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-LIM.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label49_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 20:46:00,733 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 20:46:00,735 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 20:46:00,752 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 20:46:00,753 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 20:46:00,754 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 20:46:00,755 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 20:46:00,757 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 20:46:00,759 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 20:46:00,760 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 20:46:00,761 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 20:46:00,761 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 20:46:00,762 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 20:46:00,763 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 20:46:00,764 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 20:46:00,765 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 20:46:00,766 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 20:46:00,768 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 20:46:00,770 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 20:46:00,772 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 20:46:00,773 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 20:46:00,774 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 20:46:00,777 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 20:46:00,777 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 20:46:00,777 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 20:46:00,778 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 20:46:00,779 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 20:46:00,780 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 20:46:00,781 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 20:46:00,782 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 20:46:00,782 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 20:46:00,783 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 20:46:00,783 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 20:46:00,783 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 20:46:00,784 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 20:46:00,785 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 20:46:00,785 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-LIM.epf [2018-11-07 20:46:00,803 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 20:46:00,803 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 20:46:00,804 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 20:46:00,804 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 20:46:00,804 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 20:46:00,805 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 20:46:00,805 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-07 20:46:00,805 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 20:46:00,805 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 20:46:00,805 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 20:46:00,805 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 20:46:00,806 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 20:46:00,807 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 20:46:00,808 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 20:46:00,808 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 20:46:00,808 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 20:46:00,808 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 20:46:00,808 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 20:46:00,810 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 20:46:00,811 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 20:46:00,811 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 20:46:00,811 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 20:46:00,811 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 20:46:00,811 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 20:46:00,812 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 20:46:00,812 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 20:46:00,812 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 20:46:00,812 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 20:46:00,813 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 20:46:00,813 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 20:46:00,813 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 20:46:00,813 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 20:46:00,813 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 20:46:00,814 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 20:46:00,814 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 20:46:00,867 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 20:46:00,879 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 20:46:00,883 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 20:46:00,885 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 20:46:00,885 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 20:46:00,886 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label49_true-unreach-call.c [2018-11-07 20:46:00,946 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0fd7bf731/7e506c90615f48e5a02252599337dd96/FLAG1c88636a3 [2018-11-07 20:46:01,714 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 20:46:01,715 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label49_true-unreach-call.c [2018-11-07 20:46:01,736 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0fd7bf731/7e506c90615f48e5a02252599337dd96/FLAG1c88636a3 [2018-11-07 20:46:01,752 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0fd7bf731/7e506c90615f48e5a02252599337dd96 [2018-11-07 20:46:01,766 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 20:46:01,768 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 20:46:01,770 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 20:46:01,770 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 20:46:01,775 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 20:46:01,776 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:46:01" (1/1) ... [2018-11-07 20:46:01,780 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a2ccaad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:46:01, skipping insertion in model container [2018-11-07 20:46:01,781 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:46:01" (1/1) ... [2018-11-07 20:46:01,793 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 20:46:01,908 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 20:46:02,677 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 20:46:02,682 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 20:46:02,987 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 20:46:03,008 INFO L193 MainTranslator]: Completed translation [2018-11-07 20:46:03,009 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:46:03 WrapperNode [2018-11-07 20:46:03,009 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 20:46:03,010 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 20:46:03,010 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 20:46:03,010 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 20:46:03,020 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:46:03" (1/1) ... [2018-11-07 20:46:03,203 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:46:03" (1/1) ... [2018-11-07 20:46:03,214 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 20:46:03,215 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 20:46:03,218 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 20:46:03,218 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 20:46:03,230 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:46:03" (1/1) ... [2018-11-07 20:46:03,231 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:46:03" (1/1) ... [2018-11-07 20:46:03,246 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:46:03" (1/1) ... [2018-11-07 20:46:03,247 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:46:03" (1/1) ... [2018-11-07 20:46:03,312 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:46:03" (1/1) ... [2018-11-07 20:46:03,345 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:46:03" (1/1) ... [2018-11-07 20:46:03,371 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:46:03" (1/1) ... [2018-11-07 20:46:03,390 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 20:46:03,391 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 20:46:03,391 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 20:46:03,391 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 20:46:03,392 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:46:03" (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 20:46:03,464 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 20:46:03,464 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 20:46:03,465 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 20:46:03,465 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 20:46:03,465 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 20:46:03,465 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 20:46:03,465 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 20:46:03,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 20:46:03,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 20:46:03,466 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 20:46:03,466 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 20:46:09,988 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 20:46:09,988 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:46:09 BoogieIcfgContainer [2018-11-07 20:46:09,989 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 20:46:09,990 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 20:46:09,991 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 20:46:09,995 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 20:46:09,996 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 08:46:01" (1/3) ... [2018-11-07 20:46:09,997 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78745162 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:46:09, skipping insertion in model container [2018-11-07 20:46:09,997 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:46:03" (2/3) ... [2018-11-07 20:46:09,997 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78745162 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:46:09, skipping insertion in model container [2018-11-07 20:46:09,998 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:46:09" (3/3) ... [2018-11-07 20:46:10,004 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label49_true-unreach-call.c [2018-11-07 20:46:10,015 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 20:46:10,027 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 20:46:10,049 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 20:46:10,108 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 20:46:10,108 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 20:46:10,108 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 20:46:10,108 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 20:46:10,108 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 20:46:10,109 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 20:46:10,109 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 20:46:10,109 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 20:46:10,164 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-11-07 20:46:10,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-11-07 20:46:10,181 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:46:10,182 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:46:10,186 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:46:10,192 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:46:10,193 INFO L82 PathProgramCache]: Analyzing trace with hash -224629815, now seen corresponding path program 1 times [2018-11-07 20:46:10,195 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:46:10,242 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:46:10,242 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:46:10,243 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:46:10,243 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:46:10,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:46:10,711 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 5 [2018-11-07 20:46:10,734 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 20:46:10,737 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:46:10,737 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 20:46:10,737 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:46:10,743 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 20:46:10,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 20:46:10,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 20:46:10,764 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 4 states. [2018-11-07 20:46:17,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:46:17,750 INFO L93 Difference]: Finished difference Result 1550 states and 2835 transitions. [2018-11-07 20:46:17,752 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 20:46:17,754 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2018-11-07 20:46:17,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:46:17,790 INFO L225 Difference]: With dead ends: 1550 [2018-11-07 20:46:17,790 INFO L226 Difference]: Without dead ends: 1106 [2018-11-07 20:46:17,801 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 20:46:17,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1106 states. [2018-11-07 20:46:17,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1106 to 762. [2018-11-07 20:46:17,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 762 states. [2018-11-07 20:46:17,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 762 states to 762 states and 1263 transitions. [2018-11-07 20:46:17,923 INFO L78 Accepts]: Start accepts. Automaton has 762 states and 1263 transitions. Word has length 59 [2018-11-07 20:46:17,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:46:17,924 INFO L480 AbstractCegarLoop]: Abstraction has 762 states and 1263 transitions. [2018-11-07 20:46:17,924 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 20:46:17,925 INFO L276 IsEmpty]: Start isEmpty. Operand 762 states and 1263 transitions. [2018-11-07 20:46:17,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-11-07 20:46:17,933 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:46:17,934 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 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 20:46:17,934 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:46:17,934 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:46:17,935 INFO L82 PathProgramCache]: Analyzing trace with hash 311881044, now seen corresponding path program 1 times [2018-11-07 20:46:17,935 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:46:17,936 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:46:17,936 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:46:17,936 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:46:17,937 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:46:18,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:46:18,218 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:46:18,218 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:46:18,218 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 20:46:18,218 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:46:18,220 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 20:46:18,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 20:46:18,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 20:46:18,223 INFO L87 Difference]: Start difference. First operand 762 states and 1263 transitions. Second operand 5 states. [2018-11-07 20:46:23,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:46:23,301 INFO L93 Difference]: Finished difference Result 2248 states and 3762 transitions. [2018-11-07 20:46:23,304 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 20:46:23,304 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 132 [2018-11-07 20:46:23,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:46:23,319 INFO L225 Difference]: With dead ends: 2248 [2018-11-07 20:46:23,319 INFO L226 Difference]: Without dead ends: 1492 [2018-11-07 20:46:23,324 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 20:46:23,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1492 states. [2018-11-07 20:46:23,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1492 to 1457. [2018-11-07 20:46:23,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1457 states. [2018-11-07 20:46:23,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1457 states to 1457 states and 2152 transitions. [2018-11-07 20:46:23,409 INFO L78 Accepts]: Start accepts. Automaton has 1457 states and 2152 transitions. Word has length 132 [2018-11-07 20:46:23,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:46:23,409 INFO L480 AbstractCegarLoop]: Abstraction has 1457 states and 2152 transitions. [2018-11-07 20:46:23,409 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 20:46:23,410 INFO L276 IsEmpty]: Start isEmpty. Operand 1457 states and 2152 transitions. [2018-11-07 20:46:23,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-11-07 20:46:23,418 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:46:23,418 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:46:23,418 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:46:23,418 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:46:23,422 INFO L82 PathProgramCache]: Analyzing trace with hash 827365732, now seen corresponding path program 1 times [2018-11-07 20:46:23,422 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:46:23,423 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:46:23,423 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:46:23,423 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:46:23,424 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:46:23,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:46:23,681 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:46:23,682 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:46:23,682 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 20:46:23,682 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:46:23,683 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 20:46:23,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 20:46:23,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 20:46:23,683 INFO L87 Difference]: Start difference. First operand 1457 states and 2152 transitions. Second operand 4 states. [2018-11-07 20:46:29,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:46:29,500 INFO L93 Difference]: Finished difference Result 5402 states and 8304 transitions. [2018-11-07 20:46:29,501 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 20:46:29,501 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 140 [2018-11-07 20:46:29,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:46:29,532 INFO L225 Difference]: With dead ends: 5402 [2018-11-07 20:46:29,532 INFO L226 Difference]: Without dead ends: 3951 [2018-11-07 20:46:29,546 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 20:46:29,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3951 states. [2018-11-07 20:46:29,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3951 to 3948. [2018-11-07 20:46:29,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3948 states. [2018-11-07 20:46:29,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3948 states to 3948 states and 5455 transitions. [2018-11-07 20:46:29,673 INFO L78 Accepts]: Start accepts. Automaton has 3948 states and 5455 transitions. Word has length 140 [2018-11-07 20:46:29,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:46:29,673 INFO L480 AbstractCegarLoop]: Abstraction has 3948 states and 5455 transitions. [2018-11-07 20:46:29,674 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 20:46:29,674 INFO L276 IsEmpty]: Start isEmpty. Operand 3948 states and 5455 transitions. [2018-11-07 20:46:29,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-11-07 20:46:29,680 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:46:29,681 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:46:29,681 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:46:29,681 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:46:29,681 INFO L82 PathProgramCache]: Analyzing trace with hash 1388399790, now seen corresponding path program 1 times [2018-11-07 20:46:29,681 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:46:29,682 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:46:29,682 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:46:29,683 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:46:29,683 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:46:29,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:46:30,008 WARN L179 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 20:46:30,414 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:46:30,415 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:46:30,415 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 20:46:30,415 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:46:30,417 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 20:46:30,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 20:46:30,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 20:46:30,417 INFO L87 Difference]: Start difference. First operand 3948 states and 5455 transitions. Second operand 6 states. [2018-11-07 20:46:34,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:46:34,447 INFO L93 Difference]: Finished difference Result 9145 states and 12423 transitions. [2018-11-07 20:46:34,447 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 20:46:34,447 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 146 [2018-11-07 20:46:34,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:46:34,474 INFO L225 Difference]: With dead ends: 9145 [2018-11-07 20:46:34,474 INFO L226 Difference]: Without dead ends: 5203 [2018-11-07 20:46:34,498 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 20:46:34,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5203 states. [2018-11-07 20:46:34,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5203 to 5145. [2018-11-07 20:46:34,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5145 states. [2018-11-07 20:46:34,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5145 states to 5145 states and 6605 transitions. [2018-11-07 20:46:34,646 INFO L78 Accepts]: Start accepts. Automaton has 5145 states and 6605 transitions. Word has length 146 [2018-11-07 20:46:34,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:46:34,647 INFO L480 AbstractCegarLoop]: Abstraction has 5145 states and 6605 transitions. [2018-11-07 20:46:34,647 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 20:46:34,647 INFO L276 IsEmpty]: Start isEmpty. Operand 5145 states and 6605 transitions. [2018-11-07 20:46:34,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2018-11-07 20:46:34,651 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:46:34,651 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:46:34,652 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:46:34,652 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:46:34,652 INFO L82 PathProgramCache]: Analyzing trace with hash 389844774, now seen corresponding path program 1 times [2018-11-07 20:46:34,652 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:46:34,653 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:46:34,653 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:46:34,653 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:46:34,653 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:46:34,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:46:35,195 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:46:35,195 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:46:35,195 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:46:35,196 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 172 with the following transitions: [2018-11-07 20:46:35,199 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [445], [447], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [762], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 20:46:35,266 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:46:35,267 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:46:35,868 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:46:35,869 INFO L272 AbstractInterpreter]: Visited 116 different actions 116 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 20:46:35,925 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:46:35,925 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:46:36,522 INFO L227 lantSequenceWeakener]: Weakened 165 states. On average, predicates are now at 78.35% of their original sizes. [2018-11-07 20:46:36,523 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:46:36,917 INFO L415 sIntCurrentIteration]: We unified 170 AI predicates to 170 [2018-11-07 20:46:36,917 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:46:36,918 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:46:36,918 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2018-11-07 20:46:36,918 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:46:36,919 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-07 20:46:36,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-07 20:46:36,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-11-07 20:46:36,920 INFO L87 Difference]: Start difference. First operand 5145 states and 6605 transitions. Second operand 8 states. [2018-11-07 20:46:40,203 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:47:10,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:47:10,770 INFO L93 Difference]: Finished difference Result 10594 states and 13568 transitions. [2018-11-07 20:47:10,770 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 20:47:10,770 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 171 [2018-11-07 20:47:10,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:47:10,791 INFO L225 Difference]: With dead ends: 10594 [2018-11-07 20:47:10,792 INFO L226 Difference]: Without dead ends: 5455 [2018-11-07 20:47:10,805 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 172 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-11-07 20:47:10,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5455 states. [2018-11-07 20:47:10,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5455 to 5453. [2018-11-07 20:47:10,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5453 states. [2018-11-07 20:47:10,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5453 states to 5453 states and 6922 transitions. [2018-11-07 20:47:10,936 INFO L78 Accepts]: Start accepts. Automaton has 5453 states and 6922 transitions. Word has length 171 [2018-11-07 20:47:10,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:47:10,937 INFO L480 AbstractCegarLoop]: Abstraction has 5453 states and 6922 transitions. [2018-11-07 20:47:10,937 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-07 20:47:10,937 INFO L276 IsEmpty]: Start isEmpty. Operand 5453 states and 6922 transitions. [2018-11-07 20:47:10,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2018-11-07 20:47:10,943 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:47:10,944 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 20:47:10,944 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:47:10,944 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:47:10,945 INFO L82 PathProgramCache]: Analyzing trace with hash -34095748, now seen corresponding path program 1 times [2018-11-07 20:47:10,945 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:47:10,946 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:47:10,946 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:47:10,946 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:47:10,946 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:47:10,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:47:12,017 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 198 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:47:12,018 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:47:12,018 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:47:12,018 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 268 with the following transitions: [2018-11-07 20:47:12,018 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [445], [447], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [762], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 20:47:12,024 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:47:12,024 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:47:12,122 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:47:13,559 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:47:13,560 INFO L272 AbstractInterpreter]: Visited 120 different actions 804 times. Merged at 5 different actions 30 times. Widened at 1 different actions 2 times. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 20:47:13,598 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:47:13,598 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:47:14,335 INFO L227 lantSequenceWeakener]: Weakened 71 states. On average, predicates are now at 77.72% of their original sizes. [2018-11-07 20:47:14,335 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:47:17,312 INFO L415 sIntCurrentIteration]: We unified 266 AI predicates to 266 [2018-11-07 20:47:17,312 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:47:17,313 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:47:17,313 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [20] imperfect sequences [11] total 29 [2018-11-07 20:47:17,313 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:47:17,314 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-11-07 20:47:17,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-11-07 20:47:17,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2018-11-07 20:47:17,316 INFO L87 Difference]: Start difference. First operand 5453 states and 6922 transitions. Second operand 20 states. [2018-11-07 20:48:20,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:48:20,847 INFO L93 Difference]: Finished difference Result 12799 states and 16027 transitions. [2018-11-07 20:48:20,847 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-11-07 20:48:20,847 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 267 [2018-11-07 20:48:20,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:48:20,874 INFO L225 Difference]: With dead ends: 12799 [2018-11-07 20:48:20,874 INFO L226 Difference]: Without dead ends: 7660 [2018-11-07 20:48:20,887 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 287 GetRequests, 179 SyntacticMatches, 69 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1062 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=350, Invalid=1290, Unknown=0, NotChecked=0, Total=1640 [2018-11-07 20:48:20,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7660 states. [2018-11-07 20:48:21,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7660 to 6397. [2018-11-07 20:48:21,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6397 states. [2018-11-07 20:48:21,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6397 states to 6397 states and 7910 transitions. [2018-11-07 20:48:21,031 INFO L78 Accepts]: Start accepts. Automaton has 6397 states and 7910 transitions. Word has length 267 [2018-11-07 20:48:21,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:48:21,032 INFO L480 AbstractCegarLoop]: Abstraction has 6397 states and 7910 transitions. [2018-11-07 20:48:21,032 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-11-07 20:48:21,032 INFO L276 IsEmpty]: Start isEmpty. Operand 6397 states and 7910 transitions. [2018-11-07 20:48:21,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2018-11-07 20:48:21,042 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:48:21,042 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 20:48:21,043 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:48:21,043 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:48:21,043 INFO L82 PathProgramCache]: Analyzing trace with hash -983934839, now seen corresponding path program 1 times [2018-11-07 20:48:21,043 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:48:21,044 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:48:21,044 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:48:21,045 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:48:21,045 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:48:21,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:48:21,826 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 55 proven. 155 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-07 20:48:21,827 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:48:21,827 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:48:21,827 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 410 with the following transitions: [2018-11-07 20:48:21,828 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [445], [447], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [762], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1378], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 20:48:21,835 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:48:21,836 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:48:21,992 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:48:22,655 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:48:22,656 INFO L272 AbstractInterpreter]: Visited 246 different actions 725 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 20:48:22,681 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:48:22,682 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:48:23,705 INFO L227 lantSequenceWeakener]: Weakened 73 states. On average, predicates are now at 77.77% of their original sizes. [2018-11-07 20:48:23,705 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:48:27,742 INFO L415 sIntCurrentIteration]: We unified 408 AI predicates to 408 [2018-11-07 20:48:27,742 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:48:27,743 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:48:27,743 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [15] imperfect sequences [8] total 21 [2018-11-07 20:48:27,743 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:48:27,744 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-07 20:48:27,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-07 20:48:27,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2018-11-07 20:48:27,745 INFO L87 Difference]: Start difference. First operand 6397 states and 7910 transitions. Second operand 15 states. [2018-11-07 20:48:56,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:48:56,120 INFO L93 Difference]: Finished difference Result 12716 states and 15881 transitions. [2018-11-07 20:48:56,120 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-11-07 20:48:56,120 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 409 [2018-11-07 20:48:56,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:48:56,143 INFO L225 Difference]: With dead ends: 12716 [2018-11-07 20:48:56,143 INFO L226 Difference]: Without dead ends: 7577 [2018-11-07 20:48:56,155 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 415 GetRequests, 255 SyntacticMatches, 140 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 847 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=113, Invalid=349, Unknown=0, NotChecked=0, Total=462 [2018-11-07 20:48:56,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7577 states. [2018-11-07 20:48:56,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7577 to 7045. [2018-11-07 20:48:56,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7045 states. [2018-11-07 20:48:56,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7045 states to 7045 states and 8591 transitions. [2018-11-07 20:48:56,290 INFO L78 Accepts]: Start accepts. Automaton has 7045 states and 8591 transitions. Word has length 409 [2018-11-07 20:48:56,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:48:56,291 INFO L480 AbstractCegarLoop]: Abstraction has 7045 states and 8591 transitions. [2018-11-07 20:48:56,291 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-11-07 20:48:56,291 INFO L276 IsEmpty]: Start isEmpty. Operand 7045 states and 8591 transitions. [2018-11-07 20:48:56,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 447 [2018-11-07 20:48:56,303 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:48:56,304 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 20:48:56,304 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:48:56,304 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:48:56,305 INFO L82 PathProgramCache]: Analyzing trace with hash 1825072665, now seen corresponding path program 1 times [2018-11-07 20:48:56,305 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:48:56,306 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:48:56,306 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:48:56,306 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:48:56,306 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:48:56,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:48:57,547 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 55 proven. 155 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-07 20:48:57,548 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:48:57,548 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:48:57,548 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 447 with the following transitions: [2018-11-07 20:48:57,549 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [445], [447], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [762], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1561], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 20:48:57,556 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:48:57,557 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:48:57,681 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:48:59,278 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 20:48:59,278 INFO L272 AbstractInterpreter]: Visited 284 different actions 1121 times. Merged at 7 different actions 20 times. Never widened. Found 4 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 20:48:59,285 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:48:59,286 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 20:48:59,286 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:48:59,287 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 20:48:59,296 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:48:59,297 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 20:48:59,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:48:59,465 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 20:49:14,661 WARN L179 SmtUtils]: Spent 14.78 s on a formula simplification. DAG size of input: 116 DAG size of output: 50 [2018-11-07 20:49:15,169 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 161 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:49:15,170 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 20:49:15,444 WARN L179 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 34 [2018-11-07 20:49:15,940 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 161 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:49:15,972 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 20:49:15,973 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 15 [2018-11-07 20:49:15,973 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 20:49:15,974 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-07 20:49:15,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-07 20:49:15,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2018-11-07 20:49:15,976 INFO L87 Difference]: Start difference. First operand 7045 states and 8591 transitions. Second operand 12 states. [2018-11-07 20:49:19,608 WARN L179 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 25 [2018-11-07 20:49:27,980 WARN L179 SmtUtils]: Spent 5.91 s on a formula simplification that was a NOOP. DAG size: 59 [2018-11-07 20:49:34,241 WARN L179 SmtUtils]: Spent 5.94 s on a formula simplification that was a NOOP. DAG size: 59 Received shutdown request... [2018-11-07 20:49:37,369 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-11-07 20:49:37,370 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 20:49:37,377 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 20:49:37,378 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 08:49:37 BoogieIcfgContainer [2018-11-07 20:49:37,378 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 20:49:37,379 INFO L168 Benchmark]: Toolchain (without parser) took 215611.84 ms. Allocated memory was 1.5 GB in the beginning and 5.5 GB in the end (delta: 4.0 GB). Free memory was 1.4 GB in the beginning and 1.9 GB in the end (delta: -524.1 MB). Peak memory consumption was 3.5 GB. Max. memory is 7.1 GB. [2018-11-07 20:49:37,380 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 20:49:37,381 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1239.37 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 95.3 MB). Peak memory consumption was 95.3 MB. Max. memory is 7.1 GB. [2018-11-07 20:49:37,381 INFO L168 Benchmark]: Boogie Procedure Inliner took 204.45 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 752.9 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -896.3 MB). Peak memory consumption was 31.4 MB. Max. memory is 7.1 GB. [2018-11-07 20:49:37,384 INFO L168 Benchmark]: Boogie Preprocessor took 175.90 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. [2018-11-07 20:49:37,385 INFO L168 Benchmark]: RCFGBuilder took 6598.17 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 300.2 MB). Peak memory consumption was 300.2 MB. Max. memory is 7.1 GB. [2018-11-07 20:49:37,386 INFO L168 Benchmark]: TraceAbstraction took 207387.84 ms. Allocated memory was 2.3 GB in the beginning and 5.5 GB in the end (delta: 3.2 GB). Free memory was 1.9 GB in the beginning and 1.9 GB in the end (delta: -37.0 MB). Peak memory consumption was 3.2 GB. Max. memory is 7.1 GB. [2018-11-07 20:49:37,393 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1239.37 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 95.3 MB). Peak memory consumption was 95.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 204.45 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 752.9 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -896.3 MB). Peak memory consumption was 31.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 175.90 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 6598.17 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 300.2 MB). Peak memory consumption was 300.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 207387.84 ms. Allocated memory was 2.3 GB in the beginning and 5.5 GB in the end (delta: 3.2 GB). Free memory was 1.9 GB in the beginning and 1.9 GB in the end (delta: -37.0 MB). Peak memory consumption was 3.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 163]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 163). Cancelled while BasicCegarLoop was constructing difference of abstraction (7045states) and FLOYD_HOARE automaton (currently 25 states, 12 states before enhancement),while ReachableStatesComputation was computing reachable states (3741 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 438 locations, 1 error locations. TIMEOUT Result, 207.2s OverallTime, 8 OverallIterations, 3 TraceHistogramMax, 169.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2458 SDtfs, 19369 SDslu, 2251 SDs, 0 SdLazy, 23509 SolverSat, 2674 SolverUnsat, 10 SolverUnknown, 0 SolverNotchecked, 75.6s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 1837 GetRequests, 1508 SyntacticMatches, 212 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2141 ImplicationChecksByTransitivity, 37.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7045occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 4.9s AbstIntTime, 4 AbstIntIterations, 3 AbstIntStrong, 0.9978149923776344 AbsIntWeakeningRatio, 0.08530805687203792 AbsIntAvgWeakeningVarsNumRemoved, 11.804502369668246 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.8s AutomataMinimizationTime, 7 MinimizatonAttempts, 2237 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 20.7s InterpolantComputationTime, 2216 NumberOfCodeBlocks, 2216 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 2652 ConstructedInterpolants, 55 QuantifiedInterpolants, 4273356 SizeOfPredicates, 3 NumberOfNonLiveVariables, 627 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 10 InterpolantComputations, 4 PerfectInterpolantSequences, 798/1272 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown