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-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label14_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 07:54:13,994 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 07:54:13,996 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 07:54:14,008 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 07:54:14,008 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 07:54:14,009 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 07:54:14,011 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 07:54:14,012 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 07:54:14,014 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 07:54:14,015 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 07:54:14,016 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 07:54:14,016 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 07:54:14,017 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 07:54:14,018 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 07:54:14,019 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 07:54:14,020 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 07:54:14,021 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 07:54:14,023 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 07:54:14,025 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 07:54:14,026 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 07:54:14,027 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 07:54:14,029 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 07:54:14,031 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 07:54:14,031 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 07:54:14,032 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 07:54:14,033 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 07:54:14,034 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 07:54:14,034 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 07:54:14,035 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 07:54:14,036 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 07:54:14,036 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 07:54:14,037 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 07:54:14,037 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 07:54:14,038 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 07:54:14,038 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 07:54:14,039 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 07:54:14,040 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-10-27 07:54:14,055 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 07:54:14,055 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 07:54:14,056 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 07:54:14,056 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 07:54:14,057 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 07:54:14,057 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 07:54:14,057 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-27 07:54:14,057 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 07:54:14,057 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 07:54:14,058 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 07:54:14,058 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 07:54:14,058 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 07:54:14,058 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 07:54:14,058 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 07:54:14,059 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 07:54:14,059 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 07:54:14,059 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 07:54:14,060 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 07:54:14,060 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 07:54:14,060 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 07:54:14,060 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 07:54:14,060 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 07:54:14,061 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 07:54:14,061 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 07:54:14,061 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 07:54:14,061 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 07:54:14,061 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 07:54:14,062 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 07:54:14,062 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 07:54:14,062 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 07:54:14,062 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 07:54:14,062 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 07:54:14,063 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 07:54:14,063 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 07:54:14,063 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 07:54:14,063 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 07:54:14,129 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 07:54:14,145 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 07:54:14,149 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 07:54:14,151 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 07:54:14,151 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 07:54:14,152 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label14_true-unreach-call.c [2018-10-27 07:54:14,229 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/9504a4f0b/3e2e7c325ba7407e81526b1e3a8c7158/FLAGe23cdb909 [2018-10-27 07:54:15,065 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 07:54:15,066 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label14_true-unreach-call.c [2018-10-27 07:54:15,110 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/9504a4f0b/3e2e7c325ba7407e81526b1e3a8c7158/FLAGe23cdb909 [2018-10-27 07:54:15,132 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/9504a4f0b/3e2e7c325ba7407e81526b1e3a8c7158 [2018-10-27 07:54:15,144 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 07:54:15,146 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 07:54:15,147 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 07:54:15,147 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 07:54:15,154 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 07:54:15,155 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:54:15" (1/1) ... [2018-10-27 07:54:15,159 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@614a20c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:54:15, skipping insertion in model container [2018-10-27 07:54:15,159 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:54:15" (1/1) ... [2018-10-27 07:54:15,172 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 07:54:15,395 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 07:54:16,939 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 07:54:16,944 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 07:54:17,771 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 07:54:17,811 INFO L193 MainTranslator]: Completed translation [2018-10-27 07:54:17,812 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:54:17 WrapperNode [2018-10-27 07:54:17,812 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 07:54:17,813 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 07:54:17,813 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 07:54:17,814 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 07:54:17,825 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:54:17" (1/1) ... [2018-10-27 07:54:17,918 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:54:17" (1/1) ... [2018-10-27 07:54:18,477 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 07:54:18,478 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 07:54:18,478 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 07:54:18,478 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 07:54:18,492 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:54:17" (1/1) ... [2018-10-27 07:54:18,492 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:54:17" (1/1) ... [2018-10-27 07:54:18,536 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:54:17" (1/1) ... [2018-10-27 07:54:18,537 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:54:17" (1/1) ... [2018-10-27 07:54:18,672 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:54:17" (1/1) ... [2018-10-27 07:54:18,708 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:54:17" (1/1) ... [2018-10-27 07:54:18,777 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:54:17" (1/1) ... [2018-10-27 07:54:18,825 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 07:54:18,826 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 07:54:18,826 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 07:54:18,827 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 07:54:18,828 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:54:17" (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 07:54:18,900 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 07:54:18,900 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 07:54:18,901 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-27 07:54:18,901 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-27 07:54:18,901 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-27 07:54:18,901 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-27 07:54:18,901 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 07:54:18,903 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 07:54:18,903 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 07:54:18,903 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 07:54:18,904 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 07:54:18,904 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 07:54:18,904 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 07:54:18,907 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 07:54:29,541 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 07:54:29,542 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:54:29 BoogieIcfgContainer [2018-10-27 07:54:29,542 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 07:54:29,543 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 07:54:29,543 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 07:54:29,547 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 07:54:29,547 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 07:54:15" (1/3) ... [2018-10-27 07:54:29,548 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5491a4ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:54:29, skipping insertion in model container [2018-10-27 07:54:29,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:54:17" (2/3) ... [2018-10-27 07:54:29,549 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5491a4ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:54:29, skipping insertion in model container [2018-10-27 07:54:29,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:54:29" (3/3) ... [2018-10-27 07:54:29,550 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label14_true-unreach-call.c [2018-10-27 07:54:29,561 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 07:54:29,571 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 07:54:29,589 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 07:54:29,635 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 07:54:29,636 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 07:54:29,636 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 07:54:29,636 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 07:54:29,636 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 07:54:29,636 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 07:54:29,636 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 07:54:29,637 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 07:54:29,679 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-10-27 07:54:29,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-10-27 07:54:29,688 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:54:29,689 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] [2018-10-27 07:54:29,692 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:54:29,698 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:54:29,698 INFO L82 PathProgramCache]: Analyzing trace with hash 963614956, now seen corresponding path program 1 times [2018-10-27 07:54:29,701 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:54:29,760 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:54:29,760 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:54:29,761 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:54:29,761 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:54:29,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:54:30,219 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 07:54:30,335 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 07:54:30,338 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 07:54:30,338 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 07:54:30,338 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 07:54:30,344 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 07:54:30,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 07:54:30,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 07:54:30,363 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 3 states. [2018-10-27 07:54:39,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 07:54:39,150 INFO L93 Difference]: Finished difference Result 3097 states and 5707 transitions. [2018-10-27 07:54:39,150 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 07:54:39,152 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 48 [2018-10-27 07:54:39,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 07:54:39,193 INFO L225 Difference]: With dead ends: 3097 [2018-10-27 07:54:39,193 INFO L226 Difference]: Without dead ends: 1975 [2018-10-27 07:54:39,208 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 07:54:39,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1975 states. [2018-10-27 07:54:39,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1975 to 1974. [2018-10-27 07:54:39,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1974 states. [2018-10-27 07:54:39,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1974 states to 1974 states and 3284 transitions. [2018-10-27 07:54:39,398 INFO L78 Accepts]: Start accepts. Automaton has 1974 states and 3284 transitions. Word has length 48 [2018-10-27 07:54:39,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 07:54:39,399 INFO L481 AbstractCegarLoop]: Abstraction has 1974 states and 3284 transitions. [2018-10-27 07:54:39,400 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 07:54:39,400 INFO L276 IsEmpty]: Start isEmpty. Operand 1974 states and 3284 transitions. [2018-10-27 07:54:39,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-10-27 07:54:39,412 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:54:39,414 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:54:39,414 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:54:39,415 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:54:39,415 INFO L82 PathProgramCache]: Analyzing trace with hash -1268878372, now seen corresponding path program 1 times [2018-10-27 07:54:39,415 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:54:39,417 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:54:39,417 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:54:39,417 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:54:39,417 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:54:39,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:54:39,834 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 07:54:39,834 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 07:54:39,834 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-27 07:54:39,834 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 07:54:39,836 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 07:54:39,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 07:54:39,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-27 07:54:39,837 INFO L87 Difference]: Start difference. First operand 1974 states and 3284 transitions. Second operand 5 states. [2018-10-27 07:55:01,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 07:55:01,937 INFO L93 Difference]: Finished difference Result 5736 states and 9691 transitions. [2018-10-27 07:55:01,939 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-27 07:55:01,939 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 124 [2018-10-27 07:55:01,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 07:55:01,970 INFO L225 Difference]: With dead ends: 5736 [2018-10-27 07:55:01,970 INFO L226 Difference]: Without dead ends: 3768 [2018-10-27 07:55:01,977 INFO L605 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 [2018-10-27 07:55:01,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3768 states. [2018-10-27 07:55:02,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3768 to 3686. [2018-10-27 07:55:02,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3686 states. [2018-10-27 07:55:02,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3686 states to 3686 states and 5660 transitions. [2018-10-27 07:55:02,117 INFO L78 Accepts]: Start accepts. Automaton has 3686 states and 5660 transitions. Word has length 124 [2018-10-27 07:55:02,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 07:55:02,117 INFO L481 AbstractCegarLoop]: Abstraction has 3686 states and 5660 transitions. [2018-10-27 07:55:02,117 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 07:55:02,118 INFO L276 IsEmpty]: Start isEmpty. Operand 3686 states and 5660 transitions. [2018-10-27 07:55:02,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-10-27 07:55:02,131 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:55:02,131 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:55:02,131 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:55:02,133 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:55:02,133 INFO L82 PathProgramCache]: Analyzing trace with hash -594329152, now seen corresponding path program 1 times [2018-10-27 07:55:02,133 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:55:02,134 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:55:02,134 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:55:02,134 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:55:02,135 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:55:02,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:55:02,346 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 07:55:02,346 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 07:55:02,347 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-27 07:55:02,347 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 07:55:02,348 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 07:55:02,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 07:55:02,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-27 07:55:02,348 INFO L87 Difference]: Start difference. First operand 3686 states and 5660 transitions. Second operand 5 states. [2018-10-27 07:55:31,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 07:55:31,106 INFO L93 Difference]: Finished difference Result 13666 states and 21761 transitions. [2018-10-27 07:55:31,114 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-27 07:55:31,115 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 138 [2018-10-27 07:55:31,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 07:55:31,174 INFO L225 Difference]: With dead ends: 13666 [2018-10-27 07:55:31,174 INFO L226 Difference]: Without dead ends: 9986 [2018-10-27 07:55:31,199 INFO L605 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 [2018-10-27 07:55:31,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9986 states. [2018-10-27 07:55:31,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9986 to 9796. [2018-10-27 07:55:31,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9796 states. [2018-10-27 07:55:31,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9796 states to 9796 states and 14501 transitions. [2018-10-27 07:55:31,470 INFO L78 Accepts]: Start accepts. Automaton has 9796 states and 14501 transitions. Word has length 138 [2018-10-27 07:55:31,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 07:55:31,471 INFO L481 AbstractCegarLoop]: Abstraction has 9796 states and 14501 transitions. [2018-10-27 07:55:31,471 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 07:55:31,471 INFO L276 IsEmpty]: Start isEmpty. Operand 9796 states and 14501 transitions. [2018-10-27 07:55:31,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2018-10-27 07:55:31,476 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:55:31,476 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:55:31,477 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:55:31,477 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:55:31,477 INFO L82 PathProgramCache]: Analyzing trace with hash -221189476, now seen corresponding path program 1 times [2018-10-27 07:55:31,477 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:55:31,478 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:55:31,478 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:55:31,478 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:55:31,479 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:55:31,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:55:31,781 WARN L179 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 07:55:31,974 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 07:55:31,974 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 07:55:31,975 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 07:55:31,975 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 07:55:31,975 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 07:55:31,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 07:55:31,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 07:55:31,976 INFO L87 Difference]: Start difference. First operand 9796 states and 14501 transitions. Second operand 6 states. [2018-10-27 07:55:44,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 07:55:44,855 INFO L93 Difference]: Finished difference Result 34193 states and 53806 transitions. [2018-10-27 07:55:44,855 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 07:55:44,856 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 156 [2018-10-27 07:55:44,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 07:55:44,984 INFO L225 Difference]: With dead ends: 34193 [2018-10-27 07:55:44,985 INFO L226 Difference]: Without dead ends: 24403 [2018-10-27 07:55:45,062 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 07:55:45,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24403 states. [2018-10-27 07:55:45,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24403 to 24170. [2018-10-27 07:55:45,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24170 states. [2018-10-27 07:55:45,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24170 states to 24170 states and 34072 transitions. [2018-10-27 07:55:45,984 INFO L78 Accepts]: Start accepts. Automaton has 24170 states and 34072 transitions. Word has length 156 [2018-10-27 07:55:45,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 07:55:45,985 INFO L481 AbstractCegarLoop]: Abstraction has 24170 states and 34072 transitions. [2018-10-27 07:55:45,985 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 07:55:45,985 INFO L276 IsEmpty]: Start isEmpty. Operand 24170 states and 34072 transitions. [2018-10-27 07:55:45,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2018-10-27 07:55:45,990 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:55:45,990 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:55:45,990 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:55:45,990 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:55:45,991 INFO L82 PathProgramCache]: Analyzing trace with hash 1233336343, now seen corresponding path program 1 times [2018-10-27 07:55:45,991 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:55:45,992 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:55:45,992 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:55:45,992 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:55:45,992 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:55:46,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:55:46,282 WARN L179 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 07:55:46,675 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 07:55:46,675 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 07:55:46,675 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 07:55:46,675 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 07:55:46,676 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 07:55:46,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 07:55:46,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 07:55:46,677 INFO L87 Difference]: Start difference. First operand 24170 states and 34072 transitions. Second operand 6 states. [2018-10-27 07:55:57,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 07:55:57,183 INFO L93 Difference]: Finished difference Result 62341 states and 97861 transitions. [2018-10-27 07:55:57,187 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 07:55:57,187 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 167 [2018-10-27 07:55:57,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 07:55:57,360 INFO L225 Difference]: With dead ends: 62341 [2018-10-27 07:55:57,360 INFO L226 Difference]: Without dead ends: 38177 [2018-10-27 07:55:57,424 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 07:55:57,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38177 states. [2018-10-27 07:55:58,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38177 to 37980. [2018-10-27 07:55:58,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37980 states. [2018-10-27 07:55:58,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37980 states to 37980 states and 54438 transitions. [2018-10-27 07:55:58,724 INFO L78 Accepts]: Start accepts. Automaton has 37980 states and 54438 transitions. Word has length 167 [2018-10-27 07:55:58,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 07:55:58,725 INFO L481 AbstractCegarLoop]: Abstraction has 37980 states and 54438 transitions. [2018-10-27 07:55:58,725 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 07:55:58,725 INFO L276 IsEmpty]: Start isEmpty. Operand 37980 states and 54438 transitions. [2018-10-27 07:55:58,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2018-10-27 07:55:58,731 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:55:58,731 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:55:58,731 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:55:58,732 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:55:58,732 INFO L82 PathProgramCache]: Analyzing trace with hash -1930020088, now seen corresponding path program 1 times [2018-10-27 07:55:58,732 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:55:58,733 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:55:58,733 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:55:58,733 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:55:58,733 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:55:58,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:55:59,029 WARN L179 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 07:55:59,409 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 07:55:59,409 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 07:55:59,409 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 07:55:59,410 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 07:55:59,410 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 07:55:59,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 07:55:59,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 07:55:59,411 INFO L87 Difference]: Start difference. First operand 37980 states and 54438 transitions. Second operand 6 states. [2018-10-27 07:56:08,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 07:56:08,148 INFO L93 Difference]: Finished difference Result 83936 states and 123834 transitions. [2018-10-27 07:56:08,153 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 07:56:08,153 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 195 [2018-10-27 07:56:08,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 07:56:08,335 INFO L225 Difference]: With dead ends: 83936 [2018-10-27 07:56:08,335 INFO L226 Difference]: Without dead ends: 45962 [2018-10-27 07:56:08,433 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 07:56:08,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45962 states. [2018-10-27 07:56:09,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45962 to 45860. [2018-10-27 07:56:09,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45860 states. [2018-10-27 07:56:09,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45860 states to 45860 states and 62659 transitions. [2018-10-27 07:56:09,831 INFO L78 Accepts]: Start accepts. Automaton has 45860 states and 62659 transitions. Word has length 195 [2018-10-27 07:56:09,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 07:56:09,832 INFO L481 AbstractCegarLoop]: Abstraction has 45860 states and 62659 transitions. [2018-10-27 07:56:09,832 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 07:56:09,832 INFO L276 IsEmpty]: Start isEmpty. Operand 45860 states and 62659 transitions. [2018-10-27 07:56:09,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2018-10-27 07:56:09,845 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:56:09,845 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 07:56:09,846 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:56:09,846 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:56:09,846 INFO L82 PathProgramCache]: Analyzing trace with hash -559903430, now seen corresponding path program 1 times [2018-10-27 07:56:09,846 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:56:09,847 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:56:09,847 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:56:09,847 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:56:09,847 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:56:09,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:56:10,383 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 156 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 07:56:10,384 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 07:56:10,384 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 07:56:10,385 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 246 with the following transitions: [2018-10-27 07:56:10,387 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], [2911], [2913], [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] [2018-10-27 07:56:10,466 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 07:56:10,466 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 07:56:11,106 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 07:56:11,108 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 07:56:11,151 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:56:11,151 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 07:56:11,661 INFO L227 lantSequenceWeakener]: Weakened 234 states. On average, predicates are now at 71.26% of their original sizes. [2018-10-27 07:56:11,661 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 07:56:11,903 INFO L415 sIntCurrentIteration]: We unified 244 AI predicates to 244 [2018-10-27 07:56:11,904 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 07:56:11,905 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 07:56:11,905 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2018-10-27 07:56:11,905 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 07:56:11,906 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 07:56:11,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 07:56:11,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 07:56:11,906 INFO L87 Difference]: Start difference. First operand 45860 states and 62659 transitions. Second operand 6 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown