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/Problem16_label14_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 18:44:55,806 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 18:44:55,808 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 18:44:55,821 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 18:44:55,821 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 18:44:55,822 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 18:44:55,824 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 18:44:55,825 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 18:44:55,827 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 18:44:55,828 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 18:44:55,829 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 18:44:55,829 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 18:44:55,830 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 18:44:55,831 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 18:44:55,833 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 18:44:55,834 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 18:44:55,834 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 18:44:55,836 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 18:44:55,838 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 18:44:55,839 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 18:44:55,840 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 18:44:55,842 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 18:44:55,844 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 18:44:55,844 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 18:44:55,844 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 18:44:55,845 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 18:44:55,846 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 18:44:55,847 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 18:44:55,848 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 18:44:55,849 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 18:44:55,849 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 18:44:55,850 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-24 18:44:55,850 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 18:44:55,850 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 18:44:55,851 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 18:44:55,852 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 18:44:55,852 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 18:44:55,872 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 18:44:55,872 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 18:44:55,873 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 18:44:55,873 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 18:44:55,874 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 18:44:55,874 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 18:44:55,874 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 18:44:55,874 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 18:44:55,874 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 18:44:55,874 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 18:44:55,875 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 18:44:55,875 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 18:44:55,875 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 18:44:55,876 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 18:44:55,876 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 18:44:55,876 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 18:44:55,876 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 18:44:55,876 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 18:44:55,877 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 18:44:55,879 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 18:44:55,879 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 18:44:55,880 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 18:44:55,880 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 18:44:55,880 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 18:44:55,880 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 18:44:55,880 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 18:44:55,881 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 18:44:55,881 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 18:44:55,881 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 18:44:55,881 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 18:44:55,881 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 18:44:55,881 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 18:44:55,882 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 18:44:55,883 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 18:44:55,931 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 18:44:55,946 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 18:44:55,950 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 18:44:55,951 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 18:44:55,952 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 18:44:55,952 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label14_false-unreach-call.c [2018-10-24 18:44:56,012 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/59f3d8181/8177b072e8e441a4ba9713c9031a4ad9/FLAGbf893cd7e [2018-10-24 18:44:56,735 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 18:44:56,736 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label14_false-unreach-call.c [2018-10-24 18:44:56,758 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/59f3d8181/8177b072e8e441a4ba9713c9031a4ad9/FLAGbf893cd7e [2018-10-24 18:44:56,776 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/59f3d8181/8177b072e8e441a4ba9713c9031a4ad9 [2018-10-24 18:44:56,787 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 18:44:56,789 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 18:44:56,790 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 18:44:56,790 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 18:44:56,794 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 18:44:56,795 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 06:44:56" (1/1) ... [2018-10-24 18:44:56,797 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66d75918 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:44:56, skipping insertion in model container [2018-10-24 18:44:56,798 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 06:44:56" (1/1) ... [2018-10-24 18:44:56,807 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 18:44:56,903 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 18:44:57,594 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 18:44:57,600 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 18:44:57,881 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 18:44:57,903 INFO L193 MainTranslator]: Completed translation [2018-10-24 18:44:57,904 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:44:57 WrapperNode [2018-10-24 18:44:57,904 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 18:44:57,905 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 18:44:57,905 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 18:44:57,905 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 18:44:57,916 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:44:57" (1/1) ... [2018-10-24 18:44:57,964 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:44:57" (1/1) ... [2018-10-24 18:44:58,237 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 18:44:58,238 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 18:44:58,238 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 18:44:58,238 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 18:44:58,249 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:44:57" (1/1) ... [2018-10-24 18:44:58,250 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:44:57" (1/1) ... [2018-10-24 18:44:58,261 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:44:57" (1/1) ... [2018-10-24 18:44:58,263 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:44:57" (1/1) ... [2018-10-24 18:44:58,328 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:44:57" (1/1) ... [2018-10-24 18:44:58,360 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:44:57" (1/1) ... [2018-10-24 18:44:58,382 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:44:57" (1/1) ... [2018-10-24 18:44:58,396 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 18:44:58,397 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 18:44:58,397 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 18:44:58,397 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 18:44:58,398 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:44:57" (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 18:44:58,469 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 18:44:58,470 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 18:44:58,470 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 18:44:58,470 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 18:44:58,470 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 18:44:58,470 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 18:44:58,471 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 18:44:58,471 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 18:44:58,471 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 18:44:58,471 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 18:45:04,793 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 18:45:04,794 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 06:45:04 BoogieIcfgContainer [2018-10-24 18:45:04,794 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 18:45:04,795 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 18:45:04,795 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 18:45:04,799 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 18:45:04,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 06:44:56" (1/3) ... [2018-10-24 18:45:04,800 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72a65134 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 06:45:04, skipping insertion in model container [2018-10-24 18:45:04,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:44:57" (2/3) ... [2018-10-24 18:45:04,801 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72a65134 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 06:45:04, skipping insertion in model container [2018-10-24 18:45:04,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 06:45:04" (3/3) ... [2018-10-24 18:45:04,803 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label14_false-unreach-call.c [2018-10-24 18:45:04,810 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 18:45:04,819 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 18:45:04,834 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 18:45:04,872 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 18:45:04,872 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 18:45:04,872 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 18:45:04,872 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 18:45:04,873 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 18:45:04,873 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 18:45:04,873 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 18:45:04,873 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 18:45:04,906 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states. [2018-10-24 18:45:04,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-10-24 18:45:04,913 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:45:04,914 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] [2018-10-24 18:45:04,916 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:45:04,921 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:45:04,922 INFO L82 PathProgramCache]: Analyzing trace with hash 1095563467, now seen corresponding path program 1 times [2018-10-24 18:45:04,924 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:45:04,972 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:45:04,972 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:45:04,972 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:45:04,973 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:45:05,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:45:05,376 WARN L179 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 18:45:05,491 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 18:45:05,494 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:45:05,494 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 18:45:05,494 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:45:05,500 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 18:45:05,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 18:45:05,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 18:45:05,515 INFO L87 Difference]: Start difference. First operand 410 states. Second operand 3 states. [2018-10-24 18:45:09,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:45:09,163 INFO L93 Difference]: Finished difference Result 1156 states and 2144 transitions. [2018-10-24 18:45:09,169 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 18:45:09,170 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2018-10-24 18:45:09,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:45:09,199 INFO L225 Difference]: With dead ends: 1156 [2018-10-24 18:45:09,199 INFO L226 Difference]: Without dead ends: 744 [2018-10-24 18:45:09,209 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 18:45:09,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2018-10-24 18:45:09,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2018-10-24 18:45:09,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-10-24 18:45:09,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1355 transitions. [2018-10-24 18:45:09,309 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1355 transitions. Word has length 25 [2018-10-24 18:45:09,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:45:09,310 INFO L481 AbstractCegarLoop]: Abstraction has 744 states and 1355 transitions. [2018-10-24 18:45:09,310 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 18:45:09,310 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1355 transitions. [2018-10-24 18:45:09,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2018-10-24 18:45:09,316 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:45:09,316 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 18:45:09,316 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:45:09,317 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:45:09,317 INFO L82 PathProgramCache]: Analyzing trace with hash -826057540, now seen corresponding path program 1 times [2018-10-24 18:45:09,317 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:45:09,319 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:45:09,319 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:45:09,319 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:45:09,319 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:45:09,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:45:09,634 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:45:09,634 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:45:09,634 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 18:45:09,635 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:45:09,637 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 18:45:09,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 18:45:09,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 18:45:09,638 INFO L87 Difference]: Start difference. First operand 744 states and 1355 transitions. Second operand 5 states. [2018-10-24 18:45:17,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:45:17,748 INFO L93 Difference]: Finished difference Result 2194 states and 4083 transitions. [2018-10-24 18:45:17,748 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 18:45:17,748 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 95 [2018-10-24 18:45:17,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:45:17,760 INFO L225 Difference]: With dead ends: 2194 [2018-10-24 18:45:17,761 INFO L226 Difference]: Without dead ends: 1456 [2018-10-24 18:45:17,764 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 18:45:17,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1456 states. [2018-10-24 18:45:17,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1456 to 1436. [2018-10-24 18:45:17,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1436 states. [2018-10-24 18:45:17,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1436 states to 1436 states and 2550 transitions. [2018-10-24 18:45:17,839 INFO L78 Accepts]: Start accepts. Automaton has 1436 states and 2550 transitions. Word has length 95 [2018-10-24 18:45:17,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:45:17,840 INFO L481 AbstractCegarLoop]: Abstraction has 1436 states and 2550 transitions. [2018-10-24 18:45:17,840 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 18:45:17,840 INFO L276 IsEmpty]: Start isEmpty. Operand 1436 states and 2550 transitions. [2018-10-24 18:45:17,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-10-24 18:45:17,845 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:45:17,845 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 18:45:17,845 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:45:17,846 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:45:17,846 INFO L82 PathProgramCache]: Analyzing trace with hash -298596995, now seen corresponding path program 1 times [2018-10-24 18:45:17,846 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:45:17,847 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:45:17,847 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:45:17,847 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:45:17,848 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:45:17,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:45:18,126 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:45:18,127 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:45:18,127 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 18:45:18,127 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:45:18,128 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 18:45:18,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 18:45:18,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 18:45:18,128 INFO L87 Difference]: Start difference. First operand 1436 states and 2550 transitions. Second operand 6 states. [2018-10-24 18:45:24,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:45:24,244 INFO L93 Difference]: Finished difference Result 3936 states and 7024 transitions. [2018-10-24 18:45:24,245 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 18:45:24,246 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 124 [2018-10-24 18:45:24,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:45:24,268 INFO L225 Difference]: With dead ends: 3936 [2018-10-24 18:45:24,268 INFO L226 Difference]: Without dead ends: 2506 [2018-10-24 18:45:24,277 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 18:45:24,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2506 states. [2018-10-24 18:45:24,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2506 to 2479. [2018-10-24 18:45:24,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2479 states. [2018-10-24 18:45:24,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2479 states to 2479 states and 3996 transitions. [2018-10-24 18:45:24,360 INFO L78 Accepts]: Start accepts. Automaton has 2479 states and 3996 transitions. Word has length 124 [2018-10-24 18:45:24,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:45:24,361 INFO L481 AbstractCegarLoop]: Abstraction has 2479 states and 3996 transitions. [2018-10-24 18:45:24,361 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 18:45:24,361 INFO L276 IsEmpty]: Start isEmpty. Operand 2479 states and 3996 transitions. [2018-10-24 18:45:24,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-10-24 18:45:24,365 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:45:24,366 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 18:45:24,366 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:45:24,366 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:45:24,366 INFO L82 PathProgramCache]: Analyzing trace with hash 113309953, now seen corresponding path program 1 times [2018-10-24 18:45:24,367 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:45:24,367 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:45:24,368 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:45:24,368 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:45:24,368 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:45:24,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:45:24,635 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:45:24,635 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:45:24,635 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 18:45:24,635 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:45:24,636 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 18:45:24,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 18:45:24,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 18:45:24,637 INFO L87 Difference]: Start difference. First operand 2479 states and 3996 transitions. Second operand 6 states. [2018-10-24 18:45:27,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:45:27,779 INFO L93 Difference]: Finished difference Result 6050 states and 9896 transitions. [2018-10-24 18:45:27,789 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 18:45:27,789 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 142 [2018-10-24 18:45:27,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:45:27,813 INFO L225 Difference]: With dead ends: 6050 [2018-10-24 18:45:27,813 INFO L226 Difference]: Without dead ends: 3577 [2018-10-24 18:45:27,824 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 18:45:27,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3577 states. [2018-10-24 18:45:27,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3577 to 3545. [2018-10-24 18:45:27,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3545 states. [2018-10-24 18:45:27,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3545 states to 3545 states and 4965 transitions. [2018-10-24 18:45:27,936 INFO L78 Accepts]: Start accepts. Automaton has 3545 states and 4965 transitions. Word has length 142 [2018-10-24 18:45:27,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:45:27,941 INFO L481 AbstractCegarLoop]: Abstraction has 3545 states and 4965 transitions. [2018-10-24 18:45:27,941 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 18:45:27,941 INFO L276 IsEmpty]: Start isEmpty. Operand 3545 states and 4965 transitions. [2018-10-24 18:45:27,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2018-10-24 18:45:27,946 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:45:27,948 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:45:27,948 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:45:27,949 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:45:27,949 INFO L82 PathProgramCache]: Analyzing trace with hash -1758923227, now seen corresponding path program 1 times [2018-10-24 18:45:27,949 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:45:27,950 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:45:27,950 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:45:27,950 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:45:27,950 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:45:28,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:45:28,337 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 85 proven. 16 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 18:45:28,338 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 18:45:28,338 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 18:45:28,339 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 226 with the following transitions: [2018-10-24 18:45:28,343 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [279], [281], [284], [292], [300], [308], [316], [324], [332], [340], [348], [356], [364], [372], [380], [388], [396], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [672], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [912], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-10-24 18:45:28,446 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 18:45:28,447 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 18:45:31,517 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 18:45:31,519 INFO L272 AbstractInterpreter]: Visited 135 different actions 135 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-24 18:45:31,531 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:45:31,531 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 18:45:33,371 INFO L232 lantSequenceWeakener]: Weakened 217 states. On average, predicates are now at 77.51% of their original sizes. [2018-10-24 18:45:33,371 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 18:45:33,940 INFO L413 sIntCurrentIteration]: We have 224 unified AI predicates [2018-10-24 18:45:33,941 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 18:45:33,941 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 18:45:33,942 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [5] total 11 [2018-10-24 18:45:33,942 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:45:33,943 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-24 18:45:33,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-24 18:45:33,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-24 18:45:33,943 INFO L87 Difference]: Start difference. First operand 3545 states and 4965 transitions. Second operand 8 states. [2018-10-24 18:45:38,614 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 18:46:32,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:46:32,917 INFO L93 Difference]: Finished difference Result 7424 states and 10344 transitions. [2018-10-24 18:46:32,917 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 18:46:32,918 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 225 [2018-10-24 18:46:32,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:46:32,934 INFO L225 Difference]: With dead ends: 7424 [2018-10-24 18:46:32,934 INFO L226 Difference]: Without dead ends: 3885 [2018-10-24 18:46:32,946 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 226 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-10-24 18:46:32,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3885 states. [2018-10-24 18:46:33,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3885 to 3883. [2018-10-24 18:46:33,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3883 states. [2018-10-24 18:46:33,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3883 states to 3883 states and 5311 transitions. [2018-10-24 18:46:33,033 INFO L78 Accepts]: Start accepts. Automaton has 3883 states and 5311 transitions. Word has length 225 [2018-10-24 18:46:33,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:46:33,034 INFO L481 AbstractCegarLoop]: Abstraction has 3883 states and 5311 transitions. [2018-10-24 18:46:33,034 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-24 18:46:33,034 INFO L276 IsEmpty]: Start isEmpty. Operand 3883 states and 5311 transitions. [2018-10-24 18:46:33,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2018-10-24 18:46:33,040 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:46:33,041 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 18:46:33,041 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:46:33,041 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:46:33,041 INFO L82 PathProgramCache]: Analyzing trace with hash -1713198942, now seen corresponding path program 1 times [2018-10-24 18:46:33,042 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:46:33,043 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:46:33,043 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:46:33,043 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:46:33,043 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:46:33,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:46:33,426 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 126 proven. 115 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2018-10-24 18:46:33,427 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 18:46:33,427 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 18:46:33,427 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 318 with the following transitions: [2018-10-24 18:46:33,428 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [279], [281], [284], [292], [300], [308], [316], [324], [332], [340], [348], [356], [364], [372], [380], [388], [396], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [672], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [760], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [912], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-10-24 18:46:33,437 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 18:46:33,437 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 18:46:35,859 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 18:46:51,324 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 18:46:51,324 INFO L272 AbstractInterpreter]: Visited 139 different actions 537 times. Merged at 5 different actions 14 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 18:46:51,334 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:46:51,334 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 18:46:54,152 INFO L232 lantSequenceWeakener]: Weakened 92 states. On average, predicates are now at 78.15% of their original sizes. [2018-10-24 18:46:54,153 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 18:48:54,475 INFO L413 sIntCurrentIteration]: We have 316 unified AI predicates [2018-10-24 18:48:54,475 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 18:48:54,475 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 18:48:54,476 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [7] total 22 [2018-10-24 18:48:54,476 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:48:54,477 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-24 18:48:54,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-24 18:48:54,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2018-10-24 18:48:54,477 INFO L87 Difference]: Start difference. First operand 3883 states and 5311 transitions. Second operand 17 states. Received shutdown request... [2018-10-24 18:48:57,179 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 18:48:57,179 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 18:48:57,184 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 18:48:57,185 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 06:48:57 BoogieIcfgContainer [2018-10-24 18:48:57,185 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 18:48:57,186 INFO L168 Benchmark]: Toolchain (without parser) took 240397.59 ms. Allocated memory was 1.5 GB in the beginning and 3.8 GB in the end (delta: 2.3 GB). Free memory was 1.4 GB in the beginning and 2.7 GB in the end (delta: -1.3 GB). Peak memory consumption was 976.3 MB. Max. memory is 7.1 GB. [2018-10-24 18:48:57,187 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 18:48:57,188 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1114.69 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 76.6 MB). Peak memory consumption was 76.6 MB. Max. memory is 7.1 GB. [2018-10-24 18:48:57,189 INFO L168 Benchmark]: Boogie Procedure Inliner took 332.55 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 751.3 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -864.4 MB). Peak memory consumption was 28.5 MB. Max. memory is 7.1 GB. [2018-10-24 18:48:57,191 INFO L168 Benchmark]: Boogie Preprocessor took 158.97 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: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. [2018-10-24 18:48:57,192 INFO L168 Benchmark]: RCFGBuilder took 6397.14 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. [2018-10-24 18:48:57,193 INFO L168 Benchmark]: TraceAbstraction took 232389.66 ms. Allocated memory was 2.3 GB in the beginning and 3.8 GB in the end (delta: 1.5 GB). Free memory was 1.9 GB in the beginning and 2.7 GB in the end (delta: -763.5 MB). Peak memory consumption was 745.4 MB. Max. memory is 7.1 GB. [2018-10-24 18:48:57,203 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 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1114.69 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 76.6 MB). Peak memory consumption was 76.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 332.55 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 751.3 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -864.4 MB). Peak memory consumption was 28.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 158.97 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: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 6397.14 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 232389.66 ms. Allocated memory was 2.3 GB in the beginning and 3.8 GB in the end (delta: 1.5 GB). Free memory was 1.9 GB in the beginning and 2.7 GB in the end (delta: -763.5 MB). Peak memory consumption was 745.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 61]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 61). Cancelled while BasicCegarLoop was constructing difference of abstraction (3883states) and FLOYD_HOARE automaton (currently 7 states, 17 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 20 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 410 locations, 1 error locations. TIMEOUT Result, 232.3s OverallTime, 6 OverallIterations, 4 TraceHistogramMax, 82.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 812 SDtfs, 5851 SDslu, 690 SDs, 0 SdLazy, 8480 SolverSat, 2372 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 50.1s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 580 GetRequests, 321 SyntacticMatches, 211 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 633 ImplicationChecksByTransitivity, 121.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3883occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 21.0s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9954743692968331 AbsIntWeakeningRatio, 0.10740740740740741 AbsIntAvgWeakeningVarsNumRemoved, 417.6925925925926 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 5 MinimizatonAttempts, 81 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 928 NumberOfCodeBlocks, 928 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 922 ConstructedInterpolants, 0 QuantifiedInterpolants, 778761 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 315/446 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown