java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem04_label10_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 13:11:39,780 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 13:11:39,782 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 13:11:39,802 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 13:11:39,802 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 13:11:39,804 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 13:11:39,806 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 13:11:39,809 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 13:11:39,812 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 13:11:39,821 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 13:11:39,822 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 13:11:39,823 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 13:11:39,826 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 13:11:39,827 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 13:11:39,828 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 13:11:39,832 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 13:11:39,833 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 13:11:39,839 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 13:11:39,846 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 13:11:39,847 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 13:11:39,849 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 13:11:39,852 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 13:11:39,858 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 13:11:39,859 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 13:11:39,859 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 13:11:39,860 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 13:11:39,862 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 13:11:39,863 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 13:11:39,864 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 13:11:39,865 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 13:11:39,865 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 13:11:39,866 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 13:11:39,866 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 13:11:39,866 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 13:11:39,867 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 13:11:39,868 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 13:11:39,868 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf [2018-11-07 13:11:39,883 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 13:11:39,884 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 13:11:39,885 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 13:11:39,885 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 13:11:39,885 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 13:11:39,885 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 13:11:39,886 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 13:11:39,886 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 13:11:39,886 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 13:11:39,886 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 13:11:39,887 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 13:11:39,887 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 13:11:39,888 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 13:11:39,888 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 13:11:39,888 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 13:11:39,888 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 13:11:39,888 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 13:11:39,889 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 13:11:39,889 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 13:11:39,889 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 13:11:39,889 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 13:11:39,890 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 13:11:39,890 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 13:11:39,890 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 13:11:39,890 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 13:11:39,890 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 13:11:39,891 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 13:11:39,891 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 13:11:39,891 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 13:11:39,891 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 13:11:39,892 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 13:11:39,892 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 13:11:39,892 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 13:11:39,892 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 13:11:39,942 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 13:11:39,962 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 13:11:39,968 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 13:11:39,970 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 13:11:39,971 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 13:11:39,972 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label10_true-unreach-call.c [2018-11-07 13:11:40,042 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f1cbf1a8/0a434e4bd8b14b1bb92037f4529800b8/FLAG098b74e04 [2018-11-07 13:11:40,917 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 13:11:40,918 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem04_label10_true-unreach-call.c [2018-11-07 13:11:40,951 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f1cbf1a8/0a434e4bd8b14b1bb92037f4529800b8/FLAG098b74e04 [2018-11-07 13:11:40,968 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f1cbf1a8/0a434e4bd8b14b1bb92037f4529800b8 [2018-11-07 13:11:40,981 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 13:11:40,983 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 13:11:40,984 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 13:11:40,984 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 13:11:40,994 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 13:11:40,996 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:11:40" (1/1) ... [2018-11-07 13:11:41,000 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@710be24e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:11:40, skipping insertion in model container [2018-11-07 13:11:41,001 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:11:40" (1/1) ... [2018-11-07 13:11:41,013 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 13:11:41,179 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 13:11:42,710 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 13:11:42,717 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 13:11:43,465 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 13:11:43,509 INFO L193 MainTranslator]: Completed translation [2018-11-07 13:11:43,509 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:11:43 WrapperNode [2018-11-07 13:11:43,510 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 13:11:43,511 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 13:11:43,511 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 13:11:43,511 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 13:11:43,523 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:11:43" (1/1) ... [2018-11-07 13:11:44,010 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:11:43" (1/1) ... [2018-11-07 13:11:44,022 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 13:11:44,023 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 13:11:44,023 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 13:11:44,023 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 13:11:44,036 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:11:43" (1/1) ... [2018-11-07 13:11:44,037 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:11:43" (1/1) ... [2018-11-07 13:11:44,068 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:11:43" (1/1) ... [2018-11-07 13:11:44,069 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:11:43" (1/1) ... [2018-11-07 13:11:44,204 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:11:43" (1/1) ... [2018-11-07 13:11:44,250 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:11:43" (1/1) ... [2018-11-07 13:11:44,295 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:11:43" (1/1) ... [2018-11-07 13:11:44,337 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 13:11:44,338 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 13:11:44,338 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 13:11:44,338 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 13:11:44,339 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:11:43" (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 13:11:44,413 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 13:11:44,414 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 13:11:44,414 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 13:11:44,414 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-07 13:11:44,414 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-07 13:11:44,414 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 13:11:44,415 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 13:11:44,415 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 13:11:44,415 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 13:11:44,415 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 13:11:44,415 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 13:11:44,416 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 13:11:44,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 13:11:44,417 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 13:11:44,417 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 13:11:55,691 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 13:11:55,691 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:11:55 BoogieIcfgContainer [2018-11-07 13:11:55,692 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 13:11:55,693 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 13:11:55,694 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 13:11:55,697 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 13:11:55,698 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:11:40" (1/3) ... [2018-11-07 13:11:55,699 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f5a764d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:11:55, skipping insertion in model container [2018-11-07 13:11:55,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:11:43" (2/3) ... [2018-11-07 13:11:55,700 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f5a764d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:11:55, skipping insertion in model container [2018-11-07 13:11:55,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:11:55" (3/3) ... [2018-11-07 13:11:55,703 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem04_label10_true-unreach-call.c [2018-11-07 13:11:55,714 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 13:11:55,724 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 13:11:55,742 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 13:11:55,791 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 13:11:55,792 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 13:11:55,792 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 13:11:55,792 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 13:11:55,792 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 13:11:55,792 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 13:11:55,792 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 13:11:55,793 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 13:11:55,836 INFO L276 IsEmpty]: Start isEmpty. Operand 907 states. [2018-11-07 13:11:55,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 824 [2018-11-07 13:11:55,901 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 13:11:55,903 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:11:55,907 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 13:11:55,914 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 13:11:55,915 INFO L82 PathProgramCache]: Analyzing trace with hash 310818487, now seen corresponding path program 1 times [2018-11-07 13:11:55,918 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 13:11:55,971 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 13:11:55,971 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 13:11:55,972 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 13:11:55,972 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 13:11:56,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 13:11:58,221 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 13:11:58,223 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 13:11:58,223 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 13:11:58,224 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 13:11:58,231 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 13:11:58,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 13:11:58,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 13:11:58,247 INFO L87 Difference]: Start difference. First operand 907 states. Second operand 3 states. [2018-11-07 13:12:05,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 13:12:05,423 INFO L93 Difference]: Finished difference Result 2647 states and 5102 transitions. [2018-11-07 13:12:05,425 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 13:12:05,426 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 823 [2018-11-07 13:12:05,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 13:12:05,475 INFO L225 Difference]: With dead ends: 2647 [2018-11-07 13:12:05,475 INFO L226 Difference]: Without dead ends: 1738 [2018-11-07 13:12:05,493 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 5 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 13:12:05,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1738 states. [2018-11-07 13:12:05,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1738 to 1738. [2018-11-07 13:12:05,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1738 states. [2018-11-07 13:12:05,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1738 states to 1738 states and 3275 transitions. [2018-11-07 13:12:05,671 INFO L78 Accepts]: Start accepts. Automaton has 1738 states and 3275 transitions. Word has length 823 [2018-11-07 13:12:05,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 13:12:05,675 INFO L480 AbstractCegarLoop]: Abstraction has 1738 states and 3275 transitions. [2018-11-07 13:12:05,676 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 13:12:05,677 INFO L276 IsEmpty]: Start isEmpty. Operand 1738 states and 3275 transitions. [2018-11-07 13:12:05,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 834 [2018-11-07 13:12:05,706 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 13:12:05,706 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:12:05,708 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 13:12:05,708 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 13:12:05,709 INFO L82 PathProgramCache]: Analyzing trace with hash -1945161120, now seen corresponding path program 1 times [2018-11-07 13:12:05,709 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 13:12:05,712 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 13:12:05,712 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 13:12:05,712 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 13:12:05,713 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 13:12:05,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 13:12:06,053 WARN L179 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 13:12:06,505 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 13:12:06,505 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 13:12:06,506 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 13:12:06,506 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 13:12:06,509 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 13:12:06,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 13:12:06,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 13:12:06,510 INFO L87 Difference]: Start difference. First operand 1738 states and 3275 transitions. Second operand 6 states. [2018-11-07 13:12:16,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 13:12:16,581 INFO L93 Difference]: Finished difference Result 5355 states and 10177 transitions. [2018-11-07 13:12:16,581 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 13:12:16,582 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 833 [2018-11-07 13:12:16,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 13:12:16,608 INFO L225 Difference]: With dead ends: 5355 [2018-11-07 13:12:16,609 INFO L226 Difference]: Without dead ends: 3623 [2018-11-07 13:12:16,617 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 13:12:16,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3623 states. [2018-11-07 13:12:16,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3623 to 3593. [2018-11-07 13:12:16,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3593 states. [2018-11-07 13:12:16,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3593 states to 3593 states and 6371 transitions. [2018-11-07 13:12:16,733 INFO L78 Accepts]: Start accepts. Automaton has 3593 states and 6371 transitions. Word has length 833 [2018-11-07 13:12:16,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 13:12:16,734 INFO L480 AbstractCegarLoop]: Abstraction has 3593 states and 6371 transitions. [2018-11-07 13:12:16,734 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 13:12:16,734 INFO L276 IsEmpty]: Start isEmpty. Operand 3593 states and 6371 transitions. [2018-11-07 13:12:16,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 854 [2018-11-07 13:12:16,757 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 13:12:16,758 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:12:16,758 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 13:12:16,758 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 13:12:16,760 INFO L82 PathProgramCache]: Analyzing trace with hash 881726813, now seen corresponding path program 1 times [2018-11-07 13:12:16,760 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 13:12:16,761 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 13:12:16,761 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 13:12:16,762 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 13:12:16,762 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 13:12:16,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 13:12:17,178 WARN L179 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 13:12:18,083 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 25 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-11-07 13:12:18,083 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 13:12:18,084 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 13:12:18,086 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 854 with the following transitions: [2018-11-07 13:12:18,102 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [26], [30], [34], [38], [42], [46], [50], [54], [58], [62], [66], [70], [74], [78], [82], [86], [90], [94], [98], [102], [106], [110], [114], [118], [122], [126], [130], [134], [138], [142], [146], [150], [154], [158], [162], [166], [170], [174], [178], [182], [186], [190], [194], [198], [202], [206], [210], [214], [218], [222], [226], [230], [234], [238], [242], [246], [250], [254], [258], [262], [266], [270], [274], [278], [282], [286], [290], [294], [298], [302], [306], [310], [314], [318], [322], [326], [330], [334], [338], [342], [346], [350], [354], [358], [362], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [513], [521], [529], [537], [545], [553], [561], [569], [577], [585], [593], [601], [609], [617], [625], [633], [641], [649], [657], [665], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [797], [799], [854], [858], [862], [866], [870], [874], [878], [882], [886], [890], [894], [898], [902], [906], [910], [914], [918], [922], [926], [930], [934], [938], [942], [946], [950], [954], [958], [962], [966], [970], [974], [978], [982], [986], [990], [994], [998], [1002], [1006], [1010], [1014], [1018], [1022], [1026], [1030], [1034], [1038], [1042], [1046], [1050], [1054], [1058], [1062], [1066], [1070], [1074], [1078], [1082], [1086], [1090], [1094], [1098], [1102], [1106], [1110], [1114], [1118], [1122], [1126], [1130], [1134], [1138], [1142], [1146], [1150], [1154], [1158], [1162], [1166], [1170], [1174], [1178], [1182], [1186], [1190], [1194], [1198], [1202], [1206], [1210], [1214], [1218], [1222], [1226], [1230], [1234], [1238], [1242], [1246], [1250], [1254], [1258], [1262], [1266], [1270], [1274], [1278], [1282], [1286], [1290], [1294], [1298], [1302], [1306], [1310], [1314], [1318], [1322], [1326], [1330], [1334], [1338], [1342], [1346], [1350], [1354], [1358], [1362], [1366], [1370], [1374], [1378], [1382], [1386], [1390], [1394], [1398], [1402], [1406], [1410], [1414], [1418], [1422], [1426], [1430], [1434], [1438], [1442], [1446], [1450], [1454], [1458], [1462], [1466], [1470], [1474], [1478], [1482], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1562], [1566], [1570], [1574], [1578], [1582], [1586], [1590], [1594], [1598], [1602], [1606], [1610], [1614], [1618], [1622], [1626], [1630], [1634], [1638], [1642], [1646], [1650], [1654], [1658], [1662], [1666], [1670], [1674], [1678], [1682], [1686], [1690], [1694], [1698], [1702], [1706], [1710], [1714], [1718], [1722], [1726], [1730], [1734], [1738], [1742], [1746], [1750], [1754], [1758], [1762], [1766], [1770], [1774], [1778], [1782], [1786], [1790], [1794], [1798], [1802], [1806], [1810], [1814], [1818], [1822], [1826], [1830], [1834], [1838], [1842], [1846], [1850], [1854], [1858], [1862], [1866], [1870], [1874], [1878], [1882], [1886], [1890], [1894], [1898], [1902], [1906], [1910], [1914], [1918], [1922], [1926], [1930], [1934], [1938], [1942], [1946], [1950], [1954], [1958], [1962], [1966], [1970], [1974], [1978], [1982], [1986], [1990], [1994], [1998], [2002], [2006], [2010], [2014], [2018], [2022], [2026], [2030], [2034], [2038], [2042], [2046], [2050], [2054], [2058], [2062], [2066], [2070], [2074], [2078], [2082], [2086], [2090], [2094], [2098], [2102], [2106], [2110], [2114], [2118], [2122], [2126], [2130], [2134], [2138], [2142], [2146], [2150], [2154], [2158], [2162], [2166], [2170], [2174], [2178], [2182], [2186], [2190], [2194], [2198], [2202], [2206], [2210], [2214], [2218], [2222], [2226], [2230], [2234], [2238], [2242], [2246], [2250], [2254], [2258], [2262], [2266], [2270], [2274], [2278], [2282], [2286], [2290], [2294], [2298], [2302], [2306], [2310], [2314], [2318], [2322], [2326], [2330], [2334], [2338], [2342], [2346], [2350], [2354], [2358], [2362], [2366], [2370], [2374], [2378], [2382], [2386], [2390], [2394], [2398], [2402], [2406], [2410], [2414], [2418], [2422], [2426], [2430], [2434], [2438], [2442], [2446], [2450], [2454], [2458], [2462], [2466], [2470], [2474], [2478], [2482], [2486], [2490], [2494], [2498], [2502], [2506], [2510], [2514], [2518], [2522], [2526], [2530], [2534], [2538], [2542], [2546], [2550], [2554], [2558], [2562], [2566], [2570], [2574], [2578], [2582], [2586], [2590], [2594], [2598], [2602], [2606], [2610], [2614], [2618], [2622], [2626], [2629], [2630], [2634], [2638], [2642], [2646], [2650], [2654], [2658], [2662], [2666], [2669], [2670], [2674], [2678], [2682], [2686], [2690], [2694], [2698], [2702], [2706], [2710], [2714], [2718], [2722], [2726], [2730], [2734], [2738], [2742], [2746], [2750], [2754], [2758], [2762], [2766], [2770], [2774], [2778], [2782], [2786], [2790], [2794], [2798], [2802], [2806], [2810], [2814], [2818], [2822], [2826], [2830], [2834], [2838], [2842], [2846], [2850], [2854], [2858], [2862], [2866], [2870], [2874], [2878], [2882], [2886], [2890], [2894], [2898], [2902], [2906], [2910], [2914], [2918], [2922], [2926], [2930], [2934], [2938], [2942], [2946], [2950], [2954], [2958], [2962], [2966], [2970], [2974], [2978], [2982], [2986], [2990], [2994], [2998], [3002], [3006], [3010], [3014], [3018], [3022], [3026], [3030], [3034], [3038], [3042], [3046], [3050], [3054], [3058], [3062], [3066], [3070], [3074], [3078], [3082], [3086], [3090], [3094], [3098], [3102], [3106], [3110], [3114], [3118], [3122], [3126], [3130], [3134], [3138], [3142], [3146], [3150], [3154], [3158], [3162], [3166], [3170], [3174], [3178], [3182], [3186], [3190], [3194], [3198], [3202], [3206], [3210], [3214], [3218], [3222], [3226], [3230], [3234], [3238], [3242], [3246], [3250], [3254], [3258], [3262], [3266], [3270], [3274], [3278], [3282], [3286], [3290], [3294], [3298], [3302], [3306], [3310], [3314], [3318], [3322], [3326], [3330], [3334], [3338], [3342], [3346], [3350], [3354], [3358], [3362], [3366], [3370], [3374], [3378], [3382], [3386], [3390], [3394], [3398], [3402], [3406], [3410], [3414], [3418], [3422], [3426], [3430], [3434], [3438], [3442], [3446], [3450], [3454], [3458], [3462], [3466], [3470], [3474], [3478], [3482], [3486], [3490], [3494], [3498], [3502], [3505], [3509], [3513], [3519], [3523], [3525], [3530], [3532], [3534], [3536], [3537], [3538], [3540], [3541] [2018-11-07 13:12:18,222 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 13:12:18,223 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 13:12:33,021 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 13:12:33,023 INFO L272 AbstractInterpreter]: Visited 827 different actions 1648 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 44 variables. [2018-11-07 13:12:33,065 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 13:12:33,066 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 13:12:41,374 INFO L227 lantSequenceWeakener]: Weakened 51 states. On average, predicates are now at 78.6% of their original sizes. [2018-11-07 13:12:41,375 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 13:12:42,225 INFO L415 sIntCurrentIteration]: We unified 852 AI predicates to 852 [2018-11-07 13:12:42,226 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 13:12:42,227 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 13:12:42,227 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [24] imperfect sequences [5] total 27 [2018-11-07 13:12:42,227 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 13:12:42,229 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-11-07 13:12:42,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-11-07 13:12:42,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=456, Unknown=0, NotChecked=0, Total=552 [2018-11-07 13:12:42,231 INFO L87 Difference]: Start difference. First operand 3593 states and 6371 transitions. Second operand 24 states. [2018-11-07 13:14:01,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 13:14:01,918 INFO L93 Difference]: Finished difference Result 10545 states and 18626 transitions. [2018-11-07 13:14:01,918 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-11-07 13:14:01,919 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 853 [2018-11-07 13:14:01,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 13:14:01,949 INFO L225 Difference]: With dead ends: 10545 [2018-11-07 13:14:01,949 INFO L226 Difference]: Without dead ends: 6958 [2018-11-07 13:14:01,959 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 864 GetRequests, 830 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 310 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=196, Invalid=1064, Unknown=0, NotChecked=0, Total=1260 [2018-11-07 13:14:01,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6958 states. [2018-11-07 13:14:02,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6958 to 6944. [2018-11-07 13:14:02,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6944 states. [2018-11-07 13:14:02,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6944 states to 6944 states and 9839 transitions. [2018-11-07 13:14:02,117 INFO L78 Accepts]: Start accepts. Automaton has 6944 states and 9839 transitions. Word has length 853 [2018-11-07 13:14:02,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 13:14:02,118 INFO L480 AbstractCegarLoop]: Abstraction has 6944 states and 9839 transitions. [2018-11-07 13:14:02,118 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-11-07 13:14:02,118 INFO L276 IsEmpty]: Start isEmpty. Operand 6944 states and 9839 transitions. [2018-11-07 13:14:02,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 883 [2018-11-07 13:14:02,140 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 13:14:02,141 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:14:02,141 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 13:14:02,142 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 13:14:02,142 INFO L82 PathProgramCache]: Analyzing trace with hash -311071802, now seen corresponding path program 1 times [2018-11-07 13:14:02,142 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 13:14:02,143 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 13:14:02,144 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 13:14:02,144 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 13:14:02,144 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 13:14:02,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 13:14:02,529 WARN L179 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-11-07 13:14:03,083 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 56 proven. 31 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 13:14:03,084 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 13:14:03,084 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 13:14:03,085 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 883 with the following transitions: [2018-11-07 13:14:03,086 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [26], [30], [34], [38], [42], [46], [50], [54], [58], [62], [66], [70], [74], [78], [82], [86], [90], [94], [98], [102], [106], [110], [114], [118], [122], [126], [130], [134], [138], [142], [146], [150], [154], [158], [162], [166], [170], [174], [178], [182], [186], [190], [194], [198], [202], [206], [210], [214], [218], [222], [226], [230], [234], [238], [242], [246], [250], [254], [258], [262], [266], [270], [274], [278], [282], [286], [290], [294], [298], [302], [306], [310], [314], [318], [322], [326], [330], [334], [338], [342], [346], [350], [354], [358], [362], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [513], [521], [529], [537], [545], [553], [561], [569], [577], [585], [593], [601], [609], [617], [625], [633], [641], [649], [657], [665], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [797], [799], [854], [858], [862], [866], [870], [874], [878], [882], [886], [890], [894], [898], [902], [906], [910], [914], [918], [922], [926], [930], [934], [938], [942], [946], [950], [954], [958], [962], [966], [970], [974], [978], [982], [986], [990], [994], [998], [1002], [1006], [1010], [1014], [1018], [1022], [1026], [1030], [1034], [1038], [1042], [1046], [1050], [1054], [1058], [1062], [1066], [1070], [1074], [1078], [1082], [1086], [1090], [1094], [1098], [1102], [1106], [1110], [1114], [1118], [1122], [1126], [1130], [1134], [1138], [1142], [1146], [1150], [1154], [1158], [1162], [1166], [1170], [1174], [1178], [1182], [1186], [1190], [1194], [1198], [1202], [1206], [1210], [1214], [1218], [1222], [1226], [1230], [1234], [1238], [1242], [1246], [1250], [1254], [1258], [1262], [1266], [1270], [1274], [1278], [1282], [1286], [1290], [1294], [1298], [1302], [1306], [1310], [1314], [1318], [1322], [1326], [1330], [1334], [1338], [1342], [1346], [1350], [1354], [1358], [1362], [1366], [1370], [1374], [1378], [1382], [1386], [1390], [1394], [1398], [1402], [1406], [1410], [1414], [1418], [1422], [1426], [1430], [1434], [1438], [1442], [1446], [1450], [1454], [1458], [1462], [1466], [1470], [1474], [1478], [1482], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1562], [1566], [1570], [1574], [1578], [1582], [1586], [1590], [1594], [1598], [1602], [1606], [1610], [1614], [1618], [1622], [1626], [1630], [1634], [1638], [1642], [1646], [1650], [1654], [1658], [1662], [1666], [1670], [1674], [1678], [1682], [1686], [1690], [1694], [1698], [1702], [1706], [1710], [1714], [1718], [1722], [1726], [1730], [1734], [1738], [1742], [1746], [1750], [1754], [1758], [1762], [1766], [1770], [1774], [1778], [1782], [1786], [1790], [1794], [1798], [1802], [1806], [1810], [1814], [1818], [1822], [1826], [1830], [1834], [1838], [1842], [1846], [1850], [1854], [1858], [1862], [1866], [1870], [1874], [1878], [1882], [1886], [1890], [1894], [1898], [1902], [1906], [1910], [1914], [1918], [1922], [1926], [1930], [1934], [1938], [1942], [1946], [1950], [1954], [1958], [1962], [1966], [1970], [1974], [1978], [1982], [1986], [1990], [1994], [1998], [2002], [2006], [2010], [2014], [2018], [2022], [2026], [2030], [2034], [2038], [2042], [2046], [2050], [2054], [2058], [2062], [2066], [2070], [2074], [2078], [2082], [2086], [2090], [2094], [2098], [2102], [2106], [2110], [2114], [2118], [2122], [2126], [2130], [2134], [2138], [2142], [2146], [2150], [2154], [2158], [2162], [2166], [2170], [2174], [2178], [2182], [2186], [2190], [2194], [2198], [2202], [2206], [2210], [2214], [2218], [2222], [2226], [2230], [2234], [2238], [2242], [2246], [2250], [2254], [2258], [2262], [2266], [2270], [2274], [2278], [2282], [2286], [2290], [2294], [2298], [2302], [2306], [2310], [2314], [2318], [2322], [2326], [2330], [2334], [2338], [2342], [2346], [2350], [2354], [2358], [2362], [2366], [2370], [2374], [2378], [2382], [2386], [2390], [2394], [2398], [2402], [2406], [2410], [2414], [2418], [2422], [2426], [2430], [2434], [2438], [2442], [2446], [2450], [2454], [2458], [2462], [2466], [2470], [2474], [2478], [2482], [2486], [2490], [2494], [2498], [2502], [2506], [2510], [2514], [2518], [2522], [2526], [2530], [2534], [2538], [2542], [2546], [2550], [2554], [2558], [2562], [2566], [2570], [2574], [2578], [2582], [2586], [2590], [2594], [2598], [2602], [2606], [2610], [2614], [2618], [2622], [2626], [2629], [2630], [2634], [2638], [2642], [2646], [2650], [2654], [2658], [2662], [2666], [2670], [2674], [2677], [2678], [2682], [2686], [2690], [2694], [2697], [2698], [2702], [2706], [2710], [2714], [2718], [2722], [2726], [2730], [2734], [2738], [2742], [2746], [2750], [2754], [2758], [2762], [2766], [2770], [2774], [2778], [2782], [2786], [2790], [2794], [2798], [2802], [2806], [2810], [2814], [2818], [2822], [2826], [2830], [2834], [2838], [2842], [2846], [2850], [2854], [2858], [2862], [2866], [2870], [2874], [2878], [2882], [2886], [2890], [2894], [2898], [2902], [2906], [2910], [2914], [2918], [2922], [2926], [2930], [2934], [2938], [2942], [2946], [2950], [2954], [2958], [2962], [2966], [2970], [2974], [2978], [2982], [2986], [2990], [2994], [2998], [3002], [3006], [3010], [3014], [3018], [3022], [3026], [3030], [3034], [3038], [3042], [3046], [3050], [3054], [3058], [3062], [3066], [3070], [3074], [3078], [3082], [3086], [3090], [3094], [3098], [3102], [3106], [3110], [3114], [3118], [3122], [3126], [3130], [3134], [3138], [3142], [3146], [3150], [3154], [3158], [3162], [3166], [3170], [3174], [3178], [3182], [3186], [3190], [3194], [3198], [3202], [3206], [3210], [3214], [3218], [3222], [3226], [3230], [3234], [3238], [3242], [3246], [3250], [3254], [3258], [3262], [3266], [3270], [3274], [3278], [3282], [3286], [3290], [3294], [3298], [3302], [3306], [3310], [3314], [3318], [3322], [3326], [3330], [3334], [3338], [3342], [3346], [3350], [3354], [3358], [3362], [3366], [3370], [3374], [3378], [3382], [3386], [3390], [3394], [3398], [3402], [3406], [3410], [3414], [3418], [3422], [3426], [3430], [3434], [3438], [3442], [3446], [3450], [3454], [3458], [3462], [3466], [3470], [3474], [3478], [3482], [3486], [3490], [3494], [3498], [3502], [3505], [3509], [3513], [3519], [3523], [3525], [3530], [3532], [3534], [3536], [3537], [3538], [3540], [3541] [2018-11-07 13:14:03,107 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 13:14:03,107 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 13:14:12,198 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 13:14:12,198 INFO L272 AbstractInterpreter]: Visited 828 different actions 1652 times. Merged at 5 different actions 7 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 44 variables. [2018-11-07 13:14:12,203 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 13:14:12,203 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 13:14:16,642 INFO L227 lantSequenceWeakener]: Weakened 80 states. On average, predicates are now at 78.68% of their original sizes. [2018-11-07 13:14:16,642 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 13:14:17,332 INFO L415 sIntCurrentIteration]: We unified 881 AI predicates to 881 [2018-11-07 13:14:17,332 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 13:14:17,332 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 13:14:17,333 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [24] imperfect sequences [11] total 33 [2018-11-07 13:14:17,333 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 13:14:17,334 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-11-07 13:14:17,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-11-07 13:14:17,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=472, Unknown=0, NotChecked=0, Total=552 [2018-11-07 13:14:17,335 INFO L87 Difference]: Start difference. First operand 6944 states and 9839 transitions. Second operand 24 states. Received shutdown request... [2018-11-07 13:15:31,848 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-11-07 13:15:31,849 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 13:15:31,855 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 13:15:31,855 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 01:15:31 BoogieIcfgContainer [2018-11-07 13:15:31,855 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 13:15:31,856 INFO L168 Benchmark]: Toolchain (without parser) took 230874.33 ms. Allocated memory was 1.5 GB in the beginning and 4.0 GB in the end (delta: 2.5 GB). Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 291.3 MB). Peak memory consumption was 2.8 GB. Max. memory is 7.1 GB. [2018-11-07 13:15:31,857 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 13:15:31,858 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2525.80 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. [2018-11-07 13:15:31,859 INFO L168 Benchmark]: Boogie Procedure Inliner took 511.40 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 821.6 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 54.9 MB. Max. memory is 7.1 GB. [2018-11-07 13:15:31,860 INFO L168 Benchmark]: Boogie Preprocessor took 314.65 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 24.9 MB). Peak memory consumption was 24.9 MB. Max. memory is 7.1 GB. [2018-11-07 13:15:31,861 INFO L168 Benchmark]: RCFGBuilder took 11354.91 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 153.1 MB). Free memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: -113.8 MB). Peak memory consumption was 694.3 MB. Max. memory is 7.1 GB. [2018-11-07 13:15:31,862 INFO L168 Benchmark]: TraceAbstraction took 216161.75 ms. Allocated memory was 2.5 GB in the beginning and 4.0 GB in the end (delta: 1.5 GB). Free memory was 2.4 GB in the beginning and 1.1 GB in the end (delta: 1.3 GB). Peak memory consumption was 2.8 GB. Max. memory is 7.1 GB. [2018-11-07 13:15:31,867 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2525.80 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 511.40 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 821.6 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 54.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 314.65 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 24.9 MB). Peak memory consumption was 24.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 11354.91 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 153.1 MB). Free memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: -113.8 MB). Peak memory consumption was 694.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 216161.75 ms. Allocated memory was 2.5 GB in the beginning and 4.0 GB in the end (delta: 1.5 GB). Free memory was 2.4 GB in the beginning and 1.1 GB in the end (delta: 1.3 GB). Peak memory consumption was 2.8 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 4787]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 4787). Cancelled while BasicCegarLoop was constructing difference of abstraction (6944states) and FLOYD_HOARE automaton (currently 16 states, 24 states before enhancement),while ReachableStatesComputation was computing reachable states (6726 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 907 locations, 1 error locations. TIMEOUT Result, 216.0s OverallTime, 4 OverallIterations, 4 TraceHistogramMax, 171.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1770 SDtfs, 12988 SDslu, 560 SDs, 0 SdLazy, 28315 SolverSat, 5161 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 98.2s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 1773 GetRequests, 1693 SyntacticMatches, 6 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 589 ImplicationChecksByTransitivity, 2.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6944occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 24.1s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9993095143878913 AbsIntWeakeningRatio, 0.05193306405077899 AbsIntAvgWeakeningVarsNumRemoved, 37.22042700519331 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 3 MinimizatonAttempts, 44 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.6s InterpolantComputationTime, 3391 NumberOfCodeBlocks, 3391 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 3387 ConstructedInterpolants, 0 QuantifiedInterpolants, 5364512 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 100/133 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown