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_label12_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 21:18:42,903 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 21:18:42,905 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 21:18:42,919 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 21:18:42,919 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 21:18:42,920 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 21:18:42,922 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 21:18:42,923 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 21:18:42,933 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 21:18:42,934 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 21:18:42,935 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 21:18:42,935 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 21:18:42,936 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 21:18:42,937 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 21:18:42,938 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 21:18:42,941 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 21:18:42,942 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 21:18:42,952 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 21:18:42,954 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 21:18:42,958 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 21:18:42,959 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 21:18:42,964 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 21:18:42,968 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 21:18:42,978 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 21:18:42,979 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 21:18:42,979 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 21:18:42,980 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 21:18:42,980 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 [2018-10-24 21:18:43,010 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 21:18:43,010 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 21:18:43,012 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 21:18:43,012 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 21:18:43,012 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 21:18:43,012 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 21:18:43,013 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 21:18:43,013 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 21:18:43,013 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 21:18:43,013 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 21:18:43,013 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 21:18:43,014 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 21:18:43,014 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 21:18:43,015 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 21:18:43,015 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 21:18:43,015 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 21:18:43,015 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 21:18:43,015 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 21:18:43,017 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 21:18:43,017 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 21:18:43,017 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 21:18:43,017 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 21:18:43,018 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 21:18:43,018 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 21:18:43,018 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 21:18:43,019 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 21:18:43,019 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 21:18:43,019 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 21:18:43,019 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 21:18:43,019 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 21:18:43,020 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 21:18:43,020 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 21:18:43,020 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 21:18:43,020 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 21:18:43,088 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 21:18:43,105 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 21:18:43,109 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 21:18:43,110 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 21:18:43,111 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 21:18:43,112 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label12_true-unreach-call.c [2018-10-24 21:18:43,179 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/00b30aac4/306458ef74914c4cb2dbbdddf9aa4421/FLAG0c7821d5e [2018-10-24 21:18:43,879 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 21:18:43,880 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label12_true-unreach-call.c [2018-10-24 21:18:43,915 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/00b30aac4/306458ef74914c4cb2dbbdddf9aa4421/FLAG0c7821d5e [2018-10-24 21:18:43,931 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/00b30aac4/306458ef74914c4cb2dbbdddf9aa4421 [2018-10-24 21:18:43,943 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 21:18:43,945 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 21:18:43,946 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 21:18:43,946 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 21:18:43,951 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 21:18:43,952 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:18:43" (1/1) ... [2018-10-24 21:18:43,955 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@441f49ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:18:43, skipping insertion in model container [2018-10-24 21:18:43,956 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:18:43" (1/1) ... [2018-10-24 21:18:43,967 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 21:18:44,109 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 21:18:45,251 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:18:45,255 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 21:18:45,862 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:18:45,896 INFO L193 MainTranslator]: Completed translation [2018-10-24 21:18:45,896 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:18:45 WrapperNode [2018-10-24 21:18:45,897 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 21:18:45,898 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 21:18:45,898 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 21:18:45,898 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 21:18:45,908 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:18:45" (1/1) ... [2018-10-24 21:18:45,979 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:18:45" (1/1) ... [2018-10-24 21:18:46,385 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 21:18:46,385 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 21:18:46,385 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 21:18:46,386 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 21:18:46,397 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:18:45" (1/1) ... [2018-10-24 21:18:46,397 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:18:45" (1/1) ... [2018-10-24 21:18:46,433 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:18:45" (1/1) ... [2018-10-24 21:18:46,434 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:18:45" (1/1) ... [2018-10-24 21:18:46,568 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:18:45" (1/1) ... [2018-10-24 21:18:46,613 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:18:45" (1/1) ... [2018-10-24 21:18:46,671 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:18:45" (1/1) ... [2018-10-24 21:18:46,726 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 21:18:46,726 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 21:18:46,727 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 21:18:46,727 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 21:18:46,728 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:18:45" (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 [2018-10-24 21:18:46,799 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 21:18:46,800 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 21:18:46,800 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-24 21:18:46,800 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-24 21:18:46,800 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-24 21:18:46,801 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-24 21:18:46,801 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 21:18:46,801 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 21:18:46,801 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 21:18:46,801 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 21:18:46,802 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 21:18:46,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 21:18:46,802 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 21:18:46,805 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 21:18:58,189 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 21:18:58,189 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:18:58 BoogieIcfgContainer [2018-10-24 21:18:58,190 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 21:18:58,191 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 21:18:58,191 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 21:18:58,194 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 21:18:58,194 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 09:18:43" (1/3) ... [2018-10-24 21:18:58,195 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d94f36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:18:58, skipping insertion in model container [2018-10-24 21:18:58,195 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:18:45" (2/3) ... [2018-10-24 21:18:58,196 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d94f36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:18:58, skipping insertion in model container [2018-10-24 21:18:58,196 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:18:58" (3/3) ... [2018-10-24 21:18:58,198 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label12_true-unreach-call.c [2018-10-24 21:18:58,208 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 21:18:58,217 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 21:18:58,234 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 21:18:58,280 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 21:18:58,281 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 21:18:58,281 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 21:18:58,281 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 21:18:58,281 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 21:18:58,281 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 21:18:58,282 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 21:18:58,282 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 21:18:58,320 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-10-24 21:18:58,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2018-10-24 21:18:58,330 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:18:58,331 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] [2018-10-24 21:18:58,333 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:18:58,339 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:18:58,340 INFO L82 PathProgramCache]: Analyzing trace with hash -653168765, now seen corresponding path program 1 times [2018-10-24 21:18:58,342 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:18:58,395 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:18:58,395 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:18:58,396 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:18:58,396 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:18:58,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:18:58,882 WARN L179 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 21:18:59,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:18:59,069 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:18:59,070 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 21:18:59,070 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:18:59,081 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 21:18:59,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 21:18:59,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 21:18:59,102 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 3 states. [2018-10-24 21:19:06,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:19:06,241 INFO L93 Difference]: Finished difference Result 2446 states and 4700 transitions. [2018-10-24 21:19:06,242 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 21:19:06,243 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 65 [2018-10-24 21:19:06,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:19:06,287 INFO L225 Difference]: With dead ends: 2446 [2018-10-24 21:19:06,287 INFO L226 Difference]: Without dead ends: 1604 [2018-10-24 21:19:06,301 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 21:19:06,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2018-10-24 21:19:06,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1604. [2018-10-24 21:19:06,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-10-24 21:19:06,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 2909 transitions. [2018-10-24 21:19:06,479 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 2909 transitions. Word has length 65 [2018-10-24 21:19:06,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:19:06,480 INFO L481 AbstractCegarLoop]: Abstraction has 1604 states and 2909 transitions. [2018-10-24 21:19:06,480 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 21:19:06,480 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 2909 transitions. [2018-10-24 21:19:06,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2018-10-24 21:19:06,491 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:19:06,492 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:19:06,492 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:19:06,493 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:19:06,493 INFO L82 PathProgramCache]: Analyzing trace with hash 1735878332, now seen corresponding path program 1 times [2018-10-24 21:19:06,493 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:19:06,494 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:19:06,494 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:19:06,495 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:19:06,495 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:19:06,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:19:06,792 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:19:06,792 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:19:06,792 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 21:19:06,793 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:19:06,795 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 21:19:06,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 21:19:06,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 21:19:06,796 INFO L87 Difference]: Start difference. First operand 1604 states and 2909 transitions. Second operand 5 states. [2018-10-24 21:19:18,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:19:18,176 INFO L93 Difference]: Finished difference Result 4818 states and 8826 transitions. [2018-10-24 21:19:18,179 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 21:19:18,179 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 139 [2018-10-24 21:19:18,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:19:18,201 INFO L225 Difference]: With dead ends: 4818 [2018-10-24 21:19:18,201 INFO L226 Difference]: Without dead ends: 3220 [2018-10-24 21:19:18,208 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 21:19:18,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3220 states. [2018-10-24 21:19:18,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3220 to 3186. [2018-10-24 21:19:18,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3186 states. [2018-10-24 21:19:18,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3186 states to 3186 states and 5594 transitions. [2018-10-24 21:19:18,311 INFO L78 Accepts]: Start accepts. Automaton has 3186 states and 5594 transitions. Word has length 139 [2018-10-24 21:19:18,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:19:18,312 INFO L481 AbstractCegarLoop]: Abstraction has 3186 states and 5594 transitions. [2018-10-24 21:19:18,312 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 21:19:18,312 INFO L276 IsEmpty]: Start isEmpty. Operand 3186 states and 5594 transitions. [2018-10-24 21:19:18,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-10-24 21:19:18,315 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:19:18,316 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:19:18,316 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:19:18,316 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:19:18,316 INFO L82 PathProgramCache]: Analyzing trace with hash 2022768053, now seen corresponding path program 1 times [2018-10-24 21:19:18,316 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:19:18,317 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:19:18,318 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:19:18,318 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:19:18,318 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:19:18,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:19:18,572 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:19:18,573 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:19:18,573 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 21:19:18,573 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:19:18,574 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 21:19:18,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 21:19:18,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 21:19:18,575 INFO L87 Difference]: Start difference. First operand 3186 states and 5594 transitions. Second operand 6 states. [2018-10-24 21:19:30,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:19:30,677 INFO L93 Difference]: Finished difference Result 11148 states and 19850 transitions. [2018-10-24 21:19:30,678 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 21:19:30,678 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 144 [2018-10-24 21:19:30,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:19:30,723 INFO L225 Difference]: With dead ends: 11148 [2018-10-24 21:19:30,723 INFO L226 Difference]: Without dead ends: 7968 [2018-10-24 21:19:30,740 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 21:19:30,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7968 states. [2018-10-24 21:19:30,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7968 to 7924. [2018-10-24 21:19:30,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7924 states. [2018-10-24 21:19:30,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7924 states to 7924 states and 13424 transitions. [2018-10-24 21:19:30,947 INFO L78 Accepts]: Start accepts. Automaton has 7924 states and 13424 transitions. Word has length 144 [2018-10-24 21:19:30,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:19:30,948 INFO L481 AbstractCegarLoop]: Abstraction has 7924 states and 13424 transitions. [2018-10-24 21:19:30,948 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 21:19:30,948 INFO L276 IsEmpty]: Start isEmpty. Operand 7924 states and 13424 transitions. [2018-10-24 21:19:30,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2018-10-24 21:19:30,951 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:19:30,952 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:19:30,952 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:19:30,952 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:19:30,953 INFO L82 PathProgramCache]: Analyzing trace with hash 1110461253, now seen corresponding path program 1 times [2018-10-24 21:19:30,953 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:19:30,954 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:19:30,954 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:19:30,954 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:19:30,954 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:19:30,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:19:31,246 WARN L179 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 21:19:31,615 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:19:31,615 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:19:31,616 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 21:19:31,616 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:19:31,616 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 21:19:31,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 21:19:31,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 21:19:31,617 INFO L87 Difference]: Start difference. First operand 7924 states and 13424 transitions. Second operand 6 states. [2018-10-24 21:19:42,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:19:42,674 INFO L93 Difference]: Finished difference Result 22224 states and 38004 transitions. [2018-10-24 21:19:42,674 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 21:19:42,674 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 152 [2018-10-24 21:19:42,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:19:42,739 INFO L225 Difference]: With dead ends: 22224 [2018-10-24 21:19:42,739 INFO L226 Difference]: Without dead ends: 14306 [2018-10-24 21:19:42,781 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 [2018-10-24 21:19:42,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14306 states. [2018-10-24 21:19:43,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14306 to 14219. [2018-10-24 21:19:43,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14219 states. [2018-10-24 21:19:43,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14219 states to 14219 states and 21550 transitions. [2018-10-24 21:19:43,138 INFO L78 Accepts]: Start accepts. Automaton has 14219 states and 21550 transitions. Word has length 152 [2018-10-24 21:19:43,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:19:43,138 INFO L481 AbstractCegarLoop]: Abstraction has 14219 states and 21550 transitions. [2018-10-24 21:19:43,138 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 21:19:43,139 INFO L276 IsEmpty]: Start isEmpty. Operand 14219 states and 21550 transitions. [2018-10-24 21:19:43,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2018-10-24 21:19:43,146 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:19:43,146 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:19:43,146 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:19:43,147 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:19:43,147 INFO L82 PathProgramCache]: Analyzing trace with hash -1126931720, now seen corresponding path program 1 times [2018-10-24 21:19:43,147 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:19:43,148 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:19:43,148 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:19:43,148 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:19:43,149 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:19:43,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:19:43,429 WARN L179 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 21:19:43,531 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:19:43,532 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:19:43,532 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 21:19:43,532 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:19:43,533 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 21:19:43,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 21:19:43,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 21:19:43,533 INFO L87 Difference]: Start difference. First operand 14219 states and 21550 transitions. Second operand 6 states. [2018-10-24 21:19:55,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:19:55,632 INFO L93 Difference]: Finished difference Result 35956 states and 55845 transitions. [2018-10-24 21:19:55,634 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 21:19:55,634 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 185 [2018-10-24 21:19:55,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:19:55,719 INFO L225 Difference]: With dead ends: 35956 [2018-10-24 21:19:55,719 INFO L226 Difference]: Without dead ends: 21743 [2018-10-24 21:19:55,791 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 [2018-10-24 21:19:55,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21743 states. [2018-10-24 21:19:56,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21743 to 21651. [2018-10-24 21:19:56,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21651 states. [2018-10-24 21:19:56,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21651 states to 21651 states and 30247 transitions. [2018-10-24 21:19:56,254 INFO L78 Accepts]: Start accepts. Automaton has 21651 states and 30247 transitions. Word has length 185 [2018-10-24 21:19:56,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:19:56,254 INFO L481 AbstractCegarLoop]: Abstraction has 21651 states and 30247 transitions. [2018-10-24 21:19:56,254 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 21:19:56,255 INFO L276 IsEmpty]: Start isEmpty. Operand 21651 states and 30247 transitions. [2018-10-24 21:19:56,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2018-10-24 21:19:56,271 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:19:56,271 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:19:56,271 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:19:56,272 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:19:56,272 INFO L82 PathProgramCache]: Analyzing trace with hash 1082582744, now seen corresponding path program 1 times [2018-10-24 21:19:56,272 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:19:56,273 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:19:56,273 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:19:56,273 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:19:56,273 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:19:56,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:19:56,980 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 119 proven. 67 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-10-24 21:19:56,981 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:19:56,981 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:19:56,982 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 237 with the following transitions: [2018-10-24 21:19:56,987 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], [2287], [2289], [2292], [2300], [2308], [2316], [2324], [2332], [2340], [2348], [2356], [2361], [2365], [2369], [2373], [2377], [2381], [2384], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2460], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-10-24 21:19:57,081 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:19:57,081 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 21:20:03,842 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 21:20:03,844 INFO L272 AbstractInterpreter]: Visited 103 different actions 199 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-10-24 21:20:03,865 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:20:03,865 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 21:20:07,510 INFO L232 lantSequenceWeakener]: Weakened 137 states. On average, predicates are now at 76.73% of their original sizes. [2018-10-24 21:20:07,511 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 21:20:23,445 INFO L413 sIntCurrentIteration]: We have 235 unified AI predicates [2018-10-24 21:20:23,445 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 21:20:23,446 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 21:20:23,446 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [23] imperfect sequences [6] total 27 [2018-10-24 21:20:23,446 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:20:23,447 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-10-24 21:20:23,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-10-24 21:20:23,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=377, Unknown=0, NotChecked=0, Total=506 [2018-10-24 21:20:23,448 INFO L87 Difference]: Start difference. First operand 21651 states and 30247 transitions. Second operand 23 states. [2018-10-24 21:20:58,800 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-10-24 21:22:33,476 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-24 21:22:33,477 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 21:22:33,482 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 21:22:33,482 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 09:22:33 BoogieIcfgContainer [2018-10-24 21:22:33,482 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 21:22:33,483 INFO L168 Benchmark]: Toolchain (without parser) took 229539.49 ms. Allocated memory was 1.5 GB in the beginning and 4.3 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 3.7 GB in the end (delta: -2.2 GB). Peak memory consumption was 502.2 MB. Max. memory is 7.1 GB. [2018-10-24 21:22:33,484 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. [2018-10-24 21:22:33,485 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1951.33 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. [2018-10-24 21:22:33,486 INFO L168 Benchmark]: Boogie Procedure Inliner took 487.07 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 825.8 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 68.9 MB. Max. memory is 7.1 GB. [2018-10-24 21:22:33,487 INFO L168 Benchmark]: Boogie Preprocessor took 340.78 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: 35.6 MB). Peak memory consumption was 35.6 MB. Max. memory is 7.1 GB. [2018-10-24 21:22:33,488 INFO L168 Benchmark]: RCFGBuilder took 11463.44 ms. Allocated memory was 2.4 GB in the beginning and 2.5 GB in the end (delta: 155.2 MB). Free memory was 2.3 GB in the beginning and 2.4 GB in the end (delta: -139.7 MB). Peak memory consumption was 656.8 MB. Max. memory is 7.1 GB. [2018-10-24 21:22:33,489 INFO L168 Benchmark]: TraceAbstraction took 215291.52 ms. Allocated memory was 2.5 GB in the beginning and 4.3 GB in the end (delta: 1.8 GB). Free memory was 2.4 GB in the beginning and 3.7 GB in the end (delta: -1.3 GB). Peak memory consumption was 489.6 MB. Max. memory is 7.1 GB. [2018-10-24 21:22:33,494 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 1951.33 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 487.07 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 825.8 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 68.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 340.78 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: 35.6 MB). Peak memory consumption was 35.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 11463.44 ms. Allocated memory was 2.4 GB in the beginning and 2.5 GB in the end (delta: 155.2 MB). Free memory was 2.3 GB in the beginning and 2.4 GB in the end (delta: -139.7 MB). Peak memory consumption was 656.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 215291.52 ms. Allocated memory was 2.5 GB in the beginning and 4.3 GB in the end (delta: 1.8 GB). Free memory was 2.4 GB in the beginning and 3.7 GB in the end (delta: -1.3 GB). Peak memory consumption was 489.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 186]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 186). Cancelled while BasicCegarLoop was constructing difference of abstraction (21651states) and FLOYD_HOARE automaton (currently 17 states, 23 states before enhancement),while ReachableStatesComputation was computing reachable states (3357 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 840 locations, 1 error locations. TIMEOUT Result, 215.2s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 184.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 776 SDtfs, 17766 SDslu, 677 SDs, 0 SdLazy, 27875 SolverSat, 6758 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 106.4s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 286 GetRequests, 221 SyntacticMatches, 9 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 20.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21651occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 6.8s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9952078559738133 AbsIntWeakeningRatio, 0.1148936170212766 AbsIntAvgWeakeningVarsNumRemoved, 534.2851063829787 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.2s AutomataMinimizationTime, 5 MinimizatonAttempts, 257 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 921 NumberOfCodeBlocks, 921 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 915 ConstructedInterpolants, 0 QuantifiedInterpolants, 665011 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 5 PerfectInterpolantSequences, 357/424 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown