java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem16_label17_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 20:51:17,838 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 20:51:17,840 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 20:51:17,854 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 20:51:17,854 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 20:51:17,855 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 20:51:17,857 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 20:51:17,859 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 20:51:17,860 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 20:51:17,861 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 20:51:17,862 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 20:51:17,862 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 20:51:17,863 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 20:51:17,864 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 20:51:17,865 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 20:51:17,866 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 20:51:17,867 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 20:51:17,869 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 20:51:17,871 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 20:51:17,873 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 20:51:17,874 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 20:51:17,876 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 20:51:17,878 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 20:51:17,879 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 20:51:17,879 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 20:51:17,880 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 20:51:17,881 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 20:51:17,882 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 20:51:17,882 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 20:51:17,884 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 20:51:17,884 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 20:51:17,885 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 20:51:17,885 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 20:51:17,885 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 20:51:17,886 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 20:51:17,887 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 20:51:17,887 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf [2018-11-07 20:51:17,908 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 20:51:17,909 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 20:51:17,910 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 20:51:17,910 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 20:51:17,910 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 20:51:17,910 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 20:51:17,910 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-07 20:51:17,911 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 20:51:17,911 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 20:51:17,911 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 20:51:17,911 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 20:51:17,911 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 20:51:17,912 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 20:51:17,912 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 20:51:17,913 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 20:51:17,913 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 20:51:17,913 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 20:51:17,913 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 20:51:17,913 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 20:51:17,914 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 20:51:17,914 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 20:51:17,914 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 20:51:17,914 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 20:51:17,914 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 20:51:17,915 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 20:51:17,915 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 20:51:17,915 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 20:51:17,915 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 20:51:17,915 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 20:51:17,916 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 20:51:17,916 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 20:51:17,916 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 20:51:17,916 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 20:51:17,916 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 20:51:17,917 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 20:51:17,981 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 20:51:18,000 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 20:51:18,004 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 20:51:18,005 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 20:51:18,006 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 20:51:18,007 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label17_true-unreach-call.c [2018-11-07 20:51:18,077 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6062e8962/c08b2f5dbb514c6bb081a5b3181ef9a1/FLAGd99653cfb [2018-11-07 20:51:18,850 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 20:51:18,851 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label17_true-unreach-call.c [2018-11-07 20:51:18,873 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6062e8962/c08b2f5dbb514c6bb081a5b3181ef9a1/FLAGd99653cfb [2018-11-07 20:51:18,892 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6062e8962/c08b2f5dbb514c6bb081a5b3181ef9a1 [2018-11-07 20:51:18,905 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 20:51:18,906 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 20:51:18,908 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 20:51:18,908 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 20:51:18,915 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 20:51:18,916 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:51:18" (1/1) ... [2018-11-07 20:51:18,919 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a15b74a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:51:18, skipping insertion in model container [2018-11-07 20:51:18,919 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:51:18" (1/1) ... [2018-11-07 20:51:18,933 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 20:51:19,026 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 20:51:19,725 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 20:51:19,730 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 20:51:20,011 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 20:51:20,032 INFO L193 MainTranslator]: Completed translation [2018-11-07 20:51:20,032 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:51:20 WrapperNode [2018-11-07 20:51:20,032 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 20:51:20,033 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 20:51:20,034 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 20:51:20,034 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 20:51:20,044 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:51:20" (1/1) ... [2018-11-07 20:51:20,215 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:51:20" (1/1) ... [2018-11-07 20:51:20,228 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 20:51:20,229 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 20:51:20,229 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 20:51:20,229 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 20:51:20,239 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:51:20" (1/1) ... [2018-11-07 20:51:20,239 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:51:20" (1/1) ... [2018-11-07 20:51:20,247 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:51:20" (1/1) ... [2018-11-07 20:51:20,247 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:51:20" (1/1) ... [2018-11-07 20:51:20,322 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:51:20" (1/1) ... [2018-11-07 20:51:20,353 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:51:20" (1/1) ... [2018-11-07 20:51:20,371 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:51:20" (1/1) ... [2018-11-07 20:51:20,382 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 20:51:20,383 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 20:51:20,383 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 20:51:20,383 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 20:51:20,384 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:51:20" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 20:51:20,454 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 20:51:20,454 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 20:51:20,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 20:51:20,454 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 20:51:20,455 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 20:51:20,455 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 20:51:20,455 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 20:51:20,455 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 20:51:20,455 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 20:51:20,458 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 20:51:20,459 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 20:51:27,594 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 20:51:27,594 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:51:27 BoogieIcfgContainer [2018-11-07 20:51:27,595 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 20:51:27,596 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 20:51:27,600 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 20:51:27,603 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 20:51:27,603 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 08:51:18" (1/3) ... [2018-11-07 20:51:27,604 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ae896a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:51:27, skipping insertion in model container [2018-11-07 20:51:27,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:51:20" (2/3) ... [2018-11-07 20:51:27,605 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ae896a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:51:27, skipping insertion in model container [2018-11-07 20:51:27,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:51:27" (3/3) ... [2018-11-07 20:51:27,607 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label17_true-unreach-call.c [2018-11-07 20:51:27,619 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 20:51:27,631 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 20:51:27,650 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 20:51:27,697 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 20:51:27,697 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 20:51:27,697 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 20:51:27,698 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 20:51:27,698 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 20:51:27,698 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 20:51:27,698 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 20:51:27,698 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 20:51:27,760 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states. [2018-11-07 20:51:27,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2018-11-07 20:51:27,778 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:51:27,779 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] [2018-11-07 20:51:27,782 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:51:27,793 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:51:27,793 INFO L82 PathProgramCache]: Analyzing trace with hash 1724248043, now seen corresponding path program 1 times [2018-11-07 20:51:27,796 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:51:27,859 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:51:27,860 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:51:27,860 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:51:27,860 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:51:28,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:51:28,385 WARN L179 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 20:51:28,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:51:28,539 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:51:28,539 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 20:51:28,539 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:51:28,546 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 20:51:28,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 20:51:28,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 20:51:28,567 INFO L87 Difference]: Start difference. First operand 410 states. Second operand 3 states. [2018-11-07 20:51:32,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:51:32,299 INFO L93 Difference]: Finished difference Result 1156 states and 2144 transitions. [2018-11-07 20:51:32,300 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 20:51:32,301 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 65 [2018-11-07 20:51:32,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:51:32,333 INFO L225 Difference]: With dead ends: 1156 [2018-11-07 20:51:32,333 INFO L226 Difference]: Without dead ends: 744 [2018-11-07 20:51:32,345 INFO L604 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 [2018-11-07 20:51:32,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2018-11-07 20:51:32,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2018-11-07 20:51:32,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-11-07 20:51:32,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1355 transitions. [2018-11-07 20:51:32,505 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1355 transitions. Word has length 65 [2018-11-07 20:51:32,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:51:32,506 INFO L480 AbstractCegarLoop]: Abstraction has 744 states and 1355 transitions. [2018-11-07 20:51:32,506 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 20:51:32,506 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1355 transitions. [2018-11-07 20:51:32,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-11-07 20:51:32,515 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:51:32,515 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] [2018-11-07 20:51:32,516 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:51:32,516 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:51:32,516 INFO L82 PathProgramCache]: Analyzing trace with hash 735694757, now seen corresponding path program 1 times [2018-11-07 20:51:32,517 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:51:32,518 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:51:32,518 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:51:32,518 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:51:32,519 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:51:32,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:51:32,854 WARN L179 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 20:51:32,953 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:51:32,954 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:51:32,954 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 20:51:32,954 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:51:32,956 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 20:51:32,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 20:51:32,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 20:51:32,957 INFO L87 Difference]: Start difference. First operand 744 states and 1355 transitions. Second operand 6 states. [2018-11-07 20:51:38,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:51:38,207 INFO L93 Difference]: Finished difference Result 2191 states and 4077 transitions. [2018-11-07 20:51:38,210 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 20:51:38,210 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 136 [2018-11-07 20:51:38,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:51:38,225 INFO L225 Difference]: With dead ends: 2191 [2018-11-07 20:51:38,226 INFO L226 Difference]: Without dead ends: 1453 [2018-11-07 20:51:38,229 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 20:51:38,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1453 states. [2018-11-07 20:51:38,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1453 to 1436. [2018-11-07 20:51:38,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1436 states. [2018-11-07 20:51:38,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1436 states to 1436 states and 2556 transitions. [2018-11-07 20:51:38,307 INFO L78 Accepts]: Start accepts. Automaton has 1436 states and 2556 transitions. Word has length 136 [2018-11-07 20:51:38,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:51:38,308 INFO L480 AbstractCegarLoop]: Abstraction has 1436 states and 2556 transitions. [2018-11-07 20:51:38,308 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 20:51:38,308 INFO L276 IsEmpty]: Start isEmpty. Operand 1436 states and 2556 transitions. [2018-11-07 20:51:38,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-11-07 20:51:38,316 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:51:38,316 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] [2018-11-07 20:51:38,316 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:51:38,316 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:51:38,317 INFO L82 PathProgramCache]: Analyzing trace with hash 1598709869, now seen corresponding path program 1 times [2018-11-07 20:51:38,317 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:51:38,318 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:51:38,318 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:51:38,318 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:51:38,318 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:51:38,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:51:38,587 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:51:38,587 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:51:38,587 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 20:51:38,587 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:51:38,588 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 20:51:38,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 20:51:38,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 20:51:38,589 INFO L87 Difference]: Start difference. First operand 1436 states and 2556 transitions. Second operand 6 states. [2018-11-07 20:51:43,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:51:43,944 INFO L93 Difference]: Finished difference Result 3925 states and 7037 transitions. [2018-11-07 20:51:43,947 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 20:51:43,947 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 140 [2018-11-07 20:51:43,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:51:43,971 INFO L225 Difference]: With dead ends: 3925 [2018-11-07 20:51:43,972 INFO L226 Difference]: Without dead ends: 2495 [2018-11-07 20:51:43,984 INFO L604 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 [2018-11-07 20:51:43,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2495 states. [2018-11-07 20:51:44,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2495 to 2466. [2018-11-07 20:51:44,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2466 states. [2018-11-07 20:51:44,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2466 states to 2466 states and 4043 transitions. [2018-11-07 20:51:44,070 INFO L78 Accepts]: Start accepts. Automaton has 2466 states and 4043 transitions. Word has length 140 [2018-11-07 20:51:44,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:51:44,070 INFO L480 AbstractCegarLoop]: Abstraction has 2466 states and 4043 transitions. [2018-11-07 20:51:44,071 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 20:51:44,071 INFO L276 IsEmpty]: Start isEmpty. Operand 2466 states and 4043 transitions. [2018-11-07 20:51:44,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2018-11-07 20:51:44,075 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:51:44,077 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] [2018-11-07 20:51:44,077 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:51:44,077 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:51:44,078 INFO L82 PathProgramCache]: Analyzing trace with hash -901457180, now seen corresponding path program 1 times [2018-11-07 20:51:44,078 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:51:44,078 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:51:44,079 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:51:44,079 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:51:44,079 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:51:44,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:51:44,331 WARN L179 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 20:51:44,400 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:51:44,400 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:51:44,400 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 20:51:44,401 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:51:44,401 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 20:51:44,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 20:51:44,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 20:51:44,402 INFO L87 Difference]: Start difference. First operand 2466 states and 4043 transitions. Second operand 6 states. [2018-11-07 20:51:48,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:51:48,592 INFO L93 Difference]: Finished difference Result 6987 states and 11546 transitions. [2018-11-07 20:51:48,593 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 20:51:48,593 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 171 [2018-11-07 20:51:48,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:51:48,622 INFO L225 Difference]: With dead ends: 6987 [2018-11-07 20:51:48,622 INFO L226 Difference]: Without dead ends: 4527 [2018-11-07 20:51:48,641 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 20:51:48,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4527 states. [2018-11-07 20:51:48,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4527 to 4495. [2018-11-07 20:51:48,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4495 states. [2018-11-07 20:51:48,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4495 states to 4495 states and 6547 transitions. [2018-11-07 20:51:48,760 INFO L78 Accepts]: Start accepts. Automaton has 4495 states and 6547 transitions. Word has length 171 [2018-11-07 20:51:48,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:51:48,761 INFO L480 AbstractCegarLoop]: Abstraction has 4495 states and 6547 transitions. [2018-11-07 20:51:48,761 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 20:51:48,761 INFO L276 IsEmpty]: Start isEmpty. Operand 4495 states and 6547 transitions. [2018-11-07 20:51:48,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2018-11-07 20:51:48,767 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:51:48,767 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:51:48,767 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:51:48,768 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:51:48,768 INFO L82 PathProgramCache]: Analyzing trace with hash 1025094140, now seen corresponding path program 1 times [2018-11-07 20:51:48,768 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:51:48,769 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:51:48,769 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:51:48,769 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:51:48,769 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:51:48,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:51:49,140 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:51:49,140 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:51:49,140 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 20:51:49,140 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:51:49,141 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 20:51:49,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 20:51:49,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-11-07 20:51:49,142 INFO L87 Difference]: Start difference. First operand 4495 states and 6547 transitions. Second operand 6 states. [2018-11-07 20:51:54,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:51:54,803 INFO L93 Difference]: Finished difference Result 17056 states and 26327 transitions. [2018-11-07 20:51:54,807 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 20:51:54,807 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 215 [2018-11-07 20:51:54,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:51:54,895 INFO L225 Difference]: With dead ends: 17056 [2018-11-07 20:51:54,895 INFO L226 Difference]: Without dead ends: 12567 [2018-11-07 20:51:54,946 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-11-07 20:51:54,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12567 states. [2018-11-07 20:51:55,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12567 to 12560. [2018-11-07 20:51:55,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12560 states. [2018-11-07 20:51:55,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12560 states to 12560 states and 17998 transitions. [2018-11-07 20:51:55,316 INFO L78 Accepts]: Start accepts. Automaton has 12560 states and 17998 transitions. Word has length 215 [2018-11-07 20:51:55,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:51:55,317 INFO L480 AbstractCegarLoop]: Abstraction has 12560 states and 17998 transitions. [2018-11-07 20:51:55,317 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 20:51:55,317 INFO L276 IsEmpty]: Start isEmpty. Operand 12560 states and 17998 transitions. [2018-11-07 20:51:55,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2018-11-07 20:51:55,351 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:51:55,351 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, 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] [2018-11-07 20:51:55,352 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:51:55,352 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:51:55,352 INFO L82 PathProgramCache]: Analyzing trace with hash 473724549, now seen corresponding path program 1 times [2018-11-07 20:51:55,352 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:51:55,353 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:51:55,354 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:51:55,354 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:51:55,354 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:51:55,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:51:55,634 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 116 proven. 77 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 20:51:55,635 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:51:55,635 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:51:55,636 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 298 with the following transitions: [2018-11-07 20:51:55,638 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [539], [547], [555], [563], [571], [579], [587], [595], [599], [601], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [720], [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], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [973], [977], [981], [985], [989], [992], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 20:51:55,717 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:51:55,717 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:51:56,714 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:51:56,716 INFO L272 AbstractInterpreter]: Visited 155 different actions 155 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 20:51:56,747 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:51:56,748 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:51:57,973 INFO L227 lantSequenceWeakener]: Weakened 275 states. On average, predicates are now at 78.14% of their original sizes. [2018-11-07 20:51:57,973 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:51:59,143 INFO L415 sIntCurrentIteration]: We unified 296 AI predicates to 296 [2018-11-07 20:51:59,144 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:51:59,145 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:51:59,145 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [6] total 15 [2018-11-07 20:51:59,145 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:51:59,146 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-07 20:51:59,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-07 20:51:59,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-11-07 20:51:59,146 INFO L87 Difference]: Start difference. First operand 12560 states and 17998 transitions. Second operand 11 states. [2018-11-07 20:52:05,209 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:52:24,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:52:24,497 INFO L93 Difference]: Finished difference Result 25457 states and 36478 transitions. [2018-11-07 20:52:24,497 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-07 20:52:24,498 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 297 [2018-11-07 20:52:24,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:52:24,595 INFO L225 Difference]: With dead ends: 25457 [2018-11-07 20:52:24,595 INFO L226 Difference]: Without dead ends: 12903 [2018-11-07 20:52:24,662 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 301 GetRequests, 251 SyntacticMatches, 36 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2018-11-07 20:52:24,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12903 states. [2018-11-07 20:52:24,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12903 to 12898. [2018-11-07 20:52:24,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12898 states. [2018-11-07 20:52:25,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12898 states to 12898 states and 18346 transitions. [2018-11-07 20:52:25,016 INFO L78 Accepts]: Start accepts. Automaton has 12898 states and 18346 transitions. Word has length 297 [2018-11-07 20:52:25,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:52:25,017 INFO L480 AbstractCegarLoop]: Abstraction has 12898 states and 18346 transitions. [2018-11-07 20:52:25,017 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-07 20:52:25,017 INFO L276 IsEmpty]: Start isEmpty. Operand 12898 states and 18346 transitions. [2018-11-07 20:52:25,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2018-11-07 20:52:25,039 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:52:25,040 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, 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] [2018-11-07 20:52:25,040 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:52:25,041 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:52:25,041 INFO L82 PathProgramCache]: Analyzing trace with hash 2137201209, now seen corresponding path program 1 times [2018-11-07 20:52:25,041 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:52:25,042 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:52:25,042 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:52:25,042 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:52:25,042 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:52:25,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:52:25,382 WARN L179 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 20:52:25,905 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 117 proven. 22 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2018-11-07 20:52:25,905 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:52:25,906 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:52:25,906 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 308 with the following transitions: [2018-11-07 20:52:25,907 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [539], [547], [555], [563], [571], [579], [587], [595], [599], [601], [604], [612], [620], [628], [636], [644], [652], [660], [668], [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], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [973], [977], [981], [985], [989], [992], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 20:52:25,918 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:52:25,918 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:52:26,022 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:52:26,959 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:52:26,960 INFO L272 AbstractInterpreter]: Visited 158 different actions 461 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 20:52:26,962 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:52:26,962 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:52:27,458 INFO L227 lantSequenceWeakener]: Weakened 125 states. On average, predicates are now at 78.62% of their original sizes. [2018-11-07 20:52:27,458 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:52:28,458 INFO L415 sIntCurrentIteration]: We unified 306 AI predicates to 306 [2018-11-07 20:52:28,458 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:52:28,459 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:52:28,459 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [19] imperfect sequences [6] total 23 [2018-11-07 20:52:28,459 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:52:28,459 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-11-07 20:52:28,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-11-07 20:52:28,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=252, Unknown=0, NotChecked=0, Total=342 [2018-11-07 20:52:28,460 INFO L87 Difference]: Start difference. First operand 12898 states and 18346 transitions. Second operand 19 states. [2018-11-07 20:53:10,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:53:10,964 INFO L93 Difference]: Finished difference Result 28410 states and 40695 transitions. [2018-11-07 20:53:10,964 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-11-07 20:53:10,964 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 307 [2018-11-07 20:53:10,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:53:11,036 INFO L225 Difference]: With dead ends: 28410 [2018-11-07 20:53:11,036 INFO L226 Difference]: Without dead ends: 15856 [2018-11-07 20:53:11,093 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 316 GetRequests, 274 SyntacticMatches, 15 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=196, Invalid=616, Unknown=0, NotChecked=0, Total=812 [2018-11-07 20:53:11,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15856 states. [2018-11-07 20:53:11,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15856 to 15851. [2018-11-07 20:53:11,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15851 states. [2018-11-07 20:53:11,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15851 states to 15851 states and 21487 transitions. [2018-11-07 20:53:11,525 INFO L78 Accepts]: Start accepts. Automaton has 15851 states and 21487 transitions. Word has length 307 [2018-11-07 20:53:11,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:53:11,525 INFO L480 AbstractCegarLoop]: Abstraction has 15851 states and 21487 transitions. [2018-11-07 20:53:11,525 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-11-07 20:53:11,527 INFO L276 IsEmpty]: Start isEmpty. Operand 15851 states and 21487 transitions. [2018-11-07 20:53:11,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2018-11-07 20:53:11,560 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:53:11,561 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 20:53:11,561 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:53:11,562 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:53:11,562 INFO L82 PathProgramCache]: Analyzing trace with hash 602041146, now seen corresponding path program 1 times [2018-11-07 20:53:11,562 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:53:11,563 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:53:11,563 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:53:11,563 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:53:11,563 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:53:11,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:53:12,131 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-11-07 20:53:12,501 WARN L179 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2018-11-07 20:53:12,766 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 34 [2018-11-07 20:53:13,244 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 264 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:53:13,244 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:53:13,244 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:53:13,245 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 369 with the following transitions: [2018-11-07 20:53:13,245 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [539], [547], [555], [563], [571], [579], [587], [595], [599], [601], [604], [612], [620], [628], [636], [644], [652], [660], [668], [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], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [973], [977], [981], [985], [989], [992], [993], [997], [1001], [1004], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 20:53:13,250 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:53:13,250 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:53:13,393 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:53:13,780 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:53:13,781 INFO L272 AbstractInterpreter]: Visited 161 different actions 470 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 20:53:13,813 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:53:13,813 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:53:14,251 INFO L227 lantSequenceWeakener]: Weakened 102 states. On average, predicates are now at 77.9% of their original sizes. [2018-11-07 20:53:14,251 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:53:14,800 INFO L415 sIntCurrentIteration]: We unified 367 AI predicates to 367 [2018-11-07 20:53:14,801 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:53:14,801 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:53:14,802 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [13] total 29 [2018-11-07 20:53:14,802 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:53:14,803 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-07 20:53:14,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-07 20:53:14,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2018-11-07 20:53:14,804 INFO L87 Difference]: Start difference. First operand 15851 states and 21487 transitions. Second operand 18 states. [2018-11-07 20:54:04,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:54:04,595 INFO L93 Difference]: Finished difference Result 33681 states and 46760 transitions. [2018-11-07 20:54:04,595 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-11-07 20:54:04,595 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 368 [2018-11-07 20:54:04,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:54:04,679 INFO L225 Difference]: With dead ends: 33681 [2018-11-07 20:54:04,679 INFO L226 Difference]: Without dead ends: 19468 [2018-11-07 20:54:04,730 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 375 GetRequests, 342 SyntacticMatches, 9 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 267 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=151, Invalid=499, Unknown=0, NotChecked=0, Total=650 [2018-11-07 20:54:04,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19468 states. [2018-11-07 20:54:05,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19468 to 19094. [2018-11-07 20:54:05,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19094 states. [2018-11-07 20:54:05,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19094 states to 19094 states and 25127 transitions. [2018-11-07 20:54:05,116 INFO L78 Accepts]: Start accepts. Automaton has 19094 states and 25127 transitions. Word has length 368 [2018-11-07 20:54:05,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:54:05,117 INFO L480 AbstractCegarLoop]: Abstraction has 19094 states and 25127 transitions. [2018-11-07 20:54:05,117 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-11-07 20:54:05,117 INFO L276 IsEmpty]: Start isEmpty. Operand 19094 states and 25127 transitions. [2018-11-07 20:54:05,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 426 [2018-11-07 20:54:05,171 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:54:05,171 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 20:54:05,172 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:54:05,172 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:54:05,172 INFO L82 PathProgramCache]: Analyzing trace with hash -1991104502, now seen corresponding path program 1 times [2018-11-07 20:54:05,172 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:54:05,173 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:54:05,173 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:54:05,173 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:54:05,173 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:54:05,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:54:05,814 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 259 proven. 81 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2018-11-07 20:54:05,814 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:54:05,814 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:54:05,814 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 426 with the following transitions: [2018-11-07 20:54:05,815 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [539], [547], [555], [563], [571], [579], [587], [595], [599], [601], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [720], [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], [904], [905], [909], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [973], [977], [981], [985], [989], [992], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 20:54:05,827 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:54:05,828 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:54:05,907 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:54:06,199 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:54:06,200 INFO L272 AbstractInterpreter]: Visited 159 different actions 464 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 20:54:06,207 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:54:06,207 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:54:06,920 INFO L227 lantSequenceWeakener]: Weakened 51 states. On average, predicates are now at 78.07% of their original sizes. [2018-11-07 20:54:06,920 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:54:07,446 INFO L415 sIntCurrentIteration]: We unified 424 AI predicates to 424 [2018-11-07 20:54:07,446 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:54:07,447 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:54:07,447 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [19] imperfect sequences [6] total 23 [2018-11-07 20:54:07,447 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:54:07,448 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-11-07 20:54:07,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-11-07 20:54:07,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2018-11-07 20:54:07,448 INFO L87 Difference]: Start difference. First operand 19094 states and 25127 transitions. Second operand 19 states. Received shutdown request... [2018-11-07 20:55:00,277 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-11-07 20:55:00,278 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 20:55:00,283 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 20:55:00,283 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 08:55:00 BoogieIcfgContainer [2018-11-07 20:55:00,283 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 20:55:00,284 INFO L168 Benchmark]: Toolchain (without parser) took 221378.81 ms. Allocated memory was 1.5 GB in the beginning and 4.8 GB in the end (delta: 3.3 GB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -664.3 MB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. [2018-11-07 20:55:00,285 INFO L168 Benchmark]: CDTParser took 0.22 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. [2018-11-07 20:55:00,286 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1125.35 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: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. [2018-11-07 20:55:00,287 INFO L168 Benchmark]: Boogie Procedure Inliner took 195.36 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 737.1 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -872.6 MB). Peak memory consumption was 27.0 MB. Max. memory is 7.1 GB. [2018-11-07 20:55:00,288 INFO L168 Benchmark]: Boogie Preprocessor took 153.27 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 20:55:00,288 INFO L168 Benchmark]: RCFGBuilder took 7212.09 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: 257.2 MB). Peak memory consumption was 257.2 MB. Max. memory is 7.1 GB. [2018-11-07 20:55:00,289 INFO L168 Benchmark]: TraceAbstraction took 212687.76 ms. Allocated memory was 2.3 GB in the beginning and 4.8 GB in the end (delta: 2.5 GB). Free memory was 1.9 GB in the beginning and 2.1 GB in the end (delta: -133.5 MB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. [2018-11-07 20:55:00,294 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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 1125.35 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: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 195.36 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 737.1 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -872.6 MB). Peak memory consumption was 27.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 153.27 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 7212.09 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: 257.2 MB). Peak memory consumption was 257.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 212687.76 ms. Allocated memory was 2.3 GB in the beginning and 4.8 GB in the end (delta: 2.5 GB). Free memory was 1.9 GB in the beginning and 2.1 GB in the end (delta: -133.5 MB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 181]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 181). Cancelled while BasicCegarLoop was constructing difference of abstraction (19094states) and FLOYD_HOARE automaton (currently 27 states, 19 states before enhancement),while ReachableStatesComputation was computing reachable states (30556 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 410 locations, 1 error locations. TIMEOUT Result, 212.6s OverallTime, 9 OverallIterations, 4 TraceHistogramMax, 195.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2112 SDtfs, 29283 SDslu, 1355 SDs, 0 SdLazy, 37157 SolverSat, 4895 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 77.3s Time, PredicateUnifierStatistics: 8 DeclaredPredicates, 1477 GetRequests, 1285 SyntacticMatches, 65 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 979 ImplicationChecksByTransitivity, 5.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19094occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 3.1s AbstIntTime, 4 AbstIntIterations, 4 AbstIntStrong, 0.9978283231381027 AbsIntWeakeningRatio, 0.07896625987078248 AbsIntAvgWeakeningVarsNumRemoved, 6.69059583632448 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.9s AutomataMinimizationTime, 8 MinimizatonAttempts, 469 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 4.2s InterpolantComputationTime, 2124 NumberOfCodeBlocks, 2124 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 2115 ConstructedInterpolants, 0 QuantifiedInterpolants, 3105145 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 5 PerfectInterpolantSequences, 1188/1370 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown