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 --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem19_label48_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dace188-m [2018-09-14 18:25:54,772 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-14 18:25:54,774 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-14 18:25:54,786 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-14 18:25:54,786 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-14 18:25:54,787 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-14 18:25:54,788 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-14 18:25:54,791 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-14 18:25:54,794 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-14 18:25:54,795 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-14 18:25:54,802 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-14 18:25:54,802 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-14 18:25:54,803 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-14 18:25:54,807 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-14 18:25:54,808 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-14 18:25:54,809 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-14 18:25:54,810 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-14 18:25:54,816 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-14 18:25:54,818 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-14 18:25:54,819 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-14 18:25:54,823 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-14 18:25:54,826 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-14 18:25:54,832 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-14 18:25:54,833 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-14 18:25:54,833 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-14 18:25:54,834 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-14 18:25:54,837 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-14 18:25:54,837 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-14 18:25:54,838 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-14 18:25:54,839 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-14 18:25:54,839 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-14 18:25:54,840 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-14 18:25:54,840 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-14 18:25:54,840 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-14 18:25:54,841 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-14 18:25:54,845 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-14 18:25:54,845 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-09-14 18:25:54,868 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-14 18:25:54,868 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-14 18:25:54,869 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-14 18:25:54,869 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-14 18:25:54,870 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-14 18:25:54,870 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-14 18:25:54,870 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-14 18:25:54,870 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-14 18:25:54,870 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-14 18:25:54,871 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-14 18:25:54,871 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-14 18:25:54,872 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-14 18:25:54,872 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-14 18:25:54,872 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-14 18:25:54,872 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-14 18:25:54,872 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-14 18:25:54,873 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-14 18:25:54,873 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-14 18:25:54,873 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-14 18:25:54,873 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-14 18:25:54,873 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-14 18:25:54,874 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-14 18:25:54,874 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-14 18:25:54,874 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-14 18:25:54,874 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-14 18:25:54,874 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-14 18:25:54,875 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-14 18:25:54,875 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-14 18:25:54,875 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-14 18:25:54,875 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-14 18:25:54,875 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-14 18:25:54,876 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-14 18:25:54,876 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-14 18:25:54,919 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-14 18:25:54,938 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-14 18:25:54,945 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-14 18:25:54,947 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-14 18:25:54,947 INFO L276 PluginConnector]: CDTParser initialized [2018-09-14 18:25:54,948 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label48_true-unreach-call.c [2018-09-14 18:25:55,300 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/04505815a/ef6134c4a8774f24a6876110aa3a13e9/FLAG5edad6b00 [2018-09-14 18:25:55,911 INFO L277 CDTParser]: Found 1 translation units. [2018-09-14 18:25:55,913 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label48_true-unreach-call.c [2018-09-14 18:25:55,961 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/04505815a/ef6134c4a8774f24a6876110aa3a13e9/FLAG5edad6b00 [2018-09-14 18:25:55,982 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/04505815a/ef6134c4a8774f24a6876110aa3a13e9 [2018-09-14 18:25:55,997 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-14 18:25:56,001 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-14 18:25:56,002 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-14 18:25:56,003 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-14 18:25:56,012 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-14 18:25:56,013 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 06:25:55" (1/1) ... [2018-09-14 18:25:56,016 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a21620d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:25:56, skipping insertion in model container [2018-09-14 18:25:56,017 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 06:25:55" (1/1) ... [2018-09-14 18:25:56,029 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-14 18:25:58,071 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 18:25:58,089 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-14 18:25:59,052 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 18:25:59,910 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:25:59 WrapperNode [2018-09-14 18:25:59,910 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-14 18:25:59,912 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-14 18:25:59,912 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-14 18:25:59,912 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-14 18:25:59,922 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:25:59" (1/1) ... [2018-09-14 18:26:00,086 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:25:59" (1/1) ... [2018-09-14 18:26:00,258 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-14 18:26:00,258 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-14 18:26:00,258 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-14 18:26:00,259 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-14 18:26:01,349 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:25:59" (1/1) ... [2018-09-14 18:26:01,349 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:25:59" (1/1) ... [2018-09-14 18:26:01,444 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:25:59" (1/1) ... [2018-09-14 18:26:01,445 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:25:59" (1/1) ... [2018-09-14 18:26:01,786 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:25:59" (1/1) ... [2018-09-14 18:26:01,857 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:25:59" (1/1) ... [2018-09-14 18:26:01,970 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:25:59" (1/1) ... [2018-09-14 18:26:02,129 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-14 18:26:02,130 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-14 18:26:02,130 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-14 18:26:02,130 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-14 18:26:02,131 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:25:59" (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 [2018-09-14 18:26:02,196 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-14 18:26:02,197 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-14 18:26:02,197 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2018-09-14 18:26:02,197 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2018-09-14 18:26:02,197 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2018-09-14 18:26:02,197 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2018-09-14 18:26:02,198 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-09-14 18:26:02,198 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-09-14 18:26:02,198 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-09-14 18:26:02,198 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-09-14 18:26:02,198 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-09-14 18:26:02,198 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-09-14 18:26:02,199 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-14 18:26:02,199 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-14 18:26:02,200 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-14 18:26:02,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-14 18:26:02,200 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-14 18:26:02,200 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-14 18:26:20,966 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-14 18:26:20,967 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 06:26:20 BoogieIcfgContainer [2018-09-14 18:26:20,967 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-14 18:26:20,968 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-14 18:26:20,968 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-14 18:26:20,972 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-14 18:26:20,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.09 06:25:55" (1/3) ... [2018-09-14 18:26:20,973 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6426cc84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 06:26:20, skipping insertion in model container [2018-09-14 18:26:20,973 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:25:59" (2/3) ... [2018-09-14 18:26:20,973 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6426cc84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 06:26:20, skipping insertion in model container [2018-09-14 18:26:20,973 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 06:26:20" (3/3) ... [2018-09-14 18:26:20,975 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label48_true-unreach-call.c [2018-09-14 18:26:20,986 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-14 18:26:20,995 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-14 18:26:21,064 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-14 18:26:21,065 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-14 18:26:21,065 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-14 18:26:21,066 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-14 18:26:21,066 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-14 18:26:21,066 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-14 18:26:21,066 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-14 18:26:21,066 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-14 18:26:21,066 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-14 18:26:21,124 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states. [2018-09-14 18:26:21,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-09-14 18:26:21,137 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:26:21,138 INFO L376 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] [2018-09-14 18:26:21,138 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:26:21,143 INFO L82 PathProgramCache]: Analyzing trace with hash 1378870764, now seen corresponding path program 1 times [2018-09-14 18:26:21,146 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:26:21,192 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:26:21,192 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:26:21,192 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:26:21,192 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:26:21,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:26:21,707 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 5 [2018-09-14 18:26:21,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:26:21,781 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 18:26:21,781 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-14 18:26:21,781 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:26:21,787 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-14 18:26:21,803 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-14 18:26:21,804 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 18:26:21,807 INFO L87 Difference]: Start difference. First operand 1778 states. Second operand 4 states. [2018-09-14 18:26:45,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:26:45,421 INFO L93 Difference]: Finished difference Result 6465 states and 12332 transitions. [2018-09-14 18:26:45,426 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-14 18:26:45,428 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 72 [2018-09-14 18:26:45,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:26:45,482 INFO L225 Difference]: With dead ends: 6465 [2018-09-14 18:26:45,482 INFO L226 Difference]: Without dead ends: 4681 [2018-09-14 18:26:45,499 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 18:26:45,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4681 states. [2018-09-14 18:26:45,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4681 to 3200. [2018-09-14 18:26:45,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3200 states. [2018-09-14 18:26:45,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3200 states to 3200 states and 5132 transitions. [2018-09-14 18:26:45,907 INFO L78 Accepts]: Start accepts. Automaton has 3200 states and 5132 transitions. Word has length 72 [2018-09-14 18:26:45,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:26:45,908 INFO L480 AbstractCegarLoop]: Abstraction has 3200 states and 5132 transitions. [2018-09-14 18:26:45,908 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-14 18:26:45,908 INFO L276 IsEmpty]: Start isEmpty. Operand 3200 states and 5132 transitions. [2018-09-14 18:26:45,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-09-14 18:26:45,919 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:26:45,920 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 18:26:45,920 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:26:45,922 INFO L82 PathProgramCache]: Analyzing trace with hash -1394303167, now seen corresponding path program 1 times [2018-09-14 18:26:45,922 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:26:45,923 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:26:45,923 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:26:45,924 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:26:45,924 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:26:45,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:26:46,268 WARN L178 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 18:26:46,665 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:26:46,666 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 18:26:46,666 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 18:26:46,666 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:26:46,669 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 18:26:46,669 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 18:26:46,669 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-14 18:26:46,670 INFO L87 Difference]: Start difference. First operand 3200 states and 5132 transitions. Second operand 6 states. [2018-09-14 18:27:16,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:27:16,254 INFO L93 Difference]: Finished difference Result 12097 states and 19723 transitions. [2018-09-14 18:27:16,257 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 18:27:16,258 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 144 [2018-09-14 18:27:16,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:27:16,302 INFO L225 Difference]: With dead ends: 12097 [2018-09-14 18:27:16,302 INFO L226 Difference]: Without dead ends: 8903 [2018-09-14 18:27:16,316 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 [2018-09-14 18:27:16,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8903 states. [2018-09-14 18:27:16,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8903 to 8846. [2018-09-14 18:27:16,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8846 states. [2018-09-14 18:27:16,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8846 states to 8846 states and 12708 transitions. [2018-09-14 18:27:16,562 INFO L78 Accepts]: Start accepts. Automaton has 8846 states and 12708 transitions. Word has length 144 [2018-09-14 18:27:16,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:27:16,563 INFO L480 AbstractCegarLoop]: Abstraction has 8846 states and 12708 transitions. [2018-09-14 18:27:16,563 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 18:27:16,564 INFO L276 IsEmpty]: Start isEmpty. Operand 8846 states and 12708 transitions. [2018-09-14 18:27:16,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-09-14 18:27:16,577 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:27:16,578 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 18:27:16,578 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:27:16,578 INFO L82 PathProgramCache]: Analyzing trace with hash -322669480, now seen corresponding path program 1 times [2018-09-14 18:27:16,579 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:27:16,580 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:27:16,580 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:27:16,580 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:27:16,580 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:27:16,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:27:16,919 WARN L178 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 18:27:16,974 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:27:16,974 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 18:27:16,975 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 18:27:16,975 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:27:16,975 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 18:27:16,976 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 18:27:16,976 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-14 18:27:16,976 INFO L87 Difference]: Start difference. First operand 8846 states and 12708 transitions. Second operand 6 states. [2018-09-14 18:27:41,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:27:41,940 INFO L93 Difference]: Finished difference Result 29431 states and 43425 transitions. [2018-09-14 18:27:41,943 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 18:27:41,943 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 146 [2018-09-14 18:27:41,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:27:42,038 INFO L225 Difference]: With dead ends: 29431 [2018-09-14 18:27:42,039 INFO L226 Difference]: Without dead ends: 20591 [2018-09-14 18:27:42,078 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 [2018-09-14 18:27:42,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20591 states. [2018-09-14 18:27:42,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20591 to 20435. [2018-09-14 18:27:42,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20435 states. [2018-09-14 18:27:42,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20435 states to 20435 states and 28676 transitions. [2018-09-14 18:27:42,531 INFO L78 Accepts]: Start accepts. Automaton has 20435 states and 28676 transitions. Word has length 146 [2018-09-14 18:27:42,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:27:42,531 INFO L480 AbstractCegarLoop]: Abstraction has 20435 states and 28676 transitions. [2018-09-14 18:27:42,531 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 18:27:42,532 INFO L276 IsEmpty]: Start isEmpty. Operand 20435 states and 28676 transitions. [2018-09-14 18:27:42,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2018-09-14 18:27:42,538 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:27:42,538 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 18:27:42,538 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:27:42,539 INFO L82 PathProgramCache]: Analyzing trace with hash 1699491839, now seen corresponding path program 1 times [2018-09-14 18:27:42,539 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:27:42,540 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:27:42,540 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:27:42,540 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:27:42,540 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:27:42,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:27:42,796 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:27:42,796 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 18:27:42,797 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 18:27:42,797 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:27:42,797 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 18:27:42,798 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 18:27:42,798 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-09-14 18:27:42,798 INFO L87 Difference]: Start difference. First operand 20435 states and 28676 transitions. Second operand 6 states. [2018-09-14 18:28:06,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:28:06,018 INFO L93 Difference]: Finished difference Result 62260 states and 89704 transitions. [2018-09-14 18:28:06,018 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-09-14 18:28:06,018 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 154 [2018-09-14 18:28:06,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:28:06,162 INFO L225 Difference]: With dead ends: 62260 [2018-09-14 18:28:06,163 INFO L226 Difference]: Without dead ends: 41831 [2018-09-14 18:28:06,230 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-09-14 18:28:06,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41831 states. [2018-09-14 18:28:06,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41831 to 41494. [2018-09-14 18:28:06,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41494 states. [2018-09-14 18:28:07,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41494 states to 41494 states and 57737 transitions. [2018-09-14 18:28:07,054 INFO L78 Accepts]: Start accepts. Automaton has 41494 states and 57737 transitions. Word has length 154 [2018-09-14 18:28:07,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:28:07,054 INFO L480 AbstractCegarLoop]: Abstraction has 41494 states and 57737 transitions. [2018-09-14 18:28:07,055 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 18:28:07,055 INFO L276 IsEmpty]: Start isEmpty. Operand 41494 states and 57737 transitions. [2018-09-14 18:28:07,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-09-14 18:28:07,059 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:28:07,059 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 18:28:07,060 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:28:07,060 INFO L82 PathProgramCache]: Analyzing trace with hash -666275863, now seen corresponding path program 1 times [2018-09-14 18:28:07,060 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:28:07,061 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:28:07,061 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:28:07,061 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:28:07,061 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:28:07,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:28:07,370 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:28:07,371 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 18:28:07,371 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-14 18:28:07,371 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:28:07,372 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 18:28:07,372 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 18:28:07,372 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-14 18:28:07,374 INFO L87 Difference]: Start difference. First operand 41494 states and 57737 transitions. Second operand 5 states. [2018-09-14 18:28:39,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:28:39,319 INFO L93 Difference]: Finished difference Result 125829 states and 180377 transitions. [2018-09-14 18:28:39,321 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-14 18:28:39,321 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 174 [2018-09-14 18:28:39,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:28:39,575 INFO L225 Difference]: With dead ends: 125829 [2018-09-14 18:28:39,576 INFO L226 Difference]: Without dead ends: 84341 [2018-09-14 18:28:39,651 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 [2018-09-14 18:28:39,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84341 states. [2018-09-14 18:28:40,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84341 to 83141. [2018-09-14 18:28:40,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83141 states. [2018-09-14 18:28:41,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83141 states to 83141 states and 107155 transitions. [2018-09-14 18:28:41,059 INFO L78 Accepts]: Start accepts. Automaton has 83141 states and 107155 transitions. Word has length 174 [2018-09-14 18:28:41,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:28:41,059 INFO L480 AbstractCegarLoop]: Abstraction has 83141 states and 107155 transitions. [2018-09-14 18:28:41,060 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 18:28:41,060 INFO L276 IsEmpty]: Start isEmpty. Operand 83141 states and 107155 transitions. [2018-09-14 18:28:41,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2018-09-14 18:28:41,066 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:28:41,067 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 18:28:41,067 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:28:41,067 INFO L82 PathProgramCache]: Analyzing trace with hash 1062511734, now seen corresponding path program 1 times [2018-09-14 18:28:41,068 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:28:41,068 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:28:41,069 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:28:41,069 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:28:41,069 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:28:41,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:28:41,406 WARN L178 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 18:28:41,818 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:28:41,818 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 18:28:41,818 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 18:28:41,818 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:28:41,819 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 18:28:41,819 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 18:28:41,819 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-14 18:28:41,820 INFO L87 Difference]: Start difference. First operand 83141 states and 107155 transitions. Second operand 6 states. [2018-09-14 18:28:59,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:28:59,675 INFO L93 Difference]: Finished difference Result 188087 states and 253002 transitions. [2018-09-14 18:28:59,684 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 18:28:59,685 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 237 [2018-09-14 18:28:59,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:28:59,970 INFO L225 Difference]: With dead ends: 188087 [2018-09-14 18:28:59,970 INFO L226 Difference]: Without dead ends: 104952 [2018-09-14 18:29:00,107 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 [2018-09-14 18:29:00,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104952 states. [2018-09-14 18:29:02,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104952 to 104189. [2018-09-14 18:29:02,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104189 states. [2018-09-14 18:29:02,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104189 states to 104189 states and 134663 transitions. [2018-09-14 18:29:02,309 INFO L78 Accepts]: Start accepts. Automaton has 104189 states and 134663 transitions. Word has length 237 [2018-09-14 18:29:02,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:29:02,310 INFO L480 AbstractCegarLoop]: Abstraction has 104189 states and 134663 transitions. [2018-09-14 18:29:02,310 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 18:29:02,310 INFO L276 IsEmpty]: Start isEmpty. Operand 104189 states and 134663 transitions. [2018-09-14 18:29:02,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 560 [2018-09-14 18:29:02,324 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:29:02,324 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 18:29:02,325 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:29:02,325 INFO L82 PathProgramCache]: Analyzing trace with hash 771212805, now seen corresponding path program 1 times [2018-09-14 18:29:02,325 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:29:02,326 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:29:02,326 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:29:02,326 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:29:02,326 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:29:02,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:29:03,049 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-09-14 18:29:03,049 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:29:03,049 INFO L197 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 [2018-09-14 18:29:03,060 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:29:03,060 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:29:03,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:29:03,256 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:29:03,587 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:29:03,587 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:29:03,982 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:29:04,019 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-14 18:29:04,020 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 5 [2018-09-14 18:29:04,020 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:29:04,022 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 18:29:04,022 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 18:29:04,022 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-09-14 18:29:04,023 INFO L87 Difference]: Start difference. First operand 104189 states and 134663 transitions. Second operand 3 states. [2018-09-14 18:29:20,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:29:20,057 INFO L93 Difference]: Finished difference Result 236741 states and 310291 transitions. [2018-09-14 18:29:20,057 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 18:29:20,057 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 559 [2018-09-14 18:29:20,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:29:20,552 INFO L225 Difference]: With dead ends: 236741 [2018-09-14 18:29:20,552 INFO L226 Difference]: Without dead ends: 132558 [2018-09-14 18:29:20,793 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1126 GetRequests, 1118 SyntacticMatches, 5 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-09-14 18:29:20,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132558 states. [2018-09-14 18:29:23,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132558 to 132507. [2018-09-14 18:29:23,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132507 states. [2018-09-14 18:29:24,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132507 states to 132507 states and 165233 transitions. [2018-09-14 18:29:24,122 INFO L78 Accepts]: Start accepts. Automaton has 132507 states and 165233 transitions. Word has length 559 [2018-09-14 18:29:24,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:29:24,123 INFO L480 AbstractCegarLoop]: Abstraction has 132507 states and 165233 transitions. [2018-09-14 18:29:24,123 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 18:29:24,123 INFO L276 IsEmpty]: Start isEmpty. Operand 132507 states and 165233 transitions. [2018-09-14 18:29:24,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 757 [2018-09-14 18:29:24,165 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:29:24,166 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 18:29:24,166 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:29:24,167 INFO L82 PathProgramCache]: Analyzing trace with hash 251105618, now seen corresponding path program 1 times [2018-09-14 18:29:24,167 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:29:24,168 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:29:24,168 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:29:24,168 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:29:24,168 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:29:24,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:29:25,112 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 133 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-09-14 18:29:25,112 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 18:29:25,113 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-14 18:29:25,113 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:29:25,114 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-14 18:29:25,114 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-14 18:29:25,115 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 18:29:25,115 INFO L87 Difference]: Start difference. First operand 132507 states and 165233 transitions. Second operand 4 states. [2018-09-14 18:29:43,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:29:43,432 INFO L93 Difference]: Finished difference Result 298940 states and 379749 transitions. [2018-09-14 18:29:43,432 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-14 18:29:43,432 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 756 [2018-09-14 18:29:43,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:29:43,800 INFO L225 Difference]: With dead ends: 298940 [2018-09-14 18:29:43,801 INFO L226 Difference]: Without dead ends: 157831 [2018-09-14 18:29:43,960 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 18:29:44,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157831 states. [2018-09-14 18:29:45,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157831 to 157695. [2018-09-14 18:29:45,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157695 states. [2018-09-14 18:29:47,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157695 states to 157695 states and 192645 transitions. [2018-09-14 18:29:47,363 INFO L78 Accepts]: Start accepts. Automaton has 157695 states and 192645 transitions. Word has length 756 [2018-09-14 18:29:47,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:29:47,366 INFO L480 AbstractCegarLoop]: Abstraction has 157695 states and 192645 transitions. [2018-09-14 18:29:47,366 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-14 18:29:47,366 INFO L276 IsEmpty]: Start isEmpty. Operand 157695 states and 192645 transitions. [2018-09-14 18:29:47,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 833 [2018-09-14 18:29:47,393 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:29:47,394 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 18:29:47,394 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:29:47,395 INFO L82 PathProgramCache]: Analyzing trace with hash 852844764, now seen corresponding path program 1 times [2018-09-14 18:29:47,395 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:29:47,397 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:29:47,397 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:29:47,398 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:29:47,398 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:29:47,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2018-09-14 18:29:47,747 FATAL L265 ToolchainWalker]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Timeout exceeded at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.interpolate(Interpolator.java:215) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:201) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:919) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.managedscript.ManagedScript.getInterpolants(ManagedScript.java:199) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:282) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsTree(InterpolatingTraceCheckCraig.java:271) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:207) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:109) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructCraig(TraceCheckConstructor.java:211) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructTraceCheck(TraceCheckConstructor.java:183) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.get(TraceCheckConstructor.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseTaipanRefinementStrategy.getTraceCheck(BaseTaipanRefinementStrategy.java:223) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:224) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:198) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:70) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:430) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:434) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:375) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:313) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2018-09-14 18:29:47,751 INFO L168 Benchmark]: Toolchain (without parser) took 231753.35 ms. Allocated memory was 1.5 GB in the beginning and 3.5 GB in the end (delta: 2.0 GB). Free memory was 1.4 GB in the beginning and 1.8 GB in the end (delta: -360.3 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. [2018-09-14 18:29:47,753 INFO L168 Benchmark]: CDTParser took 0.23 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. [2018-09-14 18:29:47,753 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3908.67 ms. Allocated memory was 1.5 GB in the beginning and 1.7 GB in the end (delta: 195.6 MB). Free memory was 1.4 GB in the beginning and 1.5 GB in the end (delta: -105.2 MB). Peak memory consumption was 489.0 MB. Max. memory is 7.1 GB. [2018-09-14 18:29:47,755 INFO L168 Benchmark]: Boogie Procedure Inliner took 346.44 ms. Allocated memory is still 1.7 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 48.2 MB). Peak memory consumption was 48.2 MB. Max. memory is 7.1 GB. [2018-09-14 18:29:47,756 INFO L168 Benchmark]: Boogie Preprocessor took 1871.53 ms. Allocated memory was 1.7 GB in the beginning and 2.7 GB in the end (delta: 914.4 MB). Free memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: -915.0 MB). Peak memory consumption was 127.0 MB. Max. memory is 7.1 GB. [2018-09-14 18:29:47,758 INFO L168 Benchmark]: RCFGBuilder took 18837.17 ms. Allocated memory was 2.7 GB in the beginning and 2.9 GB in the end (delta: 228.6 MB). Free memory was 2.4 GB in the beginning and 2.2 GB in the end (delta: 160.1 MB). Peak memory consumption was 998.8 MB. Max. memory is 7.1 GB. [2018-09-14 18:29:47,759 INFO L168 Benchmark]: TraceAbstraction took 206782.23 ms. Allocated memory was 2.9 GB in the beginning and 3.5 GB in the end (delta: 643.8 MB). Free memory was 2.2 GB in the beginning and 1.8 GB in the end (delta: 451.6 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-09-14 18:29:47,768 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 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 3908.67 ms. Allocated memory was 1.5 GB in the beginning and 1.7 GB in the end (delta: 195.6 MB). Free memory was 1.4 GB in the beginning and 1.5 GB in the end (delta: -105.2 MB). Peak memory consumption was 489.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 346.44 ms. Allocated memory is still 1.7 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 48.2 MB). Peak memory consumption was 48.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 1871.53 ms. Allocated memory was 1.7 GB in the beginning and 2.7 GB in the end (delta: 914.4 MB). Free memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: -915.0 MB). Peak memory consumption was 127.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 18837.17 ms. Allocated memory was 2.7 GB in the beginning and 2.9 GB in the end (delta: 228.6 MB). Free memory was 2.4 GB in the beginning and 2.2 GB in the end (delta: 160.1 MB). Peak memory consumption was 998.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 206782.23 ms. Allocated memory was 2.9 GB in the beginning and 3.5 GB in the end (delta: 643.8 MB). Free memory was 2.2 GB in the beginning and 1.8 GB in the end (delta: 451.6 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: Timeout exceeded de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: Timeout exceeded: de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.interpolate(Interpolator.java:215) RESULT: Ultimate could not prove your program: Toolchain returned no result. Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem19_label48_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-14_18-29-47-792.csv Completed graceful shutdown