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/Problem16_label50_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 15:24:29,822 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 15:24:29,824 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 15:24:29,841 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 15:24:29,841 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 15:24:29,842 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 15:24:29,843 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 15:24:29,845 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 15:24:29,847 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 15:24:29,848 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 15:24:29,849 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 15:24:29,849 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 15:24:29,850 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 15:24:29,851 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 15:24:29,852 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 15:24:29,853 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 15:24:29,854 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 15:24:29,857 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 15:24:29,863 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 15:24:29,865 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 15:24:29,868 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 15:24:29,869 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 15:24:29,873 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 15:24:29,873 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 15:24:29,874 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 15:24:29,875 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 15:24:29,878 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 15:24:29,879 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 15:24:29,879 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 15:24:29,880 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 15:24:29,883 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 15:24:29,883 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 15:24:29,885 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 15:24:29,885 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 15:24:29,886 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 15:24:29,887 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 15:24:29,887 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.epf [2018-11-07 15:24:29,916 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 15:24:29,916 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 15:24:29,918 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 15:24:29,918 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 15:24:29,918 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 15:24:29,918 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 15:24:29,919 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 15:24:29,919 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 15:24:29,919 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 15:24:29,919 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 15:24:29,919 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 15:24:29,920 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 15:24:29,921 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 15:24:29,921 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 15:24:29,921 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 15:24:29,922 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 15:24:29,923 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 15:24:29,923 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 15:24:29,924 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 15:24:29,924 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 15:24:29,924 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 15:24:29,924 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 15:24:29,924 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 15:24:29,925 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 15:24:29,925 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 15:24:29,925 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 15:24:29,925 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 15:24:29,925 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 15:24:29,926 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 15:24:29,926 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 15:24:29,926 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 15:24:29,926 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 15:24:29,926 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 15:24:29,927 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 15:24:29,982 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 15:24:29,994 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 15:24:29,998 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 15:24:30,000 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 15:24:30,000 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 15:24:30,001 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label50_true-unreach-call.c [2018-11-07 15:24:30,077 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/153d474ef/f6f969e6d5064ba38210056dc7ff6813/FLAG34b03ae4f [2018-11-07 15:24:30,718 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 15:24:30,719 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label50_true-unreach-call.c [2018-11-07 15:24:30,739 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/153d474ef/f6f969e6d5064ba38210056dc7ff6813/FLAG34b03ae4f [2018-11-07 15:24:30,758 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/153d474ef/f6f969e6d5064ba38210056dc7ff6813 [2018-11-07 15:24:30,768 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 15:24:30,770 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 15:24:30,771 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 15:24:30,771 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 15:24:30,775 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 15:24:30,777 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:24:30" (1/1) ... [2018-11-07 15:24:30,780 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f12b8cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:24:30, skipping insertion in model container [2018-11-07 15:24:30,780 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:24:30" (1/1) ... [2018-11-07 15:24:30,791 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 15:24:30,874 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 15:24:31,582 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 15:24:31,586 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 15:24:31,887 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 15:24:31,909 INFO L193 MainTranslator]: Completed translation [2018-11-07 15:24:31,909 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:24:31 WrapperNode [2018-11-07 15:24:31,910 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 15:24:31,911 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 15:24:31,911 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 15:24:31,911 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 15:24:31,922 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:24:31" (1/1) ... [2018-11-07 15:24:32,096 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:24:31" (1/1) ... [2018-11-07 15:24:32,115 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 15:24:32,117 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 15:24:32,117 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 15:24:32,117 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 15:24:32,129 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:24:31" (1/1) ... [2018-11-07 15:24:32,130 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:24:31" (1/1) ... [2018-11-07 15:24:32,137 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:24:31" (1/1) ... [2018-11-07 15:24:32,138 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:24:31" (1/1) ... [2018-11-07 15:24:32,210 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:24:31" (1/1) ... [2018-11-07 15:24:32,240 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:24:31" (1/1) ... [2018-11-07 15:24:32,261 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:24:31" (1/1) ... [2018-11-07 15:24:32,284 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 15:24:32,285 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 15:24:32,285 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 15:24:32,285 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 15:24:32,286 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:24:31" (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 15:24:32,359 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 15:24:32,360 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 15:24:32,360 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 15:24:32,360 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 15:24:32,360 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 15:24:32,361 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 15:24:32,361 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 15:24:32,361 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 15:24:32,361 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 15:24:32,362 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 15:24:32,362 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 15:24:40,058 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 15:24:40,059 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:24:40 BoogieIcfgContainer [2018-11-07 15:24:40,059 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 15:24:40,060 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 15:24:40,060 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 15:24:40,063 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 15:24:40,063 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 03:24:30" (1/3) ... [2018-11-07 15:24:40,064 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@620dc7f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:24:40, skipping insertion in model container [2018-11-07 15:24:40,064 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:24:31" (2/3) ... [2018-11-07 15:24:40,065 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@620dc7f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:24:40, skipping insertion in model container [2018-11-07 15:24:40,065 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:24:40" (3/3) ... [2018-11-07 15:24:40,066 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label50_true-unreach-call.c [2018-11-07 15:24:40,075 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 15:24:40,083 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 15:24:40,102 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 15:24:40,149 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 15:24:40,150 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 15:24:40,150 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 15:24:40,150 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 15:24:40,150 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 15:24:40,150 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 15:24:40,151 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 15:24:40,151 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 15:24:40,194 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states. [2018-11-07 15:24:40,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-11-07 15:24:40,202 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:24:40,203 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] [2018-11-07 15:24:40,206 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:24:40,211 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:24:40,211 INFO L82 PathProgramCache]: Analyzing trace with hash -1374048196, now seen corresponding path program 1 times [2018-11-07 15:24:40,213 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:24:40,258 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:24:40,258 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:24:40,259 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:24:40,259 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:24:40,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:24:40,708 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 15:24:40,711 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:24:40,711 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 15:24:40,712 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:24:40,718 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 15:24:40,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 15:24:40,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 15:24:40,741 INFO L87 Difference]: Start difference. First operand 410 states. Second operand 4 states. [2018-11-07 15:24:47,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:24:47,371 INFO L93 Difference]: Finished difference Result 1513 states and 2838 transitions. [2018-11-07 15:24:47,372 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 15:24:47,373 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 52 [2018-11-07 15:24:47,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:24:47,403 INFO L225 Difference]: With dead ends: 1513 [2018-11-07 15:24:47,403 INFO L226 Difference]: Without dead ends: 1097 [2018-11-07 15:24:47,414 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 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 15:24:47,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1097 states. [2018-11-07 15:24:47,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1097 to 1097. [2018-11-07 15:24:47,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1097 states. [2018-11-07 15:24:47,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1097 states to 1097 states and 1954 transitions. [2018-11-07 15:24:47,547 INFO L78 Accepts]: Start accepts. Automaton has 1097 states and 1954 transitions. Word has length 52 [2018-11-07 15:24:47,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:24:47,548 INFO L480 AbstractCegarLoop]: Abstraction has 1097 states and 1954 transitions. [2018-11-07 15:24:47,548 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 15:24:47,548 INFO L276 IsEmpty]: Start isEmpty. Operand 1097 states and 1954 transitions. [2018-11-07 15:24:47,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2018-11-07 15:24:47,557 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:24:47,557 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:24:47,558 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:24:47,558 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:24:47,558 INFO L82 PathProgramCache]: Analyzing trace with hash -2033575421, now seen corresponding path program 1 times [2018-11-07 15:24:47,558 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:24:47,560 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:24:47,560 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:24:47,560 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:24:47,560 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:24:47,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:24:47,797 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:24:47,797 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:24:47,797 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 15:24:47,798 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:24:47,800 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 15:24:47,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 15:24:47,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 15:24:47,800 INFO L87 Difference]: Start difference. First operand 1097 states and 1954 transitions. Second operand 6 states. [2018-11-07 15:24:52,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:24:52,575 INFO L93 Difference]: Finished difference Result 3259 states and 5952 transitions. [2018-11-07 15:24:52,583 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 15:24:52,584 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 123 [2018-11-07 15:24:52,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:24:52,612 INFO L225 Difference]: With dead ends: 3259 [2018-11-07 15:24:52,613 INFO L226 Difference]: Without dead ends: 2168 [2018-11-07 15:24:52,619 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 15:24:52,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2168 states. [2018-11-07 15:24:52,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2168 to 2142. [2018-11-07 15:24:52,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2142 states. [2018-11-07 15:24:52,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2142 states to 2142 states and 3739 transitions. [2018-11-07 15:24:52,733 INFO L78 Accepts]: Start accepts. Automaton has 2142 states and 3739 transitions. Word has length 123 [2018-11-07 15:24:52,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:24:52,734 INFO L480 AbstractCegarLoop]: Abstraction has 2142 states and 3739 transitions. [2018-11-07 15:24:52,734 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 15:24:52,734 INFO L276 IsEmpty]: Start isEmpty. Operand 2142 states and 3739 transitions. [2018-11-07 15:24:52,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2018-11-07 15:24:52,740 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:24:52,740 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:24:52,741 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:24:52,741 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:24:52,741 INFO L82 PathProgramCache]: Analyzing trace with hash 1172506123, now seen corresponding path program 1 times [2018-11-07 15:24:52,741 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:24:52,742 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:24:52,743 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:24:52,743 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:24:52,743 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:24:52,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:24:53,282 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:24:53,283 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:24:53,283 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 15:24:53,283 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:24:53,284 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 15:24:53,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 15:24:53,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 15:24:53,285 INFO L87 Difference]: Start difference. First operand 2142 states and 3739 transitions. Second operand 6 states. [2018-11-07 15:24:58,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:24:58,756 INFO L93 Difference]: Finished difference Result 7053 states and 12688 transitions. [2018-11-07 15:24:58,760 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 15:24:58,760 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 151 [2018-11-07 15:24:58,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:24:58,806 INFO L225 Difference]: With dead ends: 7053 [2018-11-07 15:24:58,806 INFO L226 Difference]: Without dead ends: 4917 [2018-11-07 15:24:58,830 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 15:24:58,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4917 states. [2018-11-07 15:24:58,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4917 to 4877. [2018-11-07 15:24:58,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4877 states. [2018-11-07 15:24:58,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4877 states to 4877 states and 7891 transitions. [2018-11-07 15:24:58,995 INFO L78 Accepts]: Start accepts. Automaton has 4877 states and 7891 transitions. Word has length 151 [2018-11-07 15:24:58,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:24:58,996 INFO L480 AbstractCegarLoop]: Abstraction has 4877 states and 7891 transitions. [2018-11-07 15:24:58,996 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 15:24:58,996 INFO L276 IsEmpty]: Start isEmpty. Operand 4877 states and 7891 transitions. [2018-11-07 15:24:59,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2018-11-07 15:24:59,000 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:24:59,000 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:24:59,001 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:24:59,001 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:24:59,001 INFO L82 PathProgramCache]: Analyzing trace with hash 405483975, now seen corresponding path program 1 times [2018-11-07 15:24:59,001 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:24:59,002 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:24:59,002 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:24:59,003 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:24:59,003 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:24:59,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:24:59,254 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:24:59,255 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:24:59,255 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 15:24:59,255 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:24:59,256 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 15:24:59,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 15:24:59,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 15:24:59,257 INFO L87 Difference]: Start difference. First operand 4877 states and 7891 transitions. Second operand 6 states. [2018-11-07 15:25:01,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:25:01,896 INFO L93 Difference]: Finished difference Result 11909 states and 19972 transitions. [2018-11-07 15:25:01,899 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 15:25:01,899 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 169 [2018-11-07 15:25:01,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:25:01,947 INFO L225 Difference]: With dead ends: 11909 [2018-11-07 15:25:01,947 INFO L226 Difference]: Without dead ends: 7038 [2018-11-07 15:25:01,978 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 15:25:01,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7038 states. [2018-11-07 15:25:02,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7038 to 6977. [2018-11-07 15:25:02,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6977 states. [2018-11-07 15:25:02,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6977 states to 6977 states and 9942 transitions. [2018-11-07 15:25:02,190 INFO L78 Accepts]: Start accepts. Automaton has 6977 states and 9942 transitions. Word has length 169 [2018-11-07 15:25:02,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:25:02,191 INFO L480 AbstractCegarLoop]: Abstraction has 6977 states and 9942 transitions. [2018-11-07 15:25:02,191 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 15:25:02,191 INFO L276 IsEmpty]: Start isEmpty. Operand 6977 states and 9942 transitions. [2018-11-07 15:25:02,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2018-11-07 15:25:02,196 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:25:02,197 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:25:02,197 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:25:02,197 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:25:02,197 INFO L82 PathProgramCache]: Analyzing trace with hash 573454830, now seen corresponding path program 1 times [2018-11-07 15:25:02,198 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:25:02,199 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:25:02,199 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:25:02,199 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:25:02,199 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:25:02,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:25:02,511 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 15:25:02,664 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:25:02,665 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:25:02,665 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 15:25:02,665 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:25:02,666 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 15:25:02,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 15:25:02,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 15:25:02,667 INFO L87 Difference]: Start difference. First operand 6977 states and 9942 transitions. Second operand 6 states. [2018-11-07 15:25:06,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:25:06,340 INFO L93 Difference]: Finished difference Result 17709 states and 25496 transitions. [2018-11-07 15:25:06,341 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 15:25:06,341 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 216 [2018-11-07 15:25:06,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:25:06,402 INFO L225 Difference]: With dead ends: 17709 [2018-11-07 15:25:06,402 INFO L226 Difference]: Without dead ends: 10738 [2018-11-07 15:25:06,455 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 15:25:06,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10738 states. [2018-11-07 15:25:06,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10738 to 10702. [2018-11-07 15:25:06,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10702 states. [2018-11-07 15:25:06,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10702 states to 10702 states and 14504 transitions. [2018-11-07 15:25:06,706 INFO L78 Accepts]: Start accepts. Automaton has 10702 states and 14504 transitions. Word has length 216 [2018-11-07 15:25:06,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:25:06,707 INFO L480 AbstractCegarLoop]: Abstraction has 10702 states and 14504 transitions. [2018-11-07 15:25:06,707 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 15:25:06,707 INFO L276 IsEmpty]: Start isEmpty. Operand 10702 states and 14504 transitions. [2018-11-07 15:25:06,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2018-11-07 15:25:06,712 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:25:06,712 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, 2, 2, 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] [2018-11-07 15:25:06,713 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:25:06,713 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:25:06,713 INFO L82 PathProgramCache]: Analyzing trace with hash 1283886317, now seen corresponding path program 1 times [2018-11-07 15:25:06,713 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:25:06,714 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:25:06,714 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:25:06,715 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:25:06,715 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:25:06,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:25:07,021 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2018-11-07 15:25:07,021 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:25:07,022 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 15:25:07,022 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:25:07,023 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 15:25:07,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 15:25:07,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 15:25:07,024 INFO L87 Difference]: Start difference. First operand 10702 states and 14504 transitions. Second operand 4 states. [2018-11-07 15:25:10,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:25:10,696 INFO L93 Difference]: Finished difference Result 27183 states and 37572 transitions. [2018-11-07 15:25:10,700 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 15:25:10,700 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 253 [2018-11-07 15:25:10,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:25:10,777 INFO L225 Difference]: With dead ends: 27183 [2018-11-07 15:25:10,777 INFO L226 Difference]: Without dead ends: 16487 [2018-11-07 15:25:10,821 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 15:25:10,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16487 states. [2018-11-07 15:25:11,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16487 to 16487. [2018-11-07 15:25:11,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16487 states. [2018-11-07 15:25:11,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16487 states to 16487 states and 21483 transitions. [2018-11-07 15:25:11,160 INFO L78 Accepts]: Start accepts. Automaton has 16487 states and 21483 transitions. Word has length 253 [2018-11-07 15:25:11,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:25:11,161 INFO L480 AbstractCegarLoop]: Abstraction has 16487 states and 21483 transitions. [2018-11-07 15:25:11,161 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 15:25:11,161 INFO L276 IsEmpty]: Start isEmpty. Operand 16487 states and 21483 transitions. [2018-11-07 15:25:11,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 438 [2018-11-07 15:25:11,197 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:25:11,198 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 15:25:11,198 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:25:11,199 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:25:11,199 INFO L82 PathProgramCache]: Analyzing trace with hash -207588909, now seen corresponding path program 1 times [2018-11-07 15:25:11,199 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:25:11,200 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:25:11,200 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:25:11,200 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:25:11,200 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:25:11,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:25:11,742 INFO L134 CoverageAnalysis]: Checked inductivity of 497 backedges. 254 proven. 115 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2018-11-07 15:25:11,743 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 15:25:11,743 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 15:25:11,744 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 438 with the following transitions: [2018-11-07 15:25:11,746 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], [495], [497], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [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], [856], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [912], [913], [917], [921], [925], [929], [933], [937], [941], [945], [948], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 15:25:11,811 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 15:25:11,811 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 15:25:12,727 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 15:25:12,730 INFO L272 AbstractInterpreter]: Visited 145 different actions 145 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 15:25:12,786 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:25:12,787 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 15:25:14,688 INFO L227 lantSequenceWeakener]: Weakened 409 states. On average, predicates are now at 77.71% of their original sizes. [2018-11-07 15:25:14,688 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 15:25:17,622 INFO L415 sIntCurrentIteration]: We unified 436 AI predicates to 436 [2018-11-07 15:25:17,623 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 15:25:17,623 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 15:25:17,624 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [6] total 15 [2018-11-07 15:25:17,624 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:25:17,625 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-07 15:25:17,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-07 15:25:17,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-11-07 15:25:17,626 INFO L87 Difference]: Start difference. First operand 16487 states and 21483 transitions. Second operand 11 states. [2018-11-07 15:25:22,914 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