java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem19_label19_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 23:53:58,916 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 23:53:58,921 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 23:53:58,936 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 23:53:58,937 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 23:53:58,938 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 23:53:58,939 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 23:53:58,941 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 23:53:58,943 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 23:53:58,943 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 23:53:58,944 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 23:53:58,945 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 23:53:58,946 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 23:53:58,947 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 23:53:58,948 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 23:53:58,949 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 23:53:58,949 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 23:53:58,951 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 23:53:58,954 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 23:53:58,955 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 23:53:58,956 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 23:53:58,958 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 23:53:58,965 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 23:53:58,974 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-10-24 23:53:58,993 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 23:53:58,993 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 23:53:58,994 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 23:53:58,994 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 23:53:58,994 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 23:53:58,994 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 23:53:58,995 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-24 23:53:58,995 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 23:53:58,995 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-24 23:53:58,995 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 23:53:58,995 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 23:53:58,995 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 23:53:58,996 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 23:53:58,997 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 23:53:58,997 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 23:53:58,998 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 23:53:58,998 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 23:53:58,998 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 23:53:58,998 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 23:53:58,998 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 23:53:58,998 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 23:53:58,999 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 23:53:59,000 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 23:53:59,000 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 23:53:59,001 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 23:53:59,001 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 23:53:59,001 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 23:53:59,001 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 23:53:59,001 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 23:53:59,002 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 23:53:59,002 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 23:53:59,003 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 23:53:59,003 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 23:53:59,003 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 23:53:59,003 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 23:53:59,003 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 23:53:59,068 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 23:53:59,081 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 23:53:59,086 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 23:53:59,088 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 23:53:59,088 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 23:53:59,089 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label19_false-unreach-call.c [2018-10-24 23:53:59,147 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/62604de21/a9d7a9cdb0c045c48f5448de4a32ad12/FLAG8a434eca1 [2018-10-24 23:54:00,078 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 23:54:00,081 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label19_false-unreach-call.c [2018-10-24 23:54:00,128 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/62604de21/a9d7a9cdb0c045c48f5448de4a32ad12/FLAG8a434eca1 [2018-10-24 23:54:00,148 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/62604de21/a9d7a9cdb0c045c48f5448de4a32ad12 [2018-10-24 23:54:00,164 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 23:54:00,165 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 23:54:00,169 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 23:54:00,171 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 23:54:00,175 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 23:54:00,178 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:54:00" (1/1) ... [2018-10-24 23:54:00,181 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46764b1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:54:00, skipping insertion in model container [2018-10-24 23:54:00,181 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:54:00" (1/1) ... [2018-10-24 23:54:00,193 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 23:54:00,452 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 23:54:02,328 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 23:54:02,335 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 23:54:03,391 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 23:54:03,443 INFO L193 MainTranslator]: Completed translation [2018-10-24 23:54:03,444 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:54:03 WrapperNode [2018-10-24 23:54:03,444 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 23:54:03,446 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 23:54:03,446 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 23:54:03,446 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 23:54:03,457 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:54:03" (1/1) ... [2018-10-24 23:54:03,564 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:54:03" (1/1) ... [2018-10-24 23:54:04,172 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 23:54:04,172 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 23:54:04,172 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 23:54:04,173 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 23:54:04,184 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:54:03" (1/1) ... [2018-10-24 23:54:04,184 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:54:03" (1/1) ... [2018-10-24 23:54:04,264 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:54:03" (1/1) ... [2018-10-24 23:54:04,264 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:54:03" (1/1) ... [2018-10-24 23:54:04,452 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:54:03" (1/1) ... [2018-10-24 23:54:04,495 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:54:03" (1/1) ... [2018-10-24 23:54:04,559 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:54:03" (1/1) ... [2018-10-24 23:54:04,624 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 23:54:04,625 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 23:54:04,625 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 23:54:04,625 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 23:54:04,626 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:54:03" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-24 23:54:04,694 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 23:54:04,694 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 23:54:04,694 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2018-10-24 23:54:04,695 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2018-10-24 23:54:04,695 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2018-10-24 23:54:04,695 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2018-10-24 23:54:04,695 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-24 23:54:04,696 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-24 23:54:04,696 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-24 23:54:04,696 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-24 23:54:04,696 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 23:54:04,696 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 23:54:04,696 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 23:54:04,697 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 23:54:04,697 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 23:54:04,698 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 23:54:04,698 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 23:54:04,698 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 23:54:23,318 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 23:54:23,319 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:54:23 BoogieIcfgContainer [2018-10-24 23:54:23,319 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 23:54:23,321 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 23:54:23,321 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 23:54:23,324 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 23:54:23,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 11:54:00" (1/3) ... [2018-10-24 23:54:23,325 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b1d8c25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:54:23, skipping insertion in model container [2018-10-24 23:54:23,326 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:54:03" (2/3) ... [2018-10-24 23:54:23,326 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b1d8c25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:54:23, skipping insertion in model container [2018-10-24 23:54:23,326 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:54:23" (3/3) ... [2018-10-24 23:54:23,328 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label19_false-unreach-call.c [2018-10-24 23:54:23,339 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 23:54:23,350 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 23:54:23,369 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 23:54:23,420 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 23:54:23,421 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 23:54:23,421 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 23:54:23,421 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 23:54:23,421 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 23:54:23,421 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 23:54:23,421 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 23:54:23,422 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 23:54:23,480 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states. [2018-10-24 23:54:23,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-10-24 23:54:23,488 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:54:23,489 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] [2018-10-24 23:54:23,491 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:54:23,497 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:54:23,498 INFO L82 PathProgramCache]: Analyzing trace with hash -316580422, now seen corresponding path program 1 times [2018-10-24 23:54:23,501 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:54:23,554 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:54:23,554 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:54:23,554 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:54:23,555 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:54:23,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:54:23,898 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 23:54:24,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 23:54:24,040 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 23:54:24,040 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 23:54:24,041 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 23:54:24,046 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 23:54:24,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 23:54:24,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 23:54:24,088 INFO L87 Difference]: Start difference. First operand 1778 states. Second operand 3 states. [2018-10-24 23:54:45,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:54:45,719 INFO L93 Difference]: Finished difference Result 5049 states and 9513 transitions. [2018-10-24 23:54:45,720 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 23:54:45,721 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2018-10-24 23:54:45,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:54:45,765 INFO L225 Difference]: With dead ends: 5049 [2018-10-24 23:54:45,765 INFO L226 Difference]: Without dead ends: 3269 [2018-10-24 23:54:45,778 INFO L605 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 [2018-10-24 23:54:45,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3269 states. [2018-10-24 23:54:45,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3269 to 3218. [2018-10-24 23:54:45,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3218 states. [2018-10-24 23:54:45,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3218 states to 3218 states and 5997 transitions. [2018-10-24 23:54:45,987 INFO L78 Accepts]: Start accepts. Automaton has 3218 states and 5997 transitions. Word has length 31 [2018-10-24 23:54:45,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:54:45,988 INFO L481 AbstractCegarLoop]: Abstraction has 3218 states and 5997 transitions. [2018-10-24 23:54:45,988 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 23:54:45,988 INFO L276 IsEmpty]: Start isEmpty. Operand 3218 states and 5997 transitions. [2018-10-24 23:54:45,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2018-10-24 23:54:45,998 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:54:45,998 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 23:54:45,999 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:54:45,999 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:54:45,999 INFO L82 PathProgramCache]: Analyzing trace with hash 1827341156, now seen corresponding path program 1 times [2018-10-24 23:54:45,999 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:54:46,000 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:54:46,001 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:54:46,002 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:54:46,003 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:54:46,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:54:46,352 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 23:54:46,352 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 23:54:46,352 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 23:54:46,353 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 23:54:46,354 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 23:54:46,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 23:54:46,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 23:54:46,355 INFO L87 Difference]: Start difference. First operand 3218 states and 5997 transitions. Second operand 6 states. [2018-10-24 23:55:15,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:55:15,263 INFO L93 Difference]: Finished difference Result 12137 states and 23144 transitions. [2018-10-24 23:55:15,264 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 23:55:15,264 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 103 [2018-10-24 23:55:15,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:55:15,326 INFO L225 Difference]: With dead ends: 12137 [2018-10-24 23:55:15,326 INFO L226 Difference]: Without dead ends: 8925 [2018-10-24 23:55:15,342 INFO L605 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 [2018-10-24 23:55:15,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8925 states. [2018-10-24 23:55:15,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8925 to 8862. [2018-10-24 23:55:15,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8862 states. [2018-10-24 23:55:15,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8862 states to 8862 states and 14404 transitions. [2018-10-24 23:55:15,604 INFO L78 Accepts]: Start accepts. Automaton has 8862 states and 14404 transitions. Word has length 103 [2018-10-24 23:55:15,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:55:15,604 INFO L481 AbstractCegarLoop]: Abstraction has 8862 states and 14404 transitions. [2018-10-24 23:55:15,604 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 23:55:15,605 INFO L276 IsEmpty]: Start isEmpty. Operand 8862 states and 14404 transitions. [2018-10-24 23:55:15,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2018-10-24 23:55:15,610 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:55:15,613 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 23:55:15,614 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:55:15,614 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:55:15,614 INFO L82 PathProgramCache]: Analyzing trace with hash 478615574, now seen corresponding path program 1 times [2018-10-24 23:55:15,614 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:55:15,616 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:55:15,617 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:55:15,617 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:55:15,617 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:55:15,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:55:16,016 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 23:55:16,017 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 23:55:16,017 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 23:55:16,017 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 23:55:16,018 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 23:55:16,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 23:55:16,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 23:55:16,019 INFO L87 Difference]: Start difference. First operand 8862 states and 14404 transitions. Second operand 5 states. [2018-10-24 23:55:56,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:55:56,248 INFO L93 Difference]: Finished difference Result 32230 states and 52865 transitions. [2018-10-24 23:55:56,249 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 23:55:56,249 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 105 [2018-10-24 23:55:56,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:55:56,345 INFO L225 Difference]: With dead ends: 32230 [2018-10-24 23:55:56,345 INFO L226 Difference]: Without dead ends: 23374 [2018-10-24 23:55:56,382 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 23:55:56,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23374 states. [2018-10-24 23:55:56,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23374 to 23190. [2018-10-24 23:55:56,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23190 states. [2018-10-24 23:55:56,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23190 states to 23190 states and 32180 transitions. [2018-10-24 23:55:56,927 INFO L78 Accepts]: Start accepts. Automaton has 23190 states and 32180 transitions. Word has length 105 [2018-10-24 23:55:56,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:55:56,928 INFO L481 AbstractCegarLoop]: Abstraction has 23190 states and 32180 transitions. [2018-10-24 23:55:56,928 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 23:55:56,928 INFO L276 IsEmpty]: Start isEmpty. Operand 23190 states and 32180 transitions. [2018-10-24 23:55:56,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-10-24 23:55:56,930 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:55:56,931 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 23:55:56,935 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:55:56,935 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:55:56,935 INFO L82 PathProgramCache]: Analyzing trace with hash -727238078, now seen corresponding path program 1 times [2018-10-24 23:55:56,936 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:55:56,936 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:55:56,936 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:55:56,937 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:55:56,937 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:55:56,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:55:57,238 WARN L179 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 23:55:57,576 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 23:55:57,577 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 23:55:57,577 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 23:55:57,577 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 23:55:57,579 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 23:55:57,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 23:55:57,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 23:55:57,580 INFO L87 Difference]: Start difference. First operand 23190 states and 32180 transitions. Second operand 6 states. [2018-10-24 23:56:20,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:56:20,499 INFO L93 Difference]: Finished difference Result 54270 states and 78217 transitions. [2018-10-24 23:56:20,500 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 23:56:20,500 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 110 [2018-10-24 23:56:20,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:56:20,621 INFO L225 Difference]: With dead ends: 54270 [2018-10-24 23:56:20,622 INFO L226 Difference]: Without dead ends: 31086 [2018-10-24 23:56:20,675 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 23:56:20,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31086 states. [2018-10-24 23:56:21,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31086 to 30825. [2018-10-24 23:56:21,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30825 states. [2018-10-24 23:56:21,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30825 states to 30825 states and 42918 transitions. [2018-10-24 23:56:21,419 INFO L78 Accepts]: Start accepts. Automaton has 30825 states and 42918 transitions. Word has length 110 [2018-10-24 23:56:21,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:56:21,420 INFO L481 AbstractCegarLoop]: Abstraction has 30825 states and 42918 transitions. [2018-10-24 23:56:21,420 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 23:56:21,420 INFO L276 IsEmpty]: Start isEmpty. Operand 30825 states and 42918 transitions. [2018-10-24 23:56:21,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2018-10-24 23:56:21,425 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:56:21,425 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 23:56:21,425 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:56:21,426 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:56:21,426 INFO L82 PathProgramCache]: Analyzing trace with hash 340192155, now seen corresponding path program 1 times [2018-10-24 23:56:21,426 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:56:21,427 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:56:21,427 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:56:21,427 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:56:21,427 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:56:21,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:56:21,753 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 23:56:21,753 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 23:56:21,753 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 23:56:21,754 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 23:56:21,754 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 23:56:21,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 23:56:21,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 23:56:21,755 INFO L87 Difference]: Start difference. First operand 30825 states and 42918 transitions. Second operand 5 states. [2018-10-24 23:56:52,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:56:52,604 INFO L93 Difference]: Finished difference Result 91377 states and 134389 transitions. [2018-10-24 23:56:52,610 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 23:56:52,610 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 160 [2018-10-24 23:56:52,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:56:52,821 INFO L225 Difference]: With dead ends: 91377 [2018-10-24 23:56:52,822 INFO L226 Difference]: Without dead ends: 60558 [2018-10-24 23:56:52,885 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 23:56:52,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60558 states. [2018-10-24 23:56:54,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60558 to 59353. [2018-10-24 23:56:54,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59353 states. [2018-10-24 23:56:54,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59353 states to 59353 states and 79172 transitions. [2018-10-24 23:56:54,383 INFO L78 Accepts]: Start accepts. Automaton has 59353 states and 79172 transitions. Word has length 160 [2018-10-24 23:56:54,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:56:54,384 INFO L481 AbstractCegarLoop]: Abstraction has 59353 states and 79172 transitions. [2018-10-24 23:56:54,384 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 23:56:54,384 INFO L276 IsEmpty]: Start isEmpty. Operand 59353 states and 79172 transitions. [2018-10-24 23:56:54,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-10-24 23:56:54,389 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:56:54,389 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 23:56:54,389 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:56:54,389 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:56:54,390 INFO L82 PathProgramCache]: Analyzing trace with hash 378808406, now seen corresponding path program 1 times [2018-10-24 23:56:54,390 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:56:54,390 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:56:54,391 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:56:54,391 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:56:54,391 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:56:54,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:56:54,673 WARN L179 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 23:56:54,859 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 23:56:54,859 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 23:56:54,859 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 23:56:54,859 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 23:56:54,860 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 23:56:54,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 23:56:54,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 23:56:54,861 INFO L87 Difference]: Start difference. First operand 59353 states and 79172 transitions. Second operand 6 states. [2018-10-24 23:57:18,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:57:18,895 INFO L93 Difference]: Finished difference Result 148301 states and 209529 transitions. [2018-10-24 23:57:18,896 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 23:57:18,896 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 170 [2018-10-24 23:57:18,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:57:19,248 INFO L225 Difference]: With dead ends: 148301 [2018-10-24 23:57:19,248 INFO L226 Difference]: Without dead ends: 88954 [2018-10-24 23:57:19,386 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 23:57:19,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88954 states. [2018-10-24 23:57:21,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88954 to 88472. [2018-10-24 23:57:21,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88472 states. [2018-10-24 23:57:21,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88472 states to 88472 states and 116660 transitions. [2018-10-24 23:57:21,654 INFO L78 Accepts]: Start accepts. Automaton has 88472 states and 116660 transitions. Word has length 170 [2018-10-24 23:57:21,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:57:21,654 INFO L481 AbstractCegarLoop]: Abstraction has 88472 states and 116660 transitions. [2018-10-24 23:57:21,655 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 23:57:21,655 INFO L276 IsEmpty]: Start isEmpty. Operand 88472 states and 116660 transitions. [2018-10-24 23:57:21,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2018-10-24 23:57:21,664 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:57:21,664 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 23:57:21,664 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:57:21,664 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:57:21,665 INFO L82 PathProgramCache]: Analyzing trace with hash -170738894, now seen corresponding path program 1 times [2018-10-24 23:57:21,665 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:57:21,666 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:57:21,666 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:57:21,666 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:57:21,666 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:57:21,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:57:22,202 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 48 proven. 85 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 23:57:22,203 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 23:57:22,203 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 23:57:22,204 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 213 with the following transitions: [2018-10-24 23:57:22,207 INFO L202 CegarAbsIntRunner]: [0], [1], [5227], [5234], [5242], [5250], [5258], [5266], [5274], [5282], [5290], [5298], [5306], [5314], [5322], [5330], [5338], [5346], [5354], [5362], [5370], [5374], [5376], [5379], [5387], [5395], [5403], [5411], [5419], [5427], [5435], [5443], [5451], [5459], [5467], [5475], [5483], [5491], [5499], [5507], [5515], [5523], [5531], [5539], [5547], [5555], [5563], [5571], [5579], [5587], [5595], [5603], [5611], [5619], [5627], [5635], [5643], [5651], [5659], [5667], [5675], [5683], [5691], [5699], [5707], [5715], [5727], [5731], [5742], [5746], [5750], [5754], [5758], [5762], [5766], [5770], [5774], [5778], [5782], [5786], [5797], [5808], [5819], [5823], [5827], [5838], [5841], [5842], [5845], [6802], [6806], [6810], [6816], [6820], [6822], [6837], [6838], [6839], [6841], [6842] [2018-10-24 23:57:22,303 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-24 23:57:22,304 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 23:57:22,762 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 23:57:22,764 INFO L272 AbstractInterpreter]: Visited 96 different actions 96 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-10-24 23:57:22,807 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:57:22,808 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 23:57:23,339 INFO L232 lantSequenceWeakener]: Weakened 203 states. On average, predicates are now at 75.23% of their original sizes. [2018-10-24 23:57:23,340 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 23:57:23,595 INFO L413 sIntCurrentIteration]: We have 211 unified AI predicates [2018-10-24 23:57:23,595 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 23:57:23,596 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 23:57:23,596 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2018-10-24 23:57:23,596 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 23:57:23,597 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 23:57:23,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 23:57:23,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 23:57:23,598 INFO L87 Difference]: Start difference. First operand 88472 states and 116660 transitions. Second operand 6 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown