java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem19_label59_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 18:37:22,791 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 18:37:22,793 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 18:37:22,812 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 18:37:22,813 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 18:37:22,814 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 18:37:22,816 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 18:37:22,819 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 18:37:22,821 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 18:37:22,822 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 18:37:22,823 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 18:37:22,824 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 18:37:22,825 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 18:37:22,826 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 18:37:22,827 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 18:37:22,828 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 18:37:22,828 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 18:37:22,831 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 18:37:22,833 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 18:37:22,834 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 18:37:22,836 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 18:37:22,837 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 18:37:22,842 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 18:37:22,842 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 18:37:22,843 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 18:37:22,845 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 18:37:22,847 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 18:37:22,848 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 18:37:22,849 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 18:37:22,850 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 18:37:22,850 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 18:37:22,852 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 18:37:22,853 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 18:37:22,853 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 18:37:22,854 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 18:37:22,855 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 18:37:22,856 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf [2018-11-07 18:37:22,882 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 18:37:22,884 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 18:37:22,885 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 18:37:22,885 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 18:37:22,886 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 18:37:22,886 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 18:37:22,886 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-07 18:37:22,886 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 18:37:22,886 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 18:37:22,887 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 18:37:22,887 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 18:37:22,887 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 18:37:22,887 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 18:37:22,888 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 18:37:22,888 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 18:37:22,888 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 18:37:22,889 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 18:37:22,889 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 18:37:22,889 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 18:37:22,889 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 18:37:22,889 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 18:37:22,890 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 18:37:22,890 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 18:37:22,890 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 18:37:22,890 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 18:37:22,891 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 18:37:22,891 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 18:37:22,891 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 18:37:22,891 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 18:37:22,891 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 18:37:22,892 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 18:37:22,892 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 18:37:22,892 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 18:37:22,892 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 18:37:22,892 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 18:37:22,955 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 18:37:22,969 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 18:37:22,973 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 18:37:22,975 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 18:37:22,975 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 18:37:22,976 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label59_false-unreach-call.c [2018-11-07 18:37:23,041 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a507383b4/a109adbc612440f7b617a2be63e5964e/FLAGc52984811 [2018-11-07 18:37:23,921 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 18:37:23,922 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label59_false-unreach-call.c [2018-11-07 18:37:23,978 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a507383b4/a109adbc612440f7b617a2be63e5964e/FLAGc52984811 [2018-11-07 18:37:24,001 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a507383b4/a109adbc612440f7b617a2be63e5964e [2018-11-07 18:37:24,017 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 18:37:24,020 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 18:37:24,021 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 18:37:24,021 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 18:37:24,028 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 18:37:24,030 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:37:24" (1/1) ... [2018-11-07 18:37:24,033 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37fc086b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:37:24, skipping insertion in model container [2018-11-07 18:37:24,034 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:37:24" (1/1) ... [2018-11-07 18:37:24,046 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 18:37:24,283 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 18:37:26,246 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 18:37:26,252 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 18:37:27,400 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 18:37:27,461 INFO L193 MainTranslator]: Completed translation [2018-11-07 18:37:27,462 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:37:27 WrapperNode [2018-11-07 18:37:27,462 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 18:37:27,464 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 18:37:27,464 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 18:37:27,464 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 18:37:27,474 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:37:27" (1/1) ... [2018-11-07 18:37:27,982 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:37:27" (1/1) ... [2018-11-07 18:37:27,992 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 18:37:27,992 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 18:37:27,993 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 18:37:27,993 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 18:37:28,004 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:37:27" (1/1) ... [2018-11-07 18:37:28,004 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:37:27" (1/1) ... [2018-11-07 18:37:28,067 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:37:27" (1/1) ... [2018-11-07 18:37:28,068 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:37:27" (1/1) ... [2018-11-07 18:37:28,224 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:37:27" (1/1) ... [2018-11-07 18:37:28,277 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:37:27" (1/1) ... [2018-11-07 18:37:28,333 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:37:27" (1/1) ... [2018-11-07 18:37:28,389 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 18:37:28,390 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 18:37:28,390 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 18:37:28,390 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 18:37:28,391 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:37:27" (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 18:37:28,458 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 18:37:28,459 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 18:37:28,460 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 18:37:28,460 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2018-11-07 18:37:28,460 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2018-11-07 18:37:28,460 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2018-11-07 18:37:28,460 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2018-11-07 18:37:28,460 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-07 18:37:28,461 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-07 18:37:28,461 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 18:37:28,461 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 18:37:28,461 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 18:37:28,461 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 18:37:28,462 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 18:37:28,462 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 18:37:28,462 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 18:37:28,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 18:37:28,463 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 18:37:28,463 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 18:37:44,034 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 18:37:44,034 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:37:44 BoogieIcfgContainer [2018-11-07 18:37:44,035 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 18:37:44,036 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 18:37:44,036 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 18:37:44,040 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 18:37:44,040 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 06:37:24" (1/3) ... [2018-11-07 18:37:44,041 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ec0004f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:37:44, skipping insertion in model container [2018-11-07 18:37:44,041 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:37:27" (2/3) ... [2018-11-07 18:37:44,042 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ec0004f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:37:44, skipping insertion in model container [2018-11-07 18:37:44,042 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:37:44" (3/3) ... [2018-11-07 18:37:44,044 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label59_false-unreach-call.c [2018-11-07 18:37:44,055 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 18:37:44,066 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 18:37:44,083 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 18:37:44,151 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 18:37:44,151 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 18:37:44,152 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 18:37:44,152 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 18:37:44,152 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 18:37:44,152 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 18:37:44,152 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 18:37:44,152 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 18:37:44,218 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states. [2018-11-07 18:37:44,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-11-07 18:37:44,226 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:37:44,228 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] [2018-11-07 18:37:44,231 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:37:44,236 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:37:44,236 INFO L82 PathProgramCache]: Analyzing trace with hash -1224049076, now seen corresponding path program 1 times [2018-11-07 18:37:44,238 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:37:44,291 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:37:44,291 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:37:44,291 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:37:44,292 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:37:44,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:37:44,745 WARN L179 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 18:37:44,870 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 18:37:44,873 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 18:37:44,873 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 18:37:44,874 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:37:44,879 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 18:37:44,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 18:37:44,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 18:37:44,898 INFO L87 Difference]: Start difference. First operand 1778 states. Second operand 3 states. [2018-11-07 18:37:58,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:37:58,171 INFO L93 Difference]: Finished difference Result 5049 states and 9513 transitions. [2018-11-07 18:37:58,173 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 18:37:58,174 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 32 [2018-11-07 18:37:58,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:37:58,225 INFO L225 Difference]: With dead ends: 5049 [2018-11-07 18:37:58,225 INFO L226 Difference]: Without dead ends: 3269 [2018-11-07 18:37:58,239 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 18:37:58,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3269 states. [2018-11-07 18:37:58,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3269 to 3218. [2018-11-07 18:37:58,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3218 states. [2018-11-07 18:37:58,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3218 states to 3218 states and 5997 transitions. [2018-11-07 18:37:58,456 INFO L78 Accepts]: Start accepts. Automaton has 3218 states and 5997 transitions. Word has length 32 [2018-11-07 18:37:58,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:37:58,457 INFO L480 AbstractCegarLoop]: Abstraction has 3218 states and 5997 transitions. [2018-11-07 18:37:58,457 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 18:37:58,457 INFO L276 IsEmpty]: Start isEmpty. Operand 3218 states and 5997 transitions. [2018-11-07 18:37:58,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-11-07 18:37:58,464 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:37:58,465 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:37:58,465 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:37:58,465 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:37:58,466 INFO L82 PathProgramCache]: Analyzing trace with hash -54041823, now seen corresponding path program 1 times [2018-11-07 18:37:58,467 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:37:58,469 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:37:58,469 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:37:58,469 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:37:58,469 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:37:58,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:37:58,873 WARN L179 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 18:37:59,285 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 18:37:59,285 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 18:37:59,286 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 18:37:59,286 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:37:59,288 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 18:37:59,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 18:37:59,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 18:37:59,289 INFO L87 Difference]: Start difference. First operand 3218 states and 5997 transitions. Second operand 6 states. [2018-11-07 18:38:23,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:38:23,750 INFO L93 Difference]: Finished difference Result 12137 states and 23144 transitions. [2018-11-07 18:38:23,751 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 18:38:23,751 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 104 [2018-11-07 18:38:23,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:38:23,813 INFO L225 Difference]: With dead ends: 12137 [2018-11-07 18:38:23,813 INFO L226 Difference]: Without dead ends: 8925 [2018-11-07 18:38:23,828 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 18:38:23,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8925 states. [2018-11-07 18:38:24,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8925 to 8862. [2018-11-07 18:38:24,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8862 states. [2018-11-07 18:38:24,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8862 states to 8862 states and 14404 transitions. [2018-11-07 18:38:24,086 INFO L78 Accepts]: Start accepts. Automaton has 8862 states and 14404 transitions. Word has length 104 [2018-11-07 18:38:24,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:38:24,087 INFO L480 AbstractCegarLoop]: Abstraction has 8862 states and 14404 transitions. [2018-11-07 18:38:24,087 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 18:38:24,087 INFO L276 IsEmpty]: Start isEmpty. Operand 8862 states and 14404 transitions. [2018-11-07 18:38:24,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-11-07 18:38:24,095 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:38:24,095 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:38:24,097 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:38:24,097 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:38:24,097 INFO L82 PathProgramCache]: Analyzing trace with hash 1938657519, now seen corresponding path program 1 times [2018-11-07 18:38:24,097 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:38:24,098 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:38:24,099 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:38:24,104 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:38:24,104 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:38:24,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:38:24,437 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 18:38:24,437 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 18:38:24,440 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 18:38:24,441 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:38:24,441 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 18:38:24,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 18:38:24,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 18:38:24,449 INFO L87 Difference]: Start difference. First operand 8862 states and 14404 transitions. Second operand 5 states. [2018-11-07 18:38:50,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:38:50,012 INFO L93 Difference]: Finished difference Result 32216 states and 52827 transitions. [2018-11-07 18:38:50,012 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 18:38:50,012 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 106 [2018-11-07 18:38:50,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:38:50,099 INFO L225 Difference]: With dead ends: 32216 [2018-11-07 18:38:50,100 INFO L226 Difference]: Without dead ends: 23360 [2018-11-07 18:38:50,138 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 18:38:50,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23360 states. [2018-11-07 18:38:50,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23360 to 23170. [2018-11-07 18:38:50,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23170 states. [2018-11-07 18:38:50,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23170 states to 23170 states and 32133 transitions. [2018-11-07 18:38:50,731 INFO L78 Accepts]: Start accepts. Automaton has 23170 states and 32133 transitions. Word has length 106 [2018-11-07 18:38:50,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:38:50,732 INFO L480 AbstractCegarLoop]: Abstraction has 23170 states and 32133 transitions. [2018-11-07 18:38:50,732 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 18:38:50,732 INFO L276 IsEmpty]: Start isEmpty. Operand 23170 states and 32133 transitions. [2018-11-07 18:38:50,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2018-11-07 18:38:50,735 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:38:50,736 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:38:50,736 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:38:50,736 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:38:50,736 INFO L82 PathProgramCache]: Analyzing trace with hash -1852913499, now seen corresponding path program 1 times [2018-11-07 18:38:50,737 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:38:50,737 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:38:50,738 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:38:50,738 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:38:50,738 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:38:50,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:38:50,990 WARN L179 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 18:38:51,366 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 18:38:51,367 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 18:38:51,367 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 18:38:51,367 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:38:51,368 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 18:38:51,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 18:38:51,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 18:38:51,369 INFO L87 Difference]: Start difference. First operand 23170 states and 32133 transitions. Second operand 6 states. [2018-11-07 18:39:04,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:39:04,869 INFO L93 Difference]: Finished difference Result 52759 states and 75825 transitions. [2018-11-07 18:39:04,870 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 18:39:04,870 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 111 [2018-11-07 18:39:04,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:39:04,987 INFO L225 Difference]: With dead ends: 52759 [2018-11-07 18:39:04,987 INFO L226 Difference]: Without dead ends: 29595 [2018-11-07 18:39:05,041 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 18:39:05,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29595 states. [2018-11-07 18:39:05,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29595 to 29359. [2018-11-07 18:39:05,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29359 states. [2018-11-07 18:39:05,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29359 states to 29359 states and 40703 transitions. [2018-11-07 18:39:05,748 INFO L78 Accepts]: Start accepts. Automaton has 29359 states and 40703 transitions. Word has length 111 [2018-11-07 18:39:05,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:39:05,749 INFO L480 AbstractCegarLoop]: Abstraction has 29359 states and 40703 transitions. [2018-11-07 18:39:05,749 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 18:39:05,749 INFO L276 IsEmpty]: Start isEmpty. Operand 29359 states and 40703 transitions. [2018-11-07 18:39:05,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2018-11-07 18:39:05,754 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:39:05,754 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:39:05,754 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:39:05,754 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:39:05,756 INFO L82 PathProgramCache]: Analyzing trace with hash 1811621932, now seen corresponding path program 1 times [2018-11-07 18:39:05,756 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:39:05,757 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:39:05,757 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:39:05,758 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:39:05,760 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:39:05,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:39:06,181 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 18:39:06,181 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 18:39:06,181 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 18:39:06,181 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:39:06,182 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 18:39:06,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 18:39:06,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 18:39:06,183 INFO L87 Difference]: Start difference. First operand 29359 states and 40703 transitions. Second operand 5 states. [2018-11-07 18:39:22,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:39:22,794 INFO L93 Difference]: Finished difference Result 88269 states and 129129 transitions. [2018-11-07 18:39:22,799 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 18:39:22,799 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 161 [2018-11-07 18:39:22,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:39:22,982 INFO L225 Difference]: With dead ends: 88269 [2018-11-07 18:39:22,983 INFO L226 Difference]: Without dead ends: 58916 [2018-11-07 18:39:23,053 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 18:39:23,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58916 states. [2018-11-07 18:39:24,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58916 to 57676. [2018-11-07 18:39:24,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57676 states. [2018-11-07 18:39:24,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57676 states to 57676 states and 76226 transitions. [2018-11-07 18:39:24,602 INFO L78 Accepts]: Start accepts. Automaton has 57676 states and 76226 transitions. Word has length 161 [2018-11-07 18:39:24,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:39:24,602 INFO L480 AbstractCegarLoop]: Abstraction has 57676 states and 76226 transitions. [2018-11-07 18:39:24,602 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 18:39:24,603 INFO L276 IsEmpty]: Start isEmpty. Operand 57676 states and 76226 transitions. [2018-11-07 18:39:24,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2018-11-07 18:39:24,607 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:39:24,607 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:39:24,607 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:39:24,608 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:39:24,608 INFO L82 PathProgramCache]: Analyzing trace with hash 1275866513, now seen corresponding path program 1 times [2018-11-07 18:39:24,608 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:39:24,609 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:39:24,609 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:39:24,609 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:39:24,609 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:39:24,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:39:24,889 WARN L179 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 18:39:24,979 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 18:39:24,979 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 18:39:24,979 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 18:39:24,979 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:39:24,980 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 18:39:24,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 18:39:24,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 18:39:24,981 INFO L87 Difference]: Start difference. First operand 57676 states and 76226 transitions. Second operand 6 states. [2018-11-07 18:39:42,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:39:42,711 INFO L93 Difference]: Finished difference Result 144747 states and 199768 transitions. [2018-11-07 18:39:42,712 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 18:39:42,712 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 171 [2018-11-07 18:39:42,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:39:42,979 INFO L225 Difference]: With dead ends: 144747 [2018-11-07 18:39:42,980 INFO L226 Difference]: Without dead ends: 87077 [2018-11-07 18:39:43,098 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 18:39:43,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87077 states. [2018-11-07 18:39:44,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87077 to 86672. [2018-11-07 18:39:44,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86672 states. [2018-11-07 18:39:44,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86672 states to 86672 states and 111103 transitions. [2018-11-07 18:39:44,633 INFO L78 Accepts]: Start accepts. Automaton has 86672 states and 111103 transitions. Word has length 171 [2018-11-07 18:39:44,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:39:44,634 INFO L480 AbstractCegarLoop]: Abstraction has 86672 states and 111103 transitions. [2018-11-07 18:39:44,634 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 18:39:44,634 INFO L276 IsEmpty]: Start isEmpty. Operand 86672 states and 111103 transitions. [2018-11-07 18:39:44,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2018-11-07 18:39:44,640 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:39:44,640 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 18:39:44,641 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:39:44,641 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:39:44,641 INFO L82 PathProgramCache]: Analyzing trace with hash 1456435458, now seen corresponding path program 1 times [2018-11-07 18:39:44,641 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:39:44,642 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:39:44,642 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:39:44,643 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:39:44,643 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:39:44,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:39:45,744 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 50 proven. 69 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 18:39:45,744 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:39:45,745 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:39:45,746 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 198 with the following transitions: [2018-11-07 18:39:45,748 INFO L202 CegarAbsIntRunner]: [0], [1], [5227], [5234], [5242], [5250], [5258], [5266], [5274], [5282], [5290], [5298], [5306], [5314], [5322], [5330], [5338], [5346], [5354], [5362], [5370], [5378], [5382], [5384], [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], [5746], [5749], [5750], [5754], [5758], [5762], [5766], [5770], [5774], [5778], [5782], [5786], [5797], [5808], [5819], [5823], [5827], [5838], [5842], [5845], [6802], [6806], [6810], [6816], [6820], [6822], [6837], [6838], [6839], [6841], [6842] [2018-11-07 18:39:45,795 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:39:45,795 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:39:46,338 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 18:39:46,339 INFO L272 AbstractInterpreter]: Visited 96 different actions 96 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-11-07 18:39:46,382 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:39:46,382 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 18:39:46,877 INFO L227 lantSequenceWeakener]: Weakened 188 states. On average, predicates are now at 75.22% of their original sizes. [2018-11-07 18:39:46,878 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 18:39:47,192 INFO L415 sIntCurrentIteration]: We unified 196 AI predicates to 196 [2018-11-07 18:39:47,192 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 18:39:47,193 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 18:39:47,193 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-11-07 18:39:47,194 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:39:47,194 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 18:39:47,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 18:39:47,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 18:39:47,195 INFO L87 Difference]: Start difference. First operand 86672 states and 111103 transitions. Second operand 7 states. [2018-11-07 18:39:53,399 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 18:40:34,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:40:34,508 INFO L93 Difference]: Finished difference Result 174730 states and 223781 transitions. [2018-11-07 18:40:34,508 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 18:40:34,508 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 197 [2018-11-07 18:40:34,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:40:34,744 INFO L225 Difference]: With dead ends: 174730 [2018-11-07 18:40:34,745 INFO L226 Difference]: Without dead ends: 88064 [2018-11-07 18:40:34,880 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 197 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-11-07 18:40:34,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88064 states. [2018-11-07 18:40:35,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88064 to 88062. [2018-11-07 18:40:35,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88062 states. [2018-11-07 18:40:36,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88062 states to 88062 states and 112509 transitions. [2018-11-07 18:40:36,145 INFO L78 Accepts]: Start accepts. Automaton has 88062 states and 112509 transitions. Word has length 197 [2018-11-07 18:40:36,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:40:36,145 INFO L480 AbstractCegarLoop]: Abstraction has 88062 states and 112509 transitions. [2018-11-07 18:40:36,146 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 18:40:36,146 INFO L276 IsEmpty]: Start isEmpty. Operand 88062 states and 112509 transitions. [2018-11-07 18:40:36,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2018-11-07 18:40:36,149 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:40:36,150 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:40:36,150 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:40:36,150 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:40:36,151 INFO L82 PathProgramCache]: Analyzing trace with hash 1633351755, now seen corresponding path program 1 times [2018-11-07 18:40:36,151 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:40:36,152 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:40:36,153 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:40:36,153 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:40:36,153 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:40:36,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:40:36,493 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 18:40:36,494 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 18:40:36,494 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 18:40:36,494 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:40:36,495 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 18:40:36,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 18:40:36,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 18:40:36,496 INFO L87 Difference]: Start difference. First operand 88062 states and 112509 transitions. Second operand 3 states. [2018-11-07 18:40:46,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:40:46,340 INFO L93 Difference]: Finished difference Result 186375 states and 243844 transitions. [2018-11-07 18:40:46,340 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 18:40:46,341 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 272 [2018-11-07 18:40:46,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:40:47,801 INFO L225 Difference]: With dead ends: 186375 [2018-11-07 18:40:47,801 INFO L226 Difference]: Without dead ends: 99709 [2018-11-07 18:40:47,917 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 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 18:40:47,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99709 states. [2018-11-07 18:40:49,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99709 to 99669. [2018-11-07 18:40:49,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99669 states. [2018-11-07 18:40:49,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99669 states to 99669 states and 122989 transitions. [2018-11-07 18:40:49,234 INFO L78 Accepts]: Start accepts. Automaton has 99669 states and 122989 transitions. Word has length 272 [2018-11-07 18:40:49,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:40:49,235 INFO L480 AbstractCegarLoop]: Abstraction has 99669 states and 122989 transitions. [2018-11-07 18:40:49,235 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 18:40:49,235 INFO L276 IsEmpty]: Start isEmpty. Operand 99669 states and 122989 transitions. [2018-11-07 18:40:49,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 441 [2018-11-07 18:40:49,247 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:40:49,247 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:40:49,247 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:40:49,248 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:40:49,248 INFO L82 PathProgramCache]: Analyzing trace with hash -1061823371, now seen corresponding path program 1 times [2018-11-07 18:40:49,248 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:40:49,249 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:40:49,249 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:40:49,249 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:40:49,249 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:40:49,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:40:49,738 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 81 proven. 146 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2018-11-07 18:40:49,738 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:40:49,738 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:40:49,739 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 441 with the following transitions: [2018-11-07 18:40:49,740 INFO L202 CegarAbsIntRunner]: [0], [1], [5227], [5234], [5242], [5250], [5258], [5266], [5274], [5282], [5290], [5298], [5306], [5314], [5322], [5330], [5338], [5346], [5354], [5362], [5370], [5378], [5382], [5384], [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], [5746], [5750], [5754], [5758], [5761], [5762], [5766], [5770], [5774], [5778], [5782], [5786], [5797], [5808], [5819], [5823], [5827], [5838], [5842], [5845], [5846], [5850], [5854], [5858], [5862], [5866], [5870], [5874], [5878], [5882], [5886], [5890], [5894], [5898], [5902], [5906], [5910], [5914], [5918], [5922], [5926], [5930], [5934], [5938], [5942], [5946], [5950], [5954], [5958], [5962], [5966], [5977], [5981], [5985], [5996], [6000], [6004], [6008], [6012], [6016], [6020], [6024], [6028], [6032], [6036], [6040], [6051], [6055], [6059], [6063], [6067], [6071], [6075], [6079], [6083], [6087], [6091], [6102], [6106], [6110], [6121], [6125], [6129], [6140], [6144], [6148], [6152], [6156], [6160], [6164], [6168], [6172], [6176], [6180], [6184], [6188], [6192], [6196], [6200], [6204], [6208], [6212], [6216], [6220], [6224], [6228], [6232], [6236], [6240], [6251], [6255], [6259], [6263], [6267], [6278], [6282], [6286], [6290], [6294], [6298], [6302], [6306], [6310], [6314], [6325], [6329], [6333], [6344], [6348], [6352], [6356], [6360], [6371], [6375], [6379], [6383], [6387], [6391], [6402], [6413], [6417], [6421], [6425], [6429], [6440], [6444], [6455], [6459], [6463], [6467], [6471], [6475], [6486], [6490], [6494], [6498], [6502], [6506], [6510], [6514], [6525], [6529], [6533], [6537], [6541], [6545], [6549], [6553], [6557], [6560], [6802], [6806], [6810], [6816], [6820], [6822], [6837], [6838], [6839], [6841], [6842] [2018-11-07 18:40:49,753 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:40:49,754 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:40:53,649 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 18:40:53,650 INFO L272 AbstractInterpreter]: Visited 250 different actions 495 times. Merged at 5 different actions 7 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-11-07 18:40:53,687 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:40:53,688 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 18:40:53,689 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:40:53,689 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 18:40:53,702 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:40:53,703 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 18:40:53,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:40:53,864 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 18:40:54,227 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 204 proven. 2 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2018-11-07 18:40:54,227 INFO L316 TraceCheckSpWp]: Computing backward predicates... Received shutdown request... [2018-11-07 18:40:54,323 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-11-07 18:40:54,525 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 18:40:54,525 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 18:40:54,535 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 18:40:54,536 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 06:40:54 BoogieIcfgContainer [2018-11-07 18:40:54,536 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 18:40:54,537 INFO L168 Benchmark]: Toolchain (without parser) took 210518.18 ms. Allocated memory was 1.5 GB in the beginning and 3.9 GB in the end (delta: 2.4 GB). Free memory was 1.4 GB in the beginning and 2.7 GB in the end (delta: -1.3 GB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-11-07 18:40:54,538 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 18:40:54,539 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3441.34 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 401.6 MB). Peak memory consumption was 401.6 MB. Max. memory is 7.1 GB. [2018-11-07 18:40:54,540 INFO L168 Benchmark]: Boogie Procedure Inliner took 528.25 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 863.0 MB). Free memory was 1.0 GB in the beginning and 2.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 99.0 MB. Max. memory is 7.1 GB. [2018-11-07 18:40:54,541 INFO L168 Benchmark]: Boogie Preprocessor took 396.77 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: 51.2 MB). Peak memory consumption was 51.2 MB. Max. memory is 7.1 GB. [2018-11-07 18:40:54,541 INFO L168 Benchmark]: RCFGBuilder took 15645.23 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 149.9 MB). Free memory was 2.3 GB in the beginning and 1.7 GB in the end (delta: 533.0 MB). Peak memory consumption was 682.9 MB. Max. memory is 7.1 GB. [2018-11-07 18:40:54,542 INFO L168 Benchmark]: TraceAbstraction took 190500.10 ms. Allocated memory was 2.6 GB in the beginning and 3.9 GB in the end (delta: 1.4 GB). Free memory was 1.7 GB in the beginning and 2.7 GB in the end (delta: -941.4 MB). Peak memory consumption was 410.2 MB. Max. memory is 7.1 GB. [2018-11-07 18:40:54,554 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 3441.34 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 401.6 MB). Peak memory consumption was 401.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 528.25 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 863.0 MB). Free memory was 1.0 GB in the beginning and 2.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 99.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 396.77 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: 51.2 MB). Peak memory consumption was 51.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 15645.23 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 149.9 MB). Free memory was 2.3 GB in the beginning and 1.7 GB in the end (delta: 533.0 MB). Peak memory consumption was 682.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 190500.10 ms. Allocated memory was 2.6 GB in the beginning and 3.9 GB in the end (delta: 1.4 GB). Free memory was 1.7 GB in the beginning and 2.7 GB in the end (delta: -941.4 MB). Peak memory consumption was 410.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 91]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 91). Cancelled while BasicCegarLoop was analyzing trace of length 441 with TraceHistMax 4,while TraceCheckSpWp was constructing backward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 7 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 1778 locations, 1 error locations. TIMEOUT Result, 190.3s OverallTime, 9 OverallIterations, 4 TraceHistogramMax, 171.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 7442 SDtfs, 44337 SDslu, 4356 SDs, 0 SdLazy, 63098 SolverSat, 18075 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 112.3s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 256 GetRequests, 209 SyntacticMatches, 6 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 3.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=99669occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 4.5s AbstIntTime, 2 AbstIntIterations, 1 AbstIntStrong, 0.9973741967142589 AbsIntWeakeningRatio, 0.1377551020408163 AbsIntAvgWeakeningVarsNumRemoved, 19.091836734693878 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 7.4s AutomataMinimizationTime, 8 MinimizatonAttempts, 2227 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.3s InterpolantComputationTime, 1154 NumberOfCodeBlocks, 1154 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 1146 ConstructedInterpolants, 0 QuantifiedInterpolants, 646047 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 7 PerfectInterpolantSequences, 205/274 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown