java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-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_label18_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 14:15:18,926 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 14:15:18,930 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 14:15:18,945 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 14:15:18,945 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 14:15:18,946 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 14:15:18,948 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 14:15:18,949 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 14:15:18,951 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 14:15:18,952 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 14:15:18,953 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 14:15:18,954 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 14:15:18,955 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 14:15:18,958 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 14:15:18,962 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 14:15:18,963 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 14:15:18,964 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 14:15:18,966 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 14:15:18,975 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 14:15:18,976 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 14:15:18,981 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 14:15:18,982 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 14:15:18,988 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 14:15:18,989 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 14:15:18,989 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 14:15:18,990 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 14:15:18,994 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 14:15:18,995 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 14:15:18,996 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 14:15:18,999 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 14:15:19,000 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 14:15:19,001 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 14:15:19,001 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 14:15:19,001 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 14:15:19,003 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 14:15:19,004 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 14:15:19,005 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf [2018-10-27 14:15:19,032 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 14:15:19,032 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 14:15:19,033 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 14:15:19,033 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 14:15:19,034 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 14:15:19,034 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 14:15:19,034 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 14:15:19,034 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 14:15:19,034 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 14:15:19,035 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 14:15:19,035 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 14:15:19,035 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 14:15:19,036 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 14:15:19,036 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 14:15:19,036 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 14:15:19,036 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 14:15:19,037 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 14:15:19,037 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 14:15:19,037 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 14:15:19,039 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 14:15:19,039 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 14:15:19,039 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 14:15:19,039 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 14:15:19,039 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 14:15:19,040 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 14:15:19,040 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 14:15:19,040 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 14:15:19,040 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 14:15:19,040 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 14:15:19,040 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 14:15:19,040 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 14:15:19,041 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 14:15:19,041 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 14:15:19,041 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 14:15:19,105 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 14:15:19,119 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 14:15:19,123 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 14:15:19,124 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 14:15:19,125 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 14:15:19,125 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label18_true-unreach-call.c [2018-10-27 14:15:19,195 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/7f0983866/ff4d134882714ccabd03d4437ee09eb2/FLAG085556d72 [2018-10-27 14:15:20,018 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 14:15:20,019 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label18_true-unreach-call.c [2018-10-27 14:15:20,061 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/7f0983866/ff4d134882714ccabd03d4437ee09eb2/FLAG085556d72 [2018-10-27 14:15:20,085 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/7f0983866/ff4d134882714ccabd03d4437ee09eb2 [2018-10-27 14:15:20,099 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 14:15:20,101 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 14:15:20,102 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 14:15:20,103 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 14:15:20,108 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 14:15:20,109 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:15:20" (1/1) ... [2018-10-27 14:15:20,113 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58fe24b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:15:20, skipping insertion in model container [2018-10-27 14:15:20,114 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:15:20" (1/1) ... [2018-10-27 14:15:20,125 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 14:15:20,320 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 14:15:21,826 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 14:15:21,831 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 14:15:22,610 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 14:15:22,653 INFO L193 MainTranslator]: Completed translation [2018-10-27 14:15:22,653 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:15:22 WrapperNode [2018-10-27 14:15:22,654 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 14:15:22,655 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 14:15:22,655 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 14:15:22,655 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 14:15:22,667 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:15:22" (1/1) ... [2018-10-27 14:15:22,750 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:15:22" (1/1) ... [2018-10-27 14:15:23,274 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 14:15:23,274 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 14:15:23,275 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 14:15:23,275 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 14:15:23,286 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:15:22" (1/1) ... [2018-10-27 14:15:23,287 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:15:22" (1/1) ... [2018-10-27 14:15:23,335 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:15:22" (1/1) ... [2018-10-27 14:15:23,335 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:15:22" (1/1) ... [2018-10-27 14:15:23,496 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:15:22" (1/1) ... [2018-10-27 14:15:23,541 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:15:22" (1/1) ... [2018-10-27 14:15:23,588 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:15:22" (1/1) ... [2018-10-27 14:15:23,652 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 14:15:23,652 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 14:15:23,653 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 14:15:23,653 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 14:15:23,654 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:15:22" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-27 14:15:23,723 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 14:15:23,724 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 14:15:23,724 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-27 14:15:23,724 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-27 14:15:23,724 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-27 14:15:23,724 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-27 14:15:23,725 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 14:15:23,725 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 14:15:23,725 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 14:15:23,725 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 14:15:23,725 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 14:15:23,725 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 14:15:23,726 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 14:15:23,726 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 14:15:36,186 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 14:15:36,187 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:15:36 BoogieIcfgContainer [2018-10-27 14:15:36,187 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 14:15:36,188 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 14:15:36,189 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 14:15:36,192 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 14:15:36,192 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 02:15:20" (1/3) ... [2018-10-27 14:15:36,193 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4912bff0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:15:36, skipping insertion in model container [2018-10-27 14:15:36,193 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:15:22" (2/3) ... [2018-10-27 14:15:36,194 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4912bff0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:15:36, skipping insertion in model container [2018-10-27 14:15:36,194 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:15:36" (3/3) ... [2018-10-27 14:15:36,196 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label18_true-unreach-call.c [2018-10-27 14:15:36,206 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 14:15:36,216 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 14:15:36,234 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 14:15:36,286 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 14:15:36,286 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 14:15:36,286 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 14:15:36,286 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 14:15:36,287 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 14:15:36,287 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 14:15:36,287 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 14:15:36,287 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 14:15:36,349 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-10-27 14:15:36,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-10-27 14:15:36,360 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 14:15:36,361 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] [2018-10-27 14:15:36,364 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 14:15:36,370 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 14:15:36,371 INFO L82 PathProgramCache]: Analyzing trace with hash -856257052, now seen corresponding path program 1 times [2018-10-27 14:15:36,373 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 14:15:36,431 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:15:36,431 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 14:15:36,431 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:15:36,431 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 14:15:36,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 14:15:36,913 WARN L179 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 14:15:37,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 14:15:37,044 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 14:15:37,044 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 14:15:37,044 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 14:15:37,051 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 14:15:37,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 14:15:37,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 14:15:37,072 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 3 states. [2018-10-27 14:15:45,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 14:15:45,973 INFO L93 Difference]: Finished difference Result 3097 states and 5707 transitions. [2018-10-27 14:15:45,973 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 14:15:45,975 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 70 [2018-10-27 14:15:45,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 14:15:46,011 INFO L225 Difference]: With dead ends: 3097 [2018-10-27 14:15:46,011 INFO L226 Difference]: Without dead ends: 1975 [2018-10-27 14:15:46,023 INFO L605 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 [2018-10-27 14:15:46,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1975 states. [2018-10-27 14:15:46,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1975 to 1974. [2018-10-27 14:15:46,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1974 states. [2018-10-27 14:15:46,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1974 states to 1974 states and 3284 transitions. [2018-10-27 14:15:46,215 INFO L78 Accepts]: Start accepts. Automaton has 1974 states and 3284 transitions. Word has length 70 [2018-10-27 14:15:46,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 14:15:46,216 INFO L481 AbstractCegarLoop]: Abstraction has 1974 states and 3284 transitions. [2018-10-27 14:15:46,217 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 14:15:46,217 INFO L276 IsEmpty]: Start isEmpty. Operand 1974 states and 3284 transitions. [2018-10-27 14:15:46,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-10-27 14:15:46,231 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 14:15:46,232 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 14:15:46,232 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 14:15:46,233 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 14:15:46,233 INFO L82 PathProgramCache]: Analyzing trace with hash -410471564, now seen corresponding path program 1 times [2018-10-27 14:15:46,233 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 14:15:46,235 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:15:46,235 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 14:15:46,235 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:15:46,235 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 14:15:46,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 14:15:46,541 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 14:15:46,542 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 14:15:46,542 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-27 14:15:46,542 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 14:15:46,544 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 14:15:46,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 14:15:46,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-27 14:15:46,545 INFO L87 Difference]: Start difference. First operand 1974 states and 3284 transitions. Second operand 5 states. [2018-10-27 14:16:06,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 14:16:06,962 INFO L93 Difference]: Finished difference Result 5736 states and 9691 transitions. [2018-10-27 14:16:06,963 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-27 14:16:06,963 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2018-10-27 14:16:06,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 14:16:06,992 INFO L225 Difference]: With dead ends: 5736 [2018-10-27 14:16:06,993 INFO L226 Difference]: Without dead ends: 3768 [2018-10-27 14:16:06,999 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-27 14:16:07,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3768 states. [2018-10-27 14:16:07,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3768 to 3686. [2018-10-27 14:16:07,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3686 states. [2018-10-27 14:16:07,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3686 states to 3686 states and 5660 transitions. [2018-10-27 14:16:07,128 INFO L78 Accepts]: Start accepts. Automaton has 3686 states and 5660 transitions. Word has length 146 [2018-10-27 14:16:07,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 14:16:07,129 INFO L481 AbstractCegarLoop]: Abstraction has 3686 states and 5660 transitions. [2018-10-27 14:16:07,129 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 14:16:07,129 INFO L276 IsEmpty]: Start isEmpty. Operand 3686 states and 5660 transitions. [2018-10-27 14:16:07,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2018-10-27 14:16:07,135 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 14:16:07,135 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 14:16:07,135 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 14:16:07,136 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 14:16:07,136 INFO L82 PathProgramCache]: Analyzing trace with hash 586688088, now seen corresponding path program 1 times [2018-10-27 14:16:07,136 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 14:16:07,137 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:16:07,137 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 14:16:07,137 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:16:07,137 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 14:16:07,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 14:16:07,327 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 14:16:07,327 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 14:16:07,327 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-27 14:16:07,327 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 14:16:07,328 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 14:16:07,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 14:16:07,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-27 14:16:07,329 INFO L87 Difference]: Start difference. First operand 3686 states and 5660 transitions. Second operand 5 states. [2018-10-27 14:16:33,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 14:16:33,392 INFO L93 Difference]: Finished difference Result 13666 states and 21764 transitions. [2018-10-27 14:16:33,393 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-27 14:16:33,393 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 160 [2018-10-27 14:16:33,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 14:16:33,451 INFO L225 Difference]: With dead ends: 13666 [2018-10-27 14:16:33,451 INFO L226 Difference]: Without dead ends: 9986 [2018-10-27 14:16:33,477 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-27 14:16:33,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9986 states. [2018-10-27 14:16:33,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9986 to 9796. [2018-10-27 14:16:33,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9796 states. [2018-10-27 14:16:33,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9796 states to 9796 states and 14504 transitions. [2018-10-27 14:16:33,744 INFO L78 Accepts]: Start accepts. Automaton has 9796 states and 14504 transitions. Word has length 160 [2018-10-27 14:16:33,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 14:16:33,745 INFO L481 AbstractCegarLoop]: Abstraction has 9796 states and 14504 transitions. [2018-10-27 14:16:33,745 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 14:16:33,745 INFO L276 IsEmpty]: Start isEmpty. Operand 9796 states and 14504 transitions. [2018-10-27 14:16:33,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-10-27 14:16:33,753 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 14:16:33,753 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 14:16:33,753 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 14:16:33,754 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 14:16:33,754 INFO L82 PathProgramCache]: Analyzing trace with hash 154081844, now seen corresponding path program 1 times [2018-10-27 14:16:33,754 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 14:16:33,755 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:16:33,755 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 14:16:33,755 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:16:33,755 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 14:16:33,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 14:16:34,077 WARN L179 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 14:16:34,522 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 14:16:34,523 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 14:16:34,524 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 14:16:34,524 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 14:16:34,524 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 14:16:34,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 14:16:34,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 14:16:34,525 INFO L87 Difference]: Start difference. First operand 9796 states and 14504 transitions. Second operand 6 states. [2018-10-27 14:16:49,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 14:16:49,073 INFO L93 Difference]: Finished difference Result 34193 states and 53815 transitions. [2018-10-27 14:16:49,073 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 14:16:49,074 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 178 [2018-10-27 14:16:49,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 14:16:49,206 INFO L225 Difference]: With dead ends: 34193 [2018-10-27 14:16:49,206 INFO L226 Difference]: Without dead ends: 24403 [2018-10-27 14:16:49,278 INFO L605 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 [2018-10-27 14:16:49,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24403 states. [2018-10-27 14:16:49,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24403 to 24170. [2018-10-27 14:16:49,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24170 states. [2018-10-27 14:16:49,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24170 states to 24170 states and 34075 transitions. [2018-10-27 14:16:49,902 INFO L78 Accepts]: Start accepts. Automaton has 24170 states and 34075 transitions. Word has length 178 [2018-10-27 14:16:49,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 14:16:49,903 INFO L481 AbstractCegarLoop]: Abstraction has 24170 states and 34075 transitions. [2018-10-27 14:16:49,903 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 14:16:49,903 INFO L276 IsEmpty]: Start isEmpty. Operand 24170 states and 34075 transitions. [2018-10-27 14:16:49,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2018-10-27 14:16:49,911 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 14:16:49,912 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 14:16:49,912 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 14:16:49,912 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 14:16:49,912 INFO L82 PathProgramCache]: Analyzing trace with hash -1234851793, now seen corresponding path program 1 times [2018-10-27 14:16:49,913 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 14:16:49,913 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:16:49,913 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 14:16:49,914 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:16:49,914 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 14:16:49,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 14:16:50,193 WARN L179 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 14:16:50,400 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 14:16:50,401 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 14:16:50,401 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 14:16:50,401 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 14:16:50,402 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 14:16:50,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 14:16:50,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 14:16:50,403 INFO L87 Difference]: Start difference. First operand 24170 states and 34075 transitions. Second operand 6 states. [2018-10-27 14:17:03,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 14:17:03,425 INFO L93 Difference]: Finished difference Result 62339 states and 97863 transitions. [2018-10-27 14:17:03,432 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 14:17:03,432 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 189 [2018-10-27 14:17:03,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 14:17:03,624 INFO L225 Difference]: With dead ends: 62339 [2018-10-27 14:17:03,624 INFO L226 Difference]: Without dead ends: 38175 [2018-10-27 14:17:03,679 INFO L605 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 [2018-10-27 14:17:03,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38175 states. [2018-10-27 14:17:04,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38175 to 37978. [2018-10-27 14:17:04,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37978 states. [2018-10-27 14:17:04,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37978 states to 37978 states and 54437 transitions. [2018-10-27 14:17:04,653 INFO L78 Accepts]: Start accepts. Automaton has 37978 states and 54437 transitions. Word has length 189 [2018-10-27 14:17:04,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 14:17:04,655 INFO L481 AbstractCegarLoop]: Abstraction has 37978 states and 54437 transitions. [2018-10-27 14:17:04,655 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 14:17:04,655 INFO L276 IsEmpty]: Start isEmpty. Operand 37978 states and 54437 transitions. [2018-10-27 14:17:04,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2018-10-27 14:17:04,664 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 14:17:04,664 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 14:17:04,665 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 14:17:04,665 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 14:17:04,665 INFO L82 PathProgramCache]: Analyzing trace with hash 1204068448, now seen corresponding path program 1 times [2018-10-27 14:17:04,665 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 14:17:04,666 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:17:04,666 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 14:17:04,667 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:17:04,667 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 14:17:04,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 14:17:05,020 WARN L179 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 14:17:05,421 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 14:17:05,422 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 14:17:05,422 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 14:17:05,422 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 14:17:05,423 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 14:17:05,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 14:17:05,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 14:17:05,423 INFO L87 Difference]: Start difference. First operand 37978 states and 54437 transitions. Second operand 6 states. [2018-10-27 14:17:19,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 14:17:19,284 INFO L93 Difference]: Finished difference Result 83941 states and 123853 transitions. [2018-10-27 14:17:19,284 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 14:17:19,284 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 217 [2018-10-27 14:17:19,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 14:17:19,490 INFO L225 Difference]: With dead ends: 83941 [2018-10-27 14:17:19,491 INFO L226 Difference]: Without dead ends: 45969 [2018-10-27 14:17:19,595 INFO L605 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 [2018-10-27 14:17:19,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45969 states. [2018-10-27 14:17:20,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45969 to 45867. [2018-10-27 14:17:20,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45867 states. [2018-10-27 14:17:20,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45867 states to 45867 states and 62679 transitions. [2018-10-27 14:17:20,517 INFO L78 Accepts]: Start accepts. Automaton has 45867 states and 62679 transitions. Word has length 217 [2018-10-27 14:17:20,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 14:17:20,518 INFO L481 AbstractCegarLoop]: Abstraction has 45867 states and 62679 transitions. [2018-10-27 14:17:20,518 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 14:17:20,518 INFO L276 IsEmpty]: Start isEmpty. Operand 45867 states and 62679 transitions. [2018-10-27 14:17:20,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2018-10-27 14:17:20,535 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 14:17:20,536 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, 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] [2018-10-27 14:17:20,536 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 14:17:20,536 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 14:17:20,537 INFO L82 PathProgramCache]: Analyzing trace with hash 171861938, now seen corresponding path program 1 times [2018-10-27 14:17:20,537 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 14:17:20,538 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:17:20,538 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 14:17:20,538 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:17:20,538 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 14:17:20,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 14:17:20,840 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 200 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 14:17:20,841 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 14:17:20,841 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 14:17:20,842 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 268 with the following transitions: [2018-10-27 14:17:20,844 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], [2803], [2811], [2819], [2827], [2835], [2843], [2851], [2859], [2867], [2875], [2883], [2891], [2899], [2907], [2915], [2923], [2931], [2939], [2947], [2955], [2963], [2971], [2979], [2987], [2995], [3003], [3011], [3019], [3027], [3035], [3043], [3051], [3059], [3067], [3075], [3083], [3087], [3089], [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] [2018-10-27 14:17:20,894 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 14:17:20,894 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 14:17:21,734 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 14:17:21,736 INFO L272 AbstractInterpreter]: Visited 124 different actions 124 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-10-27 14:17:21,777 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 14:17:21,777 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 14:17:22,688 INFO L227 lantSequenceWeakener]: Weakened 243 states. On average, predicates are now at 71.81% of their original sizes. [2018-10-27 14:17:22,688 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 14:17:23,196 INFO L415 sIntCurrentIteration]: We unified 266 AI predicates to 266 [2018-10-27 14:17:23,196 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 14:17:23,197 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 14:17:23,198 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 14 [2018-10-27 14:17:23,198 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 14:17:23,199 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-27 14:17:23,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-27 14:17:23,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2018-10-27 14:17:23,199 INFO L87 Difference]: Start difference. First operand 45867 states and 62679 transitions. Second operand 10 states. [2018-10-27 14:17:29,095 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