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/Problem13_label12_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 17:53:41,837 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 17:53:41,839 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 17:53:41,854 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 17:53:41,854 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 17:53:41,855 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 17:53:41,856 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 17:53:41,858 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 17:53:41,860 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 17:53:41,861 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 17:53:41,862 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 17:53:41,862 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 17:53:41,863 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 17:53:41,864 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 17:53:41,865 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 17:53:41,866 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 17:53:41,867 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 17:53:41,868 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 17:53:41,870 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 17:53:41,872 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 17:53:41,873 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 17:53:41,875 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 17:53:41,877 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 17:53:41,878 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 17:53:41,878 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 17:53:41,879 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 17:53:41,880 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 17:53:41,881 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 17:53:41,882 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 17:53:41,883 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 17:53:41,883 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 17:53:41,884 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 17:53:41,884 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 17:53:41,884 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 17:53:41,886 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 17:53:41,886 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 17:53:41,887 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 [2018-11-07 17:53:41,903 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 17:53:41,903 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 17:53:41,904 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 17:53:41,904 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 17:53:41,906 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 17:53:41,906 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 17:53:41,906 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-07 17:53:41,906 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 17:53:41,906 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 17:53:41,907 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 17:53:41,907 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 17:53:41,907 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 17:53:41,907 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 17:53:41,908 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 17:53:41,908 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 17:53:41,909 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 17:53:41,909 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 17:53:41,909 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 17:53:41,909 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 17:53:41,909 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 17:53:41,911 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 17:53:41,911 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 17:53:41,911 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 17:53:41,911 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 17:53:41,911 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 17:53:41,912 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 17:53:41,912 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 17:53:41,912 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 17:53:41,912 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 17:53:41,912 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 17:53:41,913 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 17:53:41,913 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 17:53:41,913 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 17:53:41,913 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 17:53:41,913 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 17:53:41,961 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 17:53:41,979 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 17:53:41,984 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 17:53:41,985 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 17:53:41,986 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 17:53:41,986 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label12_false-unreach-call.c [2018-11-07 17:53:42,056 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e25d71b46/e98b802e1bce47ad9aadbb031190ed67/FLAGd2798eb6b [2018-11-07 17:53:42,961 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 17:53:42,962 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label12_false-unreach-call.c [2018-11-07 17:53:43,009 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e25d71b46/e98b802e1bce47ad9aadbb031190ed67/FLAGd2798eb6b [2018-11-07 17:53:43,027 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e25d71b46/e98b802e1bce47ad9aadbb031190ed67 [2018-11-07 17:53:43,039 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 17:53:43,041 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 17:53:43,042 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 17:53:43,042 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 17:53:43,046 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 17:53:43,048 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 05:53:43" (1/1) ... [2018-11-07 17:53:43,051 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c193a73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:53:43, skipping insertion in model container [2018-11-07 17:53:43,051 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 05:53:43" (1/1) ... [2018-11-07 17:53:43,063 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 17:53:43,245 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 17:53:44,734 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 17:53:44,738 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 17:53:45,498 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 17:53:45,539 INFO L193 MainTranslator]: Completed translation [2018-11-07 17:53:45,539 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:53:45 WrapperNode [2018-11-07 17:53:45,540 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 17:53:45,541 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 17:53:45,541 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 17:53:45,541 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 17:53:45,551 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:53:45" (1/1) ... [2018-11-07 17:53:45,949 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:53:45" (1/1) ... [2018-11-07 17:53:45,960 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 17:53:45,961 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 17:53:45,961 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 17:53:45,961 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 17:53:45,973 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:53:45" (1/1) ... [2018-11-07 17:53:45,973 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:53:45" (1/1) ... [2018-11-07 17:53:46,007 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:53:45" (1/1) ... [2018-11-07 17:53:46,008 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:53:45" (1/1) ... [2018-11-07 17:53:46,171 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:53:45" (1/1) ... [2018-11-07 17:53:46,214 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:53:45" (1/1) ... [2018-11-07 17:53:46,271 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:53:45" (1/1) ... [2018-11-07 17:53:46,328 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 17:53:46,328 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 17:53:46,328 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 17:53:46,329 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 17:53:46,330 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:53:45" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 17:53:46,396 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 17:53:46,396 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 17:53:46,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 17:53:46,397 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-07 17:53:46,397 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-07 17:53:46,397 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 17:53:46,397 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 17:53:46,397 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 17:53:46,398 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 17:53:46,398 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 17:53:46,398 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 17:53:46,398 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 17:53:46,398 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 17:53:46,399 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 17:53:46,399 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 17:53:57,919 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 17:53:57,920 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 05:53:57 BoogieIcfgContainer [2018-11-07 17:53:57,920 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 17:53:57,921 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 17:53:57,921 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 17:53:57,924 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 17:53:57,924 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 05:53:43" (1/3) ... [2018-11-07 17:53:57,925 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29284286 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 05:53:57, skipping insertion in model container [2018-11-07 17:53:57,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:53:45" (2/3) ... [2018-11-07 17:53:57,926 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29284286 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 05:53:57, skipping insertion in model container [2018-11-07 17:53:57,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 05:53:57" (3/3) ... [2018-11-07 17:53:57,928 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label12_false-unreach-call.c [2018-11-07 17:53:57,939 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 17:53:57,949 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 17:53:57,966 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 17:53:58,015 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 17:53:58,016 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 17:53:58,016 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 17:53:58,016 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 17:53:58,016 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 17:53:58,016 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 17:53:58,016 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 17:53:58,017 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 17:53:58,065 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-11-07 17:53:58,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-11-07 17:53:58,073 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 17:53:58,076 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 17:53:58,078 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 17:53:58,085 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 17:53:58,086 INFO L82 PathProgramCache]: Analyzing trace with hash 190790252, now seen corresponding path program 1 times [2018-11-07 17:53:58,088 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 17:53:58,142 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:53:58,142 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 17:53:58,142 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:53:58,142 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 17:53:58,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 17:53:58,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 17:53:58,458 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 17:53:58,459 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 17:53:58,459 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 17:53:58,465 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 17:53:58,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 17:53:58,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 17:53:58,484 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 4 states. [2018-11-07 17:54:11,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 17:54:11,788 INFO L93 Difference]: Finished difference Result 3968 states and 7392 transitions. [2018-11-07 17:54:11,795 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 17:54:11,796 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2018-11-07 17:54:11,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 17:54:11,846 INFO L225 Difference]: With dead ends: 3968 [2018-11-07 17:54:11,846 INFO L226 Difference]: Without dead ends: 2842 [2018-11-07 17:54:11,860 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 17:54:11,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2842 states. [2018-11-07 17:54:12,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2842 to 1981. [2018-11-07 17:54:12,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1981 states. [2018-11-07 17:54:12,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1981 states to 1981 states and 3456 transitions. [2018-11-07 17:54:12,071 INFO L78 Accepts]: Start accepts. Automaton has 1981 states and 3456 transitions. Word has length 16 [2018-11-07 17:54:12,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 17:54:12,071 INFO L480 AbstractCegarLoop]: Abstraction has 1981 states and 3456 transitions. [2018-11-07 17:54:12,072 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 17:54:12,072 INFO L276 IsEmpty]: Start isEmpty. Operand 1981 states and 3456 transitions. [2018-11-07 17:54:12,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-11-07 17:54:12,079 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 17:54:12,080 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 17:54:12,080 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 17:54:12,080 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 17:54:12,081 INFO L82 PathProgramCache]: Analyzing trace with hash -1385372312, now seen corresponding path program 1 times [2018-11-07 17:54:12,081 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 17:54:12,083 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:54:12,083 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 17:54:12,083 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:54:12,083 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 17:54:12,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 17:54:12,419 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 17:54:12,419 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 17:54:12,420 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 17:54:12,420 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 17:54:12,422 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 17:54:12,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 17:54:12,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 17:54:12,423 INFO L87 Difference]: Start difference. First operand 1981 states and 3456 transitions. Second operand 5 states. [2018-11-07 17:54:24,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 17:54:24,557 INFO L93 Difference]: Finished difference Result 5673 states and 10081 transitions. [2018-11-07 17:54:24,561 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 17:54:24,561 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 86 [2018-11-07 17:54:24,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 17:54:24,584 INFO L225 Difference]: With dead ends: 5673 [2018-11-07 17:54:24,584 INFO L226 Difference]: Without dead ends: 3698 [2018-11-07 17:54:24,592 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 17:54:24,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3698 states. [2018-11-07 17:54:24,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3698 to 3687. [2018-11-07 17:54:24,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3687 states. [2018-11-07 17:54:24,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3687 states to 3687 states and 5870 transitions. [2018-11-07 17:54:24,714 INFO L78 Accepts]: Start accepts. Automaton has 3687 states and 5870 transitions. Word has length 86 [2018-11-07 17:54:24,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 17:54:24,714 INFO L480 AbstractCegarLoop]: Abstraction has 3687 states and 5870 transitions. [2018-11-07 17:54:24,715 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 17:54:24,715 INFO L276 IsEmpty]: Start isEmpty. Operand 3687 states and 5870 transitions. [2018-11-07 17:54:24,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-11-07 17:54:24,723 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 17:54:24,723 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 17:54:24,724 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 17:54:24,729 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 17:54:24,729 INFO L82 PathProgramCache]: Analyzing trace with hash 440259844, now seen corresponding path program 1 times [2018-11-07 17:54:24,729 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 17:54:24,730 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:54:24,730 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 17:54:24,731 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:54:24,731 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 17:54:24,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 17:54:24,978 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 17:54:24,978 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 17:54:24,978 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 17:54:24,978 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 17:54:24,979 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 17:54:24,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 17:54:24,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 17:54:24,980 INFO L87 Difference]: Start difference. First operand 3687 states and 5870 transitions. Second operand 5 states. [2018-11-07 17:54:34,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 17:54:34,102 INFO L93 Difference]: Finished difference Result 10958 states and 17870 transitions. [2018-11-07 17:54:34,104 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 17:54:34,104 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 88 [2018-11-07 17:54:34,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 17:54:34,140 INFO L225 Difference]: With dead ends: 10958 [2018-11-07 17:54:34,141 INFO L226 Difference]: Without dead ends: 7277 [2018-11-07 17:54:34,155 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 17:54:34,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7277 states. [2018-11-07 17:54:34,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7277 to 7170. [2018-11-07 17:54:34,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7170 states. [2018-11-07 17:54:34,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7170 states to 7170 states and 10523 transitions. [2018-11-07 17:54:34,371 INFO L78 Accepts]: Start accepts. Automaton has 7170 states and 10523 transitions. Word has length 88 [2018-11-07 17:54:34,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 17:54:34,371 INFO L480 AbstractCegarLoop]: Abstraction has 7170 states and 10523 transitions. [2018-11-07 17:54:34,371 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 17:54:34,372 INFO L276 IsEmpty]: Start isEmpty. Operand 7170 states and 10523 transitions. [2018-11-07 17:54:34,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-11-07 17:54:34,375 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 17:54:34,375 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 17:54:34,376 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 17:54:34,376 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 17:54:34,376 INFO L82 PathProgramCache]: Analyzing trace with hash -567644532, now seen corresponding path program 1 times [2018-11-07 17:54:34,376 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 17:54:34,377 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:54:34,377 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 17:54:34,377 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:54:34,378 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 17:54:34,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 17:54:34,598 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 17:54:34,598 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 17:54:34,599 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 17:54:34,599 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 17:54:34,600 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 17:54:34,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 17:54:34,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 17:54:34,600 INFO L87 Difference]: Start difference. First operand 7170 states and 10523 transitions. Second operand 4 states. [2018-11-07 17:54:43,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 17:54:43,947 INFO L93 Difference]: Finished difference Result 27637 states and 43195 transitions. [2018-11-07 17:54:43,952 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 17:54:43,952 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 132 [2018-11-07 17:54:43,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 17:54:44,069 INFO L225 Difference]: With dead ends: 27637 [2018-11-07 17:54:44,070 INFO L226 Difference]: Without dead ends: 20473 [2018-11-07 17:54:44,125 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 17:54:44,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20473 states. [2018-11-07 17:54:44,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20473 to 20436. [2018-11-07 17:54:44,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20436 states. [2018-11-07 17:54:44,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20436 states to 20436 states and 29065 transitions. [2018-11-07 17:54:44,657 INFO L78 Accepts]: Start accepts. Automaton has 20436 states and 29065 transitions. Word has length 132 [2018-11-07 17:54:44,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 17:54:44,658 INFO L480 AbstractCegarLoop]: Abstraction has 20436 states and 29065 transitions. [2018-11-07 17:54:44,658 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 17:54:44,658 INFO L276 IsEmpty]: Start isEmpty. Operand 20436 states and 29065 transitions. [2018-11-07 17:54:44,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2018-11-07 17:54:44,674 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 17:54:44,675 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 17:54:44,675 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 17:54:44,676 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 17:54:44,676 INFO L82 PathProgramCache]: Analyzing trace with hash -2019208682, now seen corresponding path program 1 times [2018-11-07 17:54:44,676 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 17:54:44,677 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:54:44,677 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 17:54:44,678 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:54:44,678 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 17:54:44,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 17:54:45,056 WARN L179 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 17:54:45,489 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 126 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 17:54:45,489 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 17:54:45,490 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 17:54:45,491 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 248 with the following transitions: [2018-11-07 17:54:45,493 INFO L202 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2643], [2651], [2655], [2657], [2660], [2668], [2676], [2684], [2692], [2700], [2708], [2716], [2724], [2732], [2740], [2748], [2756], [2764], [2772], [2780], [2788], [2796], [2804], [2812], [2820], [2828], [2836], [2844], [2852], [2860], [2868], [2876], [2884], [2892], [2900], [2908], [2916], [2924], [2932], [2940], [2948], [2956], [2964], [2972], [2980], [2988], [2996], [3004], [3012], [3020], [3028], [3036], [3044], [3052], [3060], [3068], [3076], [3084], [3092], [3100], [3108], [3116], [3121], [3125], [3129], [3133], [3137], [3148], [3152], [3156], [3160], [3164], [3168], [3179], [3183], [3187], [3191], [3195], [3199], [3203], [3207], [3218], [3222], [3226], [3230], [3234], [3238], [3242], [3246], [3250], [3254], [3258], [3262], [3266], [3270], [3274], [3278], [3282], [3286], [3290], [3294], [3305], [3308], [3309], [3313], [3317], [3321], [3325], [3329], [3333], [3344], [3355], [3358], [3361], [3365], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-11-07 17:54:45,573 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 17:54:45,574 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 17:54:46,551 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 17:54:46,552 INFO L272 AbstractInterpreter]: Visited 124 different actions 124 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-11-07 17:54:46,607 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 17:54:46,607 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 17:54:47,834 INFO L227 lantSequenceWeakener]: Weakened 223 states. On average, predicates are now at 70.89% of their original sizes. [2018-11-07 17:54:47,834 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 17:54:48,367 INFO L415 sIntCurrentIteration]: We unified 246 AI predicates to 246 [2018-11-07 17:54:48,368 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 17:54:48,369 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 17:54:48,369 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [6] total 15 [2018-11-07 17:54:48,369 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 17:54:48,370 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-07 17:54:48,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-07 17:54:48,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-11-07 17:54:48,371 INFO L87 Difference]: Start difference. First operand 20436 states and 29065 transitions. Second operand 11 states. [2018-11-07 17:55:01,265 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 17:56:21,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 17:56:21,145 INFO L93 Difference]: Finished difference Result 41675 states and 58989 transitions. [2018-11-07 17:56:21,145 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-07 17:56:21,145 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 247 [2018-11-07 17:56:21,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 17:56:21,244 INFO L225 Difference]: With dead ends: 41675 [2018-11-07 17:56:21,245 INFO L226 Difference]: Without dead ends: 21245 [2018-11-07 17:56:21,306 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 251 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2018-11-07 17:56:21,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21245 states. [2018-11-07 17:56:21,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21245 to 21240. [2018-11-07 17:56:21,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21240 states. [2018-11-07 17:56:21,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21240 states to 21240 states and 29880 transitions. [2018-11-07 17:56:21,859 INFO L78 Accepts]: Start accepts. Automaton has 21240 states and 29880 transitions. Word has length 247 [2018-11-07 17:56:21,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 17:56:21,859 INFO L480 AbstractCegarLoop]: Abstraction has 21240 states and 29880 transitions. [2018-11-07 17:56:21,859 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-07 17:56:21,860 INFO L276 IsEmpty]: Start isEmpty. Operand 21240 states and 29880 transitions. [2018-11-07 17:56:21,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2018-11-07 17:56:21,869 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 17:56:21,869 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 17:56:21,870 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 17:56:21,870 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 17:56:21,871 INFO L82 PathProgramCache]: Analyzing trace with hash -789102012, now seen corresponding path program 1 times [2018-11-07 17:56:21,871 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 17:56:21,873 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:56:21,873 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 17:56:21,873 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:56:21,873 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 17:56:21,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 17:56:22,492 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 108 proven. 77 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2018-11-07 17:56:22,493 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 17:56:22,493 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 17:56:22,493 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 295 with the following transitions: [2018-11-07 17:56:22,494 INFO L202 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2643], [2651], [2655], [2657], [2660], [2668], [2676], [2684], [2692], [2700], [2708], [2716], [2724], [2732], [2740], [2748], [2756], [2764], [2772], [2780], [2788], [2796], [2804], [2812], [2820], [2828], [2836], [2844], [2852], [2860], [2868], [2876], [2884], [2892], [2900], [2908], [2916], [2924], [2932], [2940], [2948], [2956], [2964], [2972], [2980], [2988], [2996], [3004], [3012], [3020], [3028], [3036], [3044], [3052], [3060], [3068], [3076], [3084], [3092], [3100], [3108], [3116], [3121], [3125], [3129], [3133], [3137], [3148], [3152], [3156], [3159], [3160], [3164], [3168], [3179], [3183], [3187], [3191], [3195], [3199], [3203], [3207], [3218], [3222], [3226], [3230], [3234], [3238], [3242], [3246], [3250], [3254], [3257], [3258], [3262], [3265], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-11-07 17:56:22,501 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 17:56:22,502 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 17:56:23,182 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 17:56:23,183 INFO L272 AbstractInterpreter]: Visited 110 different actions 317 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-11-07 17:56:23,221 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 17:56:23,222 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 17:56:24,032 INFO L227 lantSequenceWeakener]: Weakened 171 states. On average, predicates are now at 70.91% of their original sizes. [2018-11-07 17:56:24,032 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 17:56:24,889 INFO L415 sIntCurrentIteration]: We unified 293 AI predicates to 293 [2018-11-07 17:56:24,890 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 17:56:24,890 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 17:56:24,890 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [15] imperfect sequences [6] total 19 [2018-11-07 17:56:24,890 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 17:56:24,891 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-07 17:56:24,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-07 17:56:24,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2018-11-07 17:56:24,892 INFO L87 Difference]: Start difference. First operand 21240 states and 29880 transitions. Second operand 15 states. [2018-11-07 17:56:35,380 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-11-07 17:57:03,768 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-11-07 17:57:03,768 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 17:57:03,773 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 17:57:03,774 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 05:57:03 BoogieIcfgContainer [2018-11-07 17:57:03,774 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 17:57:03,774 INFO L168 Benchmark]: Toolchain (without parser) took 200735.13 ms. Allocated memory was 1.5 GB in the beginning and 5.9 GB in the end (delta: 4.4 GB). Free memory was 1.4 GB in the beginning and 1.8 GB in the end (delta: -377.2 MB). Peak memory consumption was 4.0 GB. Max. memory is 7.1 GB. [2018-11-07 17:57:03,776 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 17:57:03,776 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2498.09 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. [2018-11-07 17:57:03,777 INFO L168 Benchmark]: Boogie Procedure Inliner took 420.17 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 798.0 MB). Free memory was 1.1 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 67.7 MB. Max. memory is 7.1 GB. [2018-11-07 17:57:03,778 INFO L168 Benchmark]: Boogie Preprocessor took 366.95 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 37.5 MB). Peak memory consumption was 37.5 MB. Max. memory is 7.1 GB. [2018-11-07 17:57:03,779 INFO L168 Benchmark]: RCFGBuilder took 11591.46 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 180.4 MB). Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: -1.9 MB). Peak memory consumption was 682.9 MB. Max. memory is 7.1 GB. [2018-11-07 17:57:03,780 INFO L168 Benchmark]: TraceAbstraction took 185853.11 ms. Allocated memory was 2.5 GB in the beginning and 5.9 GB in the end (delta: 3.4 GB). Free memory was 2.2 GB in the beginning and 1.8 GB in the end (delta: 437.6 MB). Peak memory consumption was 3.8 GB. Max. memory is 7.1 GB. [2018-11-07 17:57:03,786 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2498.09 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 420.17 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 798.0 MB). Free memory was 1.1 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 67.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 366.95 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 37.5 MB). Peak memory consumption was 37.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 11591.46 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 180.4 MB). Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: -1.9 MB). Peak memory consumption was 682.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 185853.11 ms. Allocated memory was 2.5 GB in the beginning and 5.9 GB in the end (delta: 3.4 GB). Free memory was 2.2 GB in the beginning and 1.8 GB in the end (delta: 437.6 MB). Peak memory consumption was 3.8 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 39]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 39). Cancelled while BasicCegarLoop was constructing difference of abstraction (21240states) and FLOYD_HOARE automaton (currently 17 states, 15 states before enhancement),while ReachableStatesComputation was computing reachable states (19016 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 1120 locations, 1 error locations. TIMEOUT Result, 185.7s OverallTime, 6 OverallIterations, 4 TraceHistogramMax, 176.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3761 SDtfs, 15923 SDslu, 3233 SDs, 0 SdLazy, 30859 SolverSat, 5625 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 82.3s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 580 GetRequests, 529 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 2.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21240occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 1.8s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9974198669766143 AbsIntWeakeningRatio, 0.11688311688311688 AbsIntAvgWeakeningVarsNumRemoved, 0.6846011131725418 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.6s AutomataMinimizationTime, 5 MinimizatonAttempts, 1021 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 863 NumberOfCodeBlocks, 863 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 857 ConstructedInterpolants, 0 QuantifiedInterpolants, 538109 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 358/437 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown