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/Problem12_label31_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 02:45:33,941 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 02:45:33,945 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 02:45:33,957 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 02:45:33,957 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 02:45:33,958 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 02:45:33,960 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 02:45:33,961 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 02:45:33,963 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 02:45:33,964 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 02:45:33,965 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 02:45:33,965 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 02:45:33,966 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 02:45:33,967 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 02:45:33,969 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 02:45:33,969 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 02:45:33,970 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 02:45:33,972 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 02:45:33,974 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 02:45:33,976 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 02:45:33,977 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 02:45:33,978 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 02:45:33,981 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-27 02:45:33,987 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 02:45:33,988 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 02:45:33,989 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 02:45:33,989 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 02:45:33,990 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 02:45:34,005 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 02:45:34,006 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 02:45:34,007 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 02:45:34,007 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 02:45:34,007 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 02:45:34,008 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 02:45:34,008 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 02:45:34,008 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 02:45:34,008 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 02:45:34,008 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 02:45:34,009 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 02:45:34,009 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 02:45:34,010 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 02:45:34,010 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 02:45:34,010 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 02:45:34,010 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 02:45:34,010 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 02:45:34,011 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 02:45:34,011 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 02:45:34,011 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 02:45:34,011 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 02:45:34,011 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 02:45:34,012 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 02:45:34,012 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 02:45:34,012 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 02:45:34,012 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 02:45:34,012 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 02:45:34,013 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 02:45:34,013 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 02:45:34,013 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 02:45:34,013 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 02:45:34,013 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 02:45:34,014 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 02:45:34,014 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 02:45:34,060 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 02:45:34,074 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 02:45:34,078 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 02:45:34,080 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 02:45:34,080 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 02:45:34,081 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label31_true-unreach-call.c [2018-10-27 02:45:34,141 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/e0e0e0dfb/2fd36888365c466ea0d35f41af032888/FLAGfb9ad4607 [2018-10-27 02:45:34,864 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 02:45:34,865 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label31_true-unreach-call.c [2018-10-27 02:45:34,901 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/e0e0e0dfb/2fd36888365c466ea0d35f41af032888/FLAGfb9ad4607 [2018-10-27 02:45:34,923 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/e0e0e0dfb/2fd36888365c466ea0d35f41af032888 [2018-10-27 02:45:34,939 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 02:45:34,942 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 02:45:34,943 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 02:45:34,943 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 02:45:34,951 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 02:45:34,952 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:45:34" (1/1) ... [2018-10-27 02:45:34,956 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ccd8a6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:45:34, skipping insertion in model container [2018-10-27 02:45:34,956 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:45:34" (1/1) ... [2018-10-27 02:45:34,969 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 02:45:35,157 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 02:45:36,530 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 02:45:36,534 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 02:45:37,139 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 02:45:37,175 INFO L193 MainTranslator]: Completed translation [2018-10-27 02:45:37,175 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:45:37 WrapperNode [2018-10-27 02:45:37,176 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 02:45:37,177 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 02:45:37,177 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 02:45:37,177 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 02:45:37,188 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:45:37" (1/1) ... [2018-10-27 02:45:37,259 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:45:37" (1/1) ... [2018-10-27 02:45:37,668 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 02:45:37,668 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 02:45:37,669 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 02:45:37,669 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 02:45:37,681 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:45:37" (1/1) ... [2018-10-27 02:45:37,681 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:45:37" (1/1) ... [2018-10-27 02:45:37,710 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:45:37" (1/1) ... [2018-10-27 02:45:37,710 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:45:37" (1/1) ... [2018-10-27 02:45:37,849 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:45:37" (1/1) ... [2018-10-27 02:45:37,893 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:45:37" (1/1) ... [2018-10-27 02:45:37,950 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:45:37" (1/1) ... [2018-10-27 02:45:37,991 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 02:45:37,992 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 02:45:37,992 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 02:45:37,992 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 02:45:37,993 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:45:37" (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 02:45:38,065 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 02:45:38,065 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 02:45:38,066 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-27 02:45:38,066 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-27 02:45:38,066 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-27 02:45:38,066 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-27 02:45:38,067 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 02:45:38,067 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 02:45:38,067 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 02:45:38,067 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 02:45:38,068 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 02:45:38,069 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 02:45:38,069 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 02:45:38,070 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 02:45:50,611 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 02:45:50,612 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:45:50 BoogieIcfgContainer [2018-10-27 02:45:50,612 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 02:45:50,613 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 02:45:50,613 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 02:45:50,617 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 02:45:50,617 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 02:45:34" (1/3) ... [2018-10-27 02:45:50,618 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20c5dc79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:45:50, skipping insertion in model container [2018-10-27 02:45:50,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:45:37" (2/3) ... [2018-10-27 02:45:50,618 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20c5dc79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:45:50, skipping insertion in model container [2018-10-27 02:45:50,619 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:45:50" (3/3) ... [2018-10-27 02:45:50,620 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label31_true-unreach-call.c [2018-10-27 02:45:50,631 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 02:45:50,649 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 02:45:50,669 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 02:45:50,717 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 02:45:50,717 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 02:45:50,718 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 02:45:50,718 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 02:45:50,718 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 02:45:50,718 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 02:45:50,718 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 02:45:50,718 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 02:45:50,759 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-10-27 02:45:50,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-10-27 02:45:50,772 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 02:45:50,773 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 02:45:50,776 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 02:45:50,784 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 02:45:50,784 INFO L82 PathProgramCache]: Analyzing trace with hash -621967516, now seen corresponding path program 1 times [2018-10-27 02:45:50,788 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 02:45:50,857 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:45:50,858 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 02:45:50,858 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:45:50,858 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 02:45:50,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 02:45:51,308 WARN L179 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 02:45:51,507 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 02:45:51,509 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 02:45:51,510 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 02:45:51,510 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 02:45:51,520 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 02:45:51,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 02:45:51,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 02:45:51,545 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 3 states. [2018-10-27 02:46:00,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 02:46:00,239 INFO L93 Difference]: Finished difference Result 2446 states and 4700 transitions. [2018-10-27 02:46:00,239 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 02:46:00,241 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 70 [2018-10-27 02:46:00,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 02:46:00,288 INFO L225 Difference]: With dead ends: 2446 [2018-10-27 02:46:00,288 INFO L226 Difference]: Without dead ends: 1604 [2018-10-27 02:46:00,299 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 02:46:00,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2018-10-27 02:46:00,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1604. [2018-10-27 02:46:00,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-10-27 02:46:00,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 3021 transitions. [2018-10-27 02:46:00,474 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 3021 transitions. Word has length 70 [2018-10-27 02:46:00,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 02:46:00,475 INFO L481 AbstractCegarLoop]: Abstraction has 1604 states and 3021 transitions. [2018-10-27 02:46:00,475 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 02:46:00,476 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 3021 transitions. [2018-10-27 02:46:00,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-10-27 02:46:00,489 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 02:46:00,489 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, 2, 2, 2, 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] [2018-10-27 02:46:00,490 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 02:46:00,490 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 02:46:00,491 INFO L82 PathProgramCache]: Analyzing trace with hash -1190970174, now seen corresponding path program 1 times [2018-10-27 02:46:00,491 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 02:46:00,492 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:46:00,493 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 02:46:00,493 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:46:00,493 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 02:46:00,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 02:46:00,826 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 02:46:00,827 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 02:46:00,827 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 02:46:00,827 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 02:46:00,829 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 02:46:00,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 02:46:00,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 02:46:00,830 INFO L87 Difference]: Start difference. First operand 1604 states and 3021 transitions. Second operand 6 states. [2018-10-27 02:46:22,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 02:46:22,683 INFO L93 Difference]: Finished difference Result 6330 states and 12128 transitions. [2018-10-27 02:46:22,683 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 02:46:22,684 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 148 [2018-10-27 02:46:22,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 02:46:22,721 INFO L225 Difference]: With dead ends: 6330 [2018-10-27 02:46:22,721 INFO L226 Difference]: Without dead ends: 4732 [2018-10-27 02:46:22,731 INFO L605 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 [2018-10-27 02:46:22,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4732 states. [2018-10-27 02:46:22,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4732 to 4700. [2018-10-27 02:46:22,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4700 states. [2018-10-27 02:46:22,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4700 states to 4700 states and 7674 transitions. [2018-10-27 02:46:22,885 INFO L78 Accepts]: Start accepts. Automaton has 4700 states and 7674 transitions. Word has length 148 [2018-10-27 02:46:22,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 02:46:22,886 INFO L481 AbstractCegarLoop]: Abstraction has 4700 states and 7674 transitions. [2018-10-27 02:46:22,886 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 02:46:22,887 INFO L276 IsEmpty]: Start isEmpty. Operand 4700 states and 7674 transitions. [2018-10-27 02:46:22,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2018-10-27 02:46:22,902 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 02:46:22,903 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, 2, 2, 2, 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] [2018-10-27 02:46:22,903 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 02:46:22,904 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 02:46:22,904 INFO L82 PathProgramCache]: Analyzing trace with hash -1674946466, now seen corresponding path program 1 times [2018-10-27 02:46:22,904 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 02:46:22,907 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:46:22,907 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 02:46:22,907 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:46:22,907 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 02:46:22,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 02:46:23,138 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 02:46:23,139 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 02:46:23,139 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-27 02:46:23,139 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 02:46:23,140 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 02:46:23,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 02:46:23,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-10-27 02:46:23,141 INFO L87 Difference]: Start difference. First operand 4700 states and 7674 transitions. Second operand 5 states. [2018-10-27 02:46:32,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 02:46:32,527 INFO L93 Difference]: Finished difference Result 14300 states and 23670 transitions. [2018-10-27 02:46:32,532 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-27 02:46:32,533 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 150 [2018-10-27 02:46:32,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 02:46:32,588 INFO L225 Difference]: With dead ends: 14300 [2018-10-27 02:46:32,588 INFO L226 Difference]: Without dead ends: 9606 [2018-10-27 02:46:32,604 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 02:46:32,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9606 states. [2018-10-27 02:46:32,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9606 to 9524. [2018-10-27 02:46:32,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9524 states. [2018-10-27 02:46:32,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9524 states to 9524 states and 14353 transitions. [2018-10-27 02:46:32,891 INFO L78 Accepts]: Start accepts. Automaton has 9524 states and 14353 transitions. Word has length 150 [2018-10-27 02:46:32,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 02:46:32,892 INFO L481 AbstractCegarLoop]: Abstraction has 9524 states and 14353 transitions. [2018-10-27 02:46:32,892 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 02:46:32,892 INFO L276 IsEmpty]: Start isEmpty. Operand 9524 states and 14353 transitions. [2018-10-27 02:46:32,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2018-10-27 02:46:32,897 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 02:46:32,901 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, 2, 2, 2, 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] [2018-10-27 02:46:32,902 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 02:46:32,902 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 02:46:32,902 INFO L82 PathProgramCache]: Analyzing trace with hash -170361029, now seen corresponding path program 1 times [2018-10-27 02:46:32,902 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 02:46:32,903 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:46:32,903 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 02:46:32,904 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:46:32,904 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 02:46:32,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 02:46:33,124 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 02:46:33,125 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 02:46:33,125 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 02:46:33,125 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 02:46:33,126 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 02:46:33,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 02:46:33,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-27 02:46:33,126 INFO L87 Difference]: Start difference. First operand 9524 states and 14353 transitions. Second operand 6 states. [2018-10-27 02:46:52,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 02:46:52,067 INFO L93 Difference]: Finished difference Result 38073 states and 60988 transitions. [2018-10-27 02:46:52,068 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 02:46:52,068 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 161 [2018-10-27 02:46:52,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 02:46:52,240 INFO L225 Difference]: With dead ends: 38073 [2018-10-27 02:46:52,240 INFO L226 Difference]: Without dead ends: 28555 [2018-10-27 02:46:52,322 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-27 02:46:52,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28555 states. [2018-10-27 02:46:52,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28555 to 28503. [2018-10-27 02:46:52,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28503 states. [2018-10-27 02:46:53,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28503 states to 28503 states and 41645 transitions. [2018-10-27 02:46:53,082 INFO L78 Accepts]: Start accepts. Automaton has 28503 states and 41645 transitions. Word has length 161 [2018-10-27 02:46:53,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 02:46:53,083 INFO L481 AbstractCegarLoop]: Abstraction has 28503 states and 41645 transitions. [2018-10-27 02:46:53,083 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 02:46:53,083 INFO L276 IsEmpty]: Start isEmpty. Operand 28503 states and 41645 transitions. [2018-10-27 02:46:53,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2018-10-27 02:46:53,089 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 02:46:53,089 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, 2, 2, 2, 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] [2018-10-27 02:46:53,089 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 02:46:53,090 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 02:46:53,090 INFO L82 PathProgramCache]: Analyzing trace with hash 1634908119, now seen corresponding path program 1 times [2018-10-27 02:46:53,090 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 02:46:53,091 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:46:53,091 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 02:46:53,091 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:46:53,091 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 02:46:53,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 02:46:53,378 WARN L179 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 02:46:53,825 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 02:46:53,825 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 02:46:53,826 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 02:46:53,826 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 02:46:53,827 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 02:46:53,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 02:46:53,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 02:46:53,827 INFO L87 Difference]: Start difference. First operand 28503 states and 41645 transitions. Second operand 6 states. [2018-10-27 02:47:10,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 02:47:10,794 INFO L93 Difference]: Finished difference Result 76148 states and 117566 transitions. [2018-10-27 02:47:10,797 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-27 02:47:10,797 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 195 [2018-10-27 02:47:10,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 02:47:11,050 INFO L225 Difference]: With dead ends: 76148 [2018-10-27 02:47:11,050 INFO L226 Difference]: Without dead ends: 47651 [2018-10-27 02:47:11,164 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 02:47:11,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47651 states. [2018-10-27 02:47:12,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47651 to 47489. [2018-10-27 02:47:12,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47489 states. [2018-10-27 02:47:12,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47489 states to 47489 states and 66709 transitions. [2018-10-27 02:47:12,728 INFO L78 Accepts]: Start accepts. Automaton has 47489 states and 66709 transitions. Word has length 195 [2018-10-27 02:47:12,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 02:47:12,729 INFO L481 AbstractCegarLoop]: Abstraction has 47489 states and 66709 transitions. [2018-10-27 02:47:12,731 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 02:47:12,731 INFO L276 IsEmpty]: Start isEmpty. Operand 47489 states and 66709 transitions. [2018-10-27 02:47:12,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2018-10-27 02:47:12,738 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 02:47:12,738 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, 2, 2, 2, 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] [2018-10-27 02:47:12,739 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 02:47:12,739 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 02:47:12,739 INFO L82 PathProgramCache]: Analyzing trace with hash -1213968518, now seen corresponding path program 1 times [2018-10-27 02:47:12,739 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 02:47:12,740 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:47:12,740 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 02:47:12,741 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:47:12,741 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 02:47:12,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 02:47:13,071 WARN L179 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 02:47:13,166 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-27 02:47:13,167 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 02:47:13,167 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 02:47:13,168 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 217 with the following transitions: [2018-10-27 02:47:13,170 INFO L202 CegarAbsIntRunner]: [0], [1], [1868], [1875], [1883], [1891], [1899], [1907], [1915], [1923], [1931], [1939], [1947], [1955], [1963], [1971], [1979], [1987], [1995], [2003], [2011], [2019], [2027], [2035], [2043], [2051], [2059], [2067], [2075], [2083], [2091], [2099], [2107], [2115], [2123], [2131], [2139], [2147], [2155], [2163], [2171], [2179], [2187], [2195], [2203], [2211], [2219], [2227], [2235], [2243], [2251], [2259], [2267], [2275], [2283], [2291], [2299], [2307], [2315], [2323], [2327], [2329], [2332], [2340], [2348], [2356], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2585], [2589], [2593], [2597], [2601], [2605], [2609], [2613], [2617], [2621], [2625], [2629], [2633], [2637], [2641], [2645], [2649], [2653], [2657], [2661], [2664], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-10-27 02:47:13,247 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-27 02:47:13,248 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 02:47:18,289 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-27 02:47:42,683 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 02:47:42,684 INFO L272 AbstractInterpreter]: Visited 153 different actions 446 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-10-27 02:47:42,705 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 02:47:42,705 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 02:47:47,641 INFO L227 lantSequenceWeakener]: Weakened 109 states. On average, predicates are now at 77.54% of their original sizes. [2018-10-27 02:47:47,642 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 02:47:59,420 INFO L415 sIntCurrentIteration]: We unified 215 AI predicates to 215 [2018-10-27 02:47:59,420 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 02:47:59,421 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 02:47:59,421 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [4] total 20 [2018-10-27 02:47:59,422 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 02:47:59,422 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-27 02:47:59,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-27 02:47:59,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2018-10-27 02:47:59,423 INFO L87 Difference]: Start difference. First operand 47489 states and 66709 transitions. Second operand 18 states. Received shutdown request... [2018-10-27 02:49:22,443 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-27 02:49:22,444 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-27 02:49:22,450 WARN L205 ceAbstractionStarter]: Timeout [2018-10-27 02:49:22,450 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 02:49:22 BoogieIcfgContainer [2018-10-27 02:49:22,451 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 02:49:22,452 INFO L168 Benchmark]: Toolchain (without parser) took 227510.81 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 2.8 GB in the end (delta: -1.4 GB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. [2018-10-27 02:49:22,461 INFO L168 Benchmark]: CDTParser took 0.20 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 02:49:22,462 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2232.81 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. [2018-10-27 02:49:22,462 INFO L168 Benchmark]: Boogie Procedure Inliner took 491.41 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 793.2 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 58.3 MB. Max. memory is 7.1 GB. [2018-10-27 02:49:22,463 INFO L168 Benchmark]: Boogie Preprocessor took 322.90 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 35.9 MB). Peak memory consumption was 35.9 MB. Max. memory is 7.1 GB. [2018-10-27 02:49:22,466 INFO L168 Benchmark]: RCFGBuilder took 12620.64 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 181.4 MB). Free memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: -186.1 MB). Peak memory consumption was 668.8 MB. Max. memory is 7.1 GB. [2018-10-27 02:49:22,467 INFO L168 Benchmark]: TraceAbstraction took 211837.45 ms. Allocated memory was 2.5 GB in the beginning and 4.2 GB in the end (delta: 1.7 GB). Free memory was 2.4 GB in the beginning and 2.8 GB in the end (delta: -389.7 MB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. [2018-10-27 02:49:22,476 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 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 2232.81 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 491.41 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 793.2 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 58.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 322.90 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 35.9 MB). Peak memory consumption was 35.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 12620.64 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 181.4 MB). Free memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: -186.1 MB). Peak memory consumption was 668.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 211837.45 ms. Allocated memory was 2.5 GB in the beginning and 4.2 GB in the end (delta: 1.7 GB). Free memory was 2.4 GB in the beginning and 2.8 GB in the end (delta: -389.7 MB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 201]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 201). Cancelled while BasicCegarLoop was constructing difference of abstraction (47489states) and FLOYD_HOARE automaton (currently 15 states, 18 states before enhancement),while ReachableStatesComputation was computing reachable states (1665 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 840 locations, 1 error locations. TIMEOUT Result, 211.7s OverallTime, 6 OverallIterations, 2 TraceHistogramMax, 159.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 710 SDtfs, 19430 SDslu, 784 SDs, 0 SdLazy, 27504 SolverSat, 6296 SolverUnsat, 6 SolverUnknown, 0 SolverNotchecked, 87.1s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 266 GetRequests, 207 SyntacticMatches, 9 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 16.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=47489occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 29.5s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9958568872987476 AbsIntWeakeningRatio, 0.09767441860465116 AbsIntAvgWeakeningVarsNumRemoved, 17.98139534883721 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 2.9s AutomataMinimizationTime, 5 MinimizatonAttempts, 328 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 940 NumberOfCodeBlocks, 940 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 934 ConstructedInterpolants, 0 QuantifiedInterpolants, 655188 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 5 PerfectInterpolantSequences, 256/315 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown