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.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label54_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 11:58:25,904 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 11:58:25,906 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 11:58:25,922 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 11:58:25,922 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 11:58:25,924 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 11:58:25,926 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 11:58:25,929 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 11:58:25,931 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 11:58:25,932 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 11:58:25,940 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 11:58:25,940 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 11:58:25,942 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 11:58:25,943 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 11:58:25,948 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 11:58:25,949 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 11:58:25,951 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 11:58:25,953 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 11:58:25,956 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 11:58:25,961 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 11:58:25,962 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 11:58:25,963 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 11:58:25,966 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 11:58:25,967 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 11:58:25,969 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 11:58:25,970 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 11:58:25,971 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 11:58:25,973 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 11:58:25,974 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 11:58:25,977 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 11:58:25,978 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 11:58:25,980 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 11:58:25,980 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 11:58:25,980 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 11:58:25,983 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 11:58:25,983 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 11:58:25,984 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.epf [2018-11-07 11:58:26,003 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 11:58:26,004 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 11:58:26,005 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 11:58:26,005 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 11:58:26,005 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 11:58:26,005 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 11:58:26,005 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 11:58:26,006 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 11:58:26,006 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 11:58:26,006 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 11:58:26,006 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 11:58:26,006 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 11:58:26,007 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 11:58:26,007 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 11:58:26,008 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 11:58:26,008 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 11:58:26,008 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 11:58:26,008 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 11:58:26,008 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 11:58:26,009 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 11:58:26,009 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 11:58:26,009 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 11:58:26,009 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 11:58:26,010 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 11:58:26,010 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 11:58:26,010 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 11:58:26,010 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 11:58:26,010 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 11:58:26,011 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 11:58:26,011 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 11:58:26,011 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 11:58:26,011 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 11:58:26,011 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 11:58:26,011 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 11:58:26,065 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 11:58:26,078 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 11:58:26,082 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 11:58:26,084 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 11:58:26,084 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 11:58:26,085 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label54_false-unreach-call.c [2018-11-07 11:58:26,150 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ddb592b7/da6fd66abaa5430cb1b22386d62f2d93/FLAG2b5f5c50d [2018-11-07 11:58:26,966 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 11:58:26,967 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label54_false-unreach-call.c [2018-11-07 11:58:27,015 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ddb592b7/da6fd66abaa5430cb1b22386d62f2d93/FLAG2b5f5c50d [2018-11-07 11:58:27,037 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ddb592b7/da6fd66abaa5430cb1b22386d62f2d93 [2018-11-07 11:58:27,050 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 11:58:27,053 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 11:58:27,054 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 11:58:27,055 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 11:58:27,061 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 11:58:27,062 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 11:58:27" (1/1) ... [2018-11-07 11:58:27,065 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@692e9784 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:58:27, skipping insertion in model container [2018-11-07 11:58:27,066 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 11:58:27" (1/1) ... [2018-11-07 11:58:27,078 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 11:58:27,279 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 11:58:28,848 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 11:58:28,854 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 11:58:29,592 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 11:58:29,627 INFO L193 MainTranslator]: Completed translation [2018-11-07 11:58:29,628 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:58:29 WrapperNode [2018-11-07 11:58:29,628 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 11:58:29,629 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 11:58:29,629 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 11:58:29,629 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 11:58:29,639 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:58:29" (1/1) ... [2018-11-07 11:58:30,007 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:58:29" (1/1) ... [2018-11-07 11:58:30,018 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 11:58:30,019 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 11:58:30,019 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 11:58:30,019 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 11:58:30,031 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:58:29" (1/1) ... [2018-11-07 11:58:30,031 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:58:29" (1/1) ... [2018-11-07 11:58:30,081 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:58:29" (1/1) ... [2018-11-07 11:58:30,081 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:58:29" (1/1) ... [2018-11-07 11:58:30,219 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:58:29" (1/1) ... [2018-11-07 11:58:30,263 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:58:29" (1/1) ... [2018-11-07 11:58:30,303 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:58:29" (1/1) ... [2018-11-07 11:58:30,342 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 11:58:30,343 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 11:58:30,343 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 11:58:30,343 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 11:58:30,344 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:58:29" (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 11:58:30,426 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 11:58:30,426 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 11:58:30,426 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 11:58:30,427 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-07 11:58:30,427 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-07 11:58:30,427 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 11:58:30,427 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 11:58:30,428 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 11:58:30,428 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 11:58:30,428 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 11:58:30,428 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 11:58:30,430 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 11:58:30,430 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 11:58:30,431 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 11:58:30,431 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 11:58:40,558 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 11:58:40,558 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 11:58:40 BoogieIcfgContainer [2018-11-07 11:58:40,559 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 11:58:40,560 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 11:58:40,560 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 11:58:40,563 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 11:58:40,563 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 11:58:27" (1/3) ... [2018-11-07 11:58:40,564 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2782e9f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 11:58:40, skipping insertion in model container [2018-11-07 11:58:40,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:58:29" (2/3) ... [2018-11-07 11:58:40,565 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2782e9f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 11:58:40, skipping insertion in model container [2018-11-07 11:58:40,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 11:58:40" (3/3) ... [2018-11-07 11:58:40,567 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label54_false-unreach-call.c [2018-11-07 11:58:40,580 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 11:58:40,591 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 11:58:40,609 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 11:58:40,660 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 11:58:40,660 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 11:58:40,660 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 11:58:40,660 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 11:58:40,660 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 11:58:40,661 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 11:58:40,661 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 11:58:40,661 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 11:58:40,723 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-11-07 11:58:40,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-11-07 11:58:40,730 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 11:58:40,732 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] [2018-11-07 11:58:40,734 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 11:58:40,739 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 11:58:40,740 INFO L82 PathProgramCache]: Analyzing trace with hash 840041364, now seen corresponding path program 1 times [2018-11-07 11:58:40,742 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 11:58:40,796 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 11:58:40,796 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 11:58:40,796 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 11:58:40,797 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 11:58:40,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 11:58:41,192 WARN L179 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 11:58:41,300 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 11:58:41,304 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 11:58:41,305 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 11:58:41,305 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 11:58:41,313 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 11:58:41,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 11:58:41,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 11:58:41,336 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 3 states. [2018-11-07 11:58:49,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 11:58:49,546 INFO L93 Difference]: Finished difference Result 3097 states and 5707 transitions. [2018-11-07 11:58:49,547 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 11:58:49,548 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 34 [2018-11-07 11:58:49,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 11:58:49,581 INFO L225 Difference]: With dead ends: 3097 [2018-11-07 11:58:49,581 INFO L226 Difference]: Without dead ends: 1975 [2018-11-07 11:58:49,595 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 11:58:49,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1975 states. [2018-11-07 11:58:49,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1975 to 1974. [2018-11-07 11:58:49,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1974 states. [2018-11-07 11:58:49,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1974 states to 1974 states and 3284 transitions. [2018-11-07 11:58:49,758 INFO L78 Accepts]: Start accepts. Automaton has 1974 states and 3284 transitions. Word has length 34 [2018-11-07 11:58:49,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 11:58:49,758 INFO L480 AbstractCegarLoop]: Abstraction has 1974 states and 3284 transitions. [2018-11-07 11:58:49,759 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 11:58:49,759 INFO L276 IsEmpty]: Start isEmpty. Operand 1974 states and 3284 transitions. [2018-11-07 11:58:49,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-11-07 11:58:49,765 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 11:58:49,765 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:58:49,765 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 11:58:49,766 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 11:58:49,766 INFO L82 PathProgramCache]: Analyzing trace with hash 1233820516, now seen corresponding path program 1 times [2018-11-07 11:58:49,766 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 11:58:49,767 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 11:58:49,767 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 11:58:49,768 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 11:58:49,768 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 11:58:49,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 11:58:50,063 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 11:58:50,063 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 11:58:50,064 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 11:58:50,064 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 11:58:50,066 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 11:58:50,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 11:58:50,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 11:58:50,067 INFO L87 Difference]: Start difference. First operand 1974 states and 3284 transitions. Second operand 5 states. [2018-11-07 11:59:04,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 11:59:04,230 INFO L93 Difference]: Finished difference Result 5734 states and 9688 transitions. [2018-11-07 11:59:04,233 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 11:59:04,233 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 110 [2018-11-07 11:59:04,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 11:59:04,267 INFO L225 Difference]: With dead ends: 5734 [2018-11-07 11:59:04,267 INFO L226 Difference]: Without dead ends: 3766 [2018-11-07 11:59:04,275 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 11:59:04,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3766 states. [2018-11-07 11:59:04,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3766 to 3681. [2018-11-07 11:59:04,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3681 states. [2018-11-07 11:59:04,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3681 states to 3681 states and 5655 transitions. [2018-11-07 11:59:04,414 INFO L78 Accepts]: Start accepts. Automaton has 3681 states and 5655 transitions. Word has length 110 [2018-11-07 11:59:04,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 11:59:04,415 INFO L480 AbstractCegarLoop]: Abstraction has 3681 states and 5655 transitions. [2018-11-07 11:59:04,415 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 11:59:04,415 INFO L276 IsEmpty]: Start isEmpty. Operand 3681 states and 5655 transitions. [2018-11-07 11:59:04,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-11-07 11:59:04,423 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 11:59:04,424 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:59:04,424 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 11:59:04,424 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 11:59:04,427 INFO L82 PathProgramCache]: Analyzing trace with hash 66371656, now seen corresponding path program 1 times [2018-11-07 11:59:04,427 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 11:59:04,428 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 11:59:04,428 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 11:59:04,428 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 11:59:04,428 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 11:59:04,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 11:59:04,674 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 11:59:04,674 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 11:59:04,675 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 11:59:04,675 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 11:59:04,675 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 11:59:04,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 11:59:04,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 11:59:04,676 INFO L87 Difference]: Start difference. First operand 3681 states and 5655 transitions. Second operand 5 states. [2018-11-07 11:59:26,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 11:59:26,089 INFO L93 Difference]: Finished difference Result 13646 states and 21726 transitions. [2018-11-07 11:59:26,093 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 11:59:26,093 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 124 [2018-11-07 11:59:26,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 11:59:26,157 INFO L225 Difference]: With dead ends: 13646 [2018-11-07 11:59:26,157 INFO L226 Difference]: Without dead ends: 9971 [2018-11-07 11:59:26,185 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 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 11:59:26,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9971 states. [2018-11-07 11:59:26,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9971 to 9785. [2018-11-07 11:59:26,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9785 states. [2018-11-07 11:59:26,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9785 states to 9785 states and 14483 transitions. [2018-11-07 11:59:26,490 INFO L78 Accepts]: Start accepts. Automaton has 9785 states and 14483 transitions. Word has length 124 [2018-11-07 11:59:26,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 11:59:26,491 INFO L480 AbstractCegarLoop]: Abstraction has 9785 states and 14483 transitions. [2018-11-07 11:59:26,491 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 11:59:26,491 INFO L276 IsEmpty]: Start isEmpty. Operand 9785 states and 14483 transitions. [2018-11-07 11:59:26,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-11-07 11:59:26,502 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 11:59:26,502 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:59:26,502 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 11:59:26,504 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 11:59:26,504 INFO L82 PathProgramCache]: Analyzing trace with hash 1350853156, now seen corresponding path program 1 times [2018-11-07 11:59:26,504 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 11:59:26,505 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 11:59:26,505 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 11:59:26,505 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 11:59:26,506 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 11:59:26,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 11:59:26,848 WARN L179 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 11:59:27,260 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 11:59:27,261 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 11:59:27,261 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 11:59:27,261 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 11:59:27,262 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 11:59:27,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 11:59:27,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 11:59:27,264 INFO L87 Difference]: Start difference. First operand 9785 states and 14483 transitions. Second operand 6 states. [2018-11-07 11:59:39,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 11:59:39,658 INFO L93 Difference]: Finished difference Result 34109 states and 53601 transitions. [2018-11-07 11:59:39,662 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 11:59:39,662 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 142 [2018-11-07 11:59:39,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 11:59:39,808 INFO L225 Difference]: With dead ends: 34109 [2018-11-07 11:59:39,808 INFO L226 Difference]: Without dead ends: 24330 [2018-11-07 11:59:39,886 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 11:59:39,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24330 states. [2018-11-07 11:59:40,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24330 to 24109. [2018-11-07 11:59:40,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24109 states. [2018-11-07 11:59:40,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24109 states to 24109 states and 33941 transitions. [2018-11-07 11:59:40,574 INFO L78 Accepts]: Start accepts. Automaton has 24109 states and 33941 transitions. Word has length 142 [2018-11-07 11:59:40,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 11:59:40,574 INFO L480 AbstractCegarLoop]: Abstraction has 24109 states and 33941 transitions. [2018-11-07 11:59:40,575 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 11:59:40,576 INFO L276 IsEmpty]: Start isEmpty. Operand 24109 states and 33941 transitions. [2018-11-07 11:59:40,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2018-11-07 11:59:40,582 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 11:59:40,582 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:59:40,582 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 11:59:40,583 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 11:59:40,583 INFO L82 PathProgramCache]: Analyzing trace with hash -120384225, now seen corresponding path program 1 times [2018-11-07 11:59:40,583 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 11:59:40,584 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 11:59:40,584 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 11:59:40,584 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 11:59:40,584 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 11:59:40,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 11:59:40,869 WARN L179 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 11:59:41,232 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 11:59:41,233 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 11:59:41,233 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 11:59:41,233 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 11:59:41,236 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 11:59:41,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 11:59:41,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 11:59:41,236 INFO L87 Difference]: Start difference. First operand 24109 states and 33941 transitions. Second operand 6 states. [2018-11-07 11:59:50,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 11:59:50,239 INFO L93 Difference]: Finished difference Result 61360 states and 96049 transitions. [2018-11-07 11:59:50,246 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 11:59:50,246 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 153 [2018-11-07 11:59:50,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 11:59:50,433 INFO L225 Difference]: With dead ends: 61360 [2018-11-07 11:59:50,434 INFO L226 Difference]: Without dead ends: 37257 [2018-11-07 11:59:50,497 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 11:59:50,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37257 states. [2018-11-07 11:59:51,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37257 to 37056. [2018-11-07 11:59:51,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37056 states. [2018-11-07 11:59:51,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37056 states to 37056 states and 52806 transitions. [2018-11-07 11:59:51,477 INFO L78 Accepts]: Start accepts. Automaton has 37056 states and 52806 transitions. Word has length 153 [2018-11-07 11:59:51,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 11:59:51,478 INFO L480 AbstractCegarLoop]: Abstraction has 37056 states and 52806 transitions. [2018-11-07 11:59:51,478 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 11:59:51,478 INFO L276 IsEmpty]: Start isEmpty. Operand 37056 states and 52806 transitions. [2018-11-07 11:59:51,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2018-11-07 11:59:51,485 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 11:59:51,485 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:59:51,486 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 11:59:51,486 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 11:59:51,486 INFO L82 PathProgramCache]: Analyzing trace with hash 1559015888, now seen corresponding path program 1 times [2018-11-07 11:59:51,487 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 11:59:51,488 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 11:59:51,488 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 11:59:51,488 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 11:59:51,488 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 11:59:51,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 11:59:51,781 WARN L179 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 11:59:52,195 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 11:59:52,195 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 11:59:52,196 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 11:59:52,196 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 11:59:52,196 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 11:59:52,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 11:59:52,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 11:59:52,197 INFO L87 Difference]: Start difference. First operand 37056 states and 52806 transitions. Second operand 6 states. [2018-11-07 12:00:00,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 12:00:00,077 INFO L93 Difference]: Finished difference Result 81297 states and 119428 transitions. [2018-11-07 12:00:00,077 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 12:00:00,077 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 181 [2018-11-07 12:00:00,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 12:00:00,301 INFO L225 Difference]: With dead ends: 81297 [2018-11-07 12:00:00,302 INFO L226 Difference]: Without dead ends: 44247 [2018-11-07 12:00:00,410 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 12:00:00,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44247 states. [2018-11-07 12:00:01,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44247 to 44146. [2018-11-07 12:00:01,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44146 states. [2018-11-07 12:00:01,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44146 states to 44146 states and 60219 transitions. [2018-11-07 12:00:01,319 INFO L78 Accepts]: Start accepts. Automaton has 44146 states and 60219 transitions. Word has length 181 [2018-11-07 12:00:01,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 12:00:01,320 INFO L480 AbstractCegarLoop]: Abstraction has 44146 states and 60219 transitions. [2018-11-07 12:00:01,320 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 12:00:01,320 INFO L276 IsEmpty]: Start isEmpty. Operand 44146 states and 60219 transitions. [2018-11-07 12:00:01,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2018-11-07 12:00:01,330 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 12:00:01,330 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 12:00:01,331 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 12:00:01,331 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 12:00:01,331 INFO L82 PathProgramCache]: Analyzing trace with hash -1763920798, now seen corresponding path program 1 times [2018-11-07 12:00:01,331 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 12:00:01,332 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:00:01,332 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 12:00:01,332 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:00:01,333 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 12:00:01,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 12:00:01,866 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 128 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 12:00:01,866 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 12:00:01,867 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 12:00:01,869 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 232 with the following transitions: [2018-11-07 12:00:01,879 INFO L202 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2643], [2651], [2659], [2667], [2675], [2683], [2691], [2699], [2707], [2715], [2723], [2731], [2739], [2747], [2755], [2763], [2771], [2779], [2787], [2795], [2799], [2801], [2804], [2812], [2820], [2828], [2836], [2844], [2852], [2860], [2868], [2876], [2884], [2892], [2900], [2908], [2916], [2924], [2932], [2940], [2948], [2956], [2964], [2972], [2980], [2988], [2996], [3004], [3012], [3020], [3028], [3036], [3044], [3052], [3060], [3068], [3076], [3084], [3092], [3100], [3108], [3116], [3121], [3125], [3129], [3133], [3137], [3148], [3151], [3152], [3156], [3160], [3164], [3168], [3179], [3183], [3187], [3191], [3195], [3199], [3203], [3207], [3218], [3222], [3226], [3230], [3234], [3238], [3242], [3246], [3250], [3254], [3258], [3262], [3266], [3270], [3274], [3278], [3282], [3286], [3290], [3294], [3305], [3309], [3313], [3317], [3321], [3325], [3329], [3333], [3344], [3355], [3358], [3361], [3365], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-11-07 12:00:01,950 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 12:00:01,950 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 12:00:03,062 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 12:00:03,064 INFO L272 AbstractInterpreter]: Visited 124 different actions 124 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-11-07 12:00:03,109 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 12:00:03,109 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 12:00:04,103 INFO L227 lantSequenceWeakener]: Weakened 207 states. On average, predicates are now at 71.26% of their original sizes. [2018-11-07 12:00:04,104 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 12:00:04,996 INFO L415 sIntCurrentIteration]: We unified 230 AI predicates to 230 [2018-11-07 12:00:04,996 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 12:00:04,997 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 12:00:04,997 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [6] total 15 [2018-11-07 12:00:04,998 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 12:00:04,998 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-07 12:00:04,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-07 12:00:04,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-11-07 12:00:04,999 INFO L87 Difference]: Start difference. First operand 44146 states and 60219 transitions. Second operand 11 states. [2018-11-07 12:00:13,549 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown