java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem19_label25_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 03:53:06,762 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 03:53:06,765 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 03:53:06,782 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 03:53:06,782 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 03:53:06,783 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 03:53:06,785 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 03:53:06,788 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 03:53:06,791 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 03:53:06,799 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 03:53:06,800 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 03:53:06,802 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 03:53:06,803 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 03:53:06,804 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 03:53:06,805 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 03:53:06,806 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 03:53:06,807 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 03:53:06,809 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 03:53:06,811 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 03:53:06,812 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 03:53:06,813 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 03:53:06,814 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 03:53:06,816 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-27 03:53:06,828 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 03:53:06,828 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 03:53:06,830 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 03:53:06,831 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 03:53:06,831 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-27 03:53:06,857 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 03:53:06,857 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 03:53:06,859 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 03:53:06,859 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 03:53:06,859 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 03:53:06,859 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 03:53:06,860 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 03:53:06,860 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 03:53:06,860 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 03:53:06,860 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 03:53:06,861 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 03:53:06,861 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 03:53:06,861 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 03:53:06,862 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 03:53:06,862 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 03:53:06,862 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 03:53:06,862 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 03:53:06,862 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 03:53:06,863 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 03:53:06,864 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 03:53:06,864 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 03:53:06,864 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 03:53:06,864 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 03:53:06,864 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 03:53:06,865 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 03:53:06,865 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 03:53:06,865 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 03:53:06,866 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 03:53:06,866 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 03:53:06,866 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 03:53:06,866 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 03:53:06,866 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 03:53:06,866 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 03:53:06,867 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 03:53:06,910 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 03:53:06,927 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 03:53:06,932 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 03:53:06,933 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 03:53:06,934 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 03:53:06,935 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label25_true-unreach-call.c [2018-10-27 03:53:07,012 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d6daf985a/bfb8d0a20e5b4c0fa4956d24ab89488c/FLAG250f905e2 [2018-10-27 03:53:07,939 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 03:53:07,941 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label25_true-unreach-call.c [2018-10-27 03:53:07,986 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d6daf985a/bfb8d0a20e5b4c0fa4956d24ab89488c/FLAG250f905e2 [2018-10-27 03:53:08,001 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d6daf985a/bfb8d0a20e5b4c0fa4956d24ab89488c [2018-10-27 03:53:08,013 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 03:53:08,015 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 03:53:08,016 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 03:53:08,016 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 03:53:08,020 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 03:53:08,021 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 03:53:08" (1/1) ... [2018-10-27 03:53:08,025 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4621111d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:53:08, skipping insertion in model container [2018-10-27 03:53:08,025 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 03:53:08" (1/1) ... [2018-10-27 03:53:08,037 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 03:53:08,273 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 03:53:10,532 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 03:53:10,540 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 03:53:11,892 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 03:53:11,958 INFO L193 MainTranslator]: Completed translation [2018-10-27 03:53:11,958 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:53:11 WrapperNode [2018-10-27 03:53:11,959 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 03:53:11,960 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 03:53:11,960 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 03:53:11,960 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 03:53:11,971 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:53:11" (1/1) ... [2018-10-27 03:53:12,084 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:53:11" (1/1) ... [2018-10-27 03:53:12,768 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 03:53:12,769 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 03:53:12,769 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 03:53:12,769 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 03:53:12,780 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:53:11" (1/1) ... [2018-10-27 03:53:12,781 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:53:11" (1/1) ... [2018-10-27 03:53:12,869 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:53:11" (1/1) ... [2018-10-27 03:53:12,869 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:53:11" (1/1) ... [2018-10-27 03:53:13,075 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:53:11" (1/1) ... [2018-10-27 03:53:13,139 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:53:11" (1/1) ... [2018-10-27 03:53:13,211 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:53:11" (1/1) ... [2018-10-27 03:53:13,276 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 03:53:13,277 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 03:53:13,277 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 03:53:13,277 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 03:53:13,278 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:53:11" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-27 03:53:13,343 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 03:53:13,344 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 03:53:13,344 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2018-10-27 03:53:13,344 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2018-10-27 03:53:13,344 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2018-10-27 03:53:13,345 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2018-10-27 03:53:13,345 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-27 03:53:13,345 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-27 03:53:13,345 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-27 03:53:13,345 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-27 03:53:13,345 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 03:53:13,346 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 03:53:13,346 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 03:53:13,347 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 03:53:13,347 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 03:53:13,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 03:53:13,347 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 03:53:13,347 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 03:53:30,585 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 03:53:30,586 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 03:53:30 BoogieIcfgContainer [2018-10-27 03:53:30,586 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 03:53:30,588 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 03:53:30,588 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 03:53:30,591 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 03:53:30,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 03:53:08" (1/3) ... [2018-10-27 03:53:30,592 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7686172d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 03:53:30, skipping insertion in model container [2018-10-27 03:53:30,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:53:11" (2/3) ... [2018-10-27 03:53:30,593 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7686172d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 03:53:30, skipping insertion in model container [2018-10-27 03:53:30,593 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 03:53:30" (3/3) ... [2018-10-27 03:53:30,595 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label25_true-unreach-call.c [2018-10-27 03:53:30,605 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 03:53:30,617 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 03:53:30,635 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 03:53:30,692 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 03:53:30,692 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 03:53:30,692 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 03:53:30,693 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 03:53:30,693 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 03:53:30,693 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 03:53:30,693 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 03:53:30,693 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 03:53:30,756 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states. [2018-10-27 03:53:30,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-10-27 03:53:30,764 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:53:30,765 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 03:53:30,768 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:53:30,776 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:53:30,776 INFO L82 PathProgramCache]: Analyzing trace with hash -2043790486, now seen corresponding path program 1 times [2018-10-27 03:53:30,779 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:53:30,838 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:53:30,839 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:53:30,839 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:53:30,839 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:53:30,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:53:31,294 WARN L179 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 5 [2018-10-27 03:53:31,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 03:53:31,323 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 03:53:31,323 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 03:53:31,323 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:53:31,329 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 03:53:31,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 03:53:31,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 03:53:31,349 INFO L87 Difference]: Start difference. First operand 1778 states. Second operand 4 states. [2018-10-27 03:53:56,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 03:53:56,551 INFO L93 Difference]: Finished difference Result 6465 states and 12332 transitions. [2018-10-27 03:53:56,551 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 03:53:56,553 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 43 [2018-10-27 03:53:56,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 03:53:56,604 INFO L225 Difference]: With dead ends: 6465 [2018-10-27 03:53:56,604 INFO L226 Difference]: Without dead ends: 4681 [2018-10-27 03:53:56,621 INFO L605 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 [2018-10-27 03:53:56,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4681 states. [2018-10-27 03:53:56,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4681 to 3200. [2018-10-27 03:53:56,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3200 states. [2018-10-27 03:53:56,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3200 states to 3200 states and 5132 transitions. [2018-10-27 03:53:56,863 INFO L78 Accepts]: Start accepts. Automaton has 3200 states and 5132 transitions. Word has length 43 [2018-10-27 03:53:56,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 03:53:56,864 INFO L481 AbstractCegarLoop]: Abstraction has 3200 states and 5132 transitions. [2018-10-27 03:53:56,864 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 03:53:56,865 INFO L276 IsEmpty]: Start isEmpty. Operand 3200 states and 5132 transitions. [2018-10-27 03:53:56,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2018-10-27 03:53:56,878 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:53:56,878 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, 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] [2018-10-27 03:53:56,879 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:53:56,879 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:53:56,879 INFO L82 PathProgramCache]: Analyzing trace with hash 96835924, now seen corresponding path program 1 times [2018-10-27 03:53:56,879 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:53:56,883 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:53:56,883 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:53:56,883 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:53:56,884 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:53:56,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:53:57,260 WARN L179 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 03:53:57,683 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 03:53:57,684 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 03:53:57,684 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 03:53:57,684 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:53:57,688 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 03:53:57,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 03:53:57,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 03:53:57,689 INFO L87 Difference]: Start difference. First operand 3200 states and 5132 transitions. Second operand 6 states. [2018-10-27 03:54:26,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 03:54:26,161 INFO L93 Difference]: Finished difference Result 12097 states and 19723 transitions. [2018-10-27 03:54:26,161 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 03:54:26,162 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 115 [2018-10-27 03:54:26,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 03:54:26,213 INFO L225 Difference]: With dead ends: 12097 [2018-10-27 03:54:26,213 INFO L226 Difference]: Without dead ends: 8903 [2018-10-27 03:54:26,229 INFO L605 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 [2018-10-27 03:54:26,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8903 states. [2018-10-27 03:54:26,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8903 to 8846. [2018-10-27 03:54:26,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8846 states. [2018-10-27 03:54:26,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8846 states to 8846 states and 12708 transitions. [2018-10-27 03:54:26,509 INFO L78 Accepts]: Start accepts. Automaton has 8846 states and 12708 transitions. Word has length 115 [2018-10-27 03:54:26,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 03:54:26,509 INFO L481 AbstractCegarLoop]: Abstraction has 8846 states and 12708 transitions. [2018-10-27 03:54:26,511 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 03:54:26,511 INFO L276 IsEmpty]: Start isEmpty. Operand 8846 states and 12708 transitions. [2018-10-27 03:54:26,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2018-10-27 03:54:26,518 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:54:26,523 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, 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] [2018-10-27 03:54:26,524 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:54:26,524 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:54:26,524 INFO L82 PathProgramCache]: Analyzing trace with hash 554705181, now seen corresponding path program 1 times [2018-10-27 03:54:26,524 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:54:26,525 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:54:26,525 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:54:26,526 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:54:26,526 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:54:26,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:54:26,826 WARN L179 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 03:54:26,947 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 03:54:26,947 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 03:54:26,947 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 03:54:26,948 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:54:26,948 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 03:54:26,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 03:54:26,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 03:54:26,949 INFO L87 Difference]: Start difference. First operand 8846 states and 12708 transitions. Second operand 6 states. [2018-10-27 03:54:53,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 03:54:53,255 INFO L93 Difference]: Finished difference Result 29443 states and 43447 transitions. [2018-10-27 03:54:53,255 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-27 03:54:53,255 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 117 [2018-10-27 03:54:53,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 03:54:53,361 INFO L225 Difference]: With dead ends: 29443 [2018-10-27 03:54:53,362 INFO L226 Difference]: Without dead ends: 20603 [2018-10-27 03:54:53,399 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 03:54:53,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20603 states. [2018-10-27 03:54:53,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20603 to 20441. [2018-10-27 03:54:53,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20441 states. [2018-10-27 03:54:53,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20441 states to 20441 states and 28688 transitions. [2018-10-27 03:54:53,854 INFO L78 Accepts]: Start accepts. Automaton has 20441 states and 28688 transitions. Word has length 117 [2018-10-27 03:54:53,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 03:54:53,856 INFO L481 AbstractCegarLoop]: Abstraction has 20441 states and 28688 transitions. [2018-10-27 03:54:53,856 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 03:54:53,856 INFO L276 IsEmpty]: Start isEmpty. Operand 20441 states and 28688 transitions. [2018-10-27 03:54:53,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2018-10-27 03:54:53,862 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:54:53,862 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, 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] [2018-10-27 03:54:53,866 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:54:53,867 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:54:53,867 INFO L82 PathProgramCache]: Analyzing trace with hash -730954474, now seen corresponding path program 1 times [2018-10-27 03:54:53,867 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:54:53,869 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:54:53,869 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:54:53,869 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:54:53,869 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:54:53,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:54:54,174 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 03:54:54,174 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 03:54:54,174 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 03:54:54,174 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:54:54,175 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 03:54:54,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 03:54:54,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-27 03:54:54,176 INFO L87 Difference]: Start difference. First operand 20441 states and 28688 transitions. Second operand 6 states. [2018-10-27 03:55:15,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 03:55:15,344 INFO L93 Difference]: Finished difference Result 62278 states and 89740 transitions. [2018-10-27 03:55:15,344 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-27 03:55:15,344 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 125 [2018-10-27 03:55:15,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 03:55:15,522 INFO L225 Difference]: With dead ends: 62278 [2018-10-27 03:55:15,522 INFO L226 Difference]: Without dead ends: 41843 [2018-10-27 03:55:15,601 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-10-27 03:55:15,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41843 states. [2018-10-27 03:55:16,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41843 to 41506. [2018-10-27 03:55:16,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41506 states. [2018-10-27 03:55:16,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41506 states to 41506 states and 57761 transitions. [2018-10-27 03:55:16,507 INFO L78 Accepts]: Start accepts. Automaton has 41506 states and 57761 transitions. Word has length 125 [2018-10-27 03:55:16,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 03:55:16,507 INFO L481 AbstractCegarLoop]: Abstraction has 41506 states and 57761 transitions. [2018-10-27 03:55:16,507 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 03:55:16,508 INFO L276 IsEmpty]: Start isEmpty. Operand 41506 states and 57761 transitions. [2018-10-27 03:55:16,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2018-10-27 03:55:16,512 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:55:16,514 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, 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] [2018-10-27 03:55:16,514 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:55:16,514 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:55:16,515 INFO L82 PathProgramCache]: Analyzing trace with hash 1382979436, now seen corresponding path program 1 times [2018-10-27 03:55:16,515 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:55:16,515 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:55:16,516 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:55:16,516 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:55:16,516 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:55:16,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:55:16,870 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 03:55:16,871 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 03:55:16,871 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-27 03:55:16,871 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:55:16,872 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 03:55:16,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 03:55:16,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-27 03:55:16,873 INFO L87 Difference]: Start difference. First operand 41506 states and 57761 transitions. Second operand 5 states. [2018-10-27 03:55:47,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 03:55:47,916 INFO L93 Difference]: Finished difference Result 125853 states and 180441 transitions. [2018-10-27 03:55:47,921 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-27 03:55:47,921 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 145 [2018-10-27 03:55:47,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 03:55:48,217 INFO L225 Difference]: With dead ends: 125853 [2018-10-27 03:55:48,217 INFO L226 Difference]: Without dead ends: 84353 [2018-10-27 03:55:48,315 INFO L605 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 [2018-10-27 03:55:48,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84353 states. [2018-10-27 03:55:49,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84353 to 83169. [2018-10-27 03:55:49,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83169 states. [2018-10-27 03:55:49,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83169 states to 83169 states and 107249 transitions. [2018-10-27 03:55:49,937 INFO L78 Accepts]: Start accepts. Automaton has 83169 states and 107249 transitions. Word has length 145 [2018-10-27 03:55:49,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 03:55:49,937 INFO L481 AbstractCegarLoop]: Abstraction has 83169 states and 107249 transitions. [2018-10-27 03:55:49,937 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 03:55:49,937 INFO L276 IsEmpty]: Start isEmpty. Operand 83169 states and 107249 transitions. [2018-10-27 03:55:49,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2018-10-27 03:55:49,942 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:55:49,943 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, 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] [2018-10-27 03:55:49,943 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:55:49,943 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:55:49,944 INFO L82 PathProgramCache]: Analyzing trace with hash 544420257, now seen corresponding path program 1 times [2018-10-27 03:55:49,944 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:55:49,944 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:55:49,945 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:55:49,945 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:55:49,945 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:55:49,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:55:50,236 WARN L179 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 03:55:50,653 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 03:55:50,653 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 03:55:50,653 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 03:55:50,653 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:55:50,654 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 03:55:50,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 03:55:50,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 03:55:50,655 INFO L87 Difference]: Start difference. First operand 83169 states and 107249 transitions. Second operand 6 states. [2018-10-27 03:56:08,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 03:56:08,545 INFO L93 Difference]: Finished difference Result 188111 states and 253162 transitions. [2018-10-27 03:56:08,549 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 03:56:08,549 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 208 [2018-10-27 03:56:08,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 03:56:08,922 INFO L225 Difference]: With dead ends: 188111 [2018-10-27 03:56:08,923 INFO L226 Difference]: Without dead ends: 104948 [2018-10-27 03:56:09,073 INFO L605 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 [2018-10-27 03:56:09,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104948 states. [2018-10-27 03:56:11,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104948 to 104207. [2018-10-27 03:56:11,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104207 states. [2018-10-27 03:56:11,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104207 states to 104207 states and 134775 transitions. [2018-10-27 03:56:11,726 INFO L78 Accepts]: Start accepts. Automaton has 104207 states and 134775 transitions. Word has length 208 [2018-10-27 03:56:11,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 03:56:11,726 INFO L481 AbstractCegarLoop]: Abstraction has 104207 states and 134775 transitions. [2018-10-27 03:56:11,726 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 03:56:11,727 INFO L276 IsEmpty]: Start isEmpty. Operand 104207 states and 134775 transitions. [2018-10-27 03:56:11,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 531 [2018-10-27 03:56:11,740 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:56:11,741 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, 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] [2018-10-27 03:56:11,741 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:56:11,741 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:56:11,742 INFO L82 PathProgramCache]: Analyzing trace with hash -1346825870, now seen corresponding path program 1 times [2018-10-27 03:56:11,742 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:56:11,743 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:56:11,743 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:56:11,743 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:56:11,743 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:56:11,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:56:12,313 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 03:56:12,313 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 03:56:12,313 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 03:56:12,313 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:56:12,314 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 03:56:12,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 03:56:12,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 03:56:12,315 INFO L87 Difference]: Start difference. First operand 104207 states and 134775 transitions. Second operand 4 states. [2018-10-27 03:56:36,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 03:56:36,977 INFO L93 Difference]: Finished difference Result 299218 states and 408232 transitions. [2018-10-27 03:56:36,977 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 03:56:36,977 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 530 [2018-10-27 03:56:36,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 03:56:37,734 INFO L225 Difference]: With dead ends: 299218 [2018-10-27 03:56:37,735 INFO L226 Difference]: Without dead ends: 195017 [2018-10-27 03:56:37,998 INFO L605 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 [2018-10-27 03:56:38,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195017 states. [2018-10-27 03:56:41,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195017 to 194724. [2018-10-27 03:56:41,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194724 states. [2018-10-27 03:56:42,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194724 states to 194724 states and 256449 transitions. [2018-10-27 03:56:42,457 INFO L78 Accepts]: Start accepts. Automaton has 194724 states and 256449 transitions. Word has length 530 [2018-10-27 03:56:42,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 03:56:42,459 INFO L481 AbstractCegarLoop]: Abstraction has 194724 states and 256449 transitions. [2018-10-27 03:56:42,459 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 03:56:42,459 INFO L276 IsEmpty]: Start isEmpty. Operand 194724 states and 256449 transitions. [2018-10-27 03:56:42,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 638 [2018-10-27 03:56:42,492 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:56:42,493 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 03:56:42,493 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:56:42,493 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:56:42,494 INFO L82 PathProgramCache]: Analyzing trace with hash -1115290536, now seen corresponding path program 1 times [2018-10-27 03:56:42,494 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:56:42,495 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:56:42,495 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:56:42,495 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:56:42,495 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:56:42,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:56:44,694 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 03:56:44,694 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 03:56:44,694 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 03:56:44,695 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:56:44,696 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 03:56:44,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 03:56:44,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 03:56:44,696 INFO L87 Difference]: Start difference. First operand 194724 states and 256449 transitions. Second operand 4 states. Received shutdown request... [2018-10-27 03:57:00,027 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 03:57:00,028 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-27 03:57:00,034 WARN L205 ceAbstractionStarter]: Timeout [2018-10-27 03:57:00,035 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 03:57:00 BoogieIcfgContainer [2018-10-27 03:57:00,035 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 03:57:00,036 INFO L168 Benchmark]: Toolchain (without parser) took 232022.56 ms. Allocated memory was 1.5 GB in the beginning and 3.3 GB in the end (delta: 1.7 GB). Free memory was 1.4 GB in the beginning and 1.5 GB in the end (delta: -82.7 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2018-10-27 03:57:00,037 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. [2018-10-27 03:57:00,038 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3943.39 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 991.9 MB in the end (delta: 406.0 MB). Peak memory consumption was 406.0 MB. Max. memory is 7.1 GB. [2018-10-27 03:57:00,038 INFO L168 Benchmark]: Boogie Procedure Inliner took 808.76 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 841.0 MB). Free memory was 991.9 MB in the beginning and 2.2 GB in the end (delta: -1.3 GB). Peak memory consumption was 117.3 MB. Max. memory is 7.1 GB. [2018-10-27 03:57:00,039 INFO L168 Benchmark]: Boogie Preprocessor took 507.85 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 52.7 MB). Peak memory consumption was 52.7 MB. Max. memory is 7.1 GB. [2018-10-27 03:57:00,040 INFO L168 Benchmark]: RCFGBuilder took 17309.59 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 184.0 MB). Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 498.9 MB). Peak memory consumption was 682.9 MB. Max. memory is 7.1 GB. [2018-10-27 03:57:00,041 INFO L168 Benchmark]: TraceAbstraction took 209447.53 ms. Allocated memory was 2.6 GB in the beginning and 3.3 GB in the end (delta: 720.9 MB). Free memory was 1.7 GB in the beginning and 1.5 GB in the end (delta: 215.3 MB). Peak memory consumption was 936.2 MB. Max. memory is 7.1 GB. [2018-10-27 03:57:00,047 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 3943.39 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 991.9 MB in the end (delta: 406.0 MB). Peak memory consumption was 406.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 808.76 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 841.0 MB). Free memory was 991.9 MB in the beginning and 2.2 GB in the end (delta: -1.3 GB). Peak memory consumption was 117.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 507.85 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 52.7 MB). Peak memory consumption was 52.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 17309.59 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 184.0 MB). Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 498.9 MB). Peak memory consumption was 682.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 209447.53 ms. Allocated memory was 2.6 GB in the beginning and 3.3 GB in the end (delta: 720.9 MB). Free memory was 1.7 GB in the beginning and 1.5 GB in the end (delta: 215.3 MB). Peak memory consumption was 936.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 124]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 124). Cancelled while BasicCegarLoop was constructing difference of abstraction (194724states) and FLOYD_HOARE automaton (currently 4 states, 4 states before enhancement),while ReachableStatesComputation was computing reachable states (265932 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 1778 locations, 1 error locations. TIMEOUT Result, 209.3s OverallTime, 8 OverallIterations, 2 TraceHistogramMax, 192.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 7612 SDtfs, 48930 SDslu, 5444 SDs, 0 SdLazy, 77608 SolverSat, 20299 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 160.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 65 GetRequests, 22 SyntacticMatches, 3 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 2.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=194724occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 10.5s AutomataMinimizationTime, 7 MinimizatonAttempts, 4255 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.2s InterpolantComputationTime, 1920 NumberOfCodeBlocks, 1920 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 1912 ConstructedInterpolants, 0 QuantifiedInterpolants, 1306647 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 252/252 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown