java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label58_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 15:48:48,539 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 15:48:48,541 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 15:48:48,552 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 15:48:48,553 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 15:48:48,554 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 15:48:48,555 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 15:48:48,557 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 15:48:48,558 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 15:48:48,559 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 15:48:48,560 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 15:48:48,560 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 15:48:48,561 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 15:48:48,562 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 15:48:48,563 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 15:48:48,564 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 15:48:48,565 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 15:48:48,566 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 15:48:48,568 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 15:48:48,570 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 15:48:48,571 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 15:48:48,572 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 15:48:48,574 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 15:48:48,575 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 15:48:48,575 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 15:48:48,576 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 15:48:48,577 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 15:48:48,577 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 15:48:48,578 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 15:48:48,579 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 15:48:48,579 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 15:48:48,580 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 15:48:48,580 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 15:48:48,580 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 15:48:48,581 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 15:48:48,582 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 15:48:48,582 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf [2018-11-07 15:48:48,602 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 15:48:48,602 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 15:48:48,603 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 15:48:48,603 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 15:48:48,603 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 15:48:48,604 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 15:48:48,604 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 15:48:48,604 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 15:48:48,604 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 15:48:48,604 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 15:48:48,605 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 15:48:48,605 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 15:48:48,605 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 15:48:48,605 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 15:48:48,606 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 15:48:48,606 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 15:48:48,607 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 15:48:48,607 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 15:48:48,607 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 15:48:48,607 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 15:48:48,607 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 15:48:48,607 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 15:48:48,608 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 15:48:48,608 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 15:48:48,608 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 15:48:48,608 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 15:48:48,608 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 15:48:48,609 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 15:48:48,609 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 15:48:48,609 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 15:48:48,610 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 15:48:48,610 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 15:48:48,610 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 15:48:48,610 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 15:48:48,670 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 15:48:48,683 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 15:48:48,686 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 15:48:48,688 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 15:48:48,688 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 15:48:48,689 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label58_true-unreach-call.c [2018-11-07 15:48:48,752 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cdaaad340/750d04e872464e689cd51e4cc5e1fdee/FLAG72464f498 [2018-11-07 15:48:49,524 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 15:48:49,525 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label58_true-unreach-call.c [2018-11-07 15:48:49,552 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cdaaad340/750d04e872464e689cd51e4cc5e1fdee/FLAG72464f498 [2018-11-07 15:48:49,573 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cdaaad340/750d04e872464e689cd51e4cc5e1fdee [2018-11-07 15:48:49,587 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 15:48:49,588 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 15:48:49,589 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 15:48:49,590 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 15:48:49,596 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 15:48:49,597 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:48:49" (1/1) ... [2018-11-07 15:48:49,600 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b4322c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:48:49, skipping insertion in model container [2018-11-07 15:48:49,600 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:48:49" (1/1) ... [2018-11-07 15:48:49,612 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 15:48:49,758 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 15:48:51,000 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 15:48:51,005 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 15:48:51,427 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 15:48:51,456 INFO L193 MainTranslator]: Completed translation [2018-11-07 15:48:51,457 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:48:51 WrapperNode [2018-11-07 15:48:51,457 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 15:48:51,458 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 15:48:51,458 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 15:48:51,458 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 15:48:51,468 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:48:51" (1/1) ... [2018-11-07 15:48:51,694 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:48:51" (1/1) ... [2018-11-07 15:48:51,703 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 15:48:51,704 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 15:48:51,704 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 15:48:51,704 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 15:48:51,715 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:48:51" (1/1) ... [2018-11-07 15:48:51,715 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:48:51" (1/1) ... [2018-11-07 15:48:51,741 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:48:51" (1/1) ... [2018-11-07 15:48:51,742 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:48:51" (1/1) ... [2018-11-07 15:48:51,835 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:48:51" (1/1) ... [2018-11-07 15:48:51,870 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:48:51" (1/1) ... [2018-11-07 15:48:51,898 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:48:51" (1/1) ... [2018-11-07 15:48:51,927 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 15:48:51,927 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 15:48:51,928 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 15:48:51,928 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 15:48:51,929 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:48:51" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 15:48:52,001 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 15:48:52,001 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 15:48:52,002 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 15:48:52,002 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 15:48:52,002 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 15:48:52,002 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 15:48:52,002 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 15:48:52,003 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 15:48:52,003 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 15:48:52,003 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 15:48:52,003 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 15:48:52,003 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 15:48:52,004 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 15:48:59,664 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 15:48:59,665 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:48:59 BoogieIcfgContainer [2018-11-07 15:48:59,665 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 15:48:59,666 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 15:48:59,666 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 15:48:59,670 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 15:48:59,670 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 03:48:49" (1/3) ... [2018-11-07 15:48:59,671 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22a27f5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:48:59, skipping insertion in model container [2018-11-07 15:48:59,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:48:51" (2/3) ... [2018-11-07 15:48:59,671 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22a27f5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:48:59, skipping insertion in model container [2018-11-07 15:48:59,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:48:59" (3/3) ... [2018-11-07 15:48:59,673 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label58_true-unreach-call.c [2018-11-07 15:48:59,683 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 15:48:59,693 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 15:48:59,710 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 15:48:59,768 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 15:48:59,769 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 15:48:59,769 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 15:48:59,769 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 15:48:59,769 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 15:48:59,769 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 15:48:59,770 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 15:48:59,770 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 15:48:59,829 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-11-07 15:48:59,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-11-07 15:48:59,843 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:48:59,844 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] [2018-11-07 15:48:59,848 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:48:59,854 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:48:59,855 INFO L82 PathProgramCache]: Analyzing trace with hash -1155307225, now seen corresponding path program 1 times [2018-11-07 15:48:59,857 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:48:59,916 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:48:59,916 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:48:59,917 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:48:59,917 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:49:00,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:49:00,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:49:00,363 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:49:00,364 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 15:49:00,364 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:49:00,370 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 15:49:00,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 15:49:00,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 15:49:00,392 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 3 states. [2018-11-07 15:49:06,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:49:06,461 INFO L93 Difference]: Finished difference Result 2251 states and 4322 transitions. [2018-11-07 15:49:06,462 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 15:49:06,464 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 47 [2018-11-07 15:49:06,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:49:06,493 INFO L225 Difference]: With dead ends: 2251 [2018-11-07 15:49:06,493 INFO L226 Difference]: Without dead ends: 1474 [2018-11-07 15:49:06,503 INFO L604 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 [2018-11-07 15:49:06,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2018-11-07 15:49:06,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1474. [2018-11-07 15:49:06,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2018-11-07 15:49:06,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2721 transitions. [2018-11-07 15:49:06,655 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2721 transitions. Word has length 47 [2018-11-07 15:49:06,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:49:06,656 INFO L480 AbstractCegarLoop]: Abstraction has 1474 states and 2721 transitions. [2018-11-07 15:49:06,656 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 15:49:06,657 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2721 transitions. [2018-11-07 15:49:06,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-11-07 15:49:06,664 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:49:06,665 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 15:49:06,665 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:49:06,665 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:49:06,666 INFO L82 PathProgramCache]: Analyzing trace with hash -1285233055, now seen corresponding path program 1 times [2018-11-07 15:49:06,666 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:49:06,667 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:49:06,667 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:49:06,667 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:49:06,668 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:49:06,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:49:07,010 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:49:07,010 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:49:07,010 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 15:49:07,011 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:49:07,013 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 15:49:07,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 15:49:07,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 15:49:07,014 INFO L87 Difference]: Start difference. First operand 1474 states and 2721 transitions. Second operand 6 states. [2018-11-07 15:49:16,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:49:16,274 INFO L93 Difference]: Finished difference Result 4419 states and 8244 transitions. [2018-11-07 15:49:16,276 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 15:49:16,276 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 136 [2018-11-07 15:49:16,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:49:16,298 INFO L225 Difference]: With dead ends: 4419 [2018-11-07 15:49:16,298 INFO L226 Difference]: Without dead ends: 2951 [2018-11-07 15:49:16,304 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 15:49:16,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2951 states. [2018-11-07 15:49:16,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2951 to 2928. [2018-11-07 15:49:16,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2928 states. [2018-11-07 15:49:16,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2928 states to 2928 states and 5087 transitions. [2018-11-07 15:49:16,410 INFO L78 Accepts]: Start accepts. Automaton has 2928 states and 5087 transitions. Word has length 136 [2018-11-07 15:49:16,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:49:16,411 INFO L480 AbstractCegarLoop]: Abstraction has 2928 states and 5087 transitions. [2018-11-07 15:49:16,411 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 15:49:16,411 INFO L276 IsEmpty]: Start isEmpty. Operand 2928 states and 5087 transitions. [2018-11-07 15:49:16,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2018-11-07 15:49:16,425 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:49:16,426 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 15:49:16,426 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:49:16,426 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:49:16,426 INFO L82 PathProgramCache]: Analyzing trace with hash 330900828, now seen corresponding path program 1 times [2018-11-07 15:49:16,426 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:49:16,428 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:49:16,428 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:49:16,429 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:49:16,429 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:49:16,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:49:16,779 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:49:16,780 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:49:16,780 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 15:49:16,780 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:49:16,781 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 15:49:16,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 15:49:16,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 15:49:16,782 INFO L87 Difference]: Start difference. First operand 2928 states and 5087 transitions. Second operand 6 states. [2018-11-07 15:49:25,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:49:25,181 INFO L93 Difference]: Finished difference Result 10194 states and 17948 transitions. [2018-11-07 15:49:25,181 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 15:49:25,181 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 183 [2018-11-07 15:49:25,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:49:25,228 INFO L225 Difference]: With dead ends: 10194 [2018-11-07 15:49:25,229 INFO L226 Difference]: Without dead ends: 7272 [2018-11-07 15:49:25,247 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 15:49:25,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7272 states. [2018-11-07 15:49:25,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7272 to 7208. [2018-11-07 15:49:25,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7208 states. [2018-11-07 15:49:25,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7208 states to 7208 states and 11881 transitions. [2018-11-07 15:49:25,477 INFO L78 Accepts]: Start accepts. Automaton has 7208 states and 11881 transitions. Word has length 183 [2018-11-07 15:49:25,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:49:25,478 INFO L480 AbstractCegarLoop]: Abstraction has 7208 states and 11881 transitions. [2018-11-07 15:49:25,478 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 15:49:25,478 INFO L276 IsEmpty]: Start isEmpty. Operand 7208 states and 11881 transitions. [2018-11-07 15:49:25,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2018-11-07 15:49:25,484 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:49:25,484 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 15:49:25,484 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:49:25,486 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:49:25,487 INFO L82 PathProgramCache]: Analyzing trace with hash 2489344, now seen corresponding path program 1 times [2018-11-07 15:49:25,487 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:49:25,488 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:49:25,488 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:49:25,488 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:49:25,488 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:49:25,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:49:25,803 WARN L179 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 15:49:26,195 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:49:26,196 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:49:26,196 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 15:49:26,196 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:49:26,197 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 15:49:26,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 15:49:26,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 15:49:26,197 INFO L87 Difference]: Start difference. First operand 7208 states and 11881 transitions. Second operand 6 states. [2018-11-07 15:49:31,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:49:31,456 INFO L93 Difference]: Finished difference Result 17365 states and 29107 transitions. [2018-11-07 15:49:31,456 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 15:49:31,456 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 185 [2018-11-07 15:49:31,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:49:31,515 INFO L225 Difference]: With dead ends: 17365 [2018-11-07 15:49:31,515 INFO L226 Difference]: Without dead ends: 10163 [2018-11-07 15:49:31,543 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 15:49:31,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10163 states. [2018-11-07 15:49:31,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10163 to 10108. [2018-11-07 15:49:31,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10108 states. [2018-11-07 15:49:31,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10108 states to 10108 states and 14258 transitions. [2018-11-07 15:49:31,813 INFO L78 Accepts]: Start accepts. Automaton has 10108 states and 14258 transitions. Word has length 185 [2018-11-07 15:49:31,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:49:31,813 INFO L480 AbstractCegarLoop]: Abstraction has 10108 states and 14258 transitions. [2018-11-07 15:49:31,814 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 15:49:31,814 INFO L276 IsEmpty]: Start isEmpty. Operand 10108 states and 14258 transitions. [2018-11-07 15:49:31,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2018-11-07 15:49:31,825 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:49:31,826 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 15:49:31,826 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:49:31,826 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:49:31,827 INFO L82 PathProgramCache]: Analyzing trace with hash 1317304803, now seen corresponding path program 1 times [2018-11-07 15:49:31,827 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:49:31,828 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:49:31,828 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:49:31,828 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:49:31,828 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:49:31,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:49:32,117 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2018-11-07 15:49:32,118 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:49:32,118 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 15:49:32,118 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:49:32,121 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 15:49:32,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 15:49:32,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 15:49:32,122 INFO L87 Difference]: Start difference. First operand 10108 states and 14258 transitions. Second operand 4 states. [2018-11-07 15:49:40,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:49:40,006 INFO L93 Difference]: Finished difference Result 28819 states and 41884 transitions. [2018-11-07 15:49:40,013 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 15:49:40,013 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 243 [2018-11-07 15:49:40,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:49:40,089 INFO L225 Difference]: With dead ends: 28819 [2018-11-07 15:49:40,090 INFO L226 Difference]: Without dead ends: 18717 [2018-11-07 15:49:40,141 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 15:49:40,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18717 states. [2018-11-07 15:49:40,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18717 to 18717. [2018-11-07 15:49:40,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18717 states. [2018-11-07 15:49:40,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18717 states to 18717 states and 26000 transitions. [2018-11-07 15:49:40,543 INFO L78 Accepts]: Start accepts. Automaton has 18717 states and 26000 transitions. Word has length 243 [2018-11-07 15:49:40,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:49:40,544 INFO L480 AbstractCegarLoop]: Abstraction has 18717 states and 26000 transitions. [2018-11-07 15:49:40,544 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 15:49:40,544 INFO L276 IsEmpty]: Start isEmpty. Operand 18717 states and 26000 transitions. [2018-11-07 15:49:40,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 398 [2018-11-07 15:49:40,582 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:49:40,583 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 15:49:40,583 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:49:40,583 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:49:40,583 INFO L82 PathProgramCache]: Analyzing trace with hash 1070733005, now seen corresponding path program 1 times [2018-11-07 15:49:40,583 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:49:40,584 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:49:40,585 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:49:40,585 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:49:40,585 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:49:40,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:49:40,874 WARN L179 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 15:49:41,113 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 80 proven. 67 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 15:49:41,114 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 15:49:41,114 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 15:49:41,115 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 398 with the following transitions: [2018-11-07 15:49:41,119 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1839], [1847], [1855], [1863], [1871], [1879], [1887], [1895], [1899], [1901], [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], [2124], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2269], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2329], [2333], [2337], [2341], [2345], [2349], [2353], [2357], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2585], [2589], [2593], [2597], [2601], [2605], [2609], [2613], [2617], [2621], [2625], [2629], [2633], [2637], [2641], [2645], [2649], [2653], [2657], [2661], [2665], [2669], [2673], [2677], [2681], [2685], [2689], [2693], [2697], [2701], [2705], [2709], [2713], [2717], [2721], [2725], [2729], [2733], [2737], [2741], [2745], [2749], [2753], [2757], [2761], [2765], [2769], [2773], [2777], [2781], [2785], [2789], [2793], [2797], [2801], [2805], [2809], [2813], [2817], [2821], [2825], [2829], [2833], [2837], [2841], [2845], [2849], [2853], [2857], [2861], [2865], [2869], [2873], [2877], [2881], [2885], [2889], [2893], [2897], [2901], [2905], [2909], [2913], [2917], [2921], [2925], [2929], [2933], [2937], [2941], [2945], [2948], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-11-07 15:49:41,183 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 15:49:41,183 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 15:49:42,626 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 15:49:42,628 INFO L272 AbstractInterpreter]: Visited 283 different actions 283 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 15:49:42,675 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:49:42,675 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 15:49:43,701 INFO L227 lantSequenceWeakener]: Weakened 388 states. On average, predicates are now at 77.6% of their original sizes. [2018-11-07 15:49:43,701 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 15:49:44,177 INFO L415 sIntCurrentIteration]: We unified 396 AI predicates to 396 [2018-11-07 15:49:44,177 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 15:49:44,180 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 15:49:44,180 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [5] total 11 [2018-11-07 15:49:44,180 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:49:44,181 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-07 15:49:44,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-07 15:49:44,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-11-07 15:49:44,182 INFO L87 Difference]: Start difference. First operand 18717 states and 26000 transitions. Second operand 8 states. [2018-11-07 15:49:52,656 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown