0, NotChecked=0, Total=420 [2018-11-12 19:43:59,582 INFO L87 Difference]: Start difference. First operand 12957 states and 15724 transitions. Second operand 21 states. [2018-11-12 19:44:24,952 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-11-12 19:44:40,381 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-11-12 19:44:40,381 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-12 19:44:40,387 WARN L205 ceAbstractionStarter]: Timeout [2018-11-12 19:44:40,387 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 07:44:40 BoogieIcfgContainer [2018-11-12 19:44:40,387 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-12 19:44:40,388 INFO L168 Benchmark]: Toolchain (without parser) took 214482.39 ms. Allocated memory was 1.5 GB in the beginning and 5.6 GB in the end (delta: 4.1 GB). Free memory was 1.4 GB in the beginning and 3.8 GB in the end (delta: -2.4 GB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2018-11-12 19:44:40,389 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-12 19:44:40,390 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1757.30 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: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. [2018-11-12 19:44:40,390 INFO L168 Benchmark]: Boogie Procedure Inliner took 278.53 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 769.7 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -963.0 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-11-12 19:44:40,391 INFO L168 Benchmark]: Boogie Preprocessor took 231.15 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: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. [2018-11-12 19:44:40,392 INFO L168 Benchmark]: RCFGBuilder took 7498.10 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 519.8 MB). Peak memory consumption was 519.8 MB. Max. memory is 7.1 GB. [2018-11-12 19:44:40,393 INFO L168 Benchmark]: TraceAbstraction took 204711.73 ms. Allocated memory was 2.3 GB in the beginning and 5.6 GB in the end (delta: 3.3 GB). Free memory was 1.7 GB in the beginning and 3.8 GB in the end (delta: -2.1 GB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-11-12 19:44:40,398 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1757.30 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: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 278.53 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 769.7 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -963.0 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 231.15 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: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 7498.10 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 519.8 MB). Peak memory consumption was 519.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 204711.73 ms. Allocated memory was 2.3 GB in the beginning and 5.6 GB in the end (delta: 3.3 GB). Free memory was 1.7 GB in the beginning and 3.8 GB in the end (delta: -2.1 GB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 174]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 174). Cancelled while BasicCegarLoop was constructing difference of abstraction (12957states) and FLOYD_HOARE automaton (currently 26 states, 21 states before enhancement),while ReachableStatesComputation was computing reachable states (12243 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 775 locations, 1 error locations. TIMEOUT Result, 204.6s OverallTime, 8 OverallIterations, 4 TraceHistogramMax, 180.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2487 SDtfs, 28032 SDslu, 1406 SDs, 0 SdLazy, 43029 SolverSat, 6665 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 75.8s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 1254 GetRequests, 1144 SyntacticMatches, 22 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 352 ImplicationChecksByTransitivity, 4.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12957occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 2.2s AbstIntTime, 3 AbstIntIterations, 3 AbstIntStrong, 0.9976887974417621 AbsIntWeakeningRatio, 0.07912457912457913 AbsIntAvgWeakeningVarsNumRemoved, 13.486531986531986 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 179 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.1s InterpolantComputationTime, 1897 NumberOfCodeBlocks, 1897 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 1889 ConstructedInterpolants, 0 QuantifiedInterpolants, 2973174 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 5 PerfectInterpolantSequences, 773/1202 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown