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.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label12_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 01:26:00,845 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 01:26:00,848 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 01:26:00,866 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 01:26:00,866 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 01:26:00,867 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 01:26:00,869 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 01:26:00,871 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 01:26:00,872 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 01:26:00,873 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 01:26:00,874 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 01:26:00,874 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 01:26:00,875 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 01:26:00,876 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 01:26:00,878 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 01:26:00,878 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 01:26:00,879 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 01:26:00,881 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 01:26:00,886 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 01:26:00,888 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 01:26:00,890 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 01:26:00,892 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 01:26:00,896 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 01:26:00,896 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 01:26:00,898 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 01:26:00,899 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 01:26:00,901 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 01:26:00,902 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 01:26:00,902 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 01:26:00,907 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 01:26:00,907 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 01:26:00,908 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 01:26:00,908 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 01:26:00,909 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 01:26:00,910 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 01:26:00,911 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 01:26:00,911 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-11-07 01:26:00,944 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 01:26:00,945 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 01:26:00,946 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 01:26:00,946 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 01:26:00,946 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 01:26:00,946 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 01:26:00,947 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 01:26:00,947 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 01:26:00,947 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 01:26:00,947 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 01:26:00,947 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 01:26:00,948 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 01:26:00,948 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 01:26:00,949 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 01:26:00,949 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 01:26:00,949 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 01:26:00,949 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 01:26:00,949 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 01:26:00,950 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 01:26:00,950 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 01:26:00,950 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 01:26:00,950 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 01:26:00,951 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 01:26:00,951 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 01:26:00,951 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 01:26:00,951 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 01:26:00,951 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 01:26:00,952 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 01:26:00,952 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 01:26:00,952 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 01:26:00,952 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 01:26:00,953 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 01:26:00,953 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 01:26:00,953 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 01:26:01,017 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 01:26:01,031 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 01:26:01,035 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 01:26:01,037 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 01:26:01,038 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 01:26:01,038 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label12_true-unreach-call.c [2018-11-07 01:26:01,108 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a2dcb261/bf8e1f228a3945fa9d7f0686d794b6d5/FLAG74fb12950 [2018-11-07 01:26:01,861 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 01:26:01,862 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label12_true-unreach-call.c [2018-11-07 01:26:01,886 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a2dcb261/bf8e1f228a3945fa9d7f0686d794b6d5/FLAG74fb12950 [2018-11-07 01:26:01,907 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a2dcb261/bf8e1f228a3945fa9d7f0686d794b6d5 [2018-11-07 01:26:01,920 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 01:26:01,923 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 01:26:01,924 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 01:26:01,924 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 01:26:01,930 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 01:26:01,931 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:26:01" (1/1) ... [2018-11-07 01:26:01,934 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4688d22a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:26:01, skipping insertion in model container [2018-11-07 01:26:01,935 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:26:01" (1/1) ... [2018-11-07 01:26:01,948 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 01:26:02,068 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 01:26:02,896 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 01:26:02,902 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 01:26:03,159 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 01:26:03,189 INFO L193 MainTranslator]: Completed translation [2018-11-07 01:26:03,190 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:26:03 WrapperNode [2018-11-07 01:26:03,190 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 01:26:03,191 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 01:26:03,192 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 01:26:03,192 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 01:26:03,204 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:26:03" (1/1) ... [2018-11-07 01:26:03,402 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:26:03" (1/1) ... [2018-11-07 01:26:03,419 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 01:26:03,420 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 01:26:03,420 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 01:26:03,420 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 01:26:03,433 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:26:03" (1/1) ... [2018-11-07 01:26:03,434 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:26:03" (1/1) ... [2018-11-07 01:26:03,448 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:26:03" (1/1) ... [2018-11-07 01:26:03,448 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:26:03" (1/1) ... [2018-11-07 01:26:03,521 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:26:03" (1/1) ... [2018-11-07 01:26:03,539 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:26:03" (1/1) ... [2018-11-07 01:26:03,551 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:26:03" (1/1) ... [2018-11-07 01:26:03,572 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 01:26:03,573 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 01:26:03,573 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 01:26:03,573 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 01:26:03,586 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:26:03" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 01:26:03,675 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 01:26:03,675 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 01:26:03,676 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 01:26:03,676 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 01:26:03,676 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 01:26:03,676 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 01:26:03,676 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 01:26:03,677 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 01:26:03,677 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 01:26:08,653 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 01:26:08,659 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:26:08 BoogieIcfgContainer [2018-11-07 01:26:08,659 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 01:26:08,661 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 01:26:08,661 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 01:26:08,666 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 01:26:08,667 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:26:01" (1/3) ... [2018-11-07 01:26:08,668 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34047870 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:26:08, skipping insertion in model container [2018-11-07 01:26:08,668 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:26:03" (2/3) ... [2018-11-07 01:26:08,669 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34047870 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:26:08, skipping insertion in model container [2018-11-07 01:26:08,669 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:26:08" (3/3) ... [2018-11-07 01:26:08,674 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label12_true-unreach-call.c [2018-11-07 01:26:08,688 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 01:26:08,705 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 01:26:08,726 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 01:26:08,773 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 01:26:08,773 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 01:26:08,774 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 01:26:08,774 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 01:26:08,774 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 01:26:08,774 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 01:26:08,774 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 01:26:08,775 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 01:26:08,819 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2018-11-07 01:26:08,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-11-07 01:26:08,838 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 01:26:08,840 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] [2018-11-07 01:26:08,843 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 01:26:08,849 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 01:26:08,849 INFO L82 PathProgramCache]: Analyzing trace with hash -927745007, now seen corresponding path program 1 times [2018-11-07 01:26:08,852 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 01:26:08,904 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:26:08,904 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 01:26:08,904 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:26:08,905 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 01:26:09,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 01:26:09,985 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 01:26:09,988 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 01:26:09,989 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 01:26:09,989 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 01:26:09,998 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 01:26:10,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 01:26:10,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 01:26:10,023 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 3 states. [2018-11-07 01:26:12,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 01:26:12,248 INFO L93 Difference]: Finished difference Result 845 states and 1487 transitions. [2018-11-07 01:26:12,250 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 01:26:12,252 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 170 [2018-11-07 01:26:12,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 01:26:12,280 INFO L225 Difference]: With dead ends: 845 [2018-11-07 01:26:12,280 INFO L226 Difference]: Without dead ends: 531 [2018-11-07 01:26:12,289 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 01:26:12,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2018-11-07 01:26:12,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 530. [2018-11-07 01:26:12,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 530 states. [2018-11-07 01:26:12,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 869 transitions. [2018-11-07 01:26:12,425 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 869 transitions. Word has length 170 [2018-11-07 01:26:12,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 01:26:12,427 INFO L480 AbstractCegarLoop]: Abstraction has 530 states and 869 transitions. [2018-11-07 01:26:12,427 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 01:26:12,427 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 869 transitions. [2018-11-07 01:26:12,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2018-11-07 01:26:12,435 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 01:26:12,436 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] [2018-11-07 01:26:12,436 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 01:26:12,437 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 01:26:12,437 INFO L82 PathProgramCache]: Analyzing trace with hash 1807947448, now seen corresponding path program 1 times [2018-11-07 01:26:12,437 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 01:26:12,439 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:26:12,439 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 01:26:12,439 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:26:12,440 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 01:26:12,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 01:26:12,802 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 01:26:12,803 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 01:26:12,803 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 01:26:12,803 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 01:26:12,805 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 01:26:12,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 01:26:12,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 01:26:12,806 INFO L87 Difference]: Start difference. First operand 530 states and 869 transitions. Second operand 6 states. [2018-11-07 01:26:16,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 01:26:16,885 INFO L93 Difference]: Finished difference Result 1599 states and 2688 transitions. [2018-11-07 01:26:16,886 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-07 01:26:16,886 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 180 [2018-11-07 01:26:16,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 01:26:16,900 INFO L225 Difference]: With dead ends: 1599 [2018-11-07 01:26:16,900 INFO L226 Difference]: Without dead ends: 1075 [2018-11-07 01:26:16,904 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 01:26:16,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1075 states. [2018-11-07 01:26:16,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1075 to 1034. [2018-11-07 01:26:16,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1034 states. [2018-11-07 01:26:16,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1034 states to 1034 states and 1689 transitions. [2018-11-07 01:26:16,967 INFO L78 Accepts]: Start accepts. Automaton has 1034 states and 1689 transitions. Word has length 180 [2018-11-07 01:26:16,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 01:26:16,968 INFO L480 AbstractCegarLoop]: Abstraction has 1034 states and 1689 transitions. [2018-11-07 01:26:16,968 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 01:26:16,968 INFO L276 IsEmpty]: Start isEmpty. Operand 1034 states and 1689 transitions. [2018-11-07 01:26:16,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2018-11-07 01:26:16,974 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 01:26:16,974 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 01:26:16,974 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 01:26:16,975 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 01:26:16,975 INFO L82 PathProgramCache]: Analyzing trace with hash 479453333, now seen corresponding path program 1 times [2018-11-07 01:26:16,975 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 01:26:16,976 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:26:16,976 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 01:26:16,977 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:26:16,977 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 01:26:17,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 01:26:17,306 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 01:26:17,307 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 01:26:17,307 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 01:26:17,307 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 01:26:17,308 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 01:26:17,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 01:26:17,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 01:26:17,309 INFO L87 Difference]: Start difference. First operand 1034 states and 1689 transitions. Second operand 3 states. [2018-11-07 01:26:19,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 01:26:19,921 INFO L93 Difference]: Finished difference Result 2912 states and 4936 transitions. [2018-11-07 01:26:19,931 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 01:26:19,931 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 183 [2018-11-07 01:26:19,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 01:26:19,956 INFO L225 Difference]: With dead ends: 2912 [2018-11-07 01:26:19,956 INFO L226 Difference]: Without dead ends: 1884 [2018-11-07 01:26:19,965 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 01:26:19,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1884 states. [2018-11-07 01:26:20,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1884 to 1881. [2018-11-07 01:26:20,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1881 states. [2018-11-07 01:26:20,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1881 states to 1881 states and 2981 transitions. [2018-11-07 01:26:20,064 INFO L78 Accepts]: Start accepts. Automaton has 1881 states and 2981 transitions. Word has length 183 [2018-11-07 01:26:20,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 01:26:20,065 INFO L480 AbstractCegarLoop]: Abstraction has 1881 states and 2981 transitions. [2018-11-07 01:26:20,065 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 01:26:20,067 INFO L276 IsEmpty]: Start isEmpty. Operand 1881 states and 2981 transitions. [2018-11-07 01:26:20,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2018-11-07 01:26:20,075 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 01:26:20,075 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 01:26:20,076 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 01:26:20,076 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 01:26:20,076 INFO L82 PathProgramCache]: Analyzing trace with hash 1957803305, now seen corresponding path program 1 times [2018-11-07 01:26:20,076 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 01:26:20,077 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:26:20,077 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 01:26:20,078 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:26:20,078 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 01:26:20,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 01:26:20,475 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 01:26:20,476 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 01:26:20,476 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-07 01:26:20,476 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 01:26:20,477 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 01:26:20,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 01:26:20,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 01:26:20,478 INFO L87 Difference]: Start difference. First operand 1881 states and 2981 transitions. Second operand 7 states. [2018-11-07 01:26:22,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 01:26:22,907 INFO L93 Difference]: Finished difference Result 5729 states and 9791 transitions. [2018-11-07 01:26:22,910 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 01:26:22,910 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 189 [2018-11-07 01:26:22,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 01:26:22,943 INFO L225 Difference]: With dead ends: 5729 [2018-11-07 01:26:22,944 INFO L226 Difference]: Without dead ends: 3854 [2018-11-07 01:26:22,952 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2018-11-07 01:26:22,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3854 states. [2018-11-07 01:26:23,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3854 to 3744. [2018-11-07 01:26:23,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3744 states. [2018-11-07 01:26:23,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3744 states to 3744 states and 6108 transitions. [2018-11-07 01:26:23,120 INFO L78 Accepts]: Start accepts. Automaton has 3744 states and 6108 transitions. Word has length 189 [2018-11-07 01:26:23,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 01:26:23,120 INFO L480 AbstractCegarLoop]: Abstraction has 3744 states and 6108 transitions. [2018-11-07 01:26:23,120 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 01:26:23,121 INFO L276 IsEmpty]: Start isEmpty. Operand 3744 states and 6108 transitions. [2018-11-07 01:26:23,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2018-11-07 01:26:23,133 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 01:26:23,134 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 01:26:23,134 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 01:26:23,135 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 01:26:23,135 INFO L82 PathProgramCache]: Analyzing trace with hash -551348028, now seen corresponding path program 1 times [2018-11-07 01:26:23,135 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 01:26:23,136 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:26:23,136 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 01:26:23,136 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:26:23,136 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 01:26:23,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 01:26:23,406 WARN L179 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 01:26:23,790 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 01:26:23,791 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 01:26:23,791 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 01:26:23,791 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 01:26:23,792 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 01:26:23,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 01:26:23,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 01:26:23,793 INFO L87 Difference]: Start difference. First operand 3744 states and 6108 transitions. Second operand 6 states. [2018-11-07 01:26:26,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 01:26:26,112 INFO L93 Difference]: Finished difference Result 8125 states and 13602 transitions. [2018-11-07 01:26:26,113 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 01:26:26,113 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 190 [2018-11-07 01:26:26,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 01:26:26,139 INFO L225 Difference]: With dead ends: 8125 [2018-11-07 01:26:26,139 INFO L226 Difference]: Without dead ends: 4387 [2018-11-07 01:26:26,157 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 01:26:26,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4387 states. [2018-11-07 01:26:26,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4387 to 4215. [2018-11-07 01:26:26,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4215 states. [2018-11-07 01:26:26,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4215 states to 4215 states and 6296 transitions. [2018-11-07 01:26:26,303 INFO L78 Accepts]: Start accepts. Automaton has 4215 states and 6296 transitions. Word has length 190 [2018-11-07 01:26:26,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 01:26:26,303 INFO L480 AbstractCegarLoop]: Abstraction has 4215 states and 6296 transitions. [2018-11-07 01:26:26,303 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 01:26:26,303 INFO L276 IsEmpty]: Start isEmpty. Operand 4215 states and 6296 transitions. [2018-11-07 01:26:26,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2018-11-07 01:26:26,316 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 01:26:26,317 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 01:26:26,317 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 01:26:26,317 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 01:26:26,318 INFO L82 PathProgramCache]: Analyzing trace with hash -1721729602, now seen corresponding path program 1 times [2018-11-07 01:26:26,318 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 01:26:26,319 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:26:26,319 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 01:26:26,319 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:26:26,320 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 01:26:26,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 01:26:26,582 WARN L179 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 01:26:26,754 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 23 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 01:26:26,755 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 01:26:26,755 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 01:26:26,756 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 195 with the following transitions: [2018-11-07 01:26:26,759 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [10], [12], [13], [17], [21], [25], [28], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [821], [823], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 01:26:26,866 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 01:26:26,866 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... [2018-11-07 01:30:35,302 WARN L572 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-11-07 01:30:35,303 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-11-07 01:30:35,304 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-07 01:30:35,304 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 01:30:35,304 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 01:30:35,314 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 01:30:35,315 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 01:30:35,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 01:30:35,526 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 01:30:35,558 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-11-07 01:30:35,760 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 01:30:35,760 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 01:30:35,766 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 01:30:35,766 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 01:30:35 BoogieIcfgContainer [2018-11-07 01:30:35,767 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 01:30:35,768 INFO L168 Benchmark]: Toolchain (without parser) took 273847.15 ms. Allocated memory was 1.5 GB in the beginning and 3.3 GB in the end (delta: 1.8 GB). Free memory was 1.4 GB in the beginning and 2.8 GB in the end (delta: -1.4 GB). Peak memory consumption was 414.4 MB. Max. memory is 7.1 GB. [2018-11-07 01:30:35,769 INFO L168 Benchmark]: CDTParser took 0.22 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 01:30:35,770 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1266.95 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 74.0 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. [2018-11-07 01:30:35,771 INFO L168 Benchmark]: Boogie Procedure Inliner took 228.05 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 725.6 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -840.9 MB). Peak memory consumption was 38.7 MB. Max. memory is 7.1 GB. [2018-11-07 01:30:35,772 INFO L168 Benchmark]: Boogie Preprocessor took 152.61 ms. Allocated memory is still 2.2 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 01:30:35,772 INFO L168 Benchmark]: RCFGBuilder took 5086.61 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 247.7 MB). Peak memory consumption was 247.7 MB. Max. memory is 7.1 GB. [2018-11-07 01:30:35,773 INFO L168 Benchmark]: TraceAbstraction took 267106.22 ms. Allocated memory was 2.2 GB in the beginning and 3.3 GB in the end (delta: 1.1 GB). Free memory was 1.9 GB in the beginning and 2.8 GB in the end (delta: -863.7 MB). Peak memory consumption was 208.0 MB. Max. memory is 7.1 GB. [2018-11-07 01:30:35,779 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1266.95 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 74.0 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 228.05 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 725.6 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -840.9 MB). Peak memory consumption was 38.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 152.61 ms. Allocated memory is still 2.2 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 5086.61 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 247.7 MB). Peak memory consumption was 247.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 267106.22 ms. Allocated memory was 2.2 GB in the beginning and 3.3 GB in the end (delta: 1.1 GB). Free memory was 1.9 GB in the beginning and 2.8 GB in the end (delta: -863.7 MB). Peak memory consumption was 208.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 1524]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 1524). Cancelled while BasicCegarLoop was analyzing trace of length 195 with TraceHistMax 3,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 5 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 312 locations, 1 error locations. TIMEOUT Result, 267.0s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 13.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1147 SDtfs, 3898 SDslu, 847 SDs, 0 SdLazy, 5527 SolverSat, 770 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 11.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 39 GetRequests, 11 SyntacticMatches, 5 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4215occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 248.5s AbstIntTime, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 5 MinimizatonAttempts, 327 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 912 NumberOfCodeBlocks, 912 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 907 ConstructedInterpolants, 0 QuantifiedInterpolants, 367814 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 50/50 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown