java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label09_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 00:46:28,809 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 00:46:28,811 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 00:46:28,824 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 00:46:28,824 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 00:46:28,825 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 00:46:28,827 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 00:46:28,828 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 00:46:28,830 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 00:46:28,831 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 00:46:28,832 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 00:46:28,832 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 00:46:28,833 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 00:46:28,834 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 00:46:28,835 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 00:46:28,836 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 00:46:28,837 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 00:46:28,839 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 00:46:28,841 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 00:46:28,842 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 00:46:28,843 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 00:46:28,845 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 00:46:28,847 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 00:46:28,847 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 00:46:28,848 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 00:46:28,849 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 00:46:28,850 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 00:46:28,851 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 00:46:28,851 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 00:46:28,855 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 00:46:28,855 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 00:46:28,856 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 00:46:28,856 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 00:46:28,856 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 00:46:28,859 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 00:46:28,860 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 00:46:28,861 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-27 00:46:28,879 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 00:46:28,880 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 00:46:28,880 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 00:46:28,881 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 00:46:28,881 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 00:46:28,881 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 00:46:28,881 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 00:46:28,881 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 00:46:28,882 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 00:46:28,882 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 00:46:28,882 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 00:46:28,882 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 00:46:28,883 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 00:46:28,883 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 00:46:28,883 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 00:46:28,884 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 00:46:28,884 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 00:46:28,884 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 00:46:28,884 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 00:46:28,884 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 00:46:28,885 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 00:46:28,885 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 00:46:28,885 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 00:46:28,885 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 00:46:28,885 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 00:46:28,885 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 00:46:28,886 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 00:46:28,886 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 00:46:28,886 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 00:46:28,886 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 00:46:28,886 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 00:46:28,887 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 00:46:28,887 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 00:46:28,887 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 00:46:28,935 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 00:46:28,948 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 00:46:28,952 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 00:46:28,954 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 00:46:28,954 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 00:46:28,955 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label09_true-unreach-call_false-termination.c [2018-10-27 00:46:29,015 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/5b916fe33/9261a6d793524e00ba2bf2ce7b71be9e/FLAGf796b719a [2018-10-27 00:46:29,632 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 00:46:29,633 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem02_label09_true-unreach-call_false-termination.c [2018-10-27 00:46:29,658 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/5b916fe33/9261a6d793524e00ba2bf2ce7b71be9e/FLAGf796b719a [2018-10-27 00:46:29,678 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/5b916fe33/9261a6d793524e00ba2bf2ce7b71be9e [2018-10-27 00:46:29,690 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 00:46:29,692 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 00:46:29,693 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 00:46:29,693 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 00:46:29,697 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 00:46:29,698 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:46:29" (1/1) ... [2018-10-27 00:46:29,702 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ad33cd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:46:29, skipping insertion in model container [2018-10-27 00:46:29,702 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:46:29" (1/1) ... [2018-10-27 00:46:29,713 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 00:46:29,779 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 00:46:30,287 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 00:46:30,292 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 00:46:30,421 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 00:46:30,440 INFO L193 MainTranslator]: Completed translation [2018-10-27 00:46:30,441 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:46:30 WrapperNode [2018-10-27 00:46:30,442 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 00:46:30,443 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 00:46:30,443 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 00:46:30,443 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 00:46:30,454 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:46:30" (1/1) ... [2018-10-27 00:46:30,490 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:46:30" (1/1) ... [2018-10-27 00:46:30,660 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 00:46:30,661 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 00:46:30,661 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 00:46:30,661 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 00:46:30,672 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:46:30" (1/1) ... [2018-10-27 00:46:30,673 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:46:30" (1/1) ... [2018-10-27 00:46:30,677 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:46:30" (1/1) ... [2018-10-27 00:46:30,677 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:46:30" (1/1) ... [2018-10-27 00:46:30,708 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:46:30" (1/1) ... [2018-10-27 00:46:30,720 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:46:30" (1/1) ... [2018-10-27 00:46:30,725 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:46:30" (1/1) ... [2018-10-27 00:46:30,731 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 00:46:30,732 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 00:46:30,732 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 00:46:30,732 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 00:46:30,733 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:46:30" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 00:46:30,806 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 00:46:30,806 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 00:46:30,806 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 00:46:30,807 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 00:46:30,807 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 00:46:30,807 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 00:46:30,807 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 00:46:30,807 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 00:46:34,023 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 00:46:34,024 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:46:34 BoogieIcfgContainer [2018-10-27 00:46:34,024 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 00:46:34,031 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 00:46:34,031 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 00:46:34,037 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 00:46:34,038 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 12:46:29" (1/3) ... [2018-10-27 00:46:34,039 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e43ad2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:46:34, skipping insertion in model container [2018-10-27 00:46:34,041 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:46:30" (2/3) ... [2018-10-27 00:46:34,041 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e43ad2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:46:34, skipping insertion in model container [2018-10-27 00:46:34,042 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:46:34" (3/3) ... [2018-10-27 00:46:34,045 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem02_label09_true-unreach-call_false-termination.c [2018-10-27 00:46:34,057 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 00:46:34,071 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 00:46:34,091 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 00:46:34,143 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 00:46:34,143 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 00:46:34,143 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 00:46:34,144 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 00:46:34,144 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 00:46:34,144 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 00:46:34,144 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 00:46:34,145 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 00:46:34,187 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states. [2018-10-27 00:46:34,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-10-27 00:46:34,207 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:46:34,212 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 00:46:34,214 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:46:34,223 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:46:34,223 INFO L82 PathProgramCache]: Analyzing trace with hash 1669527864, now seen corresponding path program 1 times [2018-10-27 00:46:34,226 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 00:46:34,291 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:46:34,292 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:46:34,292 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:46:34,292 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 00:46:34,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:46:34,971 WARN L179 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 00:46:35,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 00:46:35,115 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 00:46:35,115 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 00:46:35,115 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 00:46:35,122 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 00:46:35,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 00:46:35,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 00:46:35,140 INFO L87 Difference]: Start difference. First operand 237 states. Second operand 3 states. [2018-10-27 00:46:36,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 00:46:36,521 INFO L93 Difference]: Finished difference Result 627 states and 1072 transitions. [2018-10-27 00:46:36,523 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 00:46:36,525 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 128 [2018-10-27 00:46:36,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 00:46:36,546 INFO L225 Difference]: With dead ends: 627 [2018-10-27 00:46:36,546 INFO L226 Difference]: Without dead ends: 388 [2018-10-27 00:46:36,553 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 00:46:36,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2018-10-27 00:46:36,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 383. [2018-10-27 00:46:36,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 383 states. [2018-10-27 00:46:36,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 619 transitions. [2018-10-27 00:46:36,637 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 619 transitions. Word has length 128 [2018-10-27 00:46:36,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 00:46:36,638 INFO L481 AbstractCegarLoop]: Abstraction has 383 states and 619 transitions. [2018-10-27 00:46:36,638 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 00:46:36,638 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 619 transitions. [2018-10-27 00:46:36,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2018-10-27 00:46:36,645 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:46:36,645 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-27 00:46:36,645 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:46:36,646 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:46:36,646 INFO L82 PathProgramCache]: Analyzing trace with hash -91961275, now seen corresponding path program 1 times [2018-10-27 00:46:36,646 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 00:46:36,647 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:46:36,648 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:46:36,648 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:46:36,648 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 00:46:36,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:46:37,134 WARN L179 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2018-10-27 00:46:37,256 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 00:46:37,256 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 00:46:37,256 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-27 00:46:37,257 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 00:46:37,259 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 00:46:37,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 00:46:37,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-27 00:46:37,260 INFO L87 Difference]: Start difference. First operand 383 states and 619 transitions. Second operand 5 states. [2018-10-27 00:46:39,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 00:46:39,086 INFO L93 Difference]: Finished difference Result 905 states and 1519 transitions. [2018-10-27 00:46:39,088 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 00:46:39,088 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 137 [2018-10-27 00:46:39,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 00:46:39,093 INFO L225 Difference]: With dead ends: 905 [2018-10-27 00:46:39,093 INFO L226 Difference]: Without dead ends: 382 [2018-10-27 00:46:39,100 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-27 00:46:39,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2018-10-27 00:46:39,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 382. [2018-10-27 00:46:39,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 382 states. [2018-10-27 00:46:39,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 613 transitions. [2018-10-27 00:46:39,127 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 613 transitions. Word has length 137 [2018-10-27 00:46:39,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 00:46:39,127 INFO L481 AbstractCegarLoop]: Abstraction has 382 states and 613 transitions. [2018-10-27 00:46:39,127 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 00:46:39,128 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 613 transitions. [2018-10-27 00:46:39,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2018-10-27 00:46:39,131 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:46:39,131 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-27 00:46:39,132 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:46:39,132 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:46:39,132 INFO L82 PathProgramCache]: Analyzing trace with hash -2004319935, now seen corresponding path program 1 times [2018-10-27 00:46:39,132 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 00:46:39,133 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:46:39,134 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:46:39,134 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:46:39,134 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 00:46:39,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:46:39,294 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 00:46:39,295 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 00:46:39,295 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 00:46:39,295 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 00:46:39,296 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 00:46:39,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 00:46:39,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 00:46:39,297 INFO L87 Difference]: Start difference. First operand 382 states and 613 transitions. Second operand 6 states. [2018-10-27 00:46:42,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 00:46:42,485 INFO L93 Difference]: Finished difference Result 1241 states and 2101 transitions. [2018-10-27 00:46:42,489 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-27 00:46:42,489 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 139 [2018-10-27 00:46:42,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 00:46:42,500 INFO L225 Difference]: With dead ends: 1241 [2018-10-27 00:46:42,501 INFO L226 Difference]: Without dead ends: 865 [2018-10-27 00:46:42,507 INFO L605 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 [2018-10-27 00:46:42,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 865 states. [2018-10-27 00:46:42,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 865 to 818. [2018-10-27 00:46:42,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 818 states. [2018-10-27 00:46:42,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 818 states to 818 states and 1267 transitions. [2018-10-27 00:46:42,600 INFO L78 Accepts]: Start accepts. Automaton has 818 states and 1267 transitions. Word has length 139 [2018-10-27 00:46:42,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 00:46:42,600 INFO L481 AbstractCegarLoop]: Abstraction has 818 states and 1267 transitions. [2018-10-27 00:46:42,600 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 00:46:42,600 INFO L276 IsEmpty]: Start isEmpty. Operand 818 states and 1267 transitions. [2018-10-27 00:46:42,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-10-27 00:46:42,604 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:46:42,604 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-27 00:46:42,609 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:46:42,609 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:46:42,609 INFO L82 PathProgramCache]: Analyzing trace with hash -430858735, now seen corresponding path program 1 times [2018-10-27 00:46:42,610 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 00:46:42,610 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:46:42,611 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:46:42,611 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:46:42,611 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 00:46:42,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:46:43,062 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 00:46:43,062 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 00:46:43,062 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-10-27 00:46:43,063 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 00:46:43,063 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-27 00:46:43,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-27 00:46:43,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-10-27 00:46:43,064 INFO L87 Difference]: Start difference. First operand 818 states and 1267 transitions. Second operand 7 states. [2018-10-27 00:46:46,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 00:46:46,704 INFO L93 Difference]: Finished difference Result 2617 states and 4252 transitions. [2018-10-27 00:46:46,705 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-27 00:46:46,705 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 142 [2018-10-27 00:46:46,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 00:46:46,721 INFO L225 Difference]: With dead ends: 2617 [2018-10-27 00:46:46,721 INFO L226 Difference]: Without dead ends: 1805 [2018-10-27 00:46:46,727 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2018-10-27 00:46:46,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1805 states. [2018-10-27 00:46:46,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1805 to 1800. [2018-10-27 00:46:46,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1800 states. [2018-10-27 00:46:46,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1800 states to 1800 states and 2733 transitions. [2018-10-27 00:46:46,799 INFO L78 Accepts]: Start accepts. Automaton has 1800 states and 2733 transitions. Word has length 142 [2018-10-27 00:46:46,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 00:46:46,800 INFO L481 AbstractCegarLoop]: Abstraction has 1800 states and 2733 transitions. [2018-10-27 00:46:46,800 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-27 00:46:46,800 INFO L276 IsEmpty]: Start isEmpty. Operand 1800 states and 2733 transitions. [2018-10-27 00:46:46,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2018-10-27 00:46:46,808 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:46:46,808 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-27 00:46:46,808 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:46:46,809 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:46:46,809 INFO L82 PathProgramCache]: Analyzing trace with hash 1196711489, now seen corresponding path program 1 times [2018-10-27 00:46:46,809 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 00:46:46,810 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:46:46,810 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:46:46,810 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:46:46,810 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 00:46:46,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:46:47,000 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 00:46:47,000 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 00:46:47,000 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 00:46:47,001 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 00:46:47,001 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 00:46:47,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 00:46:47,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 00:46:47,002 INFO L87 Difference]: Start difference. First operand 1800 states and 2733 transitions. Second operand 6 states. [2018-10-27 00:46:49,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 00:46:49,111 INFO L93 Difference]: Finished difference Result 4620 states and 7211 transitions. [2018-10-27 00:46:49,120 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 00:46:49,120 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 150 [2018-10-27 00:46:49,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 00:46:49,142 INFO L225 Difference]: With dead ends: 4620 [2018-10-27 00:46:49,142 INFO L226 Difference]: Without dead ends: 2826 [2018-10-27 00:46:49,156 INFO L605 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 [2018-10-27 00:46:49,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2826 states. [2018-10-27 00:46:49,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2826 to 2779. [2018-10-27 00:46:49,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2779 states. [2018-10-27 00:46:49,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2779 states to 2779 states and 4070 transitions. [2018-10-27 00:46:49,286 INFO L78 Accepts]: Start accepts. Automaton has 2779 states and 4070 transitions. Word has length 150 [2018-10-27 00:46:49,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 00:46:49,287 INFO L481 AbstractCegarLoop]: Abstraction has 2779 states and 4070 transitions. [2018-10-27 00:46:49,287 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 00:46:49,287 INFO L276 IsEmpty]: Start isEmpty. Operand 2779 states and 4070 transitions. [2018-10-27 00:46:49,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2018-10-27 00:46:49,299 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:46:49,300 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 00:46:49,300 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:46:49,300 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:46:49,300 INFO L82 PathProgramCache]: Analyzing trace with hash 443735674, now seen corresponding path program 1 times [2018-10-27 00:46:49,301 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 00:46:49,302 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:46:49,302 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:46:49,302 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:46:49,303 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 00:46:49,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:46:49,728 WARN L179 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-10-27 00:46:49,976 WARN L179 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-27 00:46:50,101 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 00:46:50,101 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 00:46:50,102 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-27 00:46:50,102 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 00:46:50,102 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 00:46:50,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 00:46:50,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-27 00:46:50,103 INFO L87 Difference]: Start difference. First operand 2779 states and 4070 transitions. Second operand 5 states. [2018-10-27 00:46:51,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 00:46:51,021 INFO L93 Difference]: Finished difference Result 5671 states and 8370 transitions. [2018-10-27 00:46:51,022 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 00:46:51,022 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 155 [2018-10-27 00:46:51,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 00:46:51,039 INFO L225 Difference]: With dead ends: 5671 [2018-10-27 00:46:51,040 INFO L226 Difference]: Without dead ends: 2750 [2018-10-27 00:46:51,051 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-27 00:46:51,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2750 states. [2018-10-27 00:46:51,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2750 to 2750. [2018-10-27 00:46:51,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2750 states. [2018-10-27 00:46:51,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2750 states to 2750 states and 3975 transitions. [2018-10-27 00:46:51,141 INFO L78 Accepts]: Start accepts. Automaton has 2750 states and 3975 transitions. Word has length 155 [2018-10-27 00:46:51,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 00:46:51,142 INFO L481 AbstractCegarLoop]: Abstraction has 2750 states and 3975 transitions. [2018-10-27 00:46:51,143 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 00:46:51,143 INFO L276 IsEmpty]: Start isEmpty. Operand 2750 states and 3975 transitions. [2018-10-27 00:46:51,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2018-10-27 00:46:51,154 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:46:51,154 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 00:46:51,154 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:46:51,155 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:46:51,158 INFO L82 PathProgramCache]: Analyzing trace with hash -939036357, now seen corresponding path program 1 times [2018-10-27 00:46:51,158 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 00:46:51,159 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:46:51,160 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:46:51,160 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:46:51,160 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 00:46:51,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:46:51,363 WARN L179 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 00:46:51,616 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 31 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-10-27 00:46:51,616 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 00:46:51,616 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 00:46:51,618 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 165 with the following transitions: [2018-10-27 00:46:51,620 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [13], [14], [18], [22], [26], [30], [34], [38], [42], [53], [64], [68], [72], [76], [80], [83], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [152], [156], [160], [171], [175], [179], [183], [187], [191], [195], [199], [210], [214], [218], [222], [233], [237], [241], [245], [249], [253], [257], [268], [272], [283], [287], [298], [309], [313], [317], [321], [325], [329], [333], [344], [348], [352], [356], [360], [364], [368], [372], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [539], [547], [555], [563], [571], [579], [587], [595], [603], [611], [619], [627], [635], [643], [651], [659], [667], [675], [683], [691], [695], [697], [863], [867], [871], [877], [881], [883], [888], [889], [890], [892], [893] [2018-10-27 00:46:51,725 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-27 00:46:51,725 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 00:47:07,765 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 00:47:07,767 INFO L272 AbstractInterpreter]: Visited 129 different actions 129 times. Never merged. Never widened. Never found a fixpoint. Largest state had 38 variables. [2018-10-27 00:47:07,780 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:47:07,780 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 00:47:12,434 INFO L227 lantSequenceWeakener]: Weakened 143 states. On average, predicates are now at 81.5% of their original sizes. [2018-10-27 00:47:12,434 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 00:47:16,301 INFO L415 sIntCurrentIteration]: We unified 163 AI predicates to 163 [2018-10-27 00:47:16,301 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 00:47:16,302 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 00:47:16,303 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [15] imperfect sequences [5] total 18 [2018-10-27 00:47:16,303 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 00:47:16,303 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-27 00:47:16,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-27 00:47:16,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2018-10-27 00:47:16,304 INFO L87 Difference]: Start difference. First operand 2750 states and 3975 transitions. Second operand 15 states. [2018-10-27 00:48:55,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 00:48:55,530 INFO L93 Difference]: Finished difference Result 5792 states and 8388 transitions. [2018-10-27 00:48:55,530 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-27 00:48:55,531 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 164 [2018-10-27 00:48:55,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 00:48:55,545 INFO L225 Difference]: With dead ends: 5792 [2018-10-27 00:48:55,545 INFO L226 Difference]: Without dead ends: 3048 [2018-10-27 00:48:55,554 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 176 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=207, Invalid=549, Unknown=0, NotChecked=0, Total=756 [2018-10-27 00:48:55,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3048 states. [2018-10-27 00:48:55,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3048 to 2895. [2018-10-27 00:48:55,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2895 states. [2018-10-27 00:48:55,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2895 states to 2895 states and 4128 transitions. [2018-10-27 00:48:55,706 INFO L78 Accepts]: Start accepts. Automaton has 2895 states and 4128 transitions. Word has length 164 [2018-10-27 00:48:55,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 00:48:55,707 INFO L481 AbstractCegarLoop]: Abstraction has 2895 states and 4128 transitions. [2018-10-27 00:48:55,707 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-10-27 00:48:55,707 INFO L276 IsEmpty]: Start isEmpty. Operand 2895 states and 4128 transitions. [2018-10-27 00:48:55,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-10-27 00:48:55,717 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:48:55,717 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2018-10-27 00:48:55,718 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:48:55,718 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:48:55,718 INFO L82 PathProgramCache]: Analyzing trace with hash -1140751716, now seen corresponding path program 1 times [2018-10-27 00:48:55,718 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 00:48:55,719 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:48:55,720 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:48:55,720 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:48:55,720 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 00:48:55,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:48:55,958 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 50 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-10-27 00:48:55,958 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 00:48:55,959 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 00:48:55,959 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 175 with the following transitions: [2018-10-27 00:48:55,959 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [9], [10], [13], [14], [18], [22], [26], [30], [34], [38], [42], [53], [64], [68], [72], [76], [80], [83], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [152], [156], [160], [171], [175], [179], [183], [187], [191], [195], [199], [210], [214], [218], [222], [233], [237], [241], [245], [249], [253], [257], [268], [272], [283], [287], [298], [309], [313], [317], [321], [325], [329], [333], [344], [348], [352], [356], [360], [364], [368], [372], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [539], [547], [555], [563], [571], [579], [587], [595], [603], [611], [619], [627], [635], [643], [651], [659], [667], [675], [683], [691], [695], [697], [863], [867], [871], [877], [881], [883], [888], [889], [890], [892], [893] [2018-10-27 00:48:55,966 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-27 00:48:55,966 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 00:49:26,946 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 00:49:26,947 INFO L272 AbstractInterpreter]: Visited 133 different actions 260 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 38 variables. [2018-10-27 00:49:26,956 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:49:26,956 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 00:49:33,048 INFO L227 lantSequenceWeakener]: Weakened 81 states. On average, predicates are now at 82.24% of their original sizes. [2018-10-27 00:49:33,048 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 00:50:07,990 INFO L415 sIntCurrentIteration]: We unified 173 AI predicates to 173 [2018-10-27 00:50:07,991 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 00:50:07,991 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 00:50:07,991 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [21] imperfect sequences [6] total 25 [2018-10-27 00:50:07,992 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 00:50:07,992 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-10-27 00:50:07,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-10-27 00:50:07,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=318, Unknown=0, NotChecked=0, Total=420 [2018-10-27 00:50:07,993 INFO L87 Difference]: Start difference. First operand 2895 states and 4128 transitions. Second operand 21 states. Received shutdown request... [2018-10-27 00:50:40,786 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-27 00:50:40,787 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-27 00:50:40,792 WARN L205 ceAbstractionStarter]: Timeout [2018-10-27 00:50:40,792 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 12:50:40 BoogieIcfgContainer [2018-10-27 00:50:40,792 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 00:50:40,793 INFO L168 Benchmark]: Toolchain (without parser) took 251102.32 ms. Allocated memory was 1.5 GB in the beginning and 4.0 GB in the end (delta: 2.5 GB). Free memory was 1.4 GB in the beginning and 2.8 GB in the end (delta: -1.4 GB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. [2018-10-27 00:50:40,794 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-27 00:50:40,795 INFO L168 Benchmark]: CACSL2BoogieTranslator took 749.18 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-10-27 00:50:40,796 INFO L168 Benchmark]: Boogie Procedure Inliner took 217.73 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 712.0 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -808.5 MB). Peak memory consumption was 18.7 MB. Max. memory is 7.1 GB. [2018-10-27 00:50:40,797 INFO L168 Benchmark]: Boogie Preprocessor took 70.29 ms. Allocated memory is still 2.2 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-27 00:50:40,797 INFO L168 Benchmark]: RCFGBuilder took 3293.00 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 106.2 MB). Peak memory consumption was 106.2 MB. Max. memory is 7.1 GB. [2018-10-27 00:50:40,798 INFO L168 Benchmark]: TraceAbstraction took 246761.68 ms. Allocated memory was 2.2 GB in the beginning and 4.0 GB in the end (delta: 1.8 GB). Free memory was 2.1 GB in the beginning and 2.8 GB in the end (delta: -769.8 MB). Peak memory consumption was 995.0 MB. Max. memory is 7.1 GB. [2018-10-27 00:50:40,802 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 749.18 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 217.73 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 712.0 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -808.5 MB). Peak memory consumption was 18.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 70.29 ms. Allocated memory is still 2.2 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 3293.00 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 106.2 MB). Peak memory consumption was 106.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 246761.68 ms. Allocated memory was 2.2 GB in the beginning and 4.0 GB in the end (delta: 1.8 GB). Free memory was 2.1 GB in the beginning and 2.8 GB in the end (delta: -769.8 MB). Peak memory consumption was 995.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 535]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 535). Cancelled while BasicCegarLoop was constructing difference of abstraction (2895states) and FLOYD_HOARE automaton (currently 16 states, 21 states before enhancement),while ReachableStatesComputation was computing reachable states (30 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 237 locations, 1 error locations. TIMEOUT Result, 246.6s OverallTime, 8 OverallIterations, 4 TraceHistogramMax, 145.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1002 SDtfs, 5436 SDslu, 1112 SDs, 0 SdLazy, 6422 SolverSat, 1304 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 78.6s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 409 GetRequests, 322 SyntacticMatches, 7 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 372 ImplicationChecksByTransitivity, 48.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2895occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 47.1s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9941682754182748 AbsIntWeakeningRatio, 0.22023809523809523 AbsIntAvgWeakeningVarsNumRemoved, 721.4166666666666 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 7 MinimizatonAttempts, 257 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.9s InterpolantComputationTime, 1189 NumberOfCodeBlocks, 1189 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 1181 ConstructedInterpolants, 0 QuantifiedInterpolants, 1011773 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 6 PerfectInterpolantSequences, 163/175 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown