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-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem19_label29_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 06:59:06,850 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 06:59:06,852 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 06:59:06,864 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 06:59:06,865 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 06:59:06,866 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 06:59:06,867 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 06:59:06,869 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 06:59:06,871 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 06:59:06,871 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 06:59:06,872 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 06:59:06,873 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 06:59:06,874 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 06:59:06,875 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 06:59:06,876 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 06:59:06,877 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 06:59:06,878 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 06:59:06,879 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 06:59:06,881 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 06:59:06,883 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 06:59:06,887 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 06:59:06,889 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 06:59:06,894 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 06:59:06,895 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 06:59:06,895 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 06:59:06,897 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 06:59:06,898 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 06:59:06,898 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 06:59:06,901 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 06:59:06,903 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 06:59:06,903 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 06:59:06,904 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 06:59:06,904 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 06:59:06,905 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 06:59:06,905 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 06:59:06,907 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 06:59:06,908 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-11-07 06:59:06,940 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 06:59:06,940 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 06:59:06,944 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 06:59:06,944 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 06:59:06,944 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 06:59:06,944 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 06:59:06,945 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-07 06:59:06,945 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 06:59:06,945 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 06:59:06,945 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 06:59:06,945 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 06:59:06,946 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 06:59:06,946 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 06:59:06,946 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 06:59:06,947 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 06:59:06,947 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 06:59:06,947 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 06:59:06,947 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 06:59:06,947 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 06:59:06,948 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 06:59:06,948 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 06:59:06,948 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 06:59:06,948 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 06:59:06,948 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 06:59:06,949 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 06:59:06,949 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 06:59:06,949 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 06:59:06,949 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 06:59:06,949 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 06:59:06,950 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 06:59:06,950 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 06:59:06,950 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 06:59:06,950 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 06:59:06,950 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 06:59:06,951 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 06:59:06,951 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 06:59:06,999 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 06:59:07,018 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 06:59:07,022 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 06:59:07,024 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 06:59:07,025 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 06:59:07,025 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label29_false-unreach-call.c [2018-11-07 06:59:07,095 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24ab6a00c/d37e0f71cac84aeca2aeea2948ededc4/FLAG750e6d32d [2018-11-07 06:59:08,028 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 06:59:08,029 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label29_false-unreach-call.c [2018-11-07 06:59:08,088 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24ab6a00c/d37e0f71cac84aeca2aeea2948ededc4/FLAG750e6d32d [2018-11-07 06:59:08,107 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24ab6a00c/d37e0f71cac84aeca2aeea2948ededc4 [2018-11-07 06:59:08,122 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 06:59:08,124 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 06:59:08,126 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 06:59:08,126 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 06:59:08,130 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 06:59:08,132 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:59:08" (1/1) ... [2018-11-07 06:59:08,135 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70c1fa53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:59:08, skipping insertion in model container [2018-11-07 06:59:08,135 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:59:08" (1/1) ... [2018-11-07 06:59:08,147 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 06:59:08,384 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 06:59:10,486 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 06:59:10,495 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 06:59:11,742 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 06:59:11,804 INFO L193 MainTranslator]: Completed translation [2018-11-07 06:59:11,804 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:59:11 WrapperNode [2018-11-07 06:59:11,805 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 06:59:11,805 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 06:59:11,807 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 06:59:11,807 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 06:59:11,818 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:59:11" (1/1) ... [2018-11-07 06:59:12,298 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:59:11" (1/1) ... [2018-11-07 06:59:12,310 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 06:59:12,311 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 06:59:12,311 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 06:59:12,311 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 06:59:12,320 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:59:11" (1/1) ... [2018-11-07 06:59:12,321 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:59:11" (1/1) ... [2018-11-07 06:59:12,361 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:59:11" (1/1) ... [2018-11-07 06:59:12,361 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:59:11" (1/1) ... [2018-11-07 06:59:12,503 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:59:11" (1/1) ... [2018-11-07 06:59:12,549 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:59:11" (1/1) ... [2018-11-07 06:59:12,598 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:59:11" (1/1) ... [2018-11-07 06:59:12,693 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 06:59:12,694 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 06:59:12,694 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 06:59:12,694 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 06:59:12,695 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:59:11" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 06:59:12,769 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 06:59:12,770 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 06:59:12,770 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 06:59:12,770 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2018-11-07 06:59:12,770 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2018-11-07 06:59:12,770 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2018-11-07 06:59:12,771 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2018-11-07 06:59:12,771 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-07 06:59:12,771 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-07 06:59:12,771 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 06:59:12,771 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 06:59:12,772 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 06:59:12,772 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 06:59:12,773 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 06:59:12,773 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 06:59:12,773 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 06:59:12,773 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 06:59:12,773 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 06:59:12,774 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 06:59:27,602 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 06:59:27,602 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:59:27 BoogieIcfgContainer [2018-11-07 06:59:27,602 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 06:59:27,604 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 06:59:27,604 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 06:59:27,607 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 06:59:27,608 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 06:59:08" (1/3) ... [2018-11-07 06:59:27,609 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ce3e655 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:59:27, skipping insertion in model container [2018-11-07 06:59:27,609 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:59:11" (2/3) ... [2018-11-07 06:59:27,609 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ce3e655 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:59:27, skipping insertion in model container [2018-11-07 06:59:27,610 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:59:27" (3/3) ... [2018-11-07 06:59:27,612 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label29_false-unreach-call.c [2018-11-07 06:59:27,622 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 06:59:27,634 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 06:59:27,653 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 06:59:27,707 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 06:59:27,707 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 06:59:27,708 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 06:59:27,708 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 06:59:27,708 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 06:59:27,708 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 06:59:27,708 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 06:59:27,708 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 06:59:27,765 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states. [2018-11-07 06:59:27,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-11-07 06:59:27,773 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:59:27,775 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] [2018-11-07 06:59:27,777 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:59:27,784 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:59:27,784 INFO L82 PathProgramCache]: Analyzing trace with hash -1784258372, now seen corresponding path program 1 times [2018-11-07 06:59:27,787 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:59:27,844 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:59:27,844 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:59:27,844 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:59:27,844 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:59:27,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:59:28,236 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 06:59:28,241 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 06:59:28,244 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 06:59:28,244 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 06:59:28,251 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 06:59:28,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 06:59:28,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 06:59:28,274 INFO L87 Difference]: Start difference. First operand 1778 states. Second operand 3 states. [2018-11-07 06:59:41,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:59:41,626 INFO L93 Difference]: Finished difference Result 4999 states and 9420 transitions. [2018-11-07 06:59:41,627 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 06:59:41,628 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2018-11-07 06:59:41,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:59:41,671 INFO L225 Difference]: With dead ends: 4999 [2018-11-07 06:59:41,671 INFO L226 Difference]: Without dead ends: 3219 [2018-11-07 06:59:41,684 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 06:59:41,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3219 states. [2018-11-07 06:59:41,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3219 to 3215. [2018-11-07 06:59:41,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3215 states. [2018-11-07 06:59:41,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3215 states to 3215 states and 5845 transitions. [2018-11-07 06:59:41,881 INFO L78 Accepts]: Start accepts. Automaton has 3215 states and 5845 transitions. Word has length 28 [2018-11-07 06:59:41,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:59:41,881 INFO L480 AbstractCegarLoop]: Abstraction has 3215 states and 5845 transitions. [2018-11-07 06:59:41,882 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 06:59:41,882 INFO L276 IsEmpty]: Start isEmpty. Operand 3215 states and 5845 transitions. [2018-11-07 06:59:41,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-11-07 06:59:41,888 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:59:41,888 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:59:41,889 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:59:41,889 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:59:41,889 INFO L82 PathProgramCache]: Analyzing trace with hash -1452383789, now seen corresponding path program 1 times [2018-11-07 06:59:41,890 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:59:41,891 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:59:41,891 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:59:41,891 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:59:41,891 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:59:41,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:59:42,268 WARN L179 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 06:59:42,650 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 06:59:42,651 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 06:59:42,651 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 06:59:42,651 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 06:59:42,654 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 06:59:42,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 06:59:42,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 06:59:42,655 INFO L87 Difference]: Start difference. First operand 3215 states and 5845 transitions. Second operand 6 states. [2018-11-07 07:00:06,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 07:00:06,641 INFO L93 Difference]: Finished difference Result 9331 states and 16910 transitions. [2018-11-07 07:00:06,652 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 07:00:06,652 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 100 [2018-11-07 07:00:06,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 07:00:06,688 INFO L225 Difference]: With dead ends: 9331 [2018-11-07 07:00:06,688 INFO L226 Difference]: Without dead ends: 6122 [2018-11-07 07:00:06,700 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 07:00:06,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6122 states. [2018-11-07 07:00:06,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6122 to 6084. [2018-11-07 07:00:06,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6084 states. [2018-11-07 07:00:06,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6084 states to 6084 states and 9616 transitions. [2018-11-07 07:00:06,868 INFO L78 Accepts]: Start accepts. Automaton has 6084 states and 9616 transitions. Word has length 100 [2018-11-07 07:00:06,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 07:00:06,870 INFO L480 AbstractCegarLoop]: Abstraction has 6084 states and 9616 transitions. [2018-11-07 07:00:06,870 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 07:00:06,870 INFO L276 IsEmpty]: Start isEmpty. Operand 6084 states and 9616 transitions. [2018-11-07 07:00:06,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-11-07 07:00:06,884 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 07:00:06,885 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:00:06,885 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 07:00:06,885 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:00:06,885 INFO L82 PathProgramCache]: Analyzing trace with hash 299475857, now seen corresponding path program 1 times [2018-11-07 07:00:06,886 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 07:00:06,887 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:00:06,887 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:00:06,887 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:00:06,887 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 07:00:06,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:00:07,385 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 07:00:07,385 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 07:00:07,386 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 07:00:07,386 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 07:00:07,387 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 07:00:07,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 07:00:07,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-07 07:00:07,387 INFO L87 Difference]: Start difference. First operand 6084 states and 9616 transitions. Second operand 6 states. [2018-11-07 07:00:35,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 07:00:35,816 INFO L93 Difference]: Finished difference Result 24224 states and 39667 transitions. [2018-11-07 07:00:35,821 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-07 07:00:35,821 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 118 [2018-11-07 07:00:35,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 07:00:35,911 INFO L225 Difference]: With dead ends: 24224 [2018-11-07 07:00:35,911 INFO L226 Difference]: Without dead ends: 18146 [2018-11-07 07:00:35,948 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-11-07 07:00:35,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18146 states. [2018-11-07 07:00:36,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18146 to 18069. [2018-11-07 07:00:36,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18069 states. [2018-11-07 07:00:36,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18069 states to 18069 states and 25591 transitions. [2018-11-07 07:00:36,432 INFO L78 Accepts]: Start accepts. Automaton has 18069 states and 25591 transitions. Word has length 118 [2018-11-07 07:00:36,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 07:00:36,433 INFO L480 AbstractCegarLoop]: Abstraction has 18069 states and 25591 transitions. [2018-11-07 07:00:36,433 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 07:00:36,433 INFO L276 IsEmpty]: Start isEmpty. Operand 18069 states and 25591 transitions. [2018-11-07 07:00:36,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2018-11-07 07:00:36,444 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 07:00:36,444 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:00:36,445 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 07:00:36,445 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:00:36,445 INFO L82 PathProgramCache]: Analyzing trace with hash -483353840, now seen corresponding path program 1 times [2018-11-07 07:00:36,445 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 07:00:36,446 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:00:36,446 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:00:36,446 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:00:36,446 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 07:00:36,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:00:36,855 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 07:00:36,857 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 07:00:36,857 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 07:00:36,857 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 07:00:36,858 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 07:00:36,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 07:00:36,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 07:00:36,858 INFO L87 Difference]: Start difference. First operand 18069 states and 25591 transitions. Second operand 5 states. [2018-11-07 07:00:53,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 07:00:53,287 INFO L93 Difference]: Finished difference Result 56172 states and 84573 transitions. [2018-11-07 07:00:53,287 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 07:00:53,287 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 163 [2018-11-07 07:00:53,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 07:00:53,440 INFO L225 Difference]: With dead ends: 56172 [2018-11-07 07:00:53,440 INFO L226 Difference]: Without dead ends: 38109 [2018-11-07 07:00:53,499 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 07:00:53,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38109 states. [2018-11-07 07:00:54,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38109 to 37029. [2018-11-07 07:00:54,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37029 states. [2018-11-07 07:00:54,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37029 states to 37029 states and 50030 transitions. [2018-11-07 07:00:54,367 INFO L78 Accepts]: Start accepts. Automaton has 37029 states and 50030 transitions. Word has length 163 [2018-11-07 07:00:54,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 07:00:54,367 INFO L480 AbstractCegarLoop]: Abstraction has 37029 states and 50030 transitions. [2018-11-07 07:00:54,368 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 07:00:54,368 INFO L276 IsEmpty]: Start isEmpty. Operand 37029 states and 50030 transitions. [2018-11-07 07:00:54,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2018-11-07 07:00:54,373 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 07:00:54,373 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 07:00:54,374 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 07:00:54,374 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:00:54,374 INFO L82 PathProgramCache]: Analyzing trace with hash -1157490002, now seen corresponding path program 1 times [2018-11-07 07:00:54,374 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 07:00:54,375 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:00:54,375 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:00:54,376 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:00:54,376 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 07:00:54,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:00:54,889 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 42 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 07:00:54,889 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 07:00:54,889 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 07:00:54,890 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 184 with the following transitions: [2018-11-07 07:00:54,893 INFO L202 CegarAbsIntRunner]: [0], [1], [5227], [5234], [5242], [5250], [5258], [5266], [5274], [5282], [5290], [5298], [5306], [5314], [5322], [5330], [5338], [5346], [5350], [5352], [5355], [5363], [5371], [5379], [5387], [5395], [5403], [5411], [5419], [5427], [5435], [5443], [5451], [5459], [5467], [5475], [5483], [5491], [5499], [5507], [5515], [5523], [5531], [5539], [5547], [5555], [5563], [5571], [5579], [5587], [5595], [5603], [5611], [5619], [5627], [5635], [5643], [5651], [5659], [5667], [5675], [5683], [5691], [5699], [5707], [5715], [5727], [5731], [5742], [5745], [5746], [5750], [5754], [5758], [5762], [5766], [5770], [5774], [5778], [5781], [6802], [6806], [6810], [6816], [6820], [6822], [6837], [6838], [6839], [6841], [6842] [2018-11-07 07:00:54,944 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 07:00:54,945 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 07:00:55,412 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 07:00:55,414 INFO L272 AbstractInterpreter]: Visited 87 different actions 87 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-11-07 07:00:55,449 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:00:55,450 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 07:00:55,874 INFO L227 lantSequenceWeakener]: Weakened 174 states. On average, predicates are now at 75.19% of their original sizes. [2018-11-07 07:00:55,875 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 07:00:56,116 INFO L415 sIntCurrentIteration]: We unified 182 AI predicates to 182 [2018-11-07 07:00:56,116 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 07:00:56,117 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 07:00:56,117 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2018-11-07 07:00:56,117 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 07:00:56,120 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 07:00:56,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 07:00:56,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 07:00:56,120 INFO L87 Difference]: Start difference. First operand 37029 states and 50030 transitions. Second operand 6 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown