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/Problem18_label43_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-63daa26 [2018-11-12 19:43:57,733 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-12 19:43:57,738 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-12 19:43:57,751 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-12 19:43:57,751 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-12 19:43:57,752 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-12 19:43:57,754 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-12 19:43:57,755 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-12 19:43:57,757 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-12 19:43:57,758 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-12 19:43:57,759 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-12 19:43:57,759 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-12 19:43:57,760 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-12 19:43:57,761 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-12 19:43:57,762 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-12 19:43:57,763 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-12 19:43:57,764 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-12 19:43:57,766 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-12 19:43:57,768 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-12 19:43:57,769 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-12 19:43:57,770 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-12 19:43:57,771 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-12 19:43:57,774 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-12 19:43:57,774 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-12 19:43:57,774 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-12 19:43:57,775 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-12 19:43:57,776 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-12 19:43:57,777 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-12 19:43:57,778 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-12 19:43:57,779 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-12 19:43:57,779 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-12 19:43:57,780 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-12 19:43:57,780 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-12 19:43:57,780 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-12 19:43:57,781 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-12 19:43:57,782 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-12 19:43:57,782 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 [2018-11-12 19:43:57,804 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-12 19:43:57,804 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-12 19:43:57,805 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-12 19:43:57,805 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-12 19:43:57,805 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-12 19:43:57,805 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-12 19:43:57,805 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-12 19:43:57,809 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-12 19:43:57,809 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-12 19:43:57,809 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-12 19:43:57,809 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-12 19:43:57,809 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-12 19:43:57,810 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-12 19:43:57,810 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-12 19:43:57,811 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-12 19:43:57,811 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-12 19:43:57,811 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-12 19:43:57,811 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-12 19:43:57,811 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-12 19:43:57,812 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-12 19:43:57,812 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-12 19:43:57,812 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-12 19:43:57,812 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-12 19:43:57,812 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-12 19:43:57,812 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-12 19:43:57,813 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 19:43:57,813 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-12 19:43:57,813 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-12 19:43:57,813 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-12 19:43:57,813 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-12 19:43:57,815 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-12 19:43:57,815 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-12 19:43:57,815 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-12 19:43:57,816 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-12 19:43:57,816 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-12 19:43:57,873 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-12 19:43:57,886 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-12 19:43:57,891 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-12 19:43:57,893 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-12 19:43:57,893 INFO L276 PluginConnector]: CDTParser initialized [2018-11-12 19:43:57,895 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label43_true-unreach-call.c [2018-11-12 19:43:57,958 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e0490d651/4cd25f3531984712ad10533109e69520/FLAGf984f78aa [2018-11-12 19:43:58,737 INFO L298 CDTParser]: Found 1 translation units. [2018-11-12 19:43:58,738 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label43_true-unreach-call.c [2018-11-12 19:43:58,766 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e0490d651/4cd25f3531984712ad10533109e69520/FLAGf984f78aa [2018-11-12 19:43:58,786 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e0490d651/4cd25f3531984712ad10533109e69520 [2018-11-12 19:43:58,799 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-12 19:43:58,801 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-12 19:43:58,802 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-12 19:43:58,803 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-12 19:43:58,807 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-12 19:43:58,808 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 07:43:58" (1/1) ... [2018-11-12 19:43:58,811 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60dbd0d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:43:58, skipping insertion in model container [2018-11-12 19:43:58,812 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 07:43:58" (1/1) ... [2018-11-12 19:43:58,823 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-12 19:43:58,976 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-12 19:44:00,079 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 19:44:00,084 INFO L189 MainTranslator]: Completed pre-run [2018-11-12 19:44:00,521 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 19:44:00,550 INFO L193 MainTranslator]: Completed translation [2018-11-12 19:44:00,551 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:44:00 WrapperNode [2018-11-12 19:44:00,551 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-12 19:44:00,552 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-12 19:44:00,552 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-12 19:44:00,552 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-12 19:44:00,562 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:44:00" (1/1) ... [2018-11-12 19:44:00,819 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:44:00" (1/1) ... [2018-11-12 19:44:00,828 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-12 19:44:00,828 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-12 19:44:00,828 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-12 19:44:00,829 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-12 19:44:00,839 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:44:00" (1/1) ... [2018-11-12 19:44:00,839 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:44:00" (1/1) ... [2018-11-12 19:44:00,855 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:44:00" (1/1) ... [2018-11-12 19:44:00,856 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:44:00" (1/1) ... [2018-11-12 19:44:00,936 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:44:00" (1/1) ... [2018-11-12 19:44:00,975 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:44:00" (1/1) ... [2018-11-12 19:44:00,995 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:44:00" (1/1) ... [2018-11-12 19:44:01,014 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-12 19:44:01,015 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-12 19:44:01,015 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-12 19:44:01,015 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-12 19:44:01,016 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:44:00" (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 [2018-11-12 19:44:01,083 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-12 19:44:01,084 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-12 19:44:01,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-12 19:44:01,084 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-12 19:44:01,084 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-12 19:44:01,084 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-12 19:44:01,085 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-12 19:44:01,085 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-12 19:44:01,085 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-12 19:44:01,085 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-12 19:44:01,085 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-12 19:44:01,086 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-12 19:44:01,087 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-12 19:44:09,658 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-12 19:44:09,658 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 07:44:09 BoogieIcfgContainer [2018-11-12 19:44:09,659 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-12 19:44:09,660 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-12 19:44:09,660 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-12 19:44:09,663 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-12 19:44:09,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 07:43:58" (1/3) ... [2018-11-12 19:44:09,665 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d15ef7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 07:44:09, skipping insertion in model container [2018-11-12 19:44:09,665 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:44:00" (2/3) ... [2018-11-12 19:44:09,665 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d15ef7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 07:44:09, skipping insertion in model container [2018-11-12 19:44:09,665 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 07:44:09" (3/3) ... [2018-11-12 19:44:09,667 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label43_true-unreach-call.c [2018-11-12 19:44:09,678 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-12 19:44:09,688 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-12 19:44:09,707 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-12 19:44:09,753 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-12 19:44:09,753 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-12 19:44:09,753 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-12 19:44:09,753 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-12 19:44:09,753 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-12 19:44:09,754 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-12 19:44:09,754 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-12 19:44:09,754 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-12 19:44:09,803 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-11-12 19:44:09,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2018-11-12 19:44:09,817 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:44:09,818 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:44:09,820 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:44:09,826 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:44:09,826 INFO L82 PathProgramCache]: Analyzing trace with hash 2013780399, now seen corresponding path program 1 times [2018-11-12 19:44:09,828 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:44:09,876 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:44:09,877 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:44:09,877 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:44:09,877 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:44:09,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:44:10,381 WARN L179 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 19:44:10,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:44:10,486 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 19:44:10,486 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-12 19:44:10,486 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:44:10,492 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-12 19:44:10,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-12 19:44:10,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 19:44:10,512 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 3 states. [2018-11-12 19:44:16,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:44:16,594 INFO L93 Difference]: Finished difference Result 2251 states and 4322 transitions. [2018-11-12 19:44:16,597 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-12 19:44:16,598 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 73 [2018-11-12 19:44:16,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:44:16,631 INFO L225 Difference]: With dead ends: 2251 [2018-11-12 19:44:16,631 INFO L226 Difference]: Without dead ends: 1474 [2018-11-12 19:44:16,644 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 19:44:16,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2018-11-12 19:44:16,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1474. [2018-11-12 19:44:16,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2018-11-12 19:44:16,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2721 transitions. [2018-11-12 19:44:16,824 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2721 transitions. Word has length 73 [2018-11-12 19:44:16,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:44:16,825 INFO L480 AbstractCegarLoop]: Abstraction has 1474 states and 2721 transitions. [2018-11-12 19:44:16,825 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-12 19:44:16,825 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2721 transitions. [2018-11-12 19:44:16,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2018-11-12 19:44:16,846 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:44:16,846 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, 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] [2018-11-12 19:44:16,846 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:44:16,851 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:44:16,852 INFO L82 PathProgramCache]: Analyzing trace with hash -928614391, now seen corresponding path program 1 times [2018-11-12 19:44:16,852 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:44:16,853 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:44:16,853 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:44:16,853 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:44:16,853 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:44:16,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:44:17,202 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:44:17,202 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 19:44:17,202 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 19:44:17,203 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:44:17,205 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 19:44:17,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 19:44:17,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 19:44:17,206 INFO L87 Difference]: Start difference. First operand 1474 states and 2721 transitions. Second operand 6 states. [2018-11-12 19:44:25,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:44:25,414 INFO L93 Difference]: Finished difference Result 4419 states and 8244 transitions. [2018-11-12 19:44:25,416 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 19:44:25,416 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 162 [2018-11-12 19:44:25,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:44:25,438 INFO L225 Difference]: With dead ends: 4419 [2018-11-12 19:44:25,438 INFO L226 Difference]: Without dead ends: 2951 [2018-11-12 19:44:25,444 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 [2018-11-12 19:44:25,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2951 states. [2018-11-12 19:44:25,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2951 to 2928. [2018-11-12 19:44:25,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2928 states. [2018-11-12 19:44:25,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2928 states to 2928 states and 5087 transitions. [2018-11-12 19:44:25,541 INFO L78 Accepts]: Start accepts. Automaton has 2928 states and 5087 transitions. Word has length 162 [2018-11-12 19:44:25,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:44:25,542 INFO L480 AbstractCegarLoop]: Abstraction has 2928 states and 5087 transitions. [2018-11-12 19:44:25,542 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 19:44:25,542 INFO L276 IsEmpty]: Start isEmpty. Operand 2928 states and 5087 transitions. [2018-11-12 19:44:25,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2018-11-12 19:44:25,548 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:44:25,549 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:44:25,549 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:44:25,549 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:44:25,550 INFO L82 PathProgramCache]: Analyzing trace with hash 2132673540, now seen corresponding path program 1 times [2018-11-12 19:44:25,550 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:44:25,551 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:44:25,551 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:44:25,552 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:44:25,552 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:44:25,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:44:26,088 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:44:26,088 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 19:44:26,089 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 19:44:26,089 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:44:26,089 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 19:44:26,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 19:44:26,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 19:44:26,090 INFO L87 Difference]: Start difference. First operand 2928 states and 5087 transitions. Second operand 6 states. [2018-11-12 19:44:32,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:44:32,054 INFO L93 Difference]: Finished difference Result 6669 states and 11522 transitions. [2018-11-12 19:44:32,055 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 19:44:32,056 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 209 [2018-11-12 19:44:32,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:44:32,077 INFO L225 Difference]: With dead ends: 6669 [2018-11-12 19:44:32,077 INFO L226 Difference]: Without dead ends: 3747 [2018-11-12 19:44:32,086 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 [2018-11-12 19:44:32,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3747 states. [2018-11-12 19:44:32,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3747 to 3689. [2018-11-12 19:44:32,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3689 states. [2018-11-12 19:44:32,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3689 states to 3689 states and 5891 transitions. [2018-11-12 19:44:32,189 INFO L78 Accepts]: Start accepts. Automaton has 3689 states and 5891 transitions. Word has length 209 [2018-11-12 19:44:32,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:44:32,190 INFO L480 AbstractCegarLoop]: Abstraction has 3689 states and 5891 transitions. [2018-11-12 19:44:32,190 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 19:44:32,190 INFO L276 IsEmpty]: Start isEmpty. Operand 3689 states and 5891 transitions. [2018-11-12 19:44:32,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2018-11-12 19:44:32,195 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:44:32,195 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, 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] [2018-11-12 19:44:32,195 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:44:32,196 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:44:32,196 INFO L82 PathProgramCache]: Analyzing trace with hash 2039872936, now seen corresponding path program 1 times [2018-11-12 19:44:32,196 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:44:32,197 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:44:32,197 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:44:32,197 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:44:32,198 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:44:32,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:44:32,488 WARN L179 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 19:44:32,553 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:44:32,553 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 19:44:32,553 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 19:44:32,553 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:44:32,554 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 19:44:32,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 19:44:32,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 19:44:32,555 INFO L87 Difference]: Start difference. First operand 3689 states and 5891 transitions. Second operand 6 states. [2018-11-12 19:44:37,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:44:37,657 INFO L93 Difference]: Finished difference Result 9623 states and 15373 transitions. [2018-11-12 19:44:37,657 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 19:44:37,657 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 211 [2018-11-12 19:44:37,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:44:37,689 INFO L225 Difference]: With dead ends: 9623 [2018-11-12 19:44:37,690 INFO L226 Difference]: Without dead ends: 5940 [2018-11-12 19:44:37,702 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-12 19:44:37,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5940 states. [2018-11-12 19:44:37,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5940 to 5889. [2018-11-12 19:44:37,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5889 states. [2018-11-12 19:44:37,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5889 states to 5889 states and 8064 transitions. [2018-11-12 19:44:37,860 INFO L78 Accepts]: Start accepts. Automaton has 5889 states and 8064 transitions. Word has length 211 [2018-11-12 19:44:37,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:44:37,860 INFO L480 AbstractCegarLoop]: Abstraction has 5889 states and 8064 transitions. [2018-11-12 19:44:37,860 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 19:44:37,861 INFO L276 IsEmpty]: Start isEmpty. Operand 5889 states and 8064 transitions. [2018-11-12 19:44:37,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2018-11-12 19:44:37,870 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:44:37,870 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:44:37,870 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:44:37,871 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:44:37,871 INFO L82 PathProgramCache]: Analyzing trace with hash 1691415403, now seen corresponding path program 1 times [2018-11-12 19:44:37,871 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:44:37,872 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:44:37,872 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:44:37,872 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:44:37,872 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:44:37,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:44:38,192 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 135 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2018-11-12 19:44:38,192 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 19:44:38,192 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-12 19:44:38,192 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:44:38,194 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-12 19:44:38,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-12 19:44:38,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 19:44:38,195 INFO L87 Difference]: Start difference. First operand 5889 states and 8064 transitions. Second operand 4 states. [2018-11-12 19:44:45,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:44:45,868 INFO L93 Difference]: Finished difference Result 23211 states and 32875 transitions. [2018-11-12 19:44:45,869 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-12 19:44:45,869 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 269 [2018-11-12 19:44:45,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:44:45,943 INFO L225 Difference]: With dead ends: 23211 [2018-11-12 19:44:45,944 INFO L226 Difference]: Without dead ends: 17328 [2018-11-12 19:44:45,979 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 [2018-11-12 19:44:45,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17328 states. [2018-11-12 19:44:46,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17328 to 17328. [2018-11-12 19:44:46,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17328 states. [2018-11-12 19:44:46,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17328 states to 17328 states and 23091 transitions. [2018-11-12 19:44:46,396 INFO L78 Accepts]: Start accepts. Automaton has 17328 states and 23091 transitions. Word has length 269 [2018-11-12 19:44:46,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:44:46,397 INFO L480 AbstractCegarLoop]: Abstraction has 17328 states and 23091 transitions. [2018-11-12 19:44:46,397 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-12 19:44:46,397 INFO L276 IsEmpty]: Start isEmpty. Operand 17328 states and 23091 transitions. [2018-11-12 19:44:46,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 475 [2018-11-12 19:44:46,445 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:44:46,446 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:44:46,446 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:44:46,446 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:44:46,446 INFO L82 PathProgramCache]: Analyzing trace with hash 1084028798, now seen corresponding path program 1 times [2018-11-12 19:44:46,447 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:44:46,447 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:44:46,448 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:44:46,448 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:44:46,448 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:44:46,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:44:47,295 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 253 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:44:47,295 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:44:47,295 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:44:47,297 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 475 with the following transitions: [2018-11-12 19:44:47,299 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1839], [1847], [1855], [1863], [1871], [1879], [1887], [1895], [1903], [1911], [1919], [1927], [1935], [1943], [1951], [1959], [1967], [1975], [1983], [1991], [1999], [2007], [2015], [2023], [2031], [2039], [2047], [2055], [2063], [2071], [2079], [2087], [2095], [2103], [2107], [2109], [2112], [2117], [2121], [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], [2328], [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] [2018-11-12 19:44:47,362 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:44:47,362 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:44:48,370 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:44:48,371 INFO L272 AbstractInterpreter]: Visited 283 different actions 283 times. Never merged. Never widened. Performed 2953 root evaluator evaluations with a maximum evaluation depth of 6. Performed 2953 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Never found a fixpoint. Largest state had 24 variables. [2018-11-12 19:44:48,402 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:44:48,402 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 19:44:49,641 INFO L227 lantSequenceWeakener]: Weakened 465 states. On average, predicates are now at 77.8% of their original sizes. [2018-11-12 19:44:49,641 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:44:50,138 INFO L415 sIntCurrentIteration]: We unified 473 AI predicates to 473 [2018-11-12 19:44:50,138 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 19:44:50,139 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:44:50,139 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 12 [2018-11-12 19:44:50,139 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:44:50,140 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-12 19:44:50,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-12 19:44:50,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-11-12 19:44:50,141 INFO L87 Difference]: Start difference. First operand 17328 states and 23091 transitions. Second operand 8 states. [2018-11-12 19:44:58,155 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:45:15,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:45:15,026 INFO L93 Difference]: Finished difference Result 35355 states and 46995 transitions. [2018-11-12 19:45:15,026 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-12 19:45:15,027 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 474 [2018-11-12 19:45:15,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:45:15,085 INFO L225 Difference]: With dead ends: 35355 [2018-11-12 19:45:15,086 INFO L226 Difference]: Without dead ends: 18033 [2018-11-12 19:45:15,142 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 475 GetRequests, 467 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-11-12 19:45:15,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18033 states. [2018-11-12 19:45:15,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18033 to 18031. [2018-11-12 19:45:15,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18031 states. [2018-11-12 19:45:15,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18031 states to 18031 states and 23806 transitions. [2018-11-12 19:45:15,517 INFO L78 Accepts]: Start accepts. Automaton has 18031 states and 23806 transitions. Word has length 474 [2018-11-12 19:45:15,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:45:15,518 INFO L480 AbstractCegarLoop]: Abstraction has 18031 states and 23806 transitions. [2018-11-12 19:45:15,518 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-12 19:45:15,518 INFO L276 IsEmpty]: Start isEmpty. Operand 18031 states and 23806 transitions. [2018-11-12 19:45:15,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 662 [2018-11-12 19:45:15,575 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:45:15,575 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2018-11-12 19:45:15,576 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:45:15,576 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:45:15,577 INFO L82 PathProgramCache]: Analyzing trace with hash -571263680, now seen corresponding path program 1 times [2018-11-12 19:45:15,577 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:45:15,578 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:45:15,578 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:45:15,578 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:45:15,578 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:45:15,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:45:16,670 WARN L179 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-12 19:45:16,888 WARN L179 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-12 19:45:17,091 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-12 19:45:17,337 WARN L179 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-11-12 19:45:17,899 INFO L134 CoverageAnalysis]: Checked inductivity of 631 backedges. 257 proven. 369 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-12 19:45:17,899 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:45:17,899 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:45:17,900 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 662 with the following transitions: [2018-11-12 19:45:17,900 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1839], [1847], [1855], [1863], [1871], [1879], [1887], [1895], [1903], [1911], [1919], [1927], [1935], [1943], [1951], [1959], [1967], [1975], [1983], [1991], [1999], [2007], [2015], [2023], [2031], [2039], [2047], [2055], [2063], [2071], [2079], [2087], [2095], [2103], [2107], [2109], [2112], [2117], [2121], [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], [2328], [2329], [2333], [2337], [2341], [2345], [2349], [2353], [2357], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2584], [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] [2018-11-12 19:45:17,910 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:45:17,910 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:45:19,193 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:45:19,194 INFO L272 AbstractInterpreter]: Visited 287 different actions 570 times. Merged at 5 different actions 7 times. Never widened. Performed 9480 root evaluator evaluations with a maximum evaluation depth of 6. Performed 9480 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-12 19:45:19,211 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:45:19,211 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 19:45:20,885 INFO L227 lantSequenceWeakener]: Weakened 386 states. On average, predicates are now at 77.83% of their original sizes. [2018-11-12 19:45:20,885 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:45:22,990 INFO L415 sIntCurrentIteration]: We unified 660 AI predicates to 660 [2018-11-12 19:45:22,990 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 19:45:22,990 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:45:22,990 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [11] total 26 [2018-11-12 19:45:22,991 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:45:22,992 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-12 19:45:22,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-12 19:45:22,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2018-11-12 19:45:22,992 INFO L87 Difference]: Start difference. First operand 18031 states and 23806 transitions. Second operand 17 states. [2018-11-12 19:45:57,185 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:46:58,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:46:58,249 INFO L93 Difference]: Finished difference Result 37604 states and 49502 transitions. [2018-11-12 19:46:58,249 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-11-12 19:46:58,249 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 661 [2018-11-12 19:46:58,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:46:58,338 INFO L225 Difference]: With dead ends: 37604 [2018-11-12 19:46:58,338 INFO L226 Difference]: Without dead ends: 20282 [2018-11-12 19:46:58,403 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 669 GetRequests, 595 SyntacticMatches, 50 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 503 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=142, Invalid=508, Unknown=0, NotChecked=0, Total=650 [2018-11-12 19:46:58,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20282 states. [2018-11-12 19:46:58,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20282 to 20277. [2018-11-12 19:46:58,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20277 states. [2018-11-12 19:46:58,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20277 states to 20277 states and 26094 transitions. [2018-11-12 19:46:58,950 INFO L78 Accepts]: Start accepts. Automaton has 20277 states and 26094 transitions. Word has length 661 [2018-11-12 19:46:58,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:46:58,951 INFO L480 AbstractCegarLoop]: Abstraction has 20277 states and 26094 transitions. [2018-11-12 19:46:58,951 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-12 19:46:58,952 INFO L276 IsEmpty]: Start isEmpty. Operand 20277 states and 26094 transitions. [2018-11-12 19:46:59,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1049 [2018-11-12 19:46:59,034 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:46:59,035 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-12 19:46:59,035 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:46:59,035 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:46:59,037 INFO L82 PathProgramCache]: Analyzing trace with hash -969133803, now seen corresponding path program 1 times [2018-11-12 19:46:59,037 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:46:59,038 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:46:59,038 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:46:59,038 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:46:59,038 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:46:59,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:46:59,822 WARN L179 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 19:47:01,815 INFO L134 CoverageAnalysis]: Checked inductivity of 752 backedges. 305 proven. 157 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2018-11-12 19:47:01,816 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:47:01,816 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:47:01,816 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 1049 with the following transitions: [2018-11-12 19:47:01,818 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [26], [30], [34], [37], [739], [740], [744], [748], [752], [756], [760], [764], [768], [772], [776], [780], [784], [788], [792], [796], [800], [804], [808], [812], [816], [820], [824], [828], [832], [836], [840], [844], [848], [852], [856], [860], [864], [868], [872], [876], [880], [884], [888], [892], [896], [900], [904], [908], [912], [916], [920], [923], [924], [928], [932], [936], [940], [944], [948], [952], [956], [960], [964], [968], [972], [976], [980], [984], [988], [992], [996], [1000], [1004], [1008], [1012], [1016], [1020], [1024], [1028], [1032], [1036], [1040], [1044], [1048], [1052], [1056], [1060], [1064], [1068], [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], [1184], [1188], [1192], [1196], [1200], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1248], [1252], [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], [1360], [1364], [1368], [1372], [1376], [1380], [1384], [1388], [1392], [1396], [1400], [1404], [1408], [1412], [1416], [1420], [1424], [1428], [1432], [1436], [1440], [1444], [1448], [1452], [1456], [1460], [1464], [1468], [1472], [1476], [1480], [1484], [1488], [1492], [1496], [1500], [1504], [1508], [1512], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1552], [1556], [1560], [1564], [1568], [1572], [1576], [1580], [1584], [1588], [1592], [1596], [1600], [1604], [1608], [1612], [1616], [1620], [1622], [1623], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1839], [1847], [1855], [1863], [1871], [1879], [1887], [1895], [1903], [1911], [1919], [1927], [1935], [1943], [1951], [1959], [1967], [1975], [1983], [1991], [1999], [2007], [2015], [2023], [2031], [2039], [2047], [2055], [2063], [2071], [2079], [2087], [2095], [2103], [2107], [2109], [2112], [2117], [2121], [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], [2264], [2265], [2269], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2329], [2333], [2337], [2341], [2345], [2349], [2353], [2357], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [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], [2949], [2953], [2957], [2961], [2965], [2969], [2973], [2977], [2981], [2985], [2989], [2993], [2995], [2996], [3000], [3004], [3010], [3014], [3016], [3021], [3022], [3023], [3024], [3025], [3026], [3027], [3029], [3030] [2018-11-12 19:47:01,828 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:47:01,829 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:47:03,263 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:47:03,264 INFO L272 AbstractInterpreter]: Visited 537 different actions 1068 times. Merged at 5 different actions 5 times. Never widened. Performed 14969 root evaluator evaluations with a maximum evaluation depth of 6. Performed 14969 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-12 19:47:03,271 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:47:03,271 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 19:47:05,065 INFO L227 lantSequenceWeakener]: Weakened 434 states. On average, predicates are now at 77.98% of their original sizes. [2018-11-12 19:47:05,066 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:47:07,902 INFO L415 sIntCurrentIteration]: We unified 1047 AI predicates to 1047 [2018-11-12 19:47:07,902 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 19:47:07,902 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:47:07,903 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [32] imperfect sequences [9] total 39 [2018-11-12 19:47:07,903 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:47:07,904 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-11-12 19:47:07,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-11-12 19:47:07,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=858, Unknown=0, NotChecked=0, Total=992 [2018-11-12 19:47:07,905 INFO L87 Difference]: Start difference. First operand 20277 states and 26094 transitions. Second operand 32 states. Received shutdown request... [2018-11-12 19:47:31,093 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-12 19:47:31,094 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-12 19:47:31,099 WARN L205 ceAbstractionStarter]: Timeout [2018-11-12 19:47:31,099 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 07:47:31 BoogieIcfgContainer [2018-11-12 19:47:31,099 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-12 19:47:31,100 INFO L168 Benchmark]: Toolchain (without parser) took 212300.15 ms. Allocated memory was 1.5 GB in the beginning and 5.9 GB in the end (delta: 4.4 GB). Free memory was 1.4 GB in the beginning and 3.8 GB in the end (delta: -2.4 GB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2018-11-12 19:47:31,101 INFO L168 Benchmark]: CDTParser took 0.22 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. [2018-11-12 19:47:31,102 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1748.98 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: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. [2018-11-12 19:47:31,102 INFO L168 Benchmark]: Boogie Procedure Inliner took 276.17 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 784.9 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -984.1 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-11-12 19:47:31,103 INFO L168 Benchmark]: Boogie Preprocessor took 186.41 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: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. [2018-11-12 19:47:31,104 INFO L168 Benchmark]: RCFGBuilder took 8643.75 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 504.1 MB). Peak memory consumption was 504.1 MB. Max. memory is 7.1 GB. [2018-11-12 19:47:31,105 INFO L168 Benchmark]: TraceAbstraction took 201439.52 ms. Allocated memory was 2.3 GB in the beginning and 5.9 GB in the end (delta: 3.6 GB). Free memory was 1.7 GB in the beginning and 3.8 GB in the end (delta: -2.1 GB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-11-12 19:47:31,110 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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 1748.98 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: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 276.17 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 784.9 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -984.1 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 186.41 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: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8643.75 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 504.1 MB). Peak memory consumption was 504.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 201439.52 ms. Allocated memory was 2.3 GB in the beginning and 5.9 GB in the end (delta: 3.6 GB). Free memory was 1.7 GB in the beginning and 3.8 GB in the end (delta: -2.1 GB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 207]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 207). Cancelled while BasicCegarLoop was constructing difference of abstraction (20277states) and FLOYD_HOARE automaton (currently 13 states, 32 states before enhancement),while ReachableStatesComputation was computing reachable states (1173 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 775 locations, 1 error locations. TIMEOUT Result, 201.3s OverallTime, 8 OverallIterations, 4 TraceHistogramMax, 176.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2319 SDtfs, 19120 SDslu, 1009 SDs, 0 SdLazy, 39924 SolverSat, 6391 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 81.8s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 2240 GetRequests, 2010 SyntacticMatches, 135 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1193 ImplicationChecksByTransitivity, 6.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20277occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 3.8s AbstIntTime, 3 AbstIntIterations, 3 AbstIntStrong, 0.9985753353812793 AbsIntWeakeningRatio, 0.046788990825688076 AbsIntAvgWeakeningVarsNumRemoved, 16.777981651376148 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.8s AutomataMinimizationTime, 7 MinimizatonAttempts, 139 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 5.5s InterpolantComputationTime, 3107 NumberOfCodeBlocks, 3107 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 3099 ConstructedInterpolants, 0 QuantifiedInterpolants, 7502243 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 5 PerfectInterpolantSequences, 1529/2057 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown