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-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label43_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 09:39:10,856 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 09:39:10,859 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 09:39:10,875 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 09:39:10,875 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 09:39:10,876 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 09:39:10,878 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 09:39:10,880 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 09:39:10,881 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 09:39:10,882 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 09:39:10,883 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 09:39:10,883 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 09:39:10,884 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 09:39:10,885 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 09:39:10,886 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 09:39:10,887 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 09:39:10,888 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 09:39:10,891 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 09:39:10,893 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 09:39:10,895 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 09:39:10,896 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 09:39:10,897 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 09:39:10,900 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 09:39:10,900 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 09:39:10,900 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 09:39:10,901 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 09:39:10,902 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 09:39:10,903 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 09:39:10,904 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 09:39:10,905 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 09:39:10,905 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 09:39:10,909 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-11-07 09:39:10,912 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-11-07 09:39:10,943 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 09:39:10,943 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 09:39:10,944 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 09:39:10,944 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 09:39:10,944 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 09:39:10,946 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 09:39:10,946 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-07 09:39:10,946 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 09:39:10,946 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 09:39:10,946 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 09:39:10,947 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 09:39:10,950 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 09:39:10,950 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 09:39:10,950 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 09:39:10,951 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 09:39:10,951 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 09:39:10,951 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 09:39:10,952 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 09:39:10,953 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 09:39:10,953 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 09:39:10,953 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 09:39:10,953 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 09:39:10,953 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 09:39:10,954 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 09:39:10,954 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 09:39:10,954 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 09:39:10,954 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 09:39:10,954 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 09:39:10,955 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 09:39:10,956 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 09:39:10,956 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 09:39:10,956 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 09:39:10,956 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 09:39:10,956 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 09:39:10,957 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 09:39:10,957 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 09:39:11,018 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 09:39:11,031 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 09:39:11,035 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 09:39:11,037 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 09:39:11,037 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 09:39:11,038 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label43_true-unreach-call.c [2018-11-07 09:39:11,103 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b433d1db5/8851ad6666224604a5dfe82080506dd5/FLAG237f5b2f2 [2018-11-07 09:39:11,896 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 09:39:11,897 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label43_true-unreach-call.c [2018-11-07 09:39:11,932 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b433d1db5/8851ad6666224604a5dfe82080506dd5/FLAG237f5b2f2 [2018-11-07 09:39:11,955 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b433d1db5/8851ad6666224604a5dfe82080506dd5 [2018-11-07 09:39:11,968 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 09:39:11,971 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 09:39:11,972 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 09:39:11,973 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 09:39:11,980 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 09:39:11,981 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:39:11" (1/1) ... [2018-11-07 09:39:11,985 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53c7ef73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:39:11, skipping insertion in model container [2018-11-07 09:39:11,985 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:39:11" (1/1) ... [2018-11-07 09:39:11,996 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 09:39:12,127 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 09:39:13,158 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 09:39:13,163 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 09:39:13,652 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 09:39:13,685 INFO L193 MainTranslator]: Completed translation [2018-11-07 09:39:13,686 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:39:13 WrapperNode [2018-11-07 09:39:13,686 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 09:39:13,687 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 09:39:13,687 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 09:39:13,687 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 09:39:13,699 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:39:13" (1/1) ... [2018-11-07 09:39:13,986 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:39:13" (1/1) ... [2018-11-07 09:39:13,998 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 09:39:13,999 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 09:39:13,999 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 09:39:13,999 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 09:39:14,011 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:39:13" (1/1) ... [2018-11-07 09:39:14,011 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:39:13" (1/1) ... [2018-11-07 09:39:14,035 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:39:13" (1/1) ... [2018-11-07 09:39:14,035 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:39:13" (1/1) ... [2018-11-07 09:39:14,142 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:39:13" (1/1) ... [2018-11-07 09:39:14,173 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:39:13" (1/1) ... [2018-11-07 09:39:14,204 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:39:13" (1/1) ... [2018-11-07 09:39:14,235 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 09:39:14,236 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 09:39:14,236 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 09:39:14,236 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 09:39:14,237 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:39:13" (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 09:39:14,308 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 09:39:14,308 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 09:39:14,308 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 09:39:14,308 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 09:39:14,309 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 09:39:14,309 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 09:39:14,310 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 09:39:14,310 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 09:39:14,310 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 09:39:14,310 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 09:39:14,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 09:39:14,311 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 09:39:14,311 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 09:39:22,937 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 09:39:22,938 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:39:22 BoogieIcfgContainer [2018-11-07 09:39:22,938 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 09:39:22,939 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 09:39:22,940 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 09:39:22,943 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 09:39:22,943 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 09:39:11" (1/3) ... [2018-11-07 09:39:22,944 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2640177c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:39:22, skipping insertion in model container [2018-11-07 09:39:22,944 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:39:13" (2/3) ... [2018-11-07 09:39:22,945 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2640177c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:39:22, skipping insertion in model container [2018-11-07 09:39:22,945 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:39:22" (3/3) ... [2018-11-07 09:39:22,947 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label43_true-unreach-call.c [2018-11-07 09:39:22,957 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 09:39:22,968 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 09:39:22,986 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 09:39:23,032 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 09:39:23,033 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 09:39:23,033 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 09:39:23,033 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 09:39:23,033 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 09:39:23,033 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 09:39:23,033 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 09:39:23,035 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 09:39:23,084 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-11-07 09:39:23,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2018-11-07 09:39:23,095 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:39:23,096 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 09:39:23,099 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:39:23,105 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:39:23,106 INFO L82 PathProgramCache]: Analyzing trace with hash 2013780399, now seen corresponding path program 1 times [2018-11-07 09:39:23,109 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:39:23,157 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:39:23,157 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:39:23,158 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:39:23,158 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:39:23,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:39:23,610 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 09:39:23,716 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 09:39:23,719 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:39:23,720 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 09:39:23,720 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:39:23,728 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 09:39:23,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 09:39:23,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 09:39:23,748 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 3 states. [2018-11-07 09:39:30,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:39:30,169 INFO L93 Difference]: Finished difference Result 2251 states and 4322 transitions. [2018-11-07 09:39:30,170 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 09:39:30,172 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 73 [2018-11-07 09:39:30,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:39:30,211 INFO L225 Difference]: With dead ends: 2251 [2018-11-07 09:39:30,211 INFO L226 Difference]: Without dead ends: 1474 [2018-11-07 09:39:30,223 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 09:39:30,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2018-11-07 09:39:30,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1474. [2018-11-07 09:39:30,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2018-11-07 09:39:30,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2721 transitions. [2018-11-07 09:39:30,411 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2721 transitions. Word has length 73 [2018-11-07 09:39:30,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:39:30,412 INFO L480 AbstractCegarLoop]: Abstraction has 1474 states and 2721 transitions. [2018-11-07 09:39:30,412 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 09:39:30,412 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2721 transitions. [2018-11-07 09:39:30,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2018-11-07 09:39:30,434 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:39:30,435 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] [2018-11-07 09:39:30,435 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:39:30,436 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:39:30,436 INFO L82 PathProgramCache]: Analyzing trace with hash -928614391, now seen corresponding path program 1 times [2018-11-07 09:39:30,436 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:39:30,437 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:39:30,438 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:39:30,439 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:39:30,439 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:39:30,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:39:30,796 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 09:39:30,796 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:39:30,797 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 09:39:30,797 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:39:30,799 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 09:39:30,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 09:39:30,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 09:39:30,800 INFO L87 Difference]: Start difference. First operand 1474 states and 2721 transitions. Second operand 6 states. [2018-11-07 09:39:40,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:39:40,178 INFO L93 Difference]: Finished difference Result 4419 states and 8244 transitions. [2018-11-07 09:39:40,178 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 09:39:40,178 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 162 [2018-11-07 09:39:40,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:39:40,201 INFO L225 Difference]: With dead ends: 4419 [2018-11-07 09:39:40,201 INFO L226 Difference]: Without dead ends: 2951 [2018-11-07 09:39:40,208 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 09:39:40,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2951 states. [2018-11-07 09:39:40,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2951 to 2928. [2018-11-07 09:39:40,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2928 states. [2018-11-07 09:39:40,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2928 states to 2928 states and 5087 transitions. [2018-11-07 09:39:40,344 INFO L78 Accepts]: Start accepts. Automaton has 2928 states and 5087 transitions. Word has length 162 [2018-11-07 09:39:40,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:39:40,344 INFO L480 AbstractCegarLoop]: Abstraction has 2928 states and 5087 transitions. [2018-11-07 09:39:40,345 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 09:39:40,345 INFO L276 IsEmpty]: Start isEmpty. Operand 2928 states and 5087 transitions. [2018-11-07 09:39:40,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2018-11-07 09:39:40,351 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:39:40,352 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:39:40,352 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:39:40,356 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:39:40,357 INFO L82 PathProgramCache]: Analyzing trace with hash 2132673540, now seen corresponding path program 1 times [2018-11-07 09:39:40,357 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:39:40,359 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:39:40,359 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:39:40,359 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:39:40,359 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:39:40,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:39:40,708 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 09:39:40,709 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:39:40,709 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 09:39:40,709 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:39:40,710 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 09:39:40,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 09:39:40,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 09:39:40,711 INFO L87 Difference]: Start difference. First operand 2928 states and 5087 transitions. Second operand 6 states. [2018-11-07 09:39:46,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:39:46,452 INFO L93 Difference]: Finished difference Result 6669 states and 11522 transitions. [2018-11-07 09:39:46,452 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 09:39:46,452 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 209 [2018-11-07 09:39:46,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:39:46,479 INFO L225 Difference]: With dead ends: 6669 [2018-11-07 09:39:46,479 INFO L226 Difference]: Without dead ends: 3747 [2018-11-07 09:39:46,489 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 09:39:46,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3747 states. [2018-11-07 09:39:46,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3747 to 3689. [2018-11-07 09:39:46,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3689 states. [2018-11-07 09:39:46,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3689 states to 3689 states and 5891 transitions. [2018-11-07 09:39:46,606 INFO L78 Accepts]: Start accepts. Automaton has 3689 states and 5891 transitions. Word has length 209 [2018-11-07 09:39:46,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:39:46,607 INFO L480 AbstractCegarLoop]: Abstraction has 3689 states and 5891 transitions. [2018-11-07 09:39:46,607 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 09:39:46,607 INFO L276 IsEmpty]: Start isEmpty. Operand 3689 states and 5891 transitions. [2018-11-07 09:39:46,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2018-11-07 09:39:46,611 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:39:46,615 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:39:46,616 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:39:46,616 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:39:46,616 INFO L82 PathProgramCache]: Analyzing trace with hash 2039872936, now seen corresponding path program 1 times [2018-11-07 09:39:46,616 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:39:46,617 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:39:46,618 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:39:46,618 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:39:46,618 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:39:46,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:39:46,904 WARN L179 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 09:39:47,245 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 09:39:47,246 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:39:47,246 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 09:39:47,246 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:39:47,247 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 09:39:47,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 09:39:47,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 09:39:47,248 INFO L87 Difference]: Start difference. First operand 3689 states and 5891 transitions. Second operand 6 states. [2018-11-07 09:39:52,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:39:52,352 INFO L93 Difference]: Finished difference Result 9623 states and 15373 transitions. [2018-11-07 09:39:52,352 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 09:39:52,352 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 211 [2018-11-07 09:39:52,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:39:52,381 INFO L225 Difference]: With dead ends: 9623 [2018-11-07 09:39:52,382 INFO L226 Difference]: Without dead ends: 5940 [2018-11-07 09:39:52,394 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 09:39:52,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5940 states. [2018-11-07 09:39:52,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5940 to 5889. [2018-11-07 09:39:52,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5889 states. [2018-11-07 09:39:52,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5889 states to 5889 states and 8064 transitions. [2018-11-07 09:39:52,533 INFO L78 Accepts]: Start accepts. Automaton has 5889 states and 8064 transitions. Word has length 211 [2018-11-07 09:39:52,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:39:52,534 INFO L480 AbstractCegarLoop]: Abstraction has 5889 states and 8064 transitions. [2018-11-07 09:39:52,534 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 09:39:52,534 INFO L276 IsEmpty]: Start isEmpty. Operand 5889 states and 8064 transitions. [2018-11-07 09:39:52,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2018-11-07 09:39:52,541 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:39:52,541 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, 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] [2018-11-07 09:39:52,541 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:39:52,542 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:39:52,542 INFO L82 PathProgramCache]: Analyzing trace with hash 1691415403, now seen corresponding path program 1 times [2018-11-07 09:39:52,542 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:39:52,543 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:39:52,543 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:39:52,543 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:39:52,543 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:39:52,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:39:52,830 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 135 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2018-11-07 09:39:52,831 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:39:52,831 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 09:39:52,831 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:39:52,832 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 09:39:52,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 09:39:52,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 09:39:52,833 INFO L87 Difference]: Start difference. First operand 5889 states and 8064 transitions. Second operand 4 states. [2018-11-07 09:40:00,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:40:00,584 INFO L93 Difference]: Finished difference Result 23211 states and 32875 transitions. [2018-11-07 09:40:00,589 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 09:40:00,590 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 269 [2018-11-07 09:40:00,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:40:00,663 INFO L225 Difference]: With dead ends: 23211 [2018-11-07 09:40:00,663 INFO L226 Difference]: Without dead ends: 17328 [2018-11-07 09:40:00,695 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 09:40:00,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17328 states. [2018-11-07 09:40:01,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17328 to 17328. [2018-11-07 09:40:01,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17328 states. [2018-11-07 09:40:01,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17328 states to 17328 states and 23091 transitions. [2018-11-07 09:40:01,079 INFO L78 Accepts]: Start accepts. Automaton has 17328 states and 23091 transitions. Word has length 269 [2018-11-07 09:40:01,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:40:01,080 INFO L480 AbstractCegarLoop]: Abstraction has 17328 states and 23091 transitions. [2018-11-07 09:40:01,080 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 09:40:01,080 INFO L276 IsEmpty]: Start isEmpty. Operand 17328 states and 23091 transitions. [2018-11-07 09:40:01,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 475 [2018-11-07 09:40:01,123 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:40:01,123 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:40:01,124 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:40:01,124 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:40:01,124 INFO L82 PathProgramCache]: Analyzing trace with hash 1084028798, now seen corresponding path program 1 times [2018-11-07 09:40:01,124 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:40:01,125 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:40:01,126 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:40:01,126 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:40:01,126 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:40:01,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:40:01,704 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 253 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:40:01,704 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:40:01,704 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:40:01,705 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 475 with the following transitions: [2018-11-07 09:40:01,708 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1839], [1847], [1855], [1863], [1871], [1879], [1887], [1895], [1903], [1911], [1919], [1927], [1935], [1943], [1951], [1959], [1967], [1975], [1983], [1991], [1999], [2007], [2015], [2023], [2031], [2039], [2047], [2055], [2063], [2071], [2079], [2087], [2095], [2103], [2107], [2109], [2112], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2269], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2328], [2329], [2333], [2337], [2341], [2345], [2349], [2353], [2357], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2585], [2589], [2593], [2597], [2601], [2605], [2609], [2613], [2617], [2621], [2625], [2629], [2633], [2637], [2641], [2645], [2649], [2653], [2657], [2661], [2665], [2669], [2673], [2677], [2681], [2685], [2689], [2693], [2697], [2701], [2705], [2709], [2713], [2717], [2721], [2725], [2729], [2733], [2737], [2741], [2745], [2749], [2753], [2757], [2761], [2765], [2769], [2773], [2777], [2781], [2785], [2789], [2793], [2797], [2801], [2805], [2809], [2813], [2817], [2821], [2825], [2829], [2833], [2837], [2841], [2845], [2849], [2853], [2857], [2861], [2865], [2869], [2873], [2877], [2881], [2885], [2889], [2893], [2897], [2901], [2905], [2909], [2913], [2917], [2921], [2925], [2929], [2933], [2937], [2941], [2945], [2948], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-11-07 09:40:01,780 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:40:01,780 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:40:02,669 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 09:40:02,671 INFO L272 AbstractInterpreter]: Visited 283 different actions 283 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 09:40:02,690 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:40:02,690 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 09:40:03,514 INFO L227 lantSequenceWeakener]: Weakened 465 states. On average, predicates are now at 77.83% of their original sizes. [2018-11-07 09:40:03,514 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 09:40:03,593 INFO L415 sIntCurrentIteration]: We unified 473 AI predicates to 473 [2018-11-07 09:40:03,593 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 09:40:03,594 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 09:40:03,595 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2018-11-07 09:40:03,595 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:40:03,596 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 09:40:03,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 09:40:03,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 09:40:03,596 INFO L87 Difference]: Start difference. First operand 17328 states and 23091 transitions. Second operand 6 states. [2018-11-07 09:40:47,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:40:47,899 INFO L93 Difference]: Finished difference Result 35355 states and 46995 transitions. [2018-11-07 09:40:47,899 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-07 09:40:47,899 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 474 [2018-11-07 09:40:47,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:40:47,974 INFO L225 Difference]: With dead ends: 35355 [2018-11-07 09:40:47,974 INFO L226 Difference]: Without dead ends: 18033 [2018-11-07 09:40:48,031 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 474 GetRequests, 469 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-11-07 09:40:48,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18033 states. [2018-11-07 09:40:48,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18033 to 18031. [2018-11-07 09:40:48,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18031 states. [2018-11-07 09:40:48,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18031 states to 18031 states and 23806 transitions. [2018-11-07 09:40:48,648 INFO L78 Accepts]: Start accepts. Automaton has 18031 states and 23806 transitions. Word has length 474 [2018-11-07 09:40:48,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:40:48,649 INFO L480 AbstractCegarLoop]: Abstraction has 18031 states and 23806 transitions. [2018-11-07 09:40:48,649 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 09:40:48,649 INFO L276 IsEmpty]: Start isEmpty. Operand 18031 states and 23806 transitions. [2018-11-07 09:40:48,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 662 [2018-11-07 09:40:48,704 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:40:48,705 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:40:48,705 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:40:48,706 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:40:48,706 INFO L82 PathProgramCache]: Analyzing trace with hash -571263680, now seen corresponding path program 1 times [2018-11-07 09:40:48,706 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:40:48,707 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:40:48,708 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:40:48,708 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:40:48,708 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:40:48,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:40:49,374 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 09:40:49,565 WARN L179 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 09:40:50,208 WARN L179 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-11-07 09:40:50,981 INFO L134 CoverageAnalysis]: Checked inductivity of 631 backedges. 257 proven. 369 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 09:40:50,981 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:40:50,981 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:40:50,982 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 662 with the following transitions: [2018-11-07 09:40:50,983 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1839], [1847], [1855], [1863], [1871], [1879], [1887], [1895], [1903], [1911], [1919], [1927], [1935], [1943], [1951], [1959], [1967], [1975], [1983], [1991], [1999], [2007], [2015], [2023], [2031], [2039], [2047], [2055], [2063], [2071], [2079], [2087], [2095], [2103], [2107], [2109], [2112], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2269], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2328], [2329], [2333], [2337], [2341], [2345], [2349], [2353], [2357], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2584], [2585], [2589], [2593], [2597], [2601], [2605], [2609], [2613], [2617], [2621], [2625], [2629], [2633], [2637], [2641], [2645], [2649], [2653], [2657], [2661], [2665], [2669], [2673], [2677], [2681], [2685], [2689], [2693], [2697], [2701], [2705], [2709], [2713], [2717], [2721], [2725], [2729], [2733], [2737], [2741], [2745], [2749], [2753], [2757], [2761], [2765], [2769], [2773], [2777], [2781], [2785], [2789], [2793], [2797], [2801], [2805], [2809], [2813], [2817], [2821], [2825], [2829], [2833], [2837], [2841], [2845], [2849], [2853], [2857], [2861], [2865], [2869], [2873], [2877], [2881], [2885], [2889], [2893], [2897], [2901], [2905], [2909], [2913], [2917], [2921], [2925], [2929], [2933], [2937], [2941], [2945], [2948], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-11-07 09:40:50,992 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:40:50,993 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:40:51,282 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 09:40:51,283 INFO L272 AbstractInterpreter]: Visited 287 different actions 567 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 09:40:51,292 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:40:51,292 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 09:40:51,909 INFO L227 lantSequenceWeakener]: Weakened 658 states. On average, predicates are now at 77.7% of their original sizes. [2018-11-07 09:40:51,909 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 09:40:52,133 INFO L415 sIntCurrentIteration]: We unified 660 AI predicates to 660 [2018-11-07 09:40:52,134 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 09:40:52,134 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 09:40:52,135 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 19 [2018-11-07 09:40:52,135 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:40:52,136 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-07 09:40:52,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-07 09:40:52,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-11-07 09:40:52,137 INFO L87 Difference]: Start difference. First operand 18031 states and 23806 transitions. Second operand 10 states. [2018-11-07 09:42:27,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:42:27,343 INFO L93 Difference]: Finished difference Result 37469 states and 49292 transitions. [2018-11-07 09:42:27,343 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-11-07 09:42:27,344 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 661 [2018-11-07 09:42:27,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:42:27,415 INFO L225 Difference]: With dead ends: 37469 [2018-11-07 09:42:27,416 INFO L226 Difference]: Without dead ends: 20147 [2018-11-07 09:42:27,450 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 669 GetRequests, 652 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2018-11-07 09:42:27,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20147 states. [2018-11-07 09:42:27,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20147 to 20142. [2018-11-07 09:42:27,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20142 states. [2018-11-07 09:42:27,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20142 states to 20142 states and 25952 transitions. [2018-11-07 09:42:27,810 INFO L78 Accepts]: Start accepts. Automaton has 20142 states and 25952 transitions. Word has length 661 [2018-11-07 09:42:27,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:42:27,811 INFO L480 AbstractCegarLoop]: Abstraction has 20142 states and 25952 transitions. [2018-11-07 09:42:27,811 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-07 09:42:27,811 INFO L276 IsEmpty]: Start isEmpty. Operand 20142 states and 25952 transitions. [2018-11-07 09:42:27,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1311 [2018-11-07 09:42:27,910 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:42:27,911 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:42:27,911 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:42:27,912 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:42:27,912 INFO L82 PathProgramCache]: Analyzing trace with hash -1342330328, now seen corresponding path program 1 times [2018-11-07 09:42:27,912 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:42:27,913 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:42:27,913 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:42:27,914 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:42:27,914 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:42:28,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:42:30,631 INFO L134 CoverageAnalysis]: Checked inductivity of 1497 backedges. 947 proven. 2 refuted. 0 times theorem prover too weak. 548 trivial. 0 not checked. [2018-11-07 09:42:30,631 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:42:30,631 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:42:30,632 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 1311 with the following transitions: [2018-11-07 09:42:30,633 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [26], [30], [34], [37], [739], [740], [744], [748], [752], [756], [760], [764], [768], [772], [776], [780], [784], [788], [792], [795], [796], [800], [804], [808], [812], [816], [820], [824], [828], [832], [836], [840], [844], [848], [852], [856], [860], [864], [868], [872], [876], [880], [884], [888], [892], [896], [900], [904], [908], [912], [916], [920], [924], [928], [932], [936], [940], [944], [948], [952], [956], [960], [964], [968], [972], [976], [980], [984], [988], [992], [996], [1000], [1004], [1008], [1012], [1016], [1020], [1024], [1028], [1032], [1036], [1040], [1044], [1048], [1052], [1056], [1060], [1064], [1068], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1184], [1188], [1192], [1196], [1200], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1248], [1252], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1360], [1364], [1368], [1372], [1376], [1380], [1384], [1388], [1392], [1396], [1400], [1404], [1408], [1412], [1416], [1420], [1424], [1428], [1432], [1436], [1440], [1444], [1448], [1452], [1456], [1460], [1464], [1468], [1472], [1476], [1480], [1484], [1488], [1492], [1496], [1500], [1504], [1508], [1512], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1552], [1556], [1560], [1564], [1568], [1572], [1576], [1580], [1584], [1588], [1592], [1596], [1600], [1604], [1608], [1612], [1616], [1620], [1622], [1623], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1839], [1847], [1855], [1863], [1871], [1879], [1887], [1895], [1903], [1911], [1919], [1927], [1935], [1943], [1951], [1959], [1967], [1975], [1983], [1991], [1999], [2007], [2015], [2023], [2031], [2039], [2047], [2055], [2063], [2071], [2079], [2087], [2095], [2103], [2107], [2109], [2112], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2269], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2328], [2329], [2333], [2337], [2341], [2345], [2349], [2353], [2357], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2585], [2589], [2593], [2597], [2601], [2605], [2609], [2613], [2617], [2621], [2625], [2629], [2633], [2637], [2641], [2645], [2649], [2653], [2657], [2661], [2665], [2669], [2673], [2677], [2681], [2685], [2689], [2693], [2697], [2701], [2705], [2709], [2713], [2717], [2721], [2725], [2729], [2733], [2737], [2741], [2745], [2749], [2753], [2757], [2761], [2765], [2769], [2773], [2777], [2781], [2785], [2789], [2793], [2797], [2801], [2805], [2809], [2813], [2817], [2821], [2825], [2829], [2833], [2837], [2841], [2845], [2849], [2853], [2857], [2861], [2865], [2869], [2873], [2877], [2881], [2885], [2889], [2893], [2897], [2901], [2905], [2909], [2913], [2917], [2921], [2925], [2929], [2933], [2937], [2941], [2945], [2948], [2949], [2953], [2957], [2961], [2965], [2969], [2973], [2977], [2981], [2985], [2989], [2993], [2995], [2996], [3000], [3004], [3010], [3014], [3016], [3021], [3022], [3023], [3024], [3025], [3026], [3027], [3029], [3030] [2018-11-07 09:42:30,654 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:42:30,654 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:42:32,178 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 09:42:32,178 INFO L272 AbstractInterpreter]: Visited 539 different actions 2702 times. Merged at 11 different actions 55 times. Widened at 1 different actions 1 times. Found 10 fixpoints after 3 different actions. Largest state had 24 variables. [2018-11-07 09:42:32,188 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:42:32,189 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 09:42:32,189 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:42:32,189 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 09:42:32,202 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:42:32,202 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 09:42:32,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:42:32,565 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 09:42:34,293 INFO L134 CoverageAnalysis]: Checked inductivity of 1497 backedges. 947 proven. 2 refuted. 0 times theorem prover too weak. 548 trivial. 0 not checked. [2018-11-07 09:42:34,294 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 09:42:35,732 INFO L134 CoverageAnalysis]: Checked inductivity of 1497 backedges. 947 proven. 2 refuted. 0 times theorem prover too weak. 548 trivial. 0 not checked. [2018-11-07 09:42:35,755 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 09:42:35,756 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2018-11-07 09:42:35,756 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 09:42:35,759 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-07 09:42:35,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-07 09:42:35,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2018-11-07 09:42:35,760 INFO L87 Difference]: Start difference. First operand 20142 states and 25952 transitions. Second operand 9 states. [2018-11-07 09:42:52,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:42:52,476 INFO L93 Difference]: Finished difference Result 51076 states and 71235 transitions. [2018-11-07 09:42:52,476 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-11-07 09:42:52,477 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1310 [2018-11-07 09:42:52,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:42:52,668 INFO L225 Difference]: With dead ends: 51076 [2018-11-07 09:42:52,668 INFO L226 Difference]: Without dead ends: 31643 [2018-11-07 09:42:52,798 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2643 GetRequests, 2624 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=128, Invalid=252, Unknown=0, NotChecked=0, Total=380 [2018-11-07 09:42:52,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31643 states. [2018-11-07 09:42:53,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31643 to 31596. [2018-11-07 09:42:53,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31596 states. [2018-11-07 09:42:53,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31596 states to 31596 states and 41543 transitions. [2018-11-07 09:42:53,957 INFO L78 Accepts]: Start accepts. Automaton has 31596 states and 41543 transitions. Word has length 1310 [2018-11-07 09:42:53,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:42:53,959 INFO L480 AbstractCegarLoop]: Abstraction has 31596 states and 41543 transitions. [2018-11-07 09:42:53,959 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-07 09:42:53,959 INFO L276 IsEmpty]: Start isEmpty. Operand 31596 states and 41543 transitions. [2018-11-07 09:42:54,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1351 [2018-11-07 09:42:54,153 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:42:54,154 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:42:54,155 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:42:54,155 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:42:54,158 INFO L82 PathProgramCache]: Analyzing trace with hash 1395876861, now seen corresponding path program 1 times [2018-11-07 09:42:54,158 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:42:54,159 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:42:54,160 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:42:54,160 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:42:54,160 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:42:54,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:42:56,808 INFO L134 CoverageAnalysis]: Checked inductivity of 1755 backedges. 1056 proven. 2 refuted. 0 times theorem prover too weak. 697 trivial. 0 not checked. [2018-11-07 09:42:56,809 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:42:56,809 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:42:56,810 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 1351 with the following transitions: [2018-11-07 09:42:56,810 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [26], [30], [34], [37], [739], [740], [744], [748], [752], [756], [760], [764], [768], [772], [776], [780], [784], [788], [792], [795], [796], [800], [804], [808], [812], [816], [820], [824], [828], [832], [836], [840], [844], [848], [852], [856], [860], [864], [868], [872], [876], [880], [884], [888], [892], [896], [900], [904], [908], [912], [916], [920], [924], [928], [932], [936], [940], [944], [948], [952], [956], [960], [964], [968], [972], [976], [980], [984], [988], [992], [996], [1000], [1004], [1008], [1012], [1016], [1020], [1024], [1028], [1032], [1036], [1040], [1044], [1048], [1052], [1056], [1060], [1064], [1068], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1184], [1188], [1192], [1196], [1200], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1248], [1252], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1360], [1364], [1368], [1372], [1376], [1380], [1384], [1388], [1392], [1396], [1400], [1404], [1408], [1412], [1416], [1420], [1424], [1428], [1432], [1436], [1440], [1444], [1448], [1452], [1456], [1460], [1464], [1468], [1472], [1476], [1480], [1484], [1488], [1492], [1496], [1500], [1504], [1508], [1512], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1552], [1556], [1560], [1564], [1568], [1572], [1576], [1580], [1584], [1588], [1592], [1596], [1600], [1604], [1608], [1612], [1616], [1620], [1622], [1623], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1839], [1847], [1855], [1863], [1871], [1879], [1887], [1895], [1903], [1911], [1919], [1927], [1935], [1943], [1951], [1959], [1967], [1975], [1983], [1991], [1999], [2007], [2015], [2023], [2031], [2039], [2047], [2055], [2063], [2071], [2079], [2087], [2095], [2103], [2107], [2109], [2112], [2117], [2121], [2124], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2200], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2269], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2329], [2333], [2337], [2341], [2345], [2349], [2353], [2357], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2585], [2589], [2593], [2597], [2601], [2605], [2609], [2613], [2617], [2621], [2625], [2629], [2633], [2637], [2641], [2645], [2649], [2653], [2657], [2661], [2665], [2669], [2673], [2677], [2681], [2685], [2689], [2693], [2697], [2701], [2705], [2709], [2713], [2717], [2721], [2725], [2729], [2733], [2737], [2741], [2745], [2749], [2753], [2757], [2761], [2765], [2769], [2773], [2777], [2781], [2785], [2789], [2793], [2797], [2801], [2805], [2809], [2813], [2817], [2821], [2825], [2829], [2833], [2837], [2841], [2845], [2849], [2853], [2857], [2861], [2865], [2869], [2873], [2877], [2881], [2885], [2889], [2893], [2897], [2901], [2905], [2909], [2913], [2917], [2921], [2925], [2929], [2933], [2937], [2941], [2945], [2948], [2949], [2953], [2957], [2961], [2965], [2969], [2973], [2977], [2981], [2985], [2989], [2993], [2995], [2996], [3000], [3004], [3010], [3014], [3016], [3021], [3022], [3023], [3024], [3025], [3026], [3027], [3029], [3030] [2018-11-07 09:42:56,820 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:42:56,820 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... [2018-11-07 09:42:56,929 WARN L572 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-11-07 09:42:56,930 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-11-07 09:42:56,930 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-07 09:42:56,930 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:42:56,931 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 09:42:56,949 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:42:56,949 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 09:42:57,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:42:57,266 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 09:42:57,311 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-11-07 09:42:57,512 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 09:42:57,513 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 09:42:57,519 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 09:42:57,520 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 09:42:57 BoogieIcfgContainer [2018-11-07 09:42:57,520 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 09:42:57,521 INFO L168 Benchmark]: Toolchain (without parser) took 225552.34 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 76.7 MB). Peak memory consumption was 2.7 GB. Max. memory is 7.1 GB. [2018-11-07 09:42:57,522 INFO L168 Benchmark]: CDTParser took 0.18 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 09:42:57,522 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1713.90 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 150.6 MB). Peak memory consumption was 150.6 MB. Max. memory is 7.1 GB. [2018-11-07 09:42:57,523 INFO L168 Benchmark]: Boogie Procedure Inliner took 311.67 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 771.2 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -964.2 MB). Peak memory consumption was 42.2 MB. Max. memory is 7.1 GB. [2018-11-07 09:42:57,528 INFO L168 Benchmark]: Boogie Preprocessor took 236.19 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. [2018-11-07 09:42:57,529 INFO L168 Benchmark]: RCFGBuilder took 8702.89 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 511.9 MB). Peak memory consumption was 511.9 MB. Max. memory is 7.1 GB. [2018-11-07 09:42:57,529 INFO L168 Benchmark]: TraceAbstraction took 214580.34 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 1.7 GB in the beginning and 1.3 GB in the end (delta: 350.6 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2018-11-07 09:42:57,546 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 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 1713.90 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 150.6 MB). Peak memory consumption was 150.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 311.67 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 771.2 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -964.2 MB). Peak memory consumption was 42.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 236.19 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8702.89 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 511.9 MB). Peak memory consumption was 511.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 214580.34 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 1.7 GB in the beginning and 1.3 GB in the end (delta: 350.6 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 207]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 207). Cancelled while BasicCegarLoop was analyzing trace of length 1351 with TraceHistMax 6,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 6 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 775 locations, 1 error locations. TIMEOUT Result, 214.4s OverallTime, 9 OverallIterations, 6 TraceHistogramMax, 191.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2472 SDtfs, 17980 SDslu, 1414 SDs, 0 SdLazy, 38940 SolverSat, 8445 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 144.5s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 3826 GetRequests, 3756 SyntacticMatches, 6 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 2.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31596occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 2.9s AbstIntTime, 4 AbstIntIterations, 2 AbstIntStrong, 0.998619300292427 AbsIntWeakeningRatio, 0.05119152691968226 AbsIntAvgWeakeningVarsNumRemoved, 16.719329214474847 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 3.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 186 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 7.9s InterpolantComputationTime, 4679 NumberOfCodeBlocks, 4679 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 5979 ConstructedInterpolants, 0 QuantifiedInterpolants, 14815190 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1634 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 10 InterpolantComputations, 5 PerfectInterpolantSequences, 5419/5796 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown