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_label46_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 15:14:00,993 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 15:14:00,995 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 15:14:01,007 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 15:14:01,007 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 15:14:01,008 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 15:14:01,010 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 15:14:01,011 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 15:14:01,013 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 15:14:01,014 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 15:14:01,015 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 15:14:01,015 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 15:14:01,016 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 15:14:01,017 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 15:14:01,018 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 15:14:01,019 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 15:14:01,019 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 15:14:01,021 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 15:14:01,023 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 15:14:01,025 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 15:14:01,026 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 15:14:01,027 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 15:14:01,029 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 15:14:01,029 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 15:14:01,030 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 15:14:01,030 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 15:14:01,031 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 15:14:01,032 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 15:14:01,033 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 15:14:01,034 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 15:14:01,034 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 15:14:01,035 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 15:14:01,035 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 15:14:01,035 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 15:14:01,036 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 15:14:01,037 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 15:14:01,037 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 15:14:01,053 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 15:14:01,054 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 15:14:01,055 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 15:14:01,055 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 15:14:01,055 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 15:14:01,055 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 15:14:01,055 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 15:14:01,056 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 15:14:01,056 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 15:14:01,056 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 15:14:01,056 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 15:14:01,056 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 15:14:01,057 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 15:14:01,057 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 15:14:01,057 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 15:14:01,057 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 15:14:01,058 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 15:14:01,058 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 15:14:01,058 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 15:14:01,058 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 15:14:01,058 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 15:14:01,059 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 15:14:01,059 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 15:14:01,059 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 15:14:01,059 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 15:14:01,059 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 15:14:01,060 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 15:14:01,060 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 15:14:01,060 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 15:14:01,060 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 15:14:01,060 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 15:14:01,060 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 15:14:01,061 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 15:14:01,061 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 15:14:01,131 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 15:14:01,148 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 15:14:01,151 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 15:14:01,154 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 15:14:01,154 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 15:14:01,155 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label46_true-unreach-call.c [2018-11-07 15:14:01,228 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a83414e8/6b5bb8bfba9f40ed8b6063db6f35603a/FLAGcb79fc7f1 [2018-11-07 15:14:01,929 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 15:14:01,930 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label46_true-unreach-call.c [2018-11-07 15:14:01,961 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a83414e8/6b5bb8bfba9f40ed8b6063db6f35603a/FLAGcb79fc7f1 [2018-11-07 15:14:01,982 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a83414e8/6b5bb8bfba9f40ed8b6063db6f35603a [2018-11-07 15:14:01,996 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 15:14:01,998 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 15:14:02,000 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 15:14:02,000 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 15:14:02,007 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 15:14:02,008 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:14:01" (1/1) ... [2018-11-07 15:14:02,011 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c679a99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:14:02, skipping insertion in model container [2018-11-07 15:14:02,012 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:14:01" (1/1) ... [2018-11-07 15:14:02,023 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 15:14:02,123 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 15:14:03,061 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 15:14:03,065 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 15:14:03,356 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 15:14:03,377 INFO L193 MainTranslator]: Completed translation [2018-11-07 15:14:03,377 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:14:03 WrapperNode [2018-11-07 15:14:03,378 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 15:14:03,379 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 15:14:03,379 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 15:14:03,379 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 15:14:03,390 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:14:03" (1/1) ... [2018-11-07 15:14:03,624 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:14:03" (1/1) ... [2018-11-07 15:14:03,640 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 15:14:03,640 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 15:14:03,640 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 15:14:03,641 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 15:14:03,654 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:14:03" (1/1) ... [2018-11-07 15:14:03,654 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:14:03" (1/1) ... [2018-11-07 15:14:03,667 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:14:03" (1/1) ... [2018-11-07 15:14:03,668 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:14:03" (1/1) ... [2018-11-07 15:14:03,748 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:14:03" (1/1) ... [2018-11-07 15:14:03,775 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:14:03" (1/1) ... [2018-11-07 15:14:03,799 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:14:03" (1/1) ... [2018-11-07 15:14:03,820 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 15:14:03,821 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 15:14:03,821 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 15:14:03,821 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 15:14:03,822 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:14:03" (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 15:14:03,888 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 15:14:03,888 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 15:14:03,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 15:14:03,888 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 15:14:03,888 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 15:14:03,889 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 15:14:03,889 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 15:14:03,889 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 15:14:03,889 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 15:14:03,889 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 15:14:03,889 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 15:14:10,479 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 15:14:10,480 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:14:10 BoogieIcfgContainer [2018-11-07 15:14:10,480 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 15:14:10,481 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 15:14:10,482 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 15:14:10,486 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 15:14:10,486 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 03:14:01" (1/3) ... [2018-11-07 15:14:10,487 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3461119f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:14:10, skipping insertion in model container [2018-11-07 15:14:10,487 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:14:03" (2/3) ... [2018-11-07 15:14:10,488 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3461119f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:14:10, skipping insertion in model container [2018-11-07 15:14:10,488 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:14:10" (3/3) ... [2018-11-07 15:14:10,491 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label46_true-unreach-call.c [2018-11-07 15:14:10,500 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 15:14:10,509 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 15:14:10,526 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 15:14:10,567 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 15:14:10,568 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 15:14:10,568 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 15:14:10,568 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 15:14:10,568 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 15:14:10,568 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 15:14:10,568 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 15:14:10,569 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 15:14:10,602 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-11-07 15:14:10,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-11-07 15:14:10,612 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:14:10,615 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] [2018-11-07 15:14:10,618 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:14:10,623 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:14:10,624 INFO L82 PathProgramCache]: Analyzing trace with hash -171109996, now seen corresponding path program 1 times [2018-11-07 15:14:10,626 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:14:10,676 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:14:10,676 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:14:10,676 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:14:10,677 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:14:10,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:14:11,098 WARN L179 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 15:14:11,186 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 15:14:11,189 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:14:11,189 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 15:14:11,189 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:14:11,196 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 15:14:11,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 15:14:11,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 15:14:11,219 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 3 states. [2018-11-07 15:14:14,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:14:14,846 INFO L93 Difference]: Finished difference Result 1198 states and 2158 transitions. [2018-11-07 15:14:14,847 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 15:14:14,848 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 50 [2018-11-07 15:14:14,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:14:14,874 INFO L225 Difference]: With dead ends: 1198 [2018-11-07 15:14:14,874 INFO L226 Difference]: Without dead ends: 758 [2018-11-07 15:14:14,885 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 15:14:14,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 758 states. [2018-11-07 15:14:15,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 758 to 754. [2018-11-07 15:14:15,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 754 states. [2018-11-07 15:14:15,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 1328 transitions. [2018-11-07 15:14:15,018 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 1328 transitions. Word has length 50 [2018-11-07 15:14:15,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:14:15,019 INFO L480 AbstractCegarLoop]: Abstraction has 754 states and 1328 transitions. [2018-11-07 15:14:15,019 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 15:14:15,019 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 1328 transitions. [2018-11-07 15:14:15,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-11-07 15:14:15,036 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:14:15,036 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:14:15,036 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:14:15,037 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:14:15,037 INFO L82 PathProgramCache]: Analyzing trace with hash 1340083984, now seen corresponding path program 1 times [2018-11-07 15:14:15,037 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:14:15,039 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:14:15,039 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:14:15,039 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:14:15,040 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:14:15,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:14:15,373 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:14:15,373 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:14:15,373 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 15:14:15,374 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:14:15,377 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 15:14:15,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 15:14:15,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 15:14:15,378 INFO L87 Difference]: Start difference. First operand 754 states and 1328 transitions. Second operand 5 states. [2018-11-07 15:14:20,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:14:20,955 INFO L93 Difference]: Finished difference Result 2231 states and 3964 transitions. [2018-11-07 15:14:20,966 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 15:14:20,967 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 124 [2018-11-07 15:14:20,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:14:20,979 INFO L225 Difference]: With dead ends: 2231 [2018-11-07 15:14:20,979 INFO L226 Difference]: Without dead ends: 1483 [2018-11-07 15:14:20,984 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 15:14:20,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1483 states. [2018-11-07 15:14:21,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1483 to 1449. [2018-11-07 15:14:21,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1449 states. [2018-11-07 15:14:21,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1449 states to 1449 states and 2254 transitions. [2018-11-07 15:14:21,053 INFO L78 Accepts]: Start accepts. Automaton has 1449 states and 2254 transitions. Word has length 124 [2018-11-07 15:14:21,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:14:21,054 INFO L480 AbstractCegarLoop]: Abstraction has 1449 states and 2254 transitions. [2018-11-07 15:14:21,054 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 15:14:21,054 INFO L276 IsEmpty]: Start isEmpty. Operand 1449 states and 2254 transitions. [2018-11-07 15:14:21,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-11-07 15:14:21,061 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:14:21,063 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:14:21,064 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:14:21,064 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:14:21,064 INFO L82 PathProgramCache]: Analyzing trace with hash 1528606616, now seen corresponding path program 1 times [2018-11-07 15:14:21,064 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:14:21,065 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:14:21,066 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:14:21,066 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:14:21,066 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:14:21,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:14:21,347 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:14:21,347 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:14:21,347 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 15:14:21,348 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:14:21,348 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 15:14:21,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 15:14:21,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 15:14:21,349 INFO L87 Difference]: Start difference. First operand 1449 states and 2254 transitions. Second operand 6 states. [2018-11-07 15:14:26,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:14:26,996 INFO L93 Difference]: Finished difference Result 4188 states and 6605 transitions. [2018-11-07 15:14:26,997 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 15:14:26,997 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 136 [2018-11-07 15:14:27,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:14:27,019 INFO L225 Difference]: With dead ends: 4188 [2018-11-07 15:14:27,019 INFO L226 Difference]: Without dead ends: 2745 [2018-11-07 15:14:27,029 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 15:14:27,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2745 states. [2018-11-07 15:14:27,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2745 to 2711. [2018-11-07 15:14:27,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2711 states. [2018-11-07 15:14:27,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2711 states to 2711 states and 3819 transitions. [2018-11-07 15:14:27,120 INFO L78 Accepts]: Start accepts. Automaton has 2711 states and 3819 transitions. Word has length 136 [2018-11-07 15:14:27,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:14:27,121 INFO L480 AbstractCegarLoop]: Abstraction has 2711 states and 3819 transitions. [2018-11-07 15:14:27,121 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 15:14:27,121 INFO L276 IsEmpty]: Start isEmpty. Operand 2711 states and 3819 transitions. [2018-11-07 15:14:27,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2018-11-07 15:14:27,124 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:14:27,124 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:14:27,124 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:14:27,125 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:14:27,125 INFO L82 PathProgramCache]: Analyzing trace with hash -929559410, now seen corresponding path program 1 times [2018-11-07 15:14:27,125 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:14:27,126 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:14:27,126 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:14:27,126 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:14:27,126 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:14:27,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:14:27,402 WARN L179 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 15:14:27,531 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:14:27,532 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:14:27,532 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 15:14:27,532 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:14:27,533 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 15:14:27,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 15:14:27,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 15:14:27,534 INFO L87 Difference]: Start difference. First operand 2711 states and 3819 transitions. Second operand 6 states. [2018-11-07 15:14:31,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:14:31,833 INFO L93 Difference]: Finished difference Result 6679 states and 9540 transitions. [2018-11-07 15:14:31,842 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 15:14:31,842 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 137 [2018-11-07 15:14:31,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:14:31,869 INFO L225 Difference]: With dead ends: 6679 [2018-11-07 15:14:31,869 INFO L226 Difference]: Without dead ends: 3974 [2018-11-07 15:14:31,883 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 15:14:31,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3974 states. [2018-11-07 15:14:31,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3974 to 3953. [2018-11-07 15:14:31,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3953 states. [2018-11-07 15:14:31,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3953 states to 3953 states and 5247 transitions. [2018-11-07 15:14:31,996 INFO L78 Accepts]: Start accepts. Automaton has 3953 states and 5247 transitions. Word has length 137 [2018-11-07 15:14:31,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:14:31,997 INFO L480 AbstractCegarLoop]: Abstraction has 3953 states and 5247 transitions. [2018-11-07 15:14:31,997 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 15:14:31,997 INFO L276 IsEmpty]: Start isEmpty. Operand 3953 states and 5247 transitions. [2018-11-07 15:14:32,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2018-11-07 15:14:32,000 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:14:32,000 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:14:32,001 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:14:32,001 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:14:32,001 INFO L82 PathProgramCache]: Analyzing trace with hash -470998967, now seen corresponding path program 1 times [2018-11-07 15:14:32,001 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:14:32,002 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:14:32,002 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:14:32,002 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:14:32,003 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:14:32,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:14:32,271 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:14:32,272 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:14:32,272 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 15:14:32,272 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:14:32,272 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 15:14:32,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 15:14:32,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-07 15:14:32,273 INFO L87 Difference]: Start difference. First operand 3953 states and 5247 transitions. Second operand 6 states. [2018-11-07 15:14:38,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:14:38,960 INFO L93 Difference]: Finished difference Result 14030 states and 18946 transitions. [2018-11-07 15:14:38,960 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 15:14:38,960 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 177 [2018-11-07 15:14:38,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:14:39,014 INFO L225 Difference]: With dead ends: 14030 [2018-11-07 15:14:39,014 INFO L226 Difference]: Without dead ends: 10083 [2018-11-07 15:14:39,039 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 15:14:39,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10083 states. [2018-11-07 15:14:39,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10083 to 9881. [2018-11-07 15:14:39,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9881 states. [2018-11-07 15:14:39,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9881 states to 9881 states and 12497 transitions. [2018-11-07 15:14:39,302 INFO L78 Accepts]: Start accepts. Automaton has 9881 states and 12497 transitions. Word has length 177 [2018-11-07 15:14:39,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:14:39,303 INFO L480 AbstractCegarLoop]: Abstraction has 9881 states and 12497 transitions. [2018-11-07 15:14:39,303 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 15:14:39,303 INFO L276 IsEmpty]: Start isEmpty. Operand 9881 states and 12497 transitions. [2018-11-07 15:14:39,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2018-11-07 15:14:39,312 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:14:39,312 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, 2, 2, 2, 2, 2, 2, 2, 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 15:14:39,313 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:14:39,313 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:14:39,313 INFO L82 PathProgramCache]: Analyzing trace with hash 933056982, now seen corresponding path program 1 times [2018-11-07 15:14:39,313 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:14:39,314 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:14:39,315 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:14:39,315 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:14:39,315 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:14:39,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:14:39,638 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-11-07 15:14:39,638 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:14:39,638 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 15:14:39,639 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:14:39,639 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 15:14:39,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 15:14:39,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 15:14:39,640 INFO L87 Difference]: Start difference. First operand 9881 states and 12497 transitions. Second operand 4 states. [2018-11-07 15:14:44,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:14:44,086 INFO L93 Difference]: Finished difference Result 27823 states and 37308 transitions. [2018-11-07 15:14:44,086 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 15:14:44,086 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 205 [2018-11-07 15:14:44,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:14:44,159 INFO L225 Difference]: With dead ends: 27823 [2018-11-07 15:14:44,160 INFO L226 Difference]: Without dead ends: 17948 [2018-11-07 15:14:44,215 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 15:14:44,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17948 states. [2018-11-07 15:14:44,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17948 to 17323. [2018-11-07 15:14:44,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17323 states. [2018-11-07 15:14:44,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17323 states to 17323 states and 21277 transitions. [2018-11-07 15:14:44,578 INFO L78 Accepts]: Start accepts. Automaton has 17323 states and 21277 transitions. Word has length 205 [2018-11-07 15:14:44,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:14:44,578 INFO L480 AbstractCegarLoop]: Abstraction has 17323 states and 21277 transitions. [2018-11-07 15:14:44,578 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 15:14:44,579 INFO L276 IsEmpty]: Start isEmpty. Operand 17323 states and 21277 transitions. [2018-11-07 15:14:44,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2018-11-07 15:14:44,589 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:14:44,589 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 15:14:44,589 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:14:44,590 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:14:44,590 INFO L82 PathProgramCache]: Analyzing trace with hash -75498616, now seen corresponding path program 1 times [2018-11-07 15:14:44,590 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:14:44,591 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:14:44,591 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:14:44,591 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:14:44,591 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:14:44,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:14:44,817 WARN L179 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 3 [2018-11-07 15:14:44,846 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-11-07 15:14:44,846 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:14:44,847 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 15:14:44,847 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:14:44,847 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 15:14:44,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 15:14:44,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 15:14:44,848 INFO L87 Difference]: Start difference. First operand 17323 states and 21277 transitions. Second operand 3 states. [2018-11-07 15:14:47,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:14:47,783 INFO L93 Difference]: Finished difference Result 40319 states and 50745 transitions. [2018-11-07 15:14:47,786 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 15:14:47,786 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 218 [2018-11-07 15:14:47,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:14:47,873 INFO L225 Difference]: With dead ends: 40319 [2018-11-07 15:14:47,873 INFO L226 Difference]: Without dead ends: 23002 [2018-11-07 15:14:47,929 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 15:14:47,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23002 states. [2018-11-07 15:14:48,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23002 to 22945. [2018-11-07 15:14:48,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22945 states. [2018-11-07 15:14:48,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22945 states to 22945 states and 28701 transitions. [2018-11-07 15:14:48,436 INFO L78 Accepts]: Start accepts. Automaton has 22945 states and 28701 transitions. Word has length 218 [2018-11-07 15:14:48,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:14:48,436 INFO L480 AbstractCegarLoop]: Abstraction has 22945 states and 28701 transitions. [2018-11-07 15:14:48,437 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 15:14:48,437 INFO L276 IsEmpty]: Start isEmpty. Operand 22945 states and 28701 transitions. [2018-11-07 15:14:48,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2018-11-07 15:14:48,454 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:14:48,454 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 15:14:48,454 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:14:48,455 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:14:48,455 INFO L82 PathProgramCache]: Analyzing trace with hash 976466900, now seen corresponding path program 1 times [2018-11-07 15:14:48,455 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:14:48,456 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:14:48,456 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:14:48,456 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:14:48,456 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:14:48,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:14:49,157 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 91 proven. 2 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-11-07 15:14:49,158 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 15:14:49,158 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 15:14:49,160 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 232 with the following transitions: [2018-11-07 15:14:49,169 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], [337], [345], [353], [361], [369], [373], [375], [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], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [714], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 15:14:49,252 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 15:14:49,252 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 15:14:49,845 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 15:14:49,847 INFO L272 AbstractInterpreter]: Visited 105 different actions 105 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 15:14:50,102 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:14:50,103 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 15:14:50,614 INFO L227 lantSequenceWeakener]: Weakened 222 states. On average, predicates are now at 77.91% of their original sizes. [2018-11-07 15:14:50,614 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 15:14:51,105 INFO L415 sIntCurrentIteration]: We unified 230 AI predicates to 230 [2018-11-07 15:14:51,105 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 15:14:51,106 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 15:14:51,107 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2018-11-07 15:14:51,107 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:14:51,107 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-07 15:14:51,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-07 15:14:51,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-11-07 15:14:51,108 INFO L87 Difference]: Start difference. First operand 22945 states and 28701 transitions. Second operand 8 states. [2018-11-07 15:14:55,093 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