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_label45_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 15:24:05,827 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 15:24:05,832 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 15:24:05,844 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 15:24:05,844 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 15:24:05,845 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 15:24:05,847 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 15:24:05,848 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 15:24:05,850 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 15:24:05,851 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 15:24:05,852 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 15:24:05,852 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 15:24:05,853 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 15:24:05,854 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 15:24:05,855 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 15:24:05,856 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 15:24:05,856 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 15:24:05,858 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 15:24:05,860 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 15:24:05,862 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 15:24:05,863 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 15:24:05,864 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 15:24:05,867 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 15:24:05,867 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 15:24:05,868 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 15:24:05,868 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 15:24:05,869 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 15:24:05,870 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 15:24:05,871 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 15:24:05,872 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 15:24:05,872 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 15:24:05,873 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-11-07 15:24:05,876 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 15:24:05,906 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 15:24:05,907 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 15:24:05,907 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 15:24:05,908 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 15:24:05,908 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 15:24:05,908 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 15:24:05,908 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 15:24:05,908 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 15:24:05,909 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 15:24:05,909 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 15:24:05,909 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 15:24:05,909 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 15:24:05,910 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 15:24:05,910 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 15:24:05,910 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 15:24:05,911 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 15:24:05,911 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 15:24:05,911 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 15:24:05,911 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 15:24:05,911 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 15:24:05,912 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 15:24:05,912 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 15:24:05,912 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 15:24:05,912 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 15:24:05,912 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 15:24:05,912 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 15:24:05,913 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 15:24:05,913 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 15:24:05,913 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 15:24:05,913 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 15:24:05,913 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 15:24:05,914 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 15:24:05,914 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 15:24:05,914 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 15:24:05,960 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 15:24:05,977 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 15:24:05,983 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 15:24:05,984 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 15:24:05,985 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 15:24:05,986 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label45_true-unreach-call.c [2018-11-07 15:24:06,053 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d052b49ed/28ec2c59216040bd8444909f8223aee9/FLAG1a4a97bc3 [2018-11-07 15:24:06,680 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 15:24:06,681 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label45_true-unreach-call.c [2018-11-07 15:24:06,703 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d052b49ed/28ec2c59216040bd8444909f8223aee9/FLAG1a4a97bc3 [2018-11-07 15:24:06,722 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d052b49ed/28ec2c59216040bd8444909f8223aee9 [2018-11-07 15:24:06,734 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 15:24:06,735 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 15:24:06,736 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 15:24:06,737 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 15:24:06,741 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 15:24:06,742 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:24:06" (1/1) ... [2018-11-07 15:24:06,745 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2fd4ad97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:24:06, skipping insertion in model container [2018-11-07 15:24:06,745 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:24:06" (1/1) ... [2018-11-07 15:24:06,756 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 15:24:06,858 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 15:24:07,818 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 15:24:07,824 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 15:24:08,034 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 15:24:08,063 INFO L193 MainTranslator]: Completed translation [2018-11-07 15:24:08,064 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:24:08 WrapperNode [2018-11-07 15:24:08,064 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 15:24:08,065 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 15:24:08,065 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 15:24:08,066 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 15:24:08,074 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:24:08" (1/1) ... [2018-11-07 15:24:08,245 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:24:08" (1/1) ... [2018-11-07 15:24:08,264 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 15:24:08,264 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 15:24:08,265 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 15:24:08,268 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 15:24:08,281 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:24:08" (1/1) ... [2018-11-07 15:24:08,281 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:24:08" (1/1) ... [2018-11-07 15:24:08,293 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:24:08" (1/1) ... [2018-11-07 15:24:08,295 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:24:08" (1/1) ... [2018-11-07 15:24:08,356 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:24:08" (1/1) ... [2018-11-07 15:24:08,373 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:24:08" (1/1) ... [2018-11-07 15:24:08,386 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:24:08" (1/1) ... [2018-11-07 15:24:08,402 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 15:24:08,402 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 15:24:08,403 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 15:24:08,403 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 15:24:08,404 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:24:08" (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 15:24:08,482 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 15:24:08,482 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 15:24:08,482 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 15:24:08,482 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 15:24:08,483 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 15:24:08,483 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 15:24:08,484 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 15:24:08,484 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 15:24:08,484 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 15:24:08,484 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 15:24:08,484 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 15:24:14,945 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 15:24:14,946 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:24:14 BoogieIcfgContainer [2018-11-07 15:24:14,946 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 15:24:14,947 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 15:24:14,947 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 15:24:14,951 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 15:24:14,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 03:24:06" (1/3) ... [2018-11-07 15:24:14,952 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cd4ddd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:24:14, skipping insertion in model container [2018-11-07 15:24:14,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:24:08" (2/3) ... [2018-11-07 15:24:14,953 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cd4ddd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:24:14, skipping insertion in model container [2018-11-07 15:24:14,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:24:14" (3/3) ... [2018-11-07 15:24:14,955 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label45_true-unreach-call.c [2018-11-07 15:24:14,965 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 15:24:14,973 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 15:24:14,988 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 15:24:15,029 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 15:24:15,030 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 15:24:15,030 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 15:24:15,030 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 15:24:15,030 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 15:24:15,031 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 15:24:15,031 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 15:24:15,031 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 15:24:15,070 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states. [2018-11-07 15:24:15,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-11-07 15:24:15,084 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:24:15,086 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 15:24:15,090 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:24:15,096 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:24:15,097 INFO L82 PathProgramCache]: Analyzing trace with hash -1570242596, now seen corresponding path program 1 times [2018-11-07 15:24:15,099 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:24:15,148 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:24:15,148 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:24:15,148 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:24:15,148 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:24:15,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:24:15,628 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 15:24:15,630 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:24:15,631 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 15:24:15,631 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:24:15,637 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 15:24:15,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 15:24:15,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 15:24:15,657 INFO L87 Difference]: Start difference. First operand 410 states. Second operand 4 states. [2018-11-07 15:24:21,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:24:21,373 INFO L93 Difference]: Finished difference Result 1513 states and 2838 transitions. [2018-11-07 15:24:21,375 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 15:24:21,376 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 60 [2018-11-07 15:24:21,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:24:21,402 INFO L225 Difference]: With dead ends: 1513 [2018-11-07 15:24:21,403 INFO L226 Difference]: Without dead ends: 1097 [2018-11-07 15:24:21,415 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 15:24:21,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1097 states. [2018-11-07 15:24:21,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1097 to 744. [2018-11-07 15:24:21,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-11-07 15:24:21,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1301 transitions. [2018-11-07 15:24:21,553 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1301 transitions. Word has length 60 [2018-11-07 15:24:21,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:24:21,553 INFO L480 AbstractCegarLoop]: Abstraction has 744 states and 1301 transitions. [2018-11-07 15:24:21,554 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 15:24:21,554 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1301 transitions. [2018-11-07 15:24:21,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-11-07 15:24:21,567 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:24:21,568 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 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 15:24:21,568 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:24:21,569 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:24:21,569 INFO L82 PathProgramCache]: Analyzing trace with hash -1372196061, now seen corresponding path program 1 times [2018-11-07 15:24:21,569 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:24:21,571 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:24:21,571 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:24:21,571 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:24:21,572 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:24:21,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:24:21,900 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 15:24:21,979 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:24:21,979 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:24:21,979 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 15:24:21,980 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:24:21,982 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 15:24:21,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 15:24:21,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 15:24:21,983 INFO L87 Difference]: Start difference. First operand 744 states and 1301 transitions. Second operand 6 states. [2018-11-07 15:24:26,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:24:26,411 INFO L93 Difference]: Finished difference Result 2196 states and 3924 transitions. [2018-11-07 15:24:26,418 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 15:24:26,418 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 131 [2018-11-07 15:24:26,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:24:26,430 INFO L225 Difference]: With dead ends: 2196 [2018-11-07 15:24:26,431 INFO L226 Difference]: Without dead ends: 1458 [2018-11-07 15:24:26,435 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 15:24:26,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1458 states. [2018-11-07 15:24:26,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1458 to 1438. [2018-11-07 15:24:26,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1438 states. [2018-11-07 15:24:26,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1438 states to 1438 states and 2463 transitions. [2018-11-07 15:24:26,493 INFO L78 Accepts]: Start accepts. Automaton has 1438 states and 2463 transitions. Word has length 131 [2018-11-07 15:24:26,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:24:26,494 INFO L480 AbstractCegarLoop]: Abstraction has 1438 states and 2463 transitions. [2018-11-07 15:24:26,494 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 15:24:26,494 INFO L276 IsEmpty]: Start isEmpty. Operand 1438 states and 2463 transitions. [2018-11-07 15:24:26,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-11-07 15:24:26,498 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:24:26,498 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 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 15:24:26,499 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:24:26,499 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:24:26,499 INFO L82 PathProgramCache]: Analyzing trace with hash 822565126, now seen corresponding path program 1 times [2018-11-07 15:24:26,499 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:24:26,500 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:24:26,500 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:24:26,501 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:24:26,501 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:24:26,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:24:26,663 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:24:26,664 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:24:26,664 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 15:24:26,664 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:24:26,665 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 15:24:26,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 15:24:26,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 15:24:26,665 INFO L87 Difference]: Start difference. First operand 1438 states and 2463 transitions. Second operand 5 states. [2018-11-07 15:24:30,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:24:30,792 INFO L93 Difference]: Finished difference Result 3597 states and 6200 transitions. [2018-11-07 15:24:30,803 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 15:24:30,803 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 132 [2018-11-07 15:24:30,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:24:30,819 INFO L225 Difference]: With dead ends: 3597 [2018-11-07 15:24:30,820 INFO L226 Difference]: Without dead ends: 2165 [2018-11-07 15:24:30,827 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 15:24:30,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2165 states. [2018-11-07 15:24:30,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2165 to 2145. [2018-11-07 15:24:30,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2145 states. [2018-11-07 15:24:30,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2145 states to 2145 states and 3126 transitions. [2018-11-07 15:24:30,902 INFO L78 Accepts]: Start accepts. Automaton has 2145 states and 3126 transitions. Word has length 132 [2018-11-07 15:24:30,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:24:30,903 INFO L480 AbstractCegarLoop]: Abstraction has 2145 states and 3126 transitions. [2018-11-07 15:24:30,903 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 15:24:30,903 INFO L276 IsEmpty]: Start isEmpty. Operand 2145 states and 3126 transitions. [2018-11-07 15:24:30,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2018-11-07 15:24:30,907 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:24:30,908 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:24:30,908 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:24:30,908 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:24:30,908 INFO L82 PathProgramCache]: Analyzing trace with hash 9848590, now seen corresponding path program 1 times [2018-11-07 15:24:30,909 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:24:30,910 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:24:30,910 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:24:30,910 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:24:30,910 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:24:30,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:24:31,350 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:24:31,351 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:24:31,351 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 15:24:31,351 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:24:31,352 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 15:24:31,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 15:24:31,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 15:24:31,353 INFO L87 Difference]: Start difference. First operand 2145 states and 3126 transitions. Second operand 6 states. [2018-11-07 15:24:35,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:24:35,302 INFO L93 Difference]: Finished difference Result 7058 states and 10436 transitions. [2018-11-07 15:24:35,311 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 15:24:35,311 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 224 [2018-11-07 15:24:35,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:24:35,342 INFO L225 Difference]: With dead ends: 7058 [2018-11-07 15:24:35,342 INFO L226 Difference]: Without dead ends: 4919 [2018-11-07 15:24:35,361 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 15:24:35,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4919 states. [2018-11-07 15:24:35,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4919 to 4879. [2018-11-07 15:24:35,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4879 states. [2018-11-07 15:24:35,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4879 states to 4879 states and 6857 transitions. [2018-11-07 15:24:35,507 INFO L78 Accepts]: Start accepts. Automaton has 4879 states and 6857 transitions. Word has length 224 [2018-11-07 15:24:35,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:24:35,507 INFO L480 AbstractCegarLoop]: Abstraction has 4879 states and 6857 transitions. [2018-11-07 15:24:35,508 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 15:24:35,508 INFO L276 IsEmpty]: Start isEmpty. Operand 4879 states and 6857 transitions. [2018-11-07 15:24:35,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2018-11-07 15:24:35,513 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:24:35,513 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:24:35,513 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:24:35,514 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:24:35,514 INFO L82 PathProgramCache]: Analyzing trace with hash 433783590, now seen corresponding path program 1 times [2018-11-07 15:24:35,514 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:24:35,515 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:24:35,515 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:24:35,515 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:24:35,515 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:24:35,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:24:35,864 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 15:24:36,348 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:24:36,349 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:24:36,349 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 15:24:36,349 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:24:36,350 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 15:24:36,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 15:24:36,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 15:24:36,351 INFO L87 Difference]: Start difference. First operand 4879 states and 6857 transitions. Second operand 6 states. [2018-11-07 15:24:40,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:24:40,015 INFO L93 Difference]: Finished difference Result 12216 states and 17406 transitions. [2018-11-07 15:24:40,018 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 15:24:40,018 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 244 [2018-11-07 15:24:40,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:24:40,053 INFO L225 Difference]: With dead ends: 12216 [2018-11-07 15:24:40,053 INFO L226 Difference]: Without dead ends: 7343 [2018-11-07 15:24:40,083 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 15:24:40,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7343 states. [2018-11-07 15:24:40,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7343 to 7306. [2018-11-07 15:24:40,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7306 states. [2018-11-07 15:24:40,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7306 states to 7306 states and 9825 transitions. [2018-11-07 15:24:40,259 INFO L78 Accepts]: Start accepts. Automaton has 7306 states and 9825 transitions. Word has length 244 [2018-11-07 15:24:40,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:24:40,260 INFO L480 AbstractCegarLoop]: Abstraction has 7306 states and 9825 transitions. [2018-11-07 15:24:40,260 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 15:24:40,260 INFO L276 IsEmpty]: Start isEmpty. Operand 7306 states and 9825 transitions. [2018-11-07 15:24:40,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2018-11-07 15:24:40,277 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:24:40,277 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:24:40,277 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:24:40,278 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:24:40,278 INFO L82 PathProgramCache]: Analyzing trace with hash -860566542, now seen corresponding path program 1 times [2018-11-07 15:24:40,278 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:24:40,279 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:24:40,279 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:24:40,279 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:24:40,279 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:24:40,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:24:41,724 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 184 proven. 37 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2018-11-07 15:24:41,725 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 15:24:41,725 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 15:24:41,726 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 425 with the following transitions: [2018-11-07 15:24:41,728 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [539], [547], [555], [559], [561], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [672], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [912], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [973], [977], [981], [985], [989], [993], [997], [1001], [1005], [1009], [1013], [1017], [1021], [1025], [1029], [1033], [1037], [1041], [1045], [1048], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 15:24:41,791 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 15:24:41,791 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 15:24:42,914 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 15:24:42,916 INFO L272 AbstractInterpreter]: Visited 170 different actions 170 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 15:24:42,960 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:24:42,961 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 15:24:44,303 INFO L227 lantSequenceWeakener]: Weakened 396 states. On average, predicates are now at 77.81% of their original sizes. [2018-11-07 15:24:44,303 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 15:24:47,736 INFO L415 sIntCurrentIteration]: We unified 423 AI predicates to 423 [2018-11-07 15:24:47,736 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 15:24:47,737 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 15:24:47,737 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [8] total 17 [2018-11-07 15:24:47,738 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:24:47,738 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-07 15:24:47,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-07 15:24:47,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-11-07 15:24:47,739 INFO L87 Difference]: Start difference. First operand 7306 states and 9825 transitions. Second operand 11 states. [2018-11-07 15:24:52,916 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