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/Problem18_label05_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 08:39:31,531 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 08:39:31,534 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 08:39:31,550 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 08:39:31,550 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 08:39:31,551 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 08:39:31,553 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 08:39:31,554 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 08:39:31,556 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 08:39:31,557 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 08:39:31,558 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 08:39:31,558 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 08:39:31,559 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 08:39:31,560 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 08:39:31,561 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 08:39:31,562 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 08:39:31,563 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 08:39:31,568 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 08:39:31,573 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 08:39:31,575 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 08:39:31,576 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 08:39:31,577 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 08:39:31,583 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 08:39:31,583 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 08:39:31,584 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 08:39:31,585 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 08:39:31,586 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 08:39:31,586 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 08:39:31,587 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 08:39:31,588 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 08:39:31,588 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 08:39:31,589 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 08:39:31,589 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 08:39:31,589 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 08:39:31,590 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 08:39:31,591 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 08:39:31,591 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 08:39:31,607 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 08:39:31,607 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 08:39:31,608 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 08:39:31,608 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 08:39:31,608 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 08:39:31,609 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 08:39:31,609 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-27 08:39:31,609 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 08:39:31,609 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 08:39:31,609 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 08:39:31,609 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 08:39:31,610 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 08:39:31,610 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 08:39:31,610 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 08:39:31,611 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 08:39:31,611 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 08:39:31,611 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 08:39:31,611 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 08:39:31,612 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 08:39:31,612 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 08:39:31,613 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 08:39:31,613 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 08:39:31,613 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 08:39:31,613 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 08:39:31,613 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 08:39:31,614 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 08:39:31,614 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 08:39:31,614 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 08:39:31,615 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 08:39:31,615 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 08:39:31,615 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 08:39:31,615 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 08:39:31,615 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 08:39:31,616 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 08:39:31,616 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 08:39:31,617 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 08:39:31,685 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 08:39:31,701 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 08:39:31,706 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 08:39:31,708 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 08:39:31,708 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 08:39:31,710 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label05_true-unreach-call.c [2018-10-27 08:39:31,775 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ee8711a10/959540bf1a4343369264be432946cde5/FLAG7ed77bba8 [2018-10-27 08:39:32,512 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 08:39:32,513 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label05_true-unreach-call.c [2018-10-27 08:39:32,540 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ee8711a10/959540bf1a4343369264be432946cde5/FLAG7ed77bba8 [2018-10-27 08:39:32,556 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ee8711a10/959540bf1a4343369264be432946cde5 [2018-10-27 08:39:32,568 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 08:39:32,571 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 08:39:32,572 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 08:39:32,573 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 08:39:32,581 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 08:39:32,582 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 08:39:32" (1/1) ... [2018-10-27 08:39:32,585 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f7cfdde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:39:32, skipping insertion in model container [2018-10-27 08:39:32,586 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 08:39:32" (1/1) ... [2018-10-27 08:39:32,597 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 08:39:32,741 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 08:39:33,768 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 08:39:33,773 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 08:39:34,197 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 08:39:34,227 INFO L193 MainTranslator]: Completed translation [2018-10-27 08:39:34,228 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:39:34 WrapperNode [2018-10-27 08:39:34,228 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 08:39:34,229 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 08:39:34,230 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 08:39:34,230 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 08:39:34,240 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:39:34" (1/1) ... [2018-10-27 08:39:34,302 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:39:34" (1/1) ... [2018-10-27 08:39:34,658 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 08:39:34,658 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 08:39:34,659 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 08:39:34,659 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 08:39:34,670 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:39:34" (1/1) ... [2018-10-27 08:39:34,670 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:39:34" (1/1) ... [2018-10-27 08:39:34,685 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:39:34" (1/1) ... [2018-10-27 08:39:34,685 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:39:34" (1/1) ... [2018-10-27 08:39:34,759 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:39:34" (1/1) ... [2018-10-27 08:39:34,797 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:39:34" (1/1) ... [2018-10-27 08:39:34,816 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:39:34" (1/1) ... [2018-10-27 08:39:34,840 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 08:39:34,841 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 08:39:34,841 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 08:39:34,841 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 08:39:34,842 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:39:34" (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 08:39:34,910 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 08:39:34,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 08:39:34,910 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-27 08:39:34,911 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-27 08:39:34,911 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 08:39:34,911 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 08:39:34,911 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 08:39:34,911 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 08:39:34,912 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 08:39:34,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 08:39:34,912 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 08:39:34,912 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 08:39:43,033 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 08:39:43,034 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 08:39:43 BoogieIcfgContainer [2018-10-27 08:39:43,035 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 08:39:43,036 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 08:39:43,036 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 08:39:43,040 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 08:39:43,040 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 08:39:32" (1/3) ... [2018-10-27 08:39:43,041 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19cbea04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 08:39:43, skipping insertion in model container [2018-10-27 08:39:43,041 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:39:34" (2/3) ... [2018-10-27 08:39:43,041 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19cbea04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 08:39:43, skipping insertion in model container [2018-10-27 08:39:43,042 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 08:39:43" (3/3) ... [2018-10-27 08:39:43,044 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label05_true-unreach-call.c [2018-10-27 08:39:43,055 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 08:39:43,066 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 08:39:43,084 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 08:39:43,130 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 08:39:43,130 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 08:39:43,130 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 08:39:43,130 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 08:39:43,130 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 08:39:43,131 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 08:39:43,131 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 08:39:43,131 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 08:39:43,168 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-10-27 08:39:43,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-10-27 08:39:43,177 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:39:43,178 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] [2018-10-27 08:39:43,181 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:39:43,187 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:39:43,187 INFO L82 PathProgramCache]: Analyzing trace with hash -1029134209, now seen corresponding path program 1 times [2018-10-27 08:39:43,190 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:39:43,244 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:39:43,244 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:39:43,245 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:39:43,245 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:39:43,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:39:43,715 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 08:39:43,718 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:39:43,719 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 08:39:43,719 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:39:43,726 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 08:39:43,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 08:39:43,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 08:39:43,747 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 3 states. [2018-10-27 08:39:49,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:39:49,776 INFO L93 Difference]: Finished difference Result 2251 states and 4322 transitions. [2018-10-27 08:39:49,776 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 08:39:49,778 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 45 [2018-10-27 08:39:49,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:39:49,824 INFO L225 Difference]: With dead ends: 2251 [2018-10-27 08:39:49,824 INFO L226 Difference]: Without dead ends: 1474 [2018-10-27 08:39:49,840 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 08:39:49,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2018-10-27 08:39:50,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1474. [2018-10-27 08:39:50,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2018-10-27 08:39:50,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2715 transitions. [2018-10-27 08:39:50,022 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2715 transitions. Word has length 45 [2018-10-27 08:39:50,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:39:50,022 INFO L481 AbstractCegarLoop]: Abstraction has 1474 states and 2715 transitions. [2018-10-27 08:39:50,023 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 08:39:50,023 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2715 transitions. [2018-10-27 08:39:50,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-10-27 08:39:50,030 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:39:50,030 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:39:50,030 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:39:50,031 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:39:50,031 INFO L82 PathProgramCache]: Analyzing trace with hash -1760973291, now seen corresponding path program 1 times [2018-10-27 08:39:50,031 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:39:50,032 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:39:50,033 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:39:50,033 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:39:50,033 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:39:50,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:39:50,398 WARN L179 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 08:39:50,623 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:39:50,623 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:39:50,623 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-27 08:39:50,624 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:39:50,626 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 08:39:50,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 08:39:50,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-27 08:39:50,628 INFO L87 Difference]: Start difference. First operand 1474 states and 2715 transitions. Second operand 5 states. [2018-10-27 08:39:59,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:39:59,621 INFO L93 Difference]: Finished difference Result 4419 states and 8226 transitions. [2018-10-27 08:39:59,623 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 08:39:59,623 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 116 [2018-10-27 08:39:59,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:39:59,643 INFO L225 Difference]: With dead ends: 4419 [2018-10-27 08:39:59,643 INFO L226 Difference]: Without dead ends: 2951 [2018-10-27 08:39:59,648 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 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 08:39:59,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2951 states. [2018-10-27 08:39:59,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2951 to 2925. [2018-10-27 08:39:59,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2925 states. [2018-10-27 08:39:59,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2925 states to 2925 states and 4901 transitions. [2018-10-27 08:39:59,735 INFO L78 Accepts]: Start accepts. Automaton has 2925 states and 4901 transitions. Word has length 116 [2018-10-27 08:39:59,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:39:59,735 INFO L481 AbstractCegarLoop]: Abstraction has 2925 states and 4901 transitions. [2018-10-27 08:39:59,735 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 08:39:59,736 INFO L276 IsEmpty]: Start isEmpty. Operand 2925 states and 4901 transitions. [2018-10-27 08:39:59,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2018-10-27 08:39:59,739 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:39:59,740 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:39:59,740 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:39:59,740 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:39:59,741 INFO L82 PathProgramCache]: Analyzing trace with hash 1097208028, now seen corresponding path program 1 times [2018-10-27 08:39:59,741 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:39:59,742 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:39:59,742 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:39:59,742 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:39:59,742 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:39:59,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:39:59,911 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:39:59,911 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:39:59,912 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 08:39:59,912 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:39:59,912 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 08:39:59,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 08:39:59,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-27 08:39:59,913 INFO L87 Difference]: Start difference. First operand 2925 states and 4901 transitions. Second operand 6 states. [2018-10-27 08:40:12,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:40:12,264 INFO L93 Difference]: Finished difference Result 11199 states and 19606 transitions. [2018-10-27 08:40:12,269 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-27 08:40:12,269 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 121 [2018-10-27 08:40:12,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:40:12,334 INFO L225 Difference]: With dead ends: 11199 [2018-10-27 08:40:12,335 INFO L226 Difference]: Without dead ends: 8280 [2018-10-27 08:40:12,365 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-10-27 08:40:12,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8280 states. [2018-10-27 08:40:12,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8280 to 8202. [2018-10-27 08:40:12,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8202 states. [2018-10-27 08:40:12,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8202 states to 8202 states and 12123 transitions. [2018-10-27 08:40:12,618 INFO L78 Accepts]: Start accepts. Automaton has 8202 states and 12123 transitions. Word has length 121 [2018-10-27 08:40:12,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:40:12,618 INFO L481 AbstractCegarLoop]: Abstraction has 8202 states and 12123 transitions. [2018-10-27 08:40:12,619 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 08:40:12,619 INFO L276 IsEmpty]: Start isEmpty. Operand 8202 states and 12123 transitions. [2018-10-27 08:40:12,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2018-10-27 08:40:12,627 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:40:12,627 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:40:12,627 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:40:12,632 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:40:12,632 INFO L82 PathProgramCache]: Analyzing trace with hash 652626716, now seen corresponding path program 1 times [2018-10-27 08:40:12,632 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:40:12,633 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:40:12,633 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:40:12,634 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:40:12,634 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:40:12,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:40:12,948 WARN L179 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 08:40:13,082 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:40:13,082 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:40:13,083 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 08:40:13,083 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:40:13,083 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 08:40:13,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 08:40:13,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 08:40:13,084 INFO L87 Difference]: Start difference. First operand 8202 states and 12123 transitions. Second operand 6 states. [2018-10-27 08:40:18,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:40:18,918 INFO L93 Difference]: Finished difference Result 20964 states and 31521 transitions. [2018-10-27 08:40:18,919 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 08:40:18,919 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 153 [2018-10-27 08:40:18,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:40:19,005 INFO L225 Difference]: With dead ends: 20964 [2018-10-27 08:40:19,005 INFO L226 Difference]: Without dead ends: 12768 [2018-10-27 08:40:19,045 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 08:40:19,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12768 states. [2018-10-27 08:40:19,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12768 to 12710. [2018-10-27 08:40:19,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12710 states. [2018-10-27 08:40:19,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12710 states to 12710 states and 17130 transitions. [2018-10-27 08:40:19,379 INFO L78 Accepts]: Start accepts. Automaton has 12710 states and 17130 transitions. Word has length 153 [2018-10-27 08:40:19,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:40:19,379 INFO L481 AbstractCegarLoop]: Abstraction has 12710 states and 17130 transitions. [2018-10-27 08:40:19,379 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 08:40:19,380 INFO L276 IsEmpty]: Start isEmpty. Operand 12710 states and 17130 transitions. [2018-10-27 08:40:19,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2018-10-27 08:40:19,386 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:40:19,386 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 08:40:19,386 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:40:19,387 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:40:19,387 INFO L82 PathProgramCache]: Analyzing trace with hash 504323522, now seen corresponding path program 1 times [2018-10-27 08:40:19,387 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:40:19,391 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:40:19,391 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:40:19,391 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:40:19,391 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:40:19,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:40:19,666 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 154 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:40:19,666 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:40:19,666 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:40:19,667 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 233 with the following transitions: [2018-10-27 08:40:19,669 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1839], [1847], [1855], [1863], [1871], [1879], [1883], [1885], [1888], [1896], [1904], [1912], [1920], [1928], [1936], [1944], [1952], [1960], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2156], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2264], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-10-27 08:40:19,718 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:40:19,718 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:40:20,226 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 08:40:20,228 INFO L272 AbstractInterpreter]: Visited 112 different actions 112 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-27 08:40:20,262 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:40:20,262 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 08:40:20,781 INFO L227 lantSequenceWeakener]: Weakened 223 states. On average, predicates are now at 77.86% of their original sizes. [2018-10-27 08:40:20,782 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 08:40:21,035 INFO L415 sIntCurrentIteration]: We unified 231 AI predicates to 231 [2018-10-27 08:40:21,035 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 08:40:21,036 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 08:40:21,036 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2018-10-27 08:40:21,036 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:40:21,037 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 08:40:21,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 08:40:21,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 08:40:21,038 INFO L87 Difference]: Start difference. First operand 12710 states and 17130 transitions. Second operand 6 states. [2018-10-27 08:42:23,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:42:23,524 INFO L93 Difference]: Finished difference Result 26119 states and 35031 transitions. [2018-10-27 08:42:23,524 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-27 08:42:23,524 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 232 [2018-10-27 08:42:23,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:42:23,578 INFO L225 Difference]: With dead ends: 26119 [2018-10-27 08:42:23,578 INFO L226 Difference]: Without dead ends: 13415 [2018-10-27 08:42:23,625 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 232 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-10-27 08:42:23,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13415 states. [2018-10-27 08:42:23,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13415 to 13413. [2018-10-27 08:42:23,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13413 states. [2018-10-27 08:42:23,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13413 states to 13413 states and 17845 transitions. [2018-10-27 08:42:23,940 INFO L78 Accepts]: Start accepts. Automaton has 13413 states and 17845 transitions. Word has length 232 [2018-10-27 08:42:23,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:42:23,941 INFO L481 AbstractCegarLoop]: Abstraction has 13413 states and 17845 transitions. [2018-10-27 08:42:23,941 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 08:42:23,941 INFO L276 IsEmpty]: Start isEmpty. Operand 13413 states and 17845 transitions. [2018-10-27 08:42:23,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 420 [2018-10-27 08:42:23,953 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:42:23,953 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:42:23,954 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:42:23,954 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:42:23,954 INFO L82 PathProgramCache]: Analyzing trace with hash -1582683708, now seen corresponding path program 1 times [2018-10-27 08:42:23,955 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:42:23,956 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:42:23,956 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:42:23,956 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:42:23,957 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:42:23,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:42:24,480 WARN L179 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-27 08:42:24,682 WARN L179 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-27 08:42:24,911 WARN L179 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-27 08:42:25,464 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 173 proven. 203 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-27 08:42:25,464 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:42:25,464 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:42:25,465 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 420 with the following transitions: [2018-10-27 08:42:25,465 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1839], [1847], [1855], [1863], [1871], [1879], [1883], [1885], [1888], [1896], [1904], [1912], [1920], [1928], [1936], [1944], [1952], [1960], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2156], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2264], [2265], [2269], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2329], [2333], [2337], [2341], [2345], [2349], [2353], [2357], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2584], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-10-27 08:42:25,474 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:42:25,475 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:42:25,685 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 08:42:25,685 INFO L272 AbstractInterpreter]: Visited 196 different actions 385 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-27 08:42:25,695 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:42:25,695 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 08:42:26,110 INFO L227 lantSequenceWeakener]: Weakened 416 states. On average, predicates are now at 77.65% of their original sizes. [2018-10-27 08:42:26,111 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 08:42:26,522 INFO L415 sIntCurrentIteration]: We unified 418 AI predicates to 418 [2018-10-27 08:42:26,523 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 08:42:26,523 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 08:42:26,523 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 19 [2018-10-27 08:42:26,523 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:42:26,524 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-27 08:42:26,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-27 08:42:26,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-10-27 08:42:26,524 INFO L87 Difference]: Start difference. First operand 13413 states and 17845 transitions. Second operand 10 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown