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/Problem12_label09_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 20:16:44,912 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 20:16:44,914 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 20:16:44,930 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 20:16:44,930 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 20:16:44,931 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 20:16:44,932 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 20:16:44,934 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 20:16:44,936 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 20:16:44,937 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 20:16:44,938 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 20:16:44,938 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 20:16:44,939 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 20:16:44,940 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 20:16:44,941 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 20:16:44,942 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 20:16:44,943 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 20:16:44,945 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 20:16:44,947 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 20:16:44,948 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 20:16:44,949 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 20:16:44,952 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 20:16:44,954 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 20:16:44,955 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 20:16:44,955 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 20:16:44,957 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 20:16:44,958 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 20:16:44,958 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 20:16:44,961 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 20:16:44,963 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 20:16:44,964 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 20:16:44,964 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 20:16:44,964 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 20:16:44,965 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 20:16:44,966 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 20:16:44,967 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 20:16:44,967 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 20:16:44,993 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 20:16:44,993 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 20:16:44,994 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 20:16:44,994 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 20:16:44,995 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 20:16:44,995 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 20:16:44,996 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-07 20:16:44,996 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 20:16:44,996 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 20:16:44,996 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 20:16:44,996 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 20:16:44,996 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 20:16:44,997 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 20:16:44,997 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 20:16:44,997 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 20:16:44,997 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 20:16:44,998 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 20:16:44,998 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 20:16:44,998 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 20:16:44,998 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 20:16:44,998 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 20:16:45,000 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 20:16:45,000 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 20:16:45,000 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 20:16:45,000 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 20:16:45,001 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 20:16:45,001 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 20:16:45,001 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 20:16:45,001 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 20:16:45,001 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 20:16:45,002 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 20:16:45,002 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 20:16:45,002 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 20:16:45,002 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 20:16:45,002 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 20:16:45,054 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 20:16:45,070 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 20:16:45,074 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 20:16:45,076 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 20:16:45,076 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 20:16:45,077 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label09_true-unreach-call.c [2018-11-07 20:16:45,142 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf7111178/f209b832a00f4bc8b8feaba7d4caf1a1/FLAGf556de866 [2018-11-07 20:16:45,962 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 20:16:45,963 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label09_true-unreach-call.c [2018-11-07 20:16:45,996 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf7111178/f209b832a00f4bc8b8feaba7d4caf1a1/FLAGf556de866 [2018-11-07 20:16:46,016 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf7111178/f209b832a00f4bc8b8feaba7d4caf1a1 [2018-11-07 20:16:46,029 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 20:16:46,031 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 20:16:46,032 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 20:16:46,032 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 20:16:46,038 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 20:16:46,039 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:16:46" (1/1) ... [2018-11-07 20:16:46,042 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e77fec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:16:46, skipping insertion in model container [2018-11-07 20:16:46,042 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:16:46" (1/1) ... [2018-11-07 20:16:46,054 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 20:16:46,203 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 20:16:47,525 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 20:16:47,530 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 20:16:48,261 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 20:16:48,297 INFO L193 MainTranslator]: Completed translation [2018-11-07 20:16:48,298 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:16:48 WrapperNode [2018-11-07 20:16:48,298 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 20:16:48,300 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 20:16:48,300 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 20:16:48,301 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 20:16:48,311 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:16:48" (1/1) ... [2018-11-07 20:16:48,685 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:16:48" (1/1) ... [2018-11-07 20:16:48,694 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 20:16:48,694 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 20:16:48,694 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 20:16:48,695 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 20:16:48,706 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:16:48" (1/1) ... [2018-11-07 20:16:48,707 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:16:48" (1/1) ... [2018-11-07 20:16:48,734 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:16:48" (1/1) ... [2018-11-07 20:16:48,735 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:16:48" (1/1) ... [2018-11-07 20:16:48,821 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:16:48" (1/1) ... [2018-11-07 20:16:48,859 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:16:48" (1/1) ... [2018-11-07 20:16:48,883 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:16:48" (1/1) ... [2018-11-07 20:16:48,907 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 20:16:48,908 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 20:16:48,908 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 20:16:48,908 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 20:16:48,909 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:16:48" (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 20:16:48,985 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 20:16:48,985 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 20:16:48,985 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 20:16:48,986 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-07 20:16:48,986 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-07 20:16:48,986 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 20:16:48,986 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 20:16:48,986 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 20:16:48,987 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 20:16:48,987 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 20:16:48,987 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 20:16:48,987 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 20:16:48,987 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 20:16:48,990 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 20:16:48,991 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 20:16:57,880 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 20:16:57,881 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:16:57 BoogieIcfgContainer [2018-11-07 20:16:57,881 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 20:16:57,882 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 20:16:57,883 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 20:16:57,886 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 20:16:57,887 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 08:16:46" (1/3) ... [2018-11-07 20:16:57,887 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dba3ac6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:16:57, skipping insertion in model container [2018-11-07 20:16:57,888 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:16:48" (2/3) ... [2018-11-07 20:16:57,888 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dba3ac6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:16:57, skipping insertion in model container [2018-11-07 20:16:57,888 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:16:57" (3/3) ... [2018-11-07 20:16:57,890 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label09_true-unreach-call.c [2018-11-07 20:16:57,900 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 20:16:57,909 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 20:16:57,927 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 20:16:57,974 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 20:16:57,975 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 20:16:57,975 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 20:16:57,975 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 20:16:57,975 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 20:16:57,975 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 20:16:57,975 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 20:16:57,975 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 20:16:58,018 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-11-07 20:16:58,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2018-11-07 20:16:58,030 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:16:58,031 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] [2018-11-07 20:16:58,033 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:16:58,039 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:16:58,039 INFO L82 PathProgramCache]: Analyzing trace with hash -539031517, now seen corresponding path program 1 times [2018-11-07 20:16:58,042 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:16:58,100 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:16:58,100 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:16:58,100 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:16:58,100 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:16:58,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:16:58,640 WARN L179 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 20:16:58,763 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 20:16:58,766 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:16:58,766 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 20:16:58,766 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:16:58,772 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 20:16:58,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 20:16:58,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 20:16:58,793 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 3 states. [2018-11-07 20:17:05,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:17:05,648 INFO L93 Difference]: Finished difference Result 2446 states and 4700 transitions. [2018-11-07 20:17:05,648 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 20:17:05,650 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 73 [2018-11-07 20:17:05,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:17:05,681 INFO L225 Difference]: With dead ends: 2446 [2018-11-07 20:17:05,681 INFO L226 Difference]: Without dead ends: 1604 [2018-11-07 20:17:05,691 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 [2018-11-07 20:17:05,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2018-11-07 20:17:05,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1604. [2018-11-07 20:17:05,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-11-07 20:17:05,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 2969 transitions. [2018-11-07 20:17:05,848 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 2969 transitions. Word has length 73 [2018-11-07 20:17:05,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:17:05,850 INFO L480 AbstractCegarLoop]: Abstraction has 1604 states and 2969 transitions. [2018-11-07 20:17:05,850 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 20:17:05,850 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 2969 transitions. [2018-11-07 20:17:05,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2018-11-07 20:17:05,859 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:17:05,860 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 20:17:05,860 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:17:05,860 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:17:05,861 INFO L82 PathProgramCache]: Analyzing trace with hash 1174971868, now seen corresponding path program 1 times [2018-11-07 20:17:05,861 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:17:05,862 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:17:05,862 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:17:05,862 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:17:05,863 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:17:05,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:17:06,174 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:17:06,174 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:17:06,175 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 20:17:06,175 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:17:06,178 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 20:17:06,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 20:17:06,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 20:17:06,179 INFO L87 Difference]: Start difference. First operand 1604 states and 2969 transitions. Second operand 5 states. [2018-11-07 20:17:15,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:17:15,932 INFO L93 Difference]: Finished difference Result 4038 states and 7427 transitions. [2018-11-07 20:17:15,933 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 20:17:15,933 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 147 [2018-11-07 20:17:15,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:17:15,949 INFO L225 Difference]: With dead ends: 4038 [2018-11-07 20:17:15,949 INFO L226 Difference]: Without dead ends: 2440 [2018-11-07 20:17:15,955 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 20:17:15,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2440 states. [2018-11-07 20:17:16,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2440 to 2413. [2018-11-07 20:17:16,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2413 states. [2018-11-07 20:17:16,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2413 states to 2413 states and 4141 transitions. [2018-11-07 20:17:16,031 INFO L78 Accepts]: Start accepts. Automaton has 2413 states and 4141 transitions. Word has length 147 [2018-11-07 20:17:16,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:17:16,032 INFO L480 AbstractCegarLoop]: Abstraction has 2413 states and 4141 transitions. [2018-11-07 20:17:16,032 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 20:17:16,032 INFO L276 IsEmpty]: Start isEmpty. Operand 2413 states and 4141 transitions. [2018-11-07 20:17:16,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2018-11-07 20:17:16,044 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:17:16,044 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 20:17:16,044 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:17:16,044 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:17:16,047 INFO L82 PathProgramCache]: Analyzing trace with hash 710506752, now seen corresponding path program 1 times [2018-11-07 20:17:16,047 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:17:16,048 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:17:16,048 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:17:16,048 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:17:16,049 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:17:16,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:17:16,386 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:17:16,386 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:17:16,387 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 20:17:16,387 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:17:16,388 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 20:17:16,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 20:17:16,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 20:17:16,391 INFO L87 Difference]: Start difference. First operand 2413 states and 4141 transitions. Second operand 4 states. [2018-11-07 20:17:24,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:17:24,639 INFO L93 Difference]: Finished difference Result 9492 states and 16758 transitions. [2018-11-07 20:17:24,639 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 20:17:24,640 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 149 [2018-11-07 20:17:24,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:17:24,683 INFO L225 Difference]: With dead ends: 9492 [2018-11-07 20:17:24,683 INFO L226 Difference]: Without dead ends: 7085 [2018-11-07 20:17:24,697 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 20:17:24,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7085 states. [2018-11-07 20:17:24,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7085 to 7085. [2018-11-07 20:17:24,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7085 states. [2018-11-07 20:17:24,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7085 states to 7085 states and 11755 transitions. [2018-11-07 20:17:24,905 INFO L78 Accepts]: Start accepts. Automaton has 7085 states and 11755 transitions. Word has length 149 [2018-11-07 20:17:24,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:17:24,906 INFO L480 AbstractCegarLoop]: Abstraction has 7085 states and 11755 transitions. [2018-11-07 20:17:24,906 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 20:17:24,906 INFO L276 IsEmpty]: Start isEmpty. Operand 7085 states and 11755 transitions. [2018-11-07 20:17:24,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-11-07 20:17:24,913 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:17:24,914 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 20:17:24,914 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:17:24,914 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:17:24,914 INFO L82 PathProgramCache]: Analyzing trace with hash 2064727429, now seen corresponding path program 1 times [2018-11-07 20:17:24,914 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:17:24,915 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:17:24,916 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:17:24,916 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:17:24,916 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:17:24,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:17:25,308 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:17:25,308 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:17:25,309 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 20:17:25,309 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:17:25,309 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 20:17:25,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 20:17:25,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 20:17:25,310 INFO L87 Difference]: Start difference. First operand 7085 states and 11755 transitions. Second operand 6 states. [2018-11-07 20:17:31,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:17:31,357 INFO L93 Difference]: Finished difference Result 16634 states and 27837 transitions. [2018-11-07 20:17:31,360 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 20:17:31,360 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 176 [2018-11-07 20:17:31,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:17:31,410 INFO L225 Difference]: With dead ends: 16634 [2018-11-07 20:17:31,410 INFO L226 Difference]: Without dead ends: 9555 [2018-11-07 20:17:31,436 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 [2018-11-07 20:17:31,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9555 states. [2018-11-07 20:17:31,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9555 to 9513. [2018-11-07 20:17:31,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9513 states. [2018-11-07 20:17:31,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9513 states to 9513 states and 14979 transitions. [2018-11-07 20:17:31,687 INFO L78 Accepts]: Start accepts. Automaton has 9513 states and 14979 transitions. Word has length 176 [2018-11-07 20:17:31,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:17:31,688 INFO L480 AbstractCegarLoop]: Abstraction has 9513 states and 14979 transitions. [2018-11-07 20:17:31,688 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 20:17:31,688 INFO L276 IsEmpty]: Start isEmpty. Operand 9513 states and 14979 transitions. [2018-11-07 20:17:31,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2018-11-07 20:17:31,704 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:17:31,704 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-07 20:17:31,705 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:17:31,705 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:17:31,705 INFO L82 PathProgramCache]: Analyzing trace with hash -907554919, now seen corresponding path program 1 times [2018-11-07 20:17:31,705 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:17:31,706 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:17:31,707 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:17:31,707 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:17:31,707 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:17:31,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:17:31,971 WARN L179 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 20:17:32,087 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 132 proven. 69 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 20:17:32,087 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:17:32,087 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:17:32,088 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 240 with the following transitions: [2018-11-07 20:17:32,091 INFO L202 CegarAbsIntRunner]: [0], [1], [1868], [1875], [1883], [1891], [1899], [1907], [1915], [1923], [1931], [1939], [1947], [1955], [1963], [1971], [1979], [1987], [1995], [2003], [2011], [2019], [2027], [2035], [2043], [2051], [2059], [2067], [2075], [2083], [2091], [2099], [2107], [2115], [2123], [2131], [2139], [2147], [2155], [2163], [2171], [2179], [2187], [2195], [2203], [2211], [2219], [2227], [2235], [2243], [2251], [2259], [2267], [2275], [2283], [2291], [2299], [2307], [2315], [2323], [2331], [2339], [2347], [2351], [2353], [2356], [2361], [2365], [2369], [2373], [2376], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2448], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-11-07 20:17:32,140 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:17:32,141 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:17:32,706 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:17:32,708 INFO L272 AbstractInterpreter]: Visited 97 different actions 97 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-11-07 20:17:32,761 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:17:32,761 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:17:33,560 INFO L227 lantSequenceWeakener]: Weakened 230 states. On average, predicates are now at 75.92% of their original sizes. [2018-11-07 20:17:33,561 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:17:34,046 INFO L415 sIntCurrentIteration]: We unified 238 AI predicates to 238 [2018-11-07 20:17:34,046 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:17:34,051 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:17:34,051 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 12 [2018-11-07 20:17:34,051 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:17:34,052 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-07 20:17:34,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-07 20:17:34,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-11-07 20:17:34,053 INFO L87 Difference]: Start difference. First operand 9513 states and 14979 transitions. Second operand 8 states. [2018-11-07 20:17:40,265 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:18:03,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:18:03,597 INFO L93 Difference]: Finished difference Result 19790 states and 31161 transitions. [2018-11-07 20:18:03,597 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 20:18:03,598 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 239 [2018-11-07 20:18:03,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:18:03,635 INFO L225 Difference]: With dead ends: 19790 [2018-11-07 20:18:03,635 INFO L226 Difference]: Without dead ends: 10283 [2018-11-07 20:18:03,667 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 240 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-11-07 20:18:03,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10283 states. [2018-11-07 20:18:03,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10283 to 10281. [2018-11-07 20:18:03,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10281 states. [2018-11-07 20:18:03,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10281 states to 10281 states and 15760 transitions. [2018-11-07 20:18:03,952 INFO L78 Accepts]: Start accepts. Automaton has 10281 states and 15760 transitions. Word has length 239 [2018-11-07 20:18:03,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:18:03,953 INFO L480 AbstractCegarLoop]: Abstraction has 10281 states and 15760 transitions. [2018-11-07 20:18:03,953 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-07 20:18:03,953 INFO L276 IsEmpty]: Start isEmpty. Operand 10281 states and 15760 transitions. [2018-11-07 20:18:03,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2018-11-07 20:18:03,968 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:18:03,968 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-07 20:18:03,969 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:18:03,969 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:18:03,969 INFO L82 PathProgramCache]: Analyzing trace with hash 851544685, now seen corresponding path program 1 times [2018-11-07 20:18:03,969 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:18:03,970 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:18:03,970 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:18:03,970 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:18:03,971 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:18:04,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:18:04,587 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 135 proven. 67 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-07 20:18:04,587 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:18:04,588 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:18:04,588 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 298 with the following transitions: [2018-11-07 20:18:04,589 INFO L202 CegarAbsIntRunner]: [0], [1], [1868], [1875], [1883], [1891], [1899], [1907], [1915], [1923], [1931], [1939], [1947], [1955], [1963], [1971], [1979], [1987], [1995], [2003], [2011], [2019], [2027], [2035], [2043], [2051], [2059], [2067], [2075], [2083], [2091], [2099], [2107], [2115], [2123], [2131], [2139], [2147], [2155], [2163], [2171], [2179], [2187], [2195], [2203], [2211], [2219], [2227], [2235], [2243], [2251], [2259], [2267], [2275], [2283], [2291], [2299], [2307], [2315], [2323], [2331], [2339], [2347], [2351], [2353], [2356], [2361], [2365], [2369], [2373], [2377], [2381], [2384], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2585], [2589], [2593], [2597], [2601], [2605], [2609], [2613], [2617], [2621], [2625], [2629], [2633], [2637], [2641], [2645], [2649], [2653], [2657], [2661], [2665], [2669], [2672], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-11-07 20:18:04,598 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:18:04,598 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:18:04,957 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:18:04,958 INFO L272 AbstractInterpreter]: Visited 156 different actions 305 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-11-07 20:18:05,001 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:18:05,002 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:18:05,498 INFO L227 lantSequenceWeakener]: Weakened 294 states. On average, predicates are now at 75.76% of their original sizes. [2018-11-07 20:18:05,498 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:18:06,496 INFO L415 sIntCurrentIteration]: We unified 296 AI predicates to 296 [2018-11-07 20:18:06,497 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:18:06,497 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:18:06,497 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [6] total 15 [2018-11-07 20:18:06,497 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:18:06,498 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-07 20:18:06,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-07 20:18:06,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-11-07 20:18:06,499 INFO L87 Difference]: Start difference. First operand 10281 states and 15760 transitions. Second operand 11 states. [2018-11-07 20:18:09,751 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:18:46,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:18:46,733 INFO L93 Difference]: Finished difference Result 21330 states and 33039 transitions. [2018-11-07 20:18:46,734 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-07 20:18:46,734 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 297 [2018-11-07 20:18:46,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:18:46,764 INFO L225 Difference]: With dead ends: 21330 [2018-11-07 20:18:46,765 INFO L226 Difference]: Without dead ends: 10283 [2018-11-07 20:18:46,794 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 305 GetRequests, 287 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=98, Invalid=282, Unknown=0, NotChecked=0, Total=380 [2018-11-07 20:18:46,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10283 states. [2018-11-07 20:18:46,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10283 to 10281. [2018-11-07 20:18:46,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10281 states. [2018-11-07 20:18:46,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10281 states to 10281 states and 15758 transitions. [2018-11-07 20:18:46,990 INFO L78 Accepts]: Start accepts. Automaton has 10281 states and 15758 transitions. Word has length 297 [2018-11-07 20:18:46,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:18:46,991 INFO L480 AbstractCegarLoop]: Abstraction has 10281 states and 15758 transitions. [2018-11-07 20:18:46,991 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-07 20:18:46,991 INFO L276 IsEmpty]: Start isEmpty. Operand 10281 states and 15758 transitions. [2018-11-07 20:18:47,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2018-11-07 20:18:47,010 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:18:47,010 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:18:47,011 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:18:47,011 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:18:47,011 INFO L82 PathProgramCache]: Analyzing trace with hash -585703518, now seen corresponding path program 1 times [2018-11-07 20:18:47,011 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:18:47,012 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:18:47,012 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:18:47,012 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:18:47,013 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:18:47,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:18:47,398 WARN L179 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 20:18:47,957 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 204 proven. 160 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-11-07 20:18:47,958 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:18:47,958 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:18:47,958 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 386 with the following transitions: [2018-11-07 20:18:47,959 INFO L202 CegarAbsIntRunner]: [0], [1], [1868], [1875], [1883], [1891], [1899], [1907], [1915], [1923], [1931], [1939], [1947], [1955], [1963], [1971], [1979], [1987], [1995], [2003], [2011], [2019], [2027], [2035], [2043], [2051], [2059], [2067], [2075], [2083], [2091], [2099], [2107], [2115], [2123], [2131], [2139], [2147], [2155], [2163], [2171], [2179], [2187], [2195], [2203], [2211], [2219], [2227], [2235], [2243], [2251], [2259], [2267], [2275], [2283], [2291], [2299], [2307], [2315], [2323], [2331], [2339], [2347], [2351], [2353], [2356], [2361], [2365], [2369], [2373], [2376], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2448], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2585], [2589], [2593], [2597], [2601], [2605], [2609], [2613], [2617], [2621], [2625], [2629], [2633], [2637], [2641], [2645], [2649], [2653], [2657], [2661], [2664], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-11-07 20:18:47,964 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:18:47,964 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:18:48,102 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:18:48,333 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:18:48,333 INFO L272 AbstractInterpreter]: Visited 155 different actions 304 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-11-07 20:18:48,339 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:18:48,339 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:18:48,892 INFO L227 lantSequenceWeakener]: Weakened 159 states. On average, predicates are now at 76.73% of their original sizes. [2018-11-07 20:18:48,892 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:18:50,514 INFO L415 sIntCurrentIteration]: We unified 384 AI predicates to 384 [2018-11-07 20:18:50,515 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:18:50,515 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:18:50,515 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [21] imperfect sequences [6] total 25 [2018-11-07 20:18:50,516 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:18:50,516 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-11-07 20:18:50,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-11-07 20:18:50,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2018-11-07 20:18:50,517 INFO L87 Difference]: Start difference. First operand 10281 states and 15758 transitions. Second operand 21 states. [2018-11-07 20:20:04,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:20:04,518 INFO L93 Difference]: Finished difference Result 20858 states and 32365 transitions. [2018-11-07 20:20:04,518 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-11-07 20:20:04,518 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 385 [2018-11-07 20:20:04,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:20:04,557 INFO L225 Difference]: With dead ends: 20858 [2018-11-07 20:20:04,558 INFO L226 Difference]: Without dead ends: 11351 [2018-11-07 20:20:04,575 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 403 GetRequests, 323 SyntacticMatches, 42 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 373 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=296, Invalid=1264, Unknown=0, NotChecked=0, Total=1560 [2018-11-07 20:20:04,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11351 states. [2018-11-07 20:20:04,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11351 to 11346. [2018-11-07 20:20:04,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11346 states. [2018-11-07 20:20:04,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11346 states to 11346 states and 16862 transitions. [2018-11-07 20:20:04,798 INFO L78 Accepts]: Start accepts. Automaton has 11346 states and 16862 transitions. Word has length 385 [2018-11-07 20:20:04,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:20:04,799 INFO L480 AbstractCegarLoop]: Abstraction has 11346 states and 16862 transitions. [2018-11-07 20:20:04,799 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-11-07 20:20:04,799 INFO L276 IsEmpty]: Start isEmpty. Operand 11346 states and 16862 transitions. [2018-11-07 20:20:04,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2018-11-07 20:20:04,817 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:20:04,817 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:20:04,818 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:20:04,818 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:20:04,818 INFO L82 PathProgramCache]: Analyzing trace with hash 1282787359, now seen corresponding path program 1 times [2018-11-07 20:20:04,818 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:20:04,819 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:20:04,819 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:20:04,819 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:20:04,820 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:20:04,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:20:05,161 WARN L179 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 20:20:05,550 INFO L134 CoverageAnalysis]: Checked inductivity of 445 backedges. 204 proven. 167 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-11-07 20:20:05,551 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:20:05,551 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:20:05,551 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 399 with the following transitions: [2018-11-07 20:20:05,551 INFO L202 CegarAbsIntRunner]: [0], [1], [1868], [1875], [1883], [1891], [1899], [1907], [1915], [1923], [1931], [1939], [1947], [1955], [1963], [1971], [1979], [1987], [1995], [2003], [2011], [2019], [2027], [2035], [2043], [2051], [2059], [2067], [2075], [2083], [2091], [2099], [2107], [2115], [2123], [2131], [2139], [2147], [2155], [2163], [2171], [2179], [2187], [2195], [2203], [2211], [2219], [2227], [2235], [2243], [2251], [2259], [2267], [2275], [2283], [2291], [2299], [2307], [2315], [2323], [2331], [2339], [2347], [2351], [2353], [2356], [2361], [2365], [2368], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2492], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2585], [2589], [2593], [2597], [2601], [2605], [2609], [2613], [2617], [2621], [2625], [2629], [2633], [2637], [2641], [2645], [2649], [2653], [2657], [2661], [2665], [2669], [2673], [2677], [2680], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-11-07 20:20:05,556 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:20:05,557 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:20:05,681 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:20:06,007 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:20:06,007 INFO L272 AbstractInterpreter]: Visited 159 different actions 312 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-11-07 20:20:06,043 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:20:06,044 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates Received shutdown request... [2018-11-07 20:20:21,727 INFO L227 lantSequenceWeakener]: Weakened 60 states. On average, predicates are now at 76.18% of their original sizes. [2018-11-07 20:20:21,727 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:20:21,736 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 20:20:21,740 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 20:20:21,740 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 08:20:21 BoogieIcfgContainer [2018-11-07 20:20:21,740 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 20:20:21,741 INFO L168 Benchmark]: Toolchain (without parser) took 215712.02 ms. Allocated memory was 1.6 GB in the beginning and 7.2 GB in the end (delta: 5.7 GB). Free memory was 1.4 GB in the beginning and 4.6 GB in the end (delta: -3.2 GB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. [2018-11-07 20:20:21,743 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.6 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 20:20:21,743 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2266.38 ms. Allocated memory is still 1.6 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. [2018-11-07 20:20:21,744 INFO L168 Benchmark]: Boogie Procedure Inliner took 394.36 ms. Allocated memory was 1.6 GB in the beginning and 2.4 GB in the end (delta: 807.9 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 54.5 MB. Max. memory is 7.1 GB. [2018-11-07 20:20:21,745 INFO L168 Benchmark]: Boogie Preprocessor took 213.61 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: 23.0 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. [2018-11-07 20:20:21,746 INFO L168 Benchmark]: RCFGBuilder took 8973.24 ms. Allocated memory was 2.4 GB in the beginning and 2.5 GB in the end (delta: 138.9 MB). Free memory was 2.3 GB in the beginning and 2.4 GB in the end (delta: -131.1 MB). Peak memory consumption was 654.2 MB. Max. memory is 7.1 GB. [2018-11-07 20:20:21,747 INFO L168 Benchmark]: TraceAbstraction took 203858.24 ms. Allocated memory was 2.5 GB in the beginning and 7.2 GB in the end (delta: 4.7 GB). Free memory was 2.4 GB in the beginning and 4.6 GB in the end (delta: -2.2 GB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. [2018-11-07 20:20:21,753 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.6 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2266.38 ms. Allocated memory is still 1.6 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 394.36 ms. Allocated memory was 1.6 GB in the beginning and 2.4 GB in the end (delta: 807.9 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 54.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 213.61 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: 23.0 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8973.24 ms. Allocated memory was 2.4 GB in the beginning and 2.5 GB in the end (delta: 138.9 MB). Free memory was 2.3 GB in the beginning and 2.4 GB in the end (delta: -131.1 MB). Peak memory consumption was 654.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 203858.24 ms. Allocated memory was 2.5 GB in the beginning and 7.2 GB in the end (delta: 4.7 GB). Free memory was 2.4 GB in the beginning and 4.6 GB in the end (delta: -2.2 GB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 210]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 210). Cancelled while BasicCegarLoop was analyzing trace of length 399 with TraceHistMax 4,while AbsIntCurrentIteration was generating AI predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 3 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 840 locations, 1 error locations. TIMEOUT Result, 203.7s OverallTime, 8 OverallIterations, 4 TraceHistogramMax, 175.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 4479 SDtfs, 18254 SDslu, 1715 SDs, 0 SdLazy, 36294 SolverSat, 5609 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 79.3s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 977 GetRequests, 851 SyntacticMatches, 46 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 434 ImplicationChecksByTransitivity, 4.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11346occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 1.9s AbstIntTime, 4 AbstIntIterations, 4 AbstIntStrong, 0.9976669858493303 AbsIntWeakeningRatio, 0.09125475285171103 AbsIntAvgWeakeningVarsNumRemoved, 17.96121673003802 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.3s AutomataMinimizationTime, 7 MinimizatonAttempts, 78 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.6s InterpolantComputationTime, 1466 NumberOfCodeBlocks, 1466 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 1459 ConstructedInterpolants, 0 QuantifiedInterpolants, 1100907 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 4 PerfectInterpolantSequences, 754/1050 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown