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_label53_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 15:48:08,727 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 15:48:08,730 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 15:48:08,744 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 15:48:08,744 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 15:48:08,746 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 15:48:08,747 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 15:48:08,752 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 15:48:08,754 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 15:48:08,755 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 15:48:08,756 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 15:48:08,756 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 15:48:08,757 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 15:48:08,758 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 15:48:08,760 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 15:48:08,760 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 15:48:08,761 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 15:48:08,763 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 15:48:08,765 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 15:48:08,767 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 15:48:08,768 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 15:48:08,769 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 15:48:08,772 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 15:48:08,772 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 15:48:08,772 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 15:48:08,773 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 15:48:08,774 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 15:48:08,775 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 15:48:08,776 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 15:48:08,777 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 15:48:08,777 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 15:48:08,778 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 15:48:08,778 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 15:48:08,779 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 15:48:08,780 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 15:48:08,780 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 15:48:08,781 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 15:48:08,796 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 15:48:08,797 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 15:48:08,798 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 15:48:08,798 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 15:48:08,798 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 15:48:08,799 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 15:48:08,799 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 15:48:08,799 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 15:48:08,799 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 15:48:08,799 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 15:48:08,800 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 15:48:08,800 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 15:48:08,801 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 15:48:08,801 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 15:48:08,801 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 15:48:08,801 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 15:48:08,801 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 15:48:08,802 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 15:48:08,802 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 15:48:08,802 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 15:48:08,802 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 15:48:08,802 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 15:48:08,803 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 15:48:08,803 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 15:48:08,803 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 15:48:08,803 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 15:48:08,803 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 15:48:08,804 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 15:48:08,804 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 15:48:08,804 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 15:48:08,804 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 15:48:08,805 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 15:48:08,805 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 15:48:08,805 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 15:48:08,848 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 15:48:08,861 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 15:48:08,865 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 15:48:08,867 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 15:48:08,867 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 15:48:08,868 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label53_true-unreach-call.c [2018-11-07 15:48:08,936 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e394dfaaa/9490599b544040c29ece0b0714777fd1/FLAG474e55494 [2018-11-07 15:48:09,772 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 15:48:09,774 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label53_true-unreach-call.c [2018-11-07 15:48:09,805 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e394dfaaa/9490599b544040c29ece0b0714777fd1/FLAG474e55494 [2018-11-07 15:48:09,823 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e394dfaaa/9490599b544040c29ece0b0714777fd1 [2018-11-07 15:48:09,839 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 15:48:09,841 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 15:48:09,843 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 15:48:09,843 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 15:48:09,850 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 15:48:09,851 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:48:09" (1/1) ... [2018-11-07 15:48:09,854 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60fab143 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:48:09, skipping insertion in model container [2018-11-07 15:48:09,854 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:48:09" (1/1) ... [2018-11-07 15:48:09,867 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 15:48:10,013 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 15:48:11,085 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 15:48:11,090 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 15:48:11,555 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 15:48:11,588 INFO L193 MainTranslator]: Completed translation [2018-11-07 15:48:11,588 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:48:11 WrapperNode [2018-11-07 15:48:11,589 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 15:48:11,590 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 15:48:11,590 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 15:48:11,590 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 15:48:11,603 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:48:11" (1/1) ... [2018-11-07 15:48:11,921 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:48:11" (1/1) ... [2018-11-07 15:48:11,930 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 15:48:11,930 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 15:48:11,930 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 15:48:11,930 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 15:48:11,941 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:48:11" (1/1) ... [2018-11-07 15:48:11,941 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:48:11" (1/1) ... [2018-11-07 15:48:11,961 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:48:11" (1/1) ... [2018-11-07 15:48:11,962 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:48:11" (1/1) ... [2018-11-07 15:48:12,051 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:48:11" (1/1) ... [2018-11-07 15:48:12,107 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:48:11" (1/1) ... [2018-11-07 15:48:12,143 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:48:11" (1/1) ... [2018-11-07 15:48:12,173 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 15:48:12,173 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 15:48:12,174 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 15:48:12,174 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 15:48:12,175 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:48:11" (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 15:48:12,251 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 15:48:12,252 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 15:48:12,252 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 15:48:12,252 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 15:48:12,252 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 15:48:12,253 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 15:48:12,253 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 15:48:12,253 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 15:48:12,253 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 15:48:12,254 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 15:48:12,254 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 15:48:12,254 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 15:48:12,254 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 15:48:21,293 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 15:48:21,293 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:48:21 BoogieIcfgContainer [2018-11-07 15:48:21,293 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 15:48:21,294 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 15:48:21,294 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 15:48:21,298 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 15:48:21,298 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 03:48:09" (1/3) ... [2018-11-07 15:48:21,299 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67f59dc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:48:21, skipping insertion in model container [2018-11-07 15:48:21,299 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:48:11" (2/3) ... [2018-11-07 15:48:21,299 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67f59dc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:48:21, skipping insertion in model container [2018-11-07 15:48:21,300 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:48:21" (3/3) ... [2018-11-07 15:48:21,301 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label53_true-unreach-call.c [2018-11-07 15:48:21,312 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 15:48:21,322 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 15:48:21,340 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 15:48:21,386 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 15:48:21,386 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 15:48:21,386 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 15:48:21,386 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 15:48:21,387 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 15:48:21,387 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 15:48:21,387 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 15:48:21,387 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 15:48:21,428 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-11-07 15:48:21,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-11-07 15:48:21,437 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:48:21,438 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] [2018-11-07 15:48:21,440 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:48:21,446 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:48:21,446 INFO L82 PathProgramCache]: Analyzing trace with hash 861122892, now seen corresponding path program 1 times [2018-11-07 15:48:21,448 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:48:21,497 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:48:21,497 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:48:21,497 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:48:21,498 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:48:21,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:48:21,924 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 15:48:21,927 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:48:21,927 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 15:48:21,927 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:48:21,934 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 15:48:21,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 15:48:21,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 15:48:21,953 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 3 states. [2018-11-07 15:48:29,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:48:29,183 INFO L93 Difference]: Finished difference Result 2251 states and 4322 transitions. [2018-11-07 15:48:29,184 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 15:48:29,185 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 40 [2018-11-07 15:48:29,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:48:29,225 INFO L225 Difference]: With dead ends: 2251 [2018-11-07 15:48:29,226 INFO L226 Difference]: Without dead ends: 1474 [2018-11-07 15:48:29,241 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 15:48:29,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2018-11-07 15:48:29,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1474. [2018-11-07 15:48:29,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2018-11-07 15:48:29,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2721 transitions. [2018-11-07 15:48:29,401 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2721 transitions. Word has length 40 [2018-11-07 15:48:29,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:48:29,401 INFO L480 AbstractCegarLoop]: Abstraction has 1474 states and 2721 transitions. [2018-11-07 15:48:29,402 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 15:48:29,402 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2721 transitions. [2018-11-07 15:48:29,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2018-11-07 15:48:29,414 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:48:29,414 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:48:29,415 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:48:29,415 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:48:29,415 INFO L82 PathProgramCache]: Analyzing trace with hash -1815461261, now seen corresponding path program 1 times [2018-11-07 15:48:29,415 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:48:29,418 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:48:29,418 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:48:29,418 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:48:29,419 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:48:29,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:48:29,764 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:48:29,764 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:48:29,765 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 15:48:29,765 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:48:29,767 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 15:48:29,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 15:48:29,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 15:48:29,768 INFO L87 Difference]: Start difference. First operand 1474 states and 2721 transitions. Second operand 6 states. [2018-11-07 15:48:42,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:48:42,062 INFO L93 Difference]: Finished difference Result 4419 states and 8244 transitions. [2018-11-07 15:48:42,063 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 15:48:42,063 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 129 [2018-11-07 15:48:42,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:48:42,090 INFO L225 Difference]: With dead ends: 4419 [2018-11-07 15:48:42,090 INFO L226 Difference]: Without dead ends: 2951 [2018-11-07 15:48:42,096 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 15:48:42,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2951 states. [2018-11-07 15:48:42,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2951 to 2928. [2018-11-07 15:48:42,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2928 states. [2018-11-07 15:48:42,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2928 states to 2928 states and 5087 transitions. [2018-11-07 15:48:42,210 INFO L78 Accepts]: Start accepts. Automaton has 2928 states and 5087 transitions. Word has length 129 [2018-11-07 15:48:42,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:48:42,211 INFO L480 AbstractCegarLoop]: Abstraction has 2928 states and 5087 transitions. [2018-11-07 15:48:42,211 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 15:48:42,211 INFO L276 IsEmpty]: Start isEmpty. Operand 2928 states and 5087 transitions. [2018-11-07 15:48:42,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-11-07 15:48:42,227 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:48:42,228 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:48:42,228 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:48:42,228 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:48:42,228 INFO L82 PathProgramCache]: Analyzing trace with hash 1289606006, now seen corresponding path program 1 times [2018-11-07 15:48:42,229 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:48:42,230 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:48:42,230 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:48:42,231 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:48:42,232 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:48:42,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:48:42,621 WARN L179 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 15:48:42,948 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:48:42,948 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:48:42,948 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 15:48:42,949 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:48:42,949 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 15:48:42,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 15:48:42,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 15:48:42,950 INFO L87 Difference]: Start difference. First operand 2928 states and 5087 transitions. Second operand 6 states. [2018-11-07 15:48:51,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:48:51,791 INFO L93 Difference]: Finished difference Result 10194 states and 17948 transitions. [2018-11-07 15:48:51,791 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 15:48:51,791 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 176 [2018-11-07 15:48:51,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:48:51,838 INFO L225 Difference]: With dead ends: 10194 [2018-11-07 15:48:51,838 INFO L226 Difference]: Without dead ends: 7272 [2018-11-07 15:48:51,857 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 15:48:51,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7272 states. [2018-11-07 15:48:52,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7272 to 7208. [2018-11-07 15:48:52,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7208 states. [2018-11-07 15:48:52,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7208 states to 7208 states and 11881 transitions. [2018-11-07 15:48:52,085 INFO L78 Accepts]: Start accepts. Automaton has 7208 states and 11881 transitions. Word has length 176 [2018-11-07 15:48:52,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:48:52,086 INFO L480 AbstractCegarLoop]: Abstraction has 7208 states and 11881 transitions. [2018-11-07 15:48:52,086 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 15:48:52,086 INFO L276 IsEmpty]: Start isEmpty. Operand 7208 states and 11881 transitions. [2018-11-07 15:48:52,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-11-07 15:48:52,090 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:48:52,090 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:48:52,091 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:48:52,091 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:48:52,091 INFO L82 PathProgramCache]: Analyzing trace with hash -680969838, now seen corresponding path program 1 times [2018-11-07 15:48:52,091 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:48:52,092 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:48:52,092 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:48:52,092 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:48:52,093 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:48:52,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:48:52,392 WARN L179 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 15:48:52,723 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:48:52,723 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:48:52,723 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 15:48:52,723 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:48:52,724 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 15:48:52,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 15:48:52,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 15:48:52,725 INFO L87 Difference]: Start difference. First operand 7208 states and 11881 transitions. Second operand 6 states. [2018-11-07 15:48:58,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:48:58,033 INFO L93 Difference]: Finished difference Result 17365 states and 29107 transitions. [2018-11-07 15:48:58,033 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 15:48:58,033 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 178 [2018-11-07 15:48:58,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:48:58,084 INFO L225 Difference]: With dead ends: 17365 [2018-11-07 15:48:58,085 INFO L226 Difference]: Without dead ends: 10163 [2018-11-07 15:48:58,111 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 15:48:58,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10163 states. [2018-11-07 15:48:58,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10163 to 10108. [2018-11-07 15:48:58,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10108 states. [2018-11-07 15:48:58,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10108 states to 10108 states and 14258 transitions. [2018-11-07 15:48:58,341 INFO L78 Accepts]: Start accepts. Automaton has 10108 states and 14258 transitions. Word has length 178 [2018-11-07 15:48:58,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:48:58,341 INFO L480 AbstractCegarLoop]: Abstraction has 10108 states and 14258 transitions. [2018-11-07 15:48:58,341 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 15:48:58,342 INFO L276 IsEmpty]: Start isEmpty. Operand 10108 states and 14258 transitions. [2018-11-07 15:48:58,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2018-11-07 15:48:58,350 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:48:58,350 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 15:48:58,351 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:48:58,351 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:48:58,351 INFO L82 PathProgramCache]: Analyzing trace with hash 1490762096, now seen corresponding path program 1 times [2018-11-07 15:48:58,351 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:48:58,352 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:48:58,353 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:48:58,353 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:48:58,353 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:48:58,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:48:58,639 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2018-11-07 15:48:58,639 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:48:58,639 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 15:48:58,639 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:48:58,640 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 15:48:58,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 15:48:58,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 15:48:58,643 INFO L87 Difference]: Start difference. First operand 10108 states and 14258 transitions. Second operand 4 states. [2018-11-07 15:49:06,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:49:06,283 INFO L93 Difference]: Finished difference Result 28819 states and 41884 transitions. [2018-11-07 15:49:06,283 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 15:49:06,283 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 236 [2018-11-07 15:49:06,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:49:06,358 INFO L225 Difference]: With dead ends: 28819 [2018-11-07 15:49:06,358 INFO L226 Difference]: Without dead ends: 18717 [2018-11-07 15:49:06,404 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 15:49:06,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18717 states. [2018-11-07 15:49:06,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18717 to 18717. [2018-11-07 15:49:06,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18717 states. [2018-11-07 15:49:06,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18717 states to 18717 states and 26000 transitions. [2018-11-07 15:49:06,782 INFO L78 Accepts]: Start accepts. Automaton has 18717 states and 26000 transitions. Word has length 236 [2018-11-07 15:49:06,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:49:06,783 INFO L480 AbstractCegarLoop]: Abstraction has 18717 states and 26000 transitions. [2018-11-07 15:49:06,783 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 15:49:06,783 INFO L276 IsEmpty]: Start isEmpty. Operand 18717 states and 26000 transitions. [2018-11-07 15:49:06,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2018-11-07 15:49:06,825 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:49:06,826 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 15:49:06,826 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:49:06,827 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:49:06,827 INFO L82 PathProgramCache]: Analyzing trace with hash -205377436, now seen corresponding path program 1 times [2018-11-07 15:49:06,827 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:49:06,828 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:49:06,828 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:49:06,828 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:49:06,828 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:49:06,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:49:07,108 WARN L179 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 15:49:07,374 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 66 proven. 67 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 15:49:07,375 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 15:49:07,375 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 15:49:07,376 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 391 with the following transitions: [2018-11-07 15:49:07,379 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], [1843], [1845], [1848], [1856], [1864], [1872], [1880], [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], [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 15:49:07,442 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 15:49:07,443 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 15:49:08,598 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 15:49:08,600 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 15:49:08,642 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:49:08,643 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 15:49:09,857 INFO L227 lantSequenceWeakener]: Weakened 381 states. On average, predicates are now at 77.53% of their original sizes. [2018-11-07 15:49:09,857 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 15:49:10,351 INFO L415 sIntCurrentIteration]: We unified 389 AI predicates to 389 [2018-11-07 15:49:10,351 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 15:49:10,352 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 15:49:10,354 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [5] total 11 [2018-11-07 15:49:10,354 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:49:10,355 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-07 15:49:10,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-07 15:49:10,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-11-07 15:49:10,356 INFO L87 Difference]: Start difference. First operand 18717 states and 26000 transitions. Second operand 8 states. [2018-11-07 15:49:19,230 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