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/Problem03_label03_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-63daa26 [2018-11-12 17:16:53,786 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-12 17:16:53,788 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-12 17:16:53,808 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-12 17:16:53,808 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-12 17:16:53,810 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-12 17:16:53,811 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-12 17:16:53,814 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-12 17:16:53,818 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-12 17:16:53,825 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-12 17:16:53,826 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-12 17:16:53,826 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-12 17:16:53,829 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-12 17:16:53,830 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-12 17:16:53,831 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-12 17:16:53,832 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-12 17:16:53,836 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-12 17:16:53,839 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-12 17:16:53,843 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-12 17:16:53,848 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-12 17:16:53,849 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-12 17:16:53,851 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-12 17:16:53,855 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-12 17:16:53,856 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-12 17:16:53,856 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-12 17:16:53,860 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-12 17:16:53,861 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-12 17:16:53,863 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-12 17:16:53,864 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-12 17:16:53,867 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-12 17:16:53,867 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-12 17:16:53,868 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-12 17:16:53,868 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-12 17:16:53,868 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-12 17:16:53,869 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-12 17:16:53,871 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-12 17:16:53,872 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 17:16:53,897 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-12 17:16:53,897 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-12 17:16:53,899 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-12 17:16:53,899 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-12 17:16:53,899 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-12 17:16:53,899 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-12 17:16:53,900 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-12 17:16:53,900 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-12 17:16:53,900 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-12 17:16:53,900 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-12 17:16:53,900 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-12 17:16:53,903 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-12 17:16:53,903 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-12 17:16:53,904 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-12 17:16:53,904 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-12 17:16:53,904 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-12 17:16:53,905 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-12 17:16:53,905 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-12 17:16:53,905 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-12 17:16:53,905 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-12 17:16:53,905 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-12 17:16:53,907 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-12 17:16:53,907 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-12 17:16:53,908 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-12 17:16:53,908 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-12 17:16:53,908 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 17:16:53,908 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-12 17:16:53,908 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-12 17:16:53,909 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-12 17:16:53,909 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-12 17:16:53,909 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-12 17:16:53,910 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-12 17:16:53,910 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-12 17:16:53,910 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-12 17:16:53,910 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-12 17:16:53,980 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-12 17:16:53,996 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-12 17:16:54,001 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-12 17:16:54,002 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-12 17:16:54,003 INFO L276 PluginConnector]: CDTParser initialized [2018-11-12 17:16:54,004 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label03_true-unreach-call.c [2018-11-12 17:16:54,071 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40d88f058/e1bba494e7dd4c03a7e58482f10a0b2a/FLAG65fbcda36 [2018-11-12 17:16:54,781 INFO L298 CDTParser]: Found 1 translation units. [2018-11-12 17:16:54,782 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label03_true-unreach-call.c [2018-11-12 17:16:54,803 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40d88f058/e1bba494e7dd4c03a7e58482f10a0b2a/FLAG65fbcda36 [2018-11-12 17:16:54,818 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40d88f058/e1bba494e7dd4c03a7e58482f10a0b2a [2018-11-12 17:16:54,829 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-12 17:16:54,832 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-12 17:16:54,833 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-12 17:16:54,833 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-12 17:16:54,838 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-12 17:16:54,839 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 05:16:54" (1/1) ... [2018-11-12 17:16:54,843 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17cd8e9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:16:54, skipping insertion in model container [2018-11-12 17:16:54,843 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 05:16:54" (1/1) ... [2018-11-12 17:16:54,854 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-12 17:16:54,948 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-12 17:16:55,653 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 17:16:55,658 INFO L189 MainTranslator]: Completed pre-run [2018-11-12 17:16:55,876 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 17:16:55,908 INFO L193 MainTranslator]: Completed translation [2018-11-12 17:16:55,908 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:16:55 WrapperNode [2018-11-12 17:16:55,908 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-12 17:16:55,909 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-12 17:16:55,910 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-12 17:16:55,910 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-12 17:16:55,921 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:16:55" (1/1) ... [2018-11-12 17:16:56,097 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:16:55" (1/1) ... [2018-11-12 17:16:56,107 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-12 17:16:56,108 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-12 17:16:56,108 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-12 17:16:56,108 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-12 17:16:56,120 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:16:55" (1/1) ... [2018-11-12 17:16:56,120 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:16:55" (1/1) ... [2018-11-12 17:16:56,130 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:16:55" (1/1) ... [2018-11-12 17:16:56,131 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:16:55" (1/1) ... [2018-11-12 17:16:56,212 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:16:55" (1/1) ... [2018-11-12 17:16:56,242 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:16:55" (1/1) ... [2018-11-12 17:16:56,258 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:16:55" (1/1) ... [2018-11-12 17:16:56,268 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-12 17:16:56,268 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-12 17:16:56,268 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-12 17:16:56,268 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-12 17:16:56,269 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:16:55" (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 17:16:56,325 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-12 17:16:56,325 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-12 17:16:56,325 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-12 17:16:56,325 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-12 17:16:56,326 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-12 17:16:56,326 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-12 17:16:56,326 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-12 17:16:56,326 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-12 17:16:56,326 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-12 17:17:02,010 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-12 17:17:02,011 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 05:17:02 BoogieIcfgContainer [2018-11-12 17:17:02,011 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-12 17:17:02,015 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-12 17:17:02,015 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-12 17:17:02,019 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-12 17:17:02,020 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 05:16:54" (1/3) ... [2018-11-12 17:17:02,021 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@947a482 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 05:17:02, skipping insertion in model container [2018-11-12 17:17:02,021 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:16:55" (2/3) ... [2018-11-12 17:17:02,021 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@947a482 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 05:17:02, skipping insertion in model container [2018-11-12 17:17:02,021 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 05:17:02" (3/3) ... [2018-11-12 17:17:02,024 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label03_true-unreach-call.c [2018-11-12 17:17:02,035 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-12 17:17:02,045 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-12 17:17:02,064 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-12 17:17:02,112 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-12 17:17:02,112 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-12 17:17:02,112 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-12 17:17:02,112 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-12 17:17:02,112 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-12 17:17:02,113 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-12 17:17:02,113 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-12 17:17:02,113 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-12 17:17:02,153 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2018-11-12 17:17:02,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2018-11-12 17:17:02,173 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 17:17:02,174 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:17:02,177 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 17:17:02,183 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:17:02,184 INFO L82 PathProgramCache]: Analyzing trace with hash 1304680716, now seen corresponding path program 1 times [2018-11-12 17:17:02,186 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 17:17:02,237 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:17:02,238 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:17:02,238 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:17:02,238 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 17:17:02,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:17:03,036 WARN L179 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 17:17:03,230 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 17:17:03,233 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 17:17:03,233 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-12 17:17:03,234 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 17:17:03,241 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-12 17:17:03,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-12 17:17:03,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 17:17:03,262 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 3 states. [2018-11-12 17:17:05,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 17:17:05,547 INFO L93 Difference]: Finished difference Result 845 states and 1487 transitions. [2018-11-12 17:17:05,549 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-12 17:17:05,550 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 171 [2018-11-12 17:17:05,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 17:17:05,574 INFO L225 Difference]: With dead ends: 845 [2018-11-12 17:17:05,574 INFO L226 Difference]: Without dead ends: 531 [2018-11-12 17:17:05,582 INFO L604 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 [2018-11-12 17:17:05,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2018-11-12 17:17:05,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 530. [2018-11-12 17:17:05,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 530 states. [2018-11-12 17:17:05,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 869 transitions. [2018-11-12 17:17:05,707 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 869 transitions. Word has length 171 [2018-11-12 17:17:05,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 17:17:05,708 INFO L480 AbstractCegarLoop]: Abstraction has 530 states and 869 transitions. [2018-11-12 17:17:05,708 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-12 17:17:05,709 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 869 transitions. [2018-11-12 17:17:05,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2018-11-12 17:17:05,716 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 17:17:05,717 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-12 17:17:05,717 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 17:17:05,717 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:17:05,718 INFO L82 PathProgramCache]: Analyzing trace with hash 211800901, now seen corresponding path program 1 times [2018-11-12 17:17:05,718 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 17:17:05,719 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:17:05,719 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:17:05,719 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:17:05,720 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 17:17:05,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:17:06,068 WARN L179 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-11-12 17:17:06,331 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 17:17:06,331 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 17:17:06,332 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 17:17:06,332 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 17:17:06,334 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 17:17:06,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 17:17:06,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 17:17:06,335 INFO L87 Difference]: Start difference. First operand 530 states and 869 transitions. Second operand 6 states. [2018-11-12 17:17:09,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 17:17:09,872 INFO L93 Difference]: Finished difference Result 1599 states and 2688 transitions. [2018-11-12 17:17:09,873 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-12 17:17:09,873 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 181 [2018-11-12 17:17:09,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 17:17:09,886 INFO L225 Difference]: With dead ends: 1599 [2018-11-12 17:17:09,887 INFO L226 Difference]: Without dead ends: 1075 [2018-11-12 17:17:09,891 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-12 17:17:09,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1075 states. [2018-11-12 17:17:09,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1075 to 1034. [2018-11-12 17:17:09,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1034 states. [2018-11-12 17:17:09,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1034 states to 1034 states and 1689 transitions. [2018-11-12 17:17:09,954 INFO L78 Accepts]: Start accepts. Automaton has 1034 states and 1689 transitions. Word has length 181 [2018-11-12 17:17:09,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 17:17:09,955 INFO L480 AbstractCegarLoop]: Abstraction has 1034 states and 1689 transitions. [2018-11-12 17:17:09,955 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 17:17:09,955 INFO L276 IsEmpty]: Start isEmpty. Operand 1034 states and 1689 transitions. [2018-11-12 17:17:09,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2018-11-12 17:17:09,959 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 17:17:09,960 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-12 17:17:09,960 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 17:17:09,960 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:17:09,961 INFO L82 PathProgramCache]: Analyzing trace with hash 1978156296, now seen corresponding path program 1 times [2018-11-12 17:17:09,961 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 17:17:09,962 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:17:09,962 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:17:09,962 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:17:09,962 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 17:17:10,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:17:10,254 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 17:17:10,255 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 17:17:10,255 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-12 17:17:10,255 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 17:17:10,256 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-12 17:17:10,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-12 17:17:10,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 17:17:10,257 INFO L87 Difference]: Start difference. First operand 1034 states and 1689 transitions. Second operand 3 states. [2018-11-12 17:17:12,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 17:17:12,923 INFO L93 Difference]: Finished difference Result 2915 states and 4931 transitions. [2018-11-12 17:17:12,930 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-12 17:17:12,930 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 184 [2018-11-12 17:17:12,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 17:17:12,954 INFO L225 Difference]: With dead ends: 2915 [2018-11-12 17:17:12,955 INFO L226 Difference]: Without dead ends: 1887 [2018-11-12 17:17:12,961 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 17:17:12,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1887 states. [2018-11-12 17:17:13,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1887 to 1880. [2018-11-12 17:17:13,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1880 states. [2018-11-12 17:17:13,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1880 states to 1880 states and 2986 transitions. [2018-11-12 17:17:13,051 INFO L78 Accepts]: Start accepts. Automaton has 1880 states and 2986 transitions. Word has length 184 [2018-11-12 17:17:13,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 17:17:13,052 INFO L480 AbstractCegarLoop]: Abstraction has 1880 states and 2986 transitions. [2018-11-12 17:17:13,052 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-12 17:17:13,052 INFO L276 IsEmpty]: Start isEmpty. Operand 1880 states and 2986 transitions. [2018-11-12 17:17:13,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2018-11-12 17:17:13,059 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 17:17:13,061 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:17:13,061 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 17:17:13,062 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:17:13,062 INFO L82 PathProgramCache]: Analyzing trace with hash 88085177, now seen corresponding path program 1 times [2018-11-12 17:17:13,062 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 17:17:13,063 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:17:13,063 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:17:13,064 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:17:13,064 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 17:17:13,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:17:13,364 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 17:17:13,364 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 17:17:13,365 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 17:17:13,365 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 17:17:13,365 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 17:17:13,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 17:17:13,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 17:17:13,366 INFO L87 Difference]: Start difference. First operand 1880 states and 2986 transitions. Second operand 6 states. [2018-11-12 17:17:15,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 17:17:15,560 INFO L93 Difference]: Finished difference Result 6020 states and 10195 transitions. [2018-11-12 17:17:15,565 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 17:17:15,565 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 191 [2018-11-12 17:17:15,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 17:17:15,593 INFO L225 Difference]: With dead ends: 6020 [2018-11-12 17:17:15,593 INFO L226 Difference]: Without dead ends: 4146 [2018-11-12 17:17:15,605 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 17:17:15,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4146 states. [2018-11-12 17:17:15,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4146 to 4038. [2018-11-12 17:17:15,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4038 states. [2018-11-12 17:17:15,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4038 states to 4038 states and 6154 transitions. [2018-11-12 17:17:15,750 INFO L78 Accepts]: Start accepts. Automaton has 4038 states and 6154 transitions. Word has length 191 [2018-11-12 17:17:15,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 17:17:15,751 INFO L480 AbstractCegarLoop]: Abstraction has 4038 states and 6154 transitions. [2018-11-12 17:17:15,751 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 17:17:15,751 INFO L276 IsEmpty]: Start isEmpty. Operand 4038 states and 6154 transitions. [2018-11-12 17:17:15,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2018-11-12 17:17:15,767 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 17:17:15,767 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-12 17:17:15,767 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 17:17:15,768 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:17:15,768 INFO L82 PathProgramCache]: Analyzing trace with hash -1314408798, now seen corresponding path program 1 times [2018-11-12 17:17:15,768 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 17:17:15,769 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:17:15,769 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:17:15,769 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:17:15,769 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 17:17:15,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:17:16,086 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 41 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 17:17:16,086 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 17:17:16,087 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 17:17:16,088 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 210 with the following transitions: [2018-11-12 17:17:16,090 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [28], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [68], [73], [75], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [829], [831], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-12 17:17:16,162 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 17:17:16,162 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 17:17:17,778 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 17:17:17,780 INFO L272 AbstractInterpreter]: Visited 172 different actions 172 times. Never merged. Never widened. Performed 3128 root evaluator evaluations with a maximum evaluation depth of 6. Performed 3128 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Never found a fixpoint. Largest state had 88 variables. [2018-11-12 17:17:17,821 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:17:17,821 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 17:17:19,229 INFO L227 lantSequenceWeakener]: Weakened 198 states. On average, predicates are now at 71.72% of their original sizes. [2018-11-12 17:17:19,230 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 17:17:20,457 INFO L415 sIntCurrentIteration]: We unified 208 AI predicates to 208 [2018-11-12 17:17:20,458 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 17:17:20,459 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 17:17:20,459 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [15] imperfect sequences [6] total 19 [2018-11-12 17:17:20,459 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 17:17:20,460 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-12 17:17:20,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-12 17:17:20,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2018-11-12 17:17:20,461 INFO L87 Difference]: Start difference. First operand 4038 states and 6154 transitions. Second operand 15 states. [2018-11-12 17:17:34,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 17:17:34,839 INFO L93 Difference]: Finished difference Result 8280 states and 12606 transitions. [2018-11-12 17:17:34,840 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-12 17:17:34,840 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 209 [2018-11-12 17:17:34,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 17:17:34,860 INFO L225 Difference]: With dead ends: 8280 [2018-11-12 17:17:34,860 INFO L226 Difference]: Without dead ends: 4248 [2018-11-12 17:17:34,873 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 211 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=93, Invalid=213, Unknown=0, NotChecked=0, Total=306 [2018-11-12 17:17:34,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4248 states. [2018-11-12 17:17:34,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4248 to 4246. [2018-11-12 17:17:34,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4246 states. [2018-11-12 17:17:34,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4246 states to 4246 states and 6370 transitions. [2018-11-12 17:17:34,980 INFO L78 Accepts]: Start accepts. Automaton has 4246 states and 6370 transitions. Word has length 209 [2018-11-12 17:17:34,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 17:17:34,981 INFO L480 AbstractCegarLoop]: Abstraction has 4246 states and 6370 transitions. [2018-11-12 17:17:34,981 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-11-12 17:17:34,981 INFO L276 IsEmpty]: Start isEmpty. Operand 4246 states and 6370 transitions. [2018-11-12 17:17:34,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2018-11-12 17:17:34,994 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 17:17:34,995 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-12 17:17:34,995 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 17:17:34,995 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:17:34,996 INFO L82 PathProgramCache]: Analyzing trace with hash -628104531, now seen corresponding path program 1 times [2018-11-12 17:17:34,996 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 17:17:34,997 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:17:34,997 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:17:34,997 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:17:34,997 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 17:17:35,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:17:35,487 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 59 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 17:17:35,488 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 17:17:35,488 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 17:17:35,488 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 219 with the following transitions: [2018-11-12 17:17:35,489 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [64], [65], [68], [73], [75], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [829], [831], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-12 17:17:35,519 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 17:17:35,520 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 17:17:38,525 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 17:17:38,525 INFO L272 AbstractInterpreter]: Visited 176 different actions 344 times. Merged at 4 different actions 4 times. Never widened. Performed 7928 root evaluator evaluations with a maximum evaluation depth of 6. Performed 7928 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-11-12 17:17:38,554 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:17:38,555 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 17:17:38,556 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 17:17:38,556 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 17:17:38,575 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:17:38,575 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 17:17:38,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:17:38,801 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 17:17:38,948 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-11-12 17:17:38,949 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 17:17:39,452 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-11-12 17:17:39,484 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-11-12 17:17:39,485 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 7 [2018-11-12 17:17:39,485 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 17:17:39,485 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-12 17:17:39,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-12 17:17:39,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-11-12 17:17:39,487 INFO L87 Difference]: Start difference. First operand 4246 states and 6370 transitions. Second operand 3 states. [2018-11-12 17:17:42,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 17:17:42,563 INFO L93 Difference]: Finished difference Result 12102 states and 18948 transitions. [2018-11-12 17:17:42,564 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-12 17:17:42,564 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 218 [2018-11-12 17:17:42,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 17:17:42,609 INFO L225 Difference]: With dead ends: 12102 [2018-11-12 17:17:42,609 INFO L226 Difference]: Without dead ends: 8070 [2018-11-12 17:17:42,635 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 441 GetRequests, 434 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-11-12 17:17:42,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8070 states. [2018-11-12 17:17:42,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8070 to 8032. [2018-11-12 17:17:42,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8032 states. [2018-11-12 17:17:42,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8032 states to 8032 states and 12234 transitions. [2018-11-12 17:17:42,863 INFO L78 Accepts]: Start accepts. Automaton has 8032 states and 12234 transitions. Word has length 218 [2018-11-12 17:17:42,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 17:17:42,863 INFO L480 AbstractCegarLoop]: Abstraction has 8032 states and 12234 transitions. [2018-11-12 17:17:42,864 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-12 17:17:42,865 INFO L276 IsEmpty]: Start isEmpty. Operand 8032 states and 12234 transitions. [2018-11-12 17:17:42,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2018-11-12 17:17:42,898 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 17:17:42,898 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 17:17:42,899 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 17:17:42,899 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:17:42,899 INFO L82 PathProgramCache]: Analyzing trace with hash 837304473, now seen corresponding path program 1 times [2018-11-12 17:17:42,900 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 17:17:42,900 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:17:42,901 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:17:42,901 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:17:42,901 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 17:17:42,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:17:43,280 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 67 proven. 8 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-11-12 17:17:43,280 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 17:17:43,281 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 17:17:43,282 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 238 with the following transitions: [2018-11-12 17:17:43,282 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [10], [12], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [64], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [115], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [829], [831], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-12 17:17:43,297 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 17:17:43,298 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 17:17:45,166 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 17:17:45,167 INFO L272 AbstractInterpreter]: Visited 177 different actions 346 times. Merged at 4 different actions 4 times. Never widened. Performed 7944 root evaluator evaluations with a maximum evaluation depth of 6. Performed 7944 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-11-12 17:17:45,174 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:17:45,174 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 17:17:45,174 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 17:17:45,174 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 17:17:45,190 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:17:45,190 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 17:17:45,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:17:45,383 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 17:17:45,464 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2018-11-12 17:17:45,464 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 17:17:45,546 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 63 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2018-11-12 17:17:45,568 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-11-12 17:17:45,568 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 4] total 7 [2018-11-12 17:17:45,568 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 17:17:45,568 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-12 17:17:45,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-12 17:17:45,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-11-12 17:17:45,569 INFO L87 Difference]: Start difference. First operand 8032 states and 12234 transitions. Second operand 3 states. [2018-11-12 17:17:46,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 17:17:46,579 INFO L93 Difference]: Finished difference Result 15849 states and 24253 transitions. [2018-11-12 17:17:46,580 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-12 17:17:46,580 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 237 [2018-11-12 17:17:46,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 17:17:46,628 INFO L225 Difference]: With dead ends: 15849 [2018-11-12 17:17:46,628 INFO L226 Difference]: Without dead ends: 8031 [2018-11-12 17:17:46,650 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 478 GetRequests, 473 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-11-12 17:17:46,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8031 states. [2018-11-12 17:17:46,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8031 to 8031. [2018-11-12 17:17:46,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8031 states. [2018-11-12 17:17:46,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8031 states to 8031 states and 12232 transitions. [2018-11-12 17:17:46,876 INFO L78 Accepts]: Start accepts. Automaton has 8031 states and 12232 transitions. Word has length 237 [2018-11-12 17:17:46,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 17:17:46,877 INFO L480 AbstractCegarLoop]: Abstraction has 8031 states and 12232 transitions. [2018-11-12 17:17:46,877 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-12 17:17:46,877 INFO L276 IsEmpty]: Start isEmpty. Operand 8031 states and 12232 transitions. [2018-11-12 17:17:46,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2018-11-12 17:17:46,907 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 17:17:46,907 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2018-11-12 17:17:46,908 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 17:17:46,908 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:17:46,908 INFO L82 PathProgramCache]: Analyzing trace with hash -1948184938, now seen corresponding path program 1 times [2018-11-12 17:17:46,908 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 17:17:46,909 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:17:46,909 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:17:46,910 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:17:46,910 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 17:17:46,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:17:47,420 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 94 proven. 22 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-11-12 17:17:47,420 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 17:17:47,420 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 17:17:47,420 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 252 with the following transitions: [2018-11-12 17:17:47,421 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [64], [65], [68], [73], [75], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [115], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [829], [831], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-12 17:17:47,427 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 17:17:47,428 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 17:17:49,176 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 17:17:49,176 INFO L272 AbstractInterpreter]: Visited 177 different actions 346 times. Merged at 4 different actions 4 times. Never widened. Performed 7938 root evaluator evaluations with a maximum evaluation depth of 6. Performed 7938 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-11-12 17:17:49,185 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:17:49,185 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 17:17:49,185 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 17:17:49,185 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 17:17:49,195 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:17:49,195 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 17:17:49,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:17:49,387 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 17:17:49,565 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 115 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-11-12 17:17:49,565 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 17:17:50,093 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 115 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-11-12 17:17:50,115 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 17:17:50,115 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2018-11-12 17:17:50,116 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 17:17:50,116 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-12 17:17:50,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-12 17:17:50,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-11-12 17:17:50,117 INFO L87 Difference]: Start difference. First operand 8031 states and 12232 transitions. Second operand 9 states. [2018-11-12 17:17:50,401 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-11-12 17:17:54,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 17:17:54,670 INFO L93 Difference]: Finished difference Result 31560 states and 52753 transitions. [2018-11-12 17:17:54,671 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-12 17:17:54,671 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 251 [2018-11-12 17:17:54,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 17:17:54,794 INFO L225 Difference]: With dead ends: 31560 [2018-11-12 17:17:54,795 INFO L226 Difference]: Without dead ends: 23743 [2018-11-12 17:17:54,843 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 518 GetRequests, 502 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2018-11-12 17:17:54,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23743 states. [2018-11-12 17:17:55,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23743 to 23579. [2018-11-12 17:17:55,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23579 states. [2018-11-12 17:17:55,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23579 states to 23579 states and 36877 transitions. [2018-11-12 17:17:55,500 INFO L78 Accepts]: Start accepts. Automaton has 23579 states and 36877 transitions. Word has length 251 [2018-11-12 17:17:55,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 17:17:55,501 INFO L480 AbstractCegarLoop]: Abstraction has 23579 states and 36877 transitions. [2018-11-12 17:17:55,501 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-12 17:17:55,501 INFO L276 IsEmpty]: Start isEmpty. Operand 23579 states and 36877 transitions. [2018-11-12 17:17:55,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2018-11-12 17:17:55,582 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 17:17:55,583 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:17:55,583 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 17:17:55,583 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:17:55,584 INFO L82 PathProgramCache]: Analyzing trace with hash -368197559, now seen corresponding path program 1 times [2018-11-12 17:17:55,584 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 17:17:55,585 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:17:55,585 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:17:55,585 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:17:55,585 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 17:17:55,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:17:55,894 WARN L179 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 17:17:56,349 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 76 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-12 17:17:56,350 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 17:17:56,350 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 17:17:56,350 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 253 with the following transitions: [2018-11-12 17:17:56,350 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [24], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [280], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [829], [831], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-12 17:17:56,356 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 17:17:56,357 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 17:17:58,029 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 17:17:58,029 INFO L272 AbstractInterpreter]: Visited 175 different actions 344 times. Merged at 5 different actions 5 times. Never widened. Performed 9307 root evaluator evaluations with a maximum evaluation depth of 6. Performed 9307 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-11-12 17:17:58,042 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:17:58,042 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 17:17:59,941 INFO L227 lantSequenceWeakener]: Weakened 122 states. On average, predicates are now at 73.6% of their original sizes. [2018-11-12 17:17:59,942 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 17:18:02,608 INFO L415 sIntCurrentIteration]: We unified 251 AI predicates to 251 [2018-11-12 17:18:02,609 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 17:18:02,609 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 17:18:02,610 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [23] imperfect sequences [6] total 27 [2018-11-12 17:18:02,610 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 17:18:02,610 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-11-12 17:18:02,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-11-12 17:18:02,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=402, Unknown=0, NotChecked=0, Total=506 [2018-11-12 17:18:02,611 INFO L87 Difference]: Start difference. First operand 23579 states and 36877 transitions. Second operand 23 states. [2018-11-12 17:19:14,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 17:19:14,932 INFO L93 Difference]: Finished difference Result 48204 states and 75307 transitions. [2018-11-12 17:19:14,932 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-11-12 17:19:14,932 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 252 [2018-11-12 17:19:14,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 17:19:15,016 INFO L225 Difference]: With dead ends: 48204 [2018-11-12 17:19:15,016 INFO L226 Difference]: Without dead ends: 24839 [2018-11-12 17:19:15,058 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 262 GetRequests, 206 SyntacticMatches, 24 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 301 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=240, Invalid=882, Unknown=0, NotChecked=0, Total=1122 [2018-11-12 17:19:15,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24839 states. [2018-11-12 17:19:15,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24839 to 24835. [2018-11-12 17:19:15,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24835 states. [2018-11-12 17:19:15,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24835 states to 24835 states and 38252 transitions. [2018-11-12 17:19:15,586 INFO L78 Accepts]: Start accepts. Automaton has 24835 states and 38252 transitions. Word has length 252 [2018-11-12 17:19:15,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 17:19:15,587 INFO L480 AbstractCegarLoop]: Abstraction has 24835 states and 38252 transitions. [2018-11-12 17:19:15,587 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-11-12 17:19:15,587 INFO L276 IsEmpty]: Start isEmpty. Operand 24835 states and 38252 transitions. [2018-11-12 17:19:15,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2018-11-12 17:19:15,681 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 17:19:15,682 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 17:19:15,682 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 17:19:15,682 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:19:15,682 INFO L82 PathProgramCache]: Analyzing trace with hash 967375626, now seen corresponding path program 1 times [2018-11-12 17:19:15,683 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 17:19:15,683 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:19:15,683 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:19:15,684 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:19:15,684 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 17:19:15,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:19:16,013 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 89 proven. 14 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2018-11-12 17:19:16,014 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 17:19:16,014 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 17:19:16,014 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 258 with the following transitions: [2018-11-12 17:19:16,014 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [8], [12], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [56], [57], [61], [64], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [115], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [829], [831], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-12 17:19:16,021 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 17:19:16,021 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 17:19:17,604 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 17:19:17,604 INFO L272 AbstractInterpreter]: Visited 178 different actions 348 times. Merged at 4 different actions 4 times. Never widened. Performed 7973 root evaluator evaluations with a maximum evaluation depth of 6. Performed 7973 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-11-12 17:19:17,613 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:19:17,613 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 17:19:17,613 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 17:19:17,613 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 17:19:17,623 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:19:17,623 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 17:19:17,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:19:17,832 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 17:19:18,286 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 90 proven. 2 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2018-11-12 17:19:18,287 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 17:19:18,488 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 89 proven. 14 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2018-11-12 17:19:18,511 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 17:19:18,512 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2018-11-12 17:19:18,512 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 17:19:18,512 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-12 17:19:18,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-12 17:19:18,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-11-12 17:19:18,514 INFO L87 Difference]: Start difference. First operand 24835 states and 38252 transitions. Second operand 8 states. [2018-11-12 17:19:23,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 17:19:23,755 INFO L93 Difference]: Finished difference Result 87755 states and 172929 transitions. [2018-11-12 17:19:23,755 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-12 17:19:23,756 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 257 [2018-11-12 17:19:23,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 17:19:24,292 INFO L225 Difference]: With dead ends: 87755 [2018-11-12 17:19:24,292 INFO L226 Difference]: Without dead ends: 64390 [2018-11-12 17:19:24,464 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 528 GetRequests, 514 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=76, Invalid=164, Unknown=0, NotChecked=0, Total=240 [2018-11-12 17:19:24,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64390 states. [2018-11-12 17:19:26,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64390 to 62684. [2018-11-12 17:19:26,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62684 states. [2018-11-12 17:19:26,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62684 states to 62684 states and 101578 transitions. [2018-11-12 17:19:26,586 INFO L78 Accepts]: Start accepts. Automaton has 62684 states and 101578 transitions. Word has length 257 [2018-11-12 17:19:26,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 17:19:26,586 INFO L480 AbstractCegarLoop]: Abstraction has 62684 states and 101578 transitions. [2018-11-12 17:19:26,586 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-12 17:19:26,586 INFO L276 IsEmpty]: Start isEmpty. Operand 62684 states and 101578 transitions. [2018-11-12 17:19:26,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2018-11-12 17:19:26,663 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 17:19:26,663 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:19:26,664 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 17:19:26,664 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:19:26,664 INFO L82 PathProgramCache]: Analyzing trace with hash -1971503759, now seen corresponding path program 1 times [2018-11-12 17:19:26,664 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 17:19:26,665 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:19:26,665 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:19:26,665 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:19:26,665 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 17:19:26,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:19:27,220 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 112 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 17:19:27,220 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 17:19:27,220 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 17:19:27,221 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 272 with the following transitions: [2018-11-12 17:19:27,221 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [64], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [315], [320], [322], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [829], [831], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-12 17:19:27,227 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 17:19:27,227 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 17:19:30,638 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 17:19:30,638 INFO L272 AbstractInterpreter]: Visited 178 different actions 526 times. Merged at 7 different actions 17 times. Never widened. Performed 12513 root evaluator evaluations with a maximum evaluation depth of 6. Performed 12513 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 3 fixpoints after 2 different actions. Largest state had 88 variables. [2018-11-12 17:19:30,647 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:19:30,647 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 17:19:30,647 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 17:19:30,647 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 17:19:30,657 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:19:30,657 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 17:19:30,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:19:30,853 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 17:19:31,065 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 112 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 17:19:31,065 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 17:19:31,408 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 112 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 17:19:31,428 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 17:19:31,429 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2018-11-12 17:19:31,429 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 17:19:31,429 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-12 17:19:31,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-12 17:19:31,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2018-11-12 17:19:31,430 INFO L87 Difference]: Start difference. First operand 62684 states and 101578 transitions. Second operand 10 states. [2018-11-12 17:19:42,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 17:19:42,027 INFO L93 Difference]: Finished difference Result 151290 states and 285101 transitions. [2018-11-12 17:19:42,027 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-11-12 17:19:42,027 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 271 [2018-11-12 17:19:42,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 17:19:42,883 INFO L225 Difference]: With dead ends: 151290 [2018-11-12 17:19:42,884 INFO L226 Difference]: Without dead ends: 90075 [2018-11-12 17:19:43,845 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 620 GetRequests, 562 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1039 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=659, Invalid=2763, Unknown=0, NotChecked=0, Total=3422 [2018-11-12 17:19:43,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90075 states. [2018-11-12 17:19:46,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90075 to 85539. [2018-11-12 17:19:46,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85539 states. [2018-11-12 17:19:46,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85539 states to 85539 states and 129783 transitions. [2018-11-12 17:19:46,627 INFO L78 Accepts]: Start accepts. Automaton has 85539 states and 129783 transitions. Word has length 271 [2018-11-12 17:19:46,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 17:19:46,627 INFO L480 AbstractCegarLoop]: Abstraction has 85539 states and 129783 transitions. [2018-11-12 17:19:46,627 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-12 17:19:46,628 INFO L276 IsEmpty]: Start isEmpty. Operand 85539 states and 129783 transitions. [2018-11-12 17:19:46,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2018-11-12 17:19:46,724 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 17:19:46,725 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 17:19:46,725 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 17:19:46,725 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:19:46,726 INFO L82 PathProgramCache]: Analyzing trace with hash 1501712098, now seen corresponding path program 1 times [2018-11-12 17:19:46,726 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 17:19:46,727 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:19:46,727 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:19:46,727 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:19:46,727 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 17:19:46,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:19:47,369 WARN L179 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-11-12 17:19:47,606 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 130 proven. 32 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-11-12 17:19:47,607 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 17:19:47,607 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 17:19:47,607 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 286 with the following transitions: [2018-11-12 17:19:47,607 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [64], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [115], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [240], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [829], [831], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-12 17:19:47,616 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 17:19:47,617 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 17:19:49,520 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 17:19:49,521 INFO L272 AbstractInterpreter]: Visited 177 different actions 349 times. Merged at 5 different actions 7 times. Never widened. Performed 8743 root evaluator evaluations with a maximum evaluation depth of 6. Performed 8743 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-11-12 17:19:49,528 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:19:49,528 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 17:19:49,528 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 17:19:49,528 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 17:19:49,538 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:19:49,538 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 17:19:49,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:19:49,759 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 17:19:49,886 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 149 proven. 2 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2018-11-12 17:19:49,886 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 17:19:50,187 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 115 proven. 62 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-12 17:19:50,208 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 17:19:50,208 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 8] total 16 [2018-11-12 17:19:50,208 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 17:19:50,209 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-12 17:19:50,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-12 17:19:50,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2018-11-12 17:19:50,210 INFO L87 Difference]: Start difference. First operand 85539 states and 129783 transitions. Second operand 12 states. [2018-11-12 17:20:10,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 17:20:10,204 INFO L93 Difference]: Finished difference Result 312393 states and 524135 transitions. [2018-11-12 17:20:10,205 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2018-11-12 17:20:10,205 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 285 [2018-11-12 17:20:10,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 17:20:11,685 INFO L225 Difference]: With dead ends: 312393 [2018-11-12 17:20:11,685 INFO L226 Difference]: Without dead ends: 228322 [2018-11-12 17:20:12,105 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 734 GetRequests, 639 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3397 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1445, Invalid=7867, Unknown=0, NotChecked=0, Total=9312 [2018-11-12 17:20:12,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228322 states. [2018-11-12 17:20:24,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228322 to 221078. [2018-11-12 17:20:24,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221078 states. [2018-11-12 17:20:25,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221078 states to 221078 states and 319587 transitions. [2018-11-12 17:20:25,504 INFO L78 Accepts]: Start accepts. Automaton has 221078 states and 319587 transitions. Word has length 285 [2018-11-12 17:20:25,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 17:20:25,505 INFO L480 AbstractCegarLoop]: Abstraction has 221078 states and 319587 transitions. [2018-11-12 17:20:25,505 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-12 17:20:25,505 INFO L276 IsEmpty]: Start isEmpty. Operand 221078 states and 319587 transitions. [2018-11-12 17:20:25,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2018-11-12 17:20:25,646 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 17:20:25,646 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-12 17:20:25,647 INFO L423 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 17:20:25,647 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:20:25,647 INFO L82 PathProgramCache]: Analyzing trace with hash 2078743378, now seen corresponding path program 1 times [2018-11-12 17:20:25,647 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 17:20:25,648 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:20:25,648 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:20:25,648 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:20:25,648 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 17:20:25,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:20:25,994 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 154 proven. 14 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2018-11-12 17:20:25,994 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 17:20:25,994 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 17:20:25,995 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 304 with the following transitions: [2018-11-12 17:20:25,995 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [8], [12], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [56], [57], [61], [64], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [115], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [174], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [829], [831], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-12 17:20:26,000 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 17:20:26,000 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 17:20:29,478 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 17:20:29,478 INFO L272 AbstractInterpreter]: Visited 179 different actions 538 times. Merged at 8 different actions 24 times. Never widened. Performed 15480 root evaluator evaluations with a maximum evaluation depth of 6. Performed 15480 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 4 fixpoints after 3 different actions. Largest state had 88 variables. [2018-11-12 17:20:29,485 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:20:29,485 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 17:20:29,485 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 17:20:29,485 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 17:20:29,499 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:20:29,500 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 17:20:29,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:20:29,754 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 17:20:29,833 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 198 proven. 2 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2018-11-12 17:20:29,834 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 17:20:29,949 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 154 proven. 14 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2018-11-12 17:20:29,970 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 17:20:29,970 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2018-11-12 17:20:29,970 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 17:20:29,971 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-12 17:20:29,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-12 17:20:29,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2018-11-12 17:20:29,972 INFO L87 Difference]: Start difference. First operand 221078 states and 319587 transitions. Second operand 8 states. Received shutdown request... [2018-11-12 17:20:32,199 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-11-12 17:20:32,199 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-12 17:20:32,203 WARN L205 ceAbstractionStarter]: Timeout [2018-11-12 17:20:32,203 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 05:20:32 BoogieIcfgContainer [2018-11-12 17:20:32,203 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-12 17:20:32,204 INFO L168 Benchmark]: Toolchain (without parser) took 217374.05 ms. Allocated memory was 1.5 GB in the beginning and 5.2 GB in the end (delta: 3.7 GB). Free memory was 1.4 GB in the beginning and 3.9 GB in the end (delta: -2.4 GB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. [2018-11-12 17:20:32,205 INFO L168 Benchmark]: CDTParser took 0.23 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 17:20:32,205 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1076.18 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: 74.0 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. [2018-11-12 17:20:32,206 INFO L168 Benchmark]: Boogie Procedure Inliner took 197.84 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 762.3 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -878.5 MB). Peak memory consumption was 39.3 MB. Max. memory is 7.1 GB. [2018-11-12 17:20:32,207 INFO L168 Benchmark]: Boogie Preprocessor took 160.34 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-12 17:20:32,208 INFO L168 Benchmark]: RCFGBuilder took 5742.84 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 254.9 MB). Peak memory consumption was 254.9 MB. Max. memory is 7.1 GB. [2018-11-12 17:20:32,208 INFO L168 Benchmark]: TraceAbstraction took 210188.34 ms. Allocated memory was 2.3 GB in the beginning and 5.2 GB in the end (delta: 2.9 GB). Free memory was 2.0 GB in the beginning and 3.9 GB in the end (delta: -1.9 GB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. [2018-11-12 17:20:32,213 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 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 1076.18 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: 74.0 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 197.84 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 762.3 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -878.5 MB). Peak memory consumption was 39.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 160.34 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 5742.84 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 254.9 MB). Peak memory consumption was 254.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 210188.34 ms. Allocated memory was 2.3 GB in the beginning and 5.2 GB in the end (delta: 2.9 GB). Free memory was 2.0 GB in the beginning and 3.9 GB in the end (delta: -1.9 GB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 1527]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 1527). Cancelled while BasicCegarLoop was constructing difference of abstraction (221078states) and FLOYD_HOARE automaton (currently 27 states, 8 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 31 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 312 locations, 1 error locations. TIMEOUT Result, 210.1s OverallTime, 13 OverallIterations, 6 TraceHistogramMax, 149.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3028 SDtfs, 19013 SDslu, 3567 SDs, 0 SdLazy, 33140 SolverSat, 6344 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 86.4s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 4471 GetRequests, 4153 SyntacticMatches, 33 SemanticMatches, 284 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5047 ImplicationChecksByTransitivity, 12.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=221078occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 20.5s AbstIntTime, 9 AbstIntIterations, 2 AbstIntStrong, 0.9992372821505536 AbsIntWeakeningRatio, 0.27450980392156865 AbsIntAvgWeakeningVarsNumRemoved, 31.16557734204793 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 20.4s AutomataMinimizationTime, 12 MinimizatonAttempts, 13851 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.5s SsaConstructionTime, 1.6s SatisfiabilityAnalysisTime, 8.8s InterpolantComputationTime, 4832 NumberOfCodeBlocks, 4832 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 6627 ConstructedInterpolants, 0 QuantifiedInterpolants, 3254698 SizeOfPredicates, 30 NumberOfNonLiveVariables, 8803 ConjunctsInSsa, 45 ConjunctsInUnsatCore, 27 InterpolantComputations, 7 PerfectInterpolantSequences, 3068/3275 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown