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.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label24_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 15:10:37,936 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 15:10:37,941 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 15:10:37,958 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 15:10:37,958 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 15:10:37,960 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 15:10:37,962 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 15:10:37,964 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 15:10:37,966 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 15:10:37,968 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 15:10:37,970 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 15:10:37,970 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 15:10:37,971 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 15:10:37,974 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 15:10:37,981 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 15:10:37,982 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 15:10:37,984 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 15:10:37,985 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 15:10:37,990 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 15:10:37,993 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 15:10:37,995 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 15:10:37,996 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 15:10:37,998 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 15:10:37,998 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 15:10:37,998 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 15:10:37,999 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 15:10:38,000 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 15:10:38,000 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 15:10:38,001 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 15:10:38,002 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 15:10:38,002 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 15:10:38,003 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 15:10:38,003 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 15:10:38,003 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 15:10:38,004 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 15:10:38,005 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 15:10:38,005 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.epf [2018-11-07 15:10:38,022 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 15:10:38,022 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 15:10:38,023 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 15:10:38,023 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 15:10:38,023 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 15:10:38,025 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 15:10:38,025 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 15:10:38,025 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 15:10:38,025 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 15:10:38,026 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 15:10:38,026 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 15:10:38,026 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 15:10:38,027 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 15:10:38,027 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 15:10:38,027 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 15:10:38,028 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 15:10:38,028 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 15:10:38,028 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 15:10:38,028 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 15:10:38,028 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 15:10:38,029 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 15:10:38,030 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 15:10:38,030 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 15:10:38,030 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 15:10:38,031 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 15:10:38,031 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 15:10:38,031 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 15:10:38,031 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 15:10:38,031 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 15:10:38,032 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 15:10:38,032 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 15:10:38,032 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 15:10:38,032 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 15:10:38,032 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 15:10:38,082 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 15:10:38,094 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 15:10:38,098 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 15:10:38,100 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 15:10:38,100 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 15:10:38,101 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label24_true-unreach-call.c [2018-11-07 15:10:38,159 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d92abd2b3/2f9be89b285c40bf8108b9b885a5bd12/FLAG993c27e05 [2018-11-07 15:10:38,838 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 15:10:38,839 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label24_true-unreach-call.c [2018-11-07 15:10:38,862 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d92abd2b3/2f9be89b285c40bf8108b9b885a5bd12/FLAG993c27e05 [2018-11-07 15:10:38,881 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d92abd2b3/2f9be89b285c40bf8108b9b885a5bd12 [2018-11-07 15:10:38,893 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 15:10:38,895 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 15:10:38,896 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 15:10:38,896 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 15:10:38,902 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 15:10:38,904 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:10:38" (1/1) ... [2018-11-07 15:10:38,909 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d100604 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:10:38, skipping insertion in model container [2018-11-07 15:10:38,909 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:10:38" (1/1) ... [2018-11-07 15:10:38,920 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 15:10:39,031 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 15:10:39,864 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 15:10:39,869 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 15:10:40,189 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 15:10:40,210 INFO L193 MainTranslator]: Completed translation [2018-11-07 15:10:40,211 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:10:40 WrapperNode [2018-11-07 15:10:40,211 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 15:10:40,212 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 15:10:40,212 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 15:10:40,213 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 15:10:40,222 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:10:40" (1/1) ... [2018-11-07 15:10:40,397 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:10:40" (1/1) ... [2018-11-07 15:10:40,405 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 15:10:40,405 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 15:10:40,405 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 15:10:40,406 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 15:10:40,417 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:10:40" (1/1) ... [2018-11-07 15:10:40,417 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:10:40" (1/1) ... [2018-11-07 15:10:40,436 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:10:40" (1/1) ... [2018-11-07 15:10:40,437 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:10:40" (1/1) ... [2018-11-07 15:10:40,518 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:10:40" (1/1) ... [2018-11-07 15:10:40,546 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:10:40" (1/1) ... [2018-11-07 15:10:40,568 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:10:40" (1/1) ... [2018-11-07 15:10:40,589 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 15:10:40,589 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 15:10:40,589 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 15:10:40,590 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 15:10:40,590 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:10:40" (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 15:10:40,658 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 15:10:40,658 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 15:10:40,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 15:10:40,659 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 15:10:40,659 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 15:10:40,659 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 15:10:40,659 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 15:10:40,659 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 15:10:40,659 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 15:10:40,660 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 15:10:40,660 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 15:10:47,984 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 15:10:47,985 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:10:47 BoogieIcfgContainer [2018-11-07 15:10:47,985 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 15:10:47,986 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 15:10:47,987 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 15:10:47,990 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 15:10:47,990 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 03:10:38" (1/3) ... [2018-11-07 15:10:47,991 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a4ad88b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:10:47, skipping insertion in model container [2018-11-07 15:10:47,991 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:10:40" (2/3) ... [2018-11-07 15:10:47,992 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a4ad88b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:10:47, skipping insertion in model container [2018-11-07 15:10:47,992 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:10:47" (3/3) ... [2018-11-07 15:10:47,994 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label24_true-unreach-call.c [2018-11-07 15:10:48,004 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 15:10:48,013 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 15:10:48,031 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 15:10:48,073 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 15:10:48,073 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 15:10:48,073 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 15:10:48,074 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 15:10:48,074 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 15:10:48,074 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 15:10:48,074 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 15:10:48,074 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 15:10:48,110 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-11-07 15:10:48,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-11-07 15:10:48,123 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:10:48,125 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] [2018-11-07 15:10:48,127 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:10:48,132 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:10:48,132 INFO L82 PathProgramCache]: Analyzing trace with hash -1425761551, now seen corresponding path program 1 times [2018-11-07 15:10:48,135 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:10:48,186 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:10:48,186 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:10:48,186 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:10:48,187 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:10:48,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:10:48,647 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 15:10:48,649 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:10:48,650 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 15:10:48,650 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:10:48,656 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 15:10:48,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 15:10:48,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 15:10:48,674 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 3 states. [2018-11-07 15:10:52,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:10:52,660 INFO L93 Difference]: Finished difference Result 1198 states and 2158 transitions. [2018-11-07 15:10:52,662 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 15:10:52,663 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 45 [2018-11-07 15:10:52,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:10:52,687 INFO L225 Difference]: With dead ends: 1198 [2018-11-07 15:10:52,687 INFO L226 Difference]: Without dead ends: 758 [2018-11-07 15:10:52,696 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 15:10:52,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 758 states. [2018-11-07 15:10:52,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 758 to 754. [2018-11-07 15:10:52,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 754 states. [2018-11-07 15:10:52,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 1328 transitions. [2018-11-07 15:10:52,808 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 1328 transitions. Word has length 45 [2018-11-07 15:10:52,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:10:52,809 INFO L480 AbstractCegarLoop]: Abstraction has 754 states and 1328 transitions. [2018-11-07 15:10:52,809 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 15:10:52,809 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 1328 transitions. [2018-11-07 15:10:52,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2018-11-07 15:10:52,821 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:10:52,821 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:10:52,822 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:10:52,822 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:10:52,822 INFO L82 PathProgramCache]: Analyzing trace with hash 146607380, now seen corresponding path program 1 times [2018-11-07 15:10:52,823 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:10:52,824 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:10:52,824 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:10:52,824 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:10:52,825 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:10:52,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:10:53,174 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:10:53,174 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:10:53,174 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 15:10:53,175 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:10:53,178 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 15:10:53,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 15:10:53,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 15:10:53,179 INFO L87 Difference]: Start difference. First operand 754 states and 1328 transitions. Second operand 5 states. [2018-11-07 15:10:59,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:10:59,671 INFO L93 Difference]: Finished difference Result 2231 states and 3964 transitions. [2018-11-07 15:10:59,682 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 15:10:59,682 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 119 [2018-11-07 15:10:59,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:10:59,698 INFO L225 Difference]: With dead ends: 2231 [2018-11-07 15:10:59,698 INFO L226 Difference]: Without dead ends: 1483 [2018-11-07 15:10:59,703 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 15:10:59,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1483 states. [2018-11-07 15:10:59,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1483 to 1449. [2018-11-07 15:10:59,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1449 states. [2018-11-07 15:10:59,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1449 states to 1449 states and 2254 transitions. [2018-11-07 15:10:59,793 INFO L78 Accepts]: Start accepts. Automaton has 1449 states and 2254 transitions. Word has length 119 [2018-11-07 15:10:59,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:10:59,793 INFO L480 AbstractCegarLoop]: Abstraction has 1449 states and 2254 transitions. [2018-11-07 15:10:59,793 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 15:10:59,795 INFO L276 IsEmpty]: Start isEmpty. Operand 1449 states and 2254 transitions. [2018-11-07 15:10:59,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-11-07 15:10:59,810 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:10:59,811 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:10:59,811 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:10:59,811 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:10:59,811 INFO L82 PathProgramCache]: Analyzing trace with hash -762150644, now seen corresponding path program 1 times [2018-11-07 15:10:59,812 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:10:59,813 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:10:59,813 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:10:59,813 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:10:59,813 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:10:59,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:11:00,210 WARN L179 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 15:11:00,598 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:11:00,598 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:11:00,598 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 15:11:00,598 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:11:00,599 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 15:11:00,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 15:11:00,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 15:11:00,600 INFO L87 Difference]: Start difference. First operand 1449 states and 2254 transitions. Second operand 6 states. [2018-11-07 15:11:05,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:11:05,586 INFO L93 Difference]: Finished difference Result 4188 states and 6605 transitions. [2018-11-07 15:11:05,586 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 15:11:05,587 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 131 [2018-11-07 15:11:05,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:11:05,605 INFO L225 Difference]: With dead ends: 4188 [2018-11-07 15:11:05,605 INFO L226 Difference]: Without dead ends: 2745 [2018-11-07 15:11:05,613 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 15:11:05,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2745 states. [2018-11-07 15:11:05,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2745 to 2711. [2018-11-07 15:11:05,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2711 states. [2018-11-07 15:11:05,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2711 states to 2711 states and 3819 transitions. [2018-11-07 15:11:05,693 INFO L78 Accepts]: Start accepts. Automaton has 2711 states and 3819 transitions. Word has length 131 [2018-11-07 15:11:05,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:11:05,696 INFO L480 AbstractCegarLoop]: Abstraction has 2711 states and 3819 transitions. [2018-11-07 15:11:05,696 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 15:11:05,696 INFO L276 IsEmpty]: Start isEmpty. Operand 2711 states and 3819 transitions. [2018-11-07 15:11:05,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-11-07 15:11:05,699 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:11:05,699 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:11:05,700 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:11:05,700 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:11:05,700 INFO L82 PathProgramCache]: Analyzing trace with hash -131413768, now seen corresponding path program 1 times [2018-11-07 15:11:05,700 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:11:05,701 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:11:05,702 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:11:05,702 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:11:05,702 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:11:05,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:11:05,976 WARN L179 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 15:11:06,014 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:11:06,015 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:11:06,015 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 15:11:06,015 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:11:06,016 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 15:11:06,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 15:11:06,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 15:11:06,017 INFO L87 Difference]: Start difference. First operand 2711 states and 3819 transitions. Second operand 6 states. [2018-11-07 15:11:10,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:11:10,955 INFO L93 Difference]: Finished difference Result 6682 states and 9546 transitions. [2018-11-07 15:11:10,955 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 15:11:10,955 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 132 [2018-11-07 15:11:10,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:11:10,977 INFO L225 Difference]: With dead ends: 6682 [2018-11-07 15:11:10,977 INFO L226 Difference]: Without dead ends: 3977 [2018-11-07 15:11:10,988 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 15:11:10,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3977 states. [2018-11-07 15:11:11,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3977 to 3953. [2018-11-07 15:11:11,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3953 states. [2018-11-07 15:11:11,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3953 states to 3953 states and 5247 transitions. [2018-11-07 15:11:11,080 INFO L78 Accepts]: Start accepts. Automaton has 3953 states and 5247 transitions. Word has length 132 [2018-11-07 15:11:11,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:11:11,080 INFO L480 AbstractCegarLoop]: Abstraction has 3953 states and 5247 transitions. [2018-11-07 15:11:11,080 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 15:11:11,080 INFO L276 IsEmpty]: Start isEmpty. Operand 3953 states and 5247 transitions. [2018-11-07 15:11:11,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2018-11-07 15:11:11,085 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:11:11,085 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:11:11,085 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:11:11,085 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:11:11,086 INFO L82 PathProgramCache]: Analyzing trace with hash 61536093, now seen corresponding path program 1 times [2018-11-07 15:11:11,086 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:11:11,087 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:11:11,087 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:11:11,087 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:11:11,087 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:11:11,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:11:11,431 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:11:11,431 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:11:11,431 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 15:11:11,431 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:11:11,432 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 15:11:11,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 15:11:11,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-07 15:11:11,433 INFO L87 Difference]: Start difference. First operand 3953 states and 5247 transitions. Second operand 6 states. [2018-11-07 15:11:19,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:11:19,517 INFO L93 Difference]: Finished difference Result 14055 states and 18983 transitions. [2018-11-07 15:11:19,528 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 15:11:19,528 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 172 [2018-11-07 15:11:19,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:11:19,573 INFO L225 Difference]: With dead ends: 14055 [2018-11-07 15:11:19,573 INFO L226 Difference]: Without dead ends: 10108 [2018-11-07 15:11:19,597 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 15:11:19,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10108 states. [2018-11-07 15:11:19,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10108 to 9903. [2018-11-07 15:11:19,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9903 states. [2018-11-07 15:11:19,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9903 states to 9903 states and 12523 transitions. [2018-11-07 15:11:19,822 INFO L78 Accepts]: Start accepts. Automaton has 9903 states and 12523 transitions. Word has length 172 [2018-11-07 15:11:19,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:11:19,822 INFO L480 AbstractCegarLoop]: Abstraction has 9903 states and 12523 transitions. [2018-11-07 15:11:19,822 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 15:11:19,823 INFO L276 IsEmpty]: Start isEmpty. Operand 9903 states and 12523 transitions. [2018-11-07 15:11:19,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2018-11-07 15:11:19,830 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:11:19,830 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 15:11:19,830 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:11:19,830 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:11:19,831 INFO L82 PathProgramCache]: Analyzing trace with hash 183841615, now seen corresponding path program 1 times [2018-11-07 15:11:19,831 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:11:19,832 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:11:19,832 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:11:19,832 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:11:19,832 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:11:19,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:11:20,139 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-11-07 15:11:20,140 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:11:20,140 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 15:11:20,140 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:11:20,141 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 15:11:20,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 15:11:20,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 15:11:20,142 INFO L87 Difference]: Start difference. First operand 9903 states and 12523 transitions. Second operand 4 states. [2018-11-07 15:11:24,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:11:24,501 INFO L93 Difference]: Finished difference Result 32954 states and 43877 transitions. [2018-11-07 15:11:24,504 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 15:11:24,504 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 200 [2018-11-07 15:11:24,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:11:24,594 INFO L225 Difference]: With dead ends: 32954 [2018-11-07 15:11:24,595 INFO L226 Difference]: Without dead ends: 23057 [2018-11-07 15:11:24,669 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 15:11:24,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23057 states. [2018-11-07 15:11:25,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23057 to 22425. [2018-11-07 15:11:25,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22425 states. [2018-11-07 15:11:25,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22425 states to 22425 states and 27436 transitions. [2018-11-07 15:11:25,182 INFO L78 Accepts]: Start accepts. Automaton has 22425 states and 27436 transitions. Word has length 200 [2018-11-07 15:11:25,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:11:25,182 INFO L480 AbstractCegarLoop]: Abstraction has 22425 states and 27436 transitions. [2018-11-07 15:11:25,183 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 15:11:25,183 INFO L276 IsEmpty]: Start isEmpty. Operand 22425 states and 27436 transitions. [2018-11-07 15:11:25,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2018-11-07 15:11:25,197 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:11:25,197 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 15:11:25,198 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:11:25,198 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:11:25,198 INFO L82 PathProgramCache]: Analyzing trace with hash 1258150557, now seen corresponding path program 1 times [2018-11-07 15:11:25,198 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:11:25,199 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:11:25,199 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:11:25,199 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:11:25,199 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:11:25,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:11:25,417 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 3 [2018-11-07 15:11:25,436 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-11-07 15:11:25,437 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:11:25,438 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 15:11:25,438 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:11:25,438 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 15:11:25,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 15:11:25,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 15:11:25,439 INFO L87 Difference]: Start difference. First operand 22425 states and 27436 transitions. Second operand 3 states. [2018-11-07 15:11:29,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:11:29,509 INFO L93 Difference]: Finished difference Result 50641 states and 63873 transitions. [2018-11-07 15:11:29,509 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 15:11:29,509 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 213 [2018-11-07 15:11:29,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:11:29,633 INFO L225 Difference]: With dead ends: 50641 [2018-11-07 15:11:29,633 INFO L226 Difference]: Without dead ends: 28222 [2018-11-07 15:11:29,699 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 15:11:29,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28222 states. [2018-11-07 15:11:30,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28222 to 28123. [2018-11-07 15:11:30,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28123 states. [2018-11-07 15:11:30,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28123 states to 28123 states and 35307 transitions. [2018-11-07 15:11:30,737 INFO L78 Accepts]: Start accepts. Automaton has 28123 states and 35307 transitions. Word has length 213 [2018-11-07 15:11:30,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:11:30,738 INFO L480 AbstractCegarLoop]: Abstraction has 28123 states and 35307 transitions. [2018-11-07 15:11:30,738 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 15:11:30,738 INFO L276 IsEmpty]: Start isEmpty. Operand 28123 states and 35307 transitions. [2018-11-07 15:11:30,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2018-11-07 15:11:30,752 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:11:30,753 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 15:11:30,753 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:11:30,753 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:11:30,753 INFO L82 PathProgramCache]: Analyzing trace with hash -79355213, now seen corresponding path program 1 times [2018-11-07 15:11:30,754 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:11:30,754 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:11:30,754 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:11:30,755 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:11:30,755 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:11:30,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:11:31,241 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 155 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:11:31,242 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 15:11:31,242 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 15:11:31,243 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 219 with the following transitions: [2018-11-07 15:11:31,252 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [333], [335], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [617], [618], [622], [626], [630], [641], [645], [649], [653], [657], [660], [663], [667], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 15:11:31,309 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 15:11:31,309 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 15:11:31,832 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 15:11:31,833 INFO L272 AbstractInterpreter]: Visited 95 different actions 95 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 15:11:31,881 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:11:31,881 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 15:11:32,414 INFO L227 lantSequenceWeakener]: Weakened 207 states. On average, predicates are now at 77.85% of their original sizes. [2018-11-07 15:11:32,415 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 15:11:32,782 INFO L415 sIntCurrentIteration]: We unified 217 AI predicates to 217 [2018-11-07 15:11:32,782 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 15:11:32,786 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 15:11:32,786 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-11-07 15:11:32,786 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:11:32,787 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 15:11:32,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 15:11:32,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 15:11:32,788 INFO L87 Difference]: Start difference. First operand 28123 states and 35307 transitions. Second operand 7 states. [2018-11-07 15:11:34,772 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown