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-INT.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem16_label03_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 11:44:28,527 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 11:44:28,530 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 11:44:28,546 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 11:44:28,547 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 11:44:28,548 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 11:44:28,550 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 11:44:28,552 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 11:44:28,555 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 11:44:28,556 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 11:44:28,564 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 11:44:28,564 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 11:44:28,565 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 11:44:28,566 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 11:44:28,569 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 11:44:28,570 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 11:44:28,571 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 11:44:28,574 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 11:44:28,578 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 11:44:28,580 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 11:44:28,581 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 11:44:28,584 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 11:44:28,586 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 11:44:28,586 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 11:44:28,587 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 11:44:28,588 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 11:44:28,589 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 11:44:28,589 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 11:44:28,592 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 11:44:28,595 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 11:44:28,595 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 11:44:28,596 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 11:44:28,596 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 11:44:28,596 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 11:44:28,598 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 11:44:28,599 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 11:44:28,599 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf [2018-10-27 11:44:28,625 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 11:44:28,625 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 11:44:28,626 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 11:44:28,626 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 11:44:28,627 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 11:44:28,627 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 11:44:28,627 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 11:44:28,627 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 11:44:28,627 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 11:44:28,627 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 11:44:28,628 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 11:44:28,628 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 11:44:28,628 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 11:44:28,629 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 11:44:28,629 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 11:44:28,630 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 11:44:28,630 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 11:44:28,630 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 11:44:28,630 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 11:44:28,630 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 11:44:28,631 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 11:44:28,631 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 11:44:28,631 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 11:44:28,631 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 11:44:28,631 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 11:44:28,631 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 11:44:28,633 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 11:44:28,633 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 11:44:28,633 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 11:44:28,633 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 11:44:28,633 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 11:44:28,634 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 11:44:28,634 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 11:44:28,634 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 11:44:28,688 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 11:44:28,705 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 11:44:28,709 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 11:44:28,711 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 11:44:28,711 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 11:44:28,712 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label03_false-unreach-call.c [2018-10-27 11:44:28,780 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/f4fcd6b36/466520bc82b94cf4aced94fdaf9e6235/FLAGe78f84b5f [2018-10-27 11:44:29,444 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 11:44:29,445 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label03_false-unreach-call.c [2018-10-27 11:44:29,467 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/f4fcd6b36/466520bc82b94cf4aced94fdaf9e6235/FLAGe78f84b5f [2018-10-27 11:44:29,483 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/f4fcd6b36/466520bc82b94cf4aced94fdaf9e6235 [2018-10-27 11:44:29,494 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 11:44:29,495 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 11:44:29,496 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 11:44:29,496 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 11:44:29,502 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 11:44:29,503 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 11:44:29" (1/1) ... [2018-10-27 11:44:29,506 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59a693f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:44:29, skipping insertion in model container [2018-10-27 11:44:29,506 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 11:44:29" (1/1) ... [2018-10-27 11:44:29,519 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 11:44:29,604 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 11:44:30,335 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 11:44:30,340 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 11:44:30,555 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 11:44:30,576 INFO L193 MainTranslator]: Completed translation [2018-10-27 11:44:30,576 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:44:30 WrapperNode [2018-10-27 11:44:30,576 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 11:44:30,577 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 11:44:30,578 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 11:44:30,578 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 11:44:30,588 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:44:30" (1/1) ... [2018-10-27 11:44:30,623 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:44:30" (1/1) ... [2018-10-27 11:44:30,894 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 11:44:30,895 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 11:44:30,895 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 11:44:30,895 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 11:44:30,906 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:44:30" (1/1) ... [2018-10-27 11:44:30,907 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:44:30" (1/1) ... [2018-10-27 11:44:30,919 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:44:30" (1/1) ... [2018-10-27 11:44:30,920 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:44:30" (1/1) ... [2018-10-27 11:44:30,999 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:44:30" (1/1) ... [2018-10-27 11:44:31,035 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:44:30" (1/1) ... [2018-10-27 11:44:31,062 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:44:30" (1/1) ... [2018-10-27 11:44:31,090 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 11:44:31,091 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 11:44:31,091 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 11:44:31,091 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 11:44:31,092 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:44:30" (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 [2018-10-27 11:44:31,172 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 11:44:31,173 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 11:44:31,173 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 11:44:31,173 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 11:44:31,174 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 11:44:31,174 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 11:44:31,174 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 11:44:31,174 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 11:44:31,175 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 11:44:31,175 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 11:44:36,896 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 11:44:36,897 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 11:44:36 BoogieIcfgContainer [2018-10-27 11:44:36,898 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 11:44:36,899 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 11:44:36,900 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 11:44:36,903 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 11:44:36,904 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 11:44:29" (1/3) ... [2018-10-27 11:44:36,904 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@365a976e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 11:44:36, skipping insertion in model container [2018-10-27 11:44:36,905 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:44:30" (2/3) ... [2018-10-27 11:44:36,905 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@365a976e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 11:44:36, skipping insertion in model container [2018-10-27 11:44:36,905 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 11:44:36" (3/3) ... [2018-10-27 11:44:36,907 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label03_false-unreach-call.c [2018-10-27 11:44:36,915 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 11:44:36,925 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 11:44:36,942 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 11:44:36,983 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 11:44:36,983 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 11:44:36,983 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 11:44:36,983 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 11:44:36,983 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 11:44:36,984 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 11:44:36,984 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 11:44:36,984 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 11:44:37,017 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states. [2018-10-27 11:44:37,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-10-27 11:44:37,024 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 11:44:37,025 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 11:44:37,031 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 11:44:37,040 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 11:44:37,041 INFO L82 PathProgramCache]: Analyzing trace with hash -2114670117, now seen corresponding path program 1 times [2018-10-27 11:44:37,043 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 11:44:37,094 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:44:37,095 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 11:44:37,095 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:44:37,095 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 11:44:37,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 11:44:37,460 WARN L179 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 11:44:37,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 11:44:37,552 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 11:44:37,552 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 11:44:37,553 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 11:44:37,557 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 11:44:37,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 11:44:37,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 11:44:37,572 INFO L87 Difference]: Start difference. First operand 410 states. Second operand 3 states. [2018-10-27 11:44:42,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 11:44:42,690 INFO L93 Difference]: Finished difference Result 1156 states and 2144 transitions. [2018-10-27 11:44:42,690 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 11:44:42,692 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2018-10-27 11:44:42,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 11:44:42,718 INFO L225 Difference]: With dead ends: 1156 [2018-10-27 11:44:42,719 INFO L226 Difference]: Without dead ends: 744 [2018-10-27 11:44:42,729 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 11:44:42,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2018-10-27 11:44:42,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2018-10-27 11:44:42,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-10-27 11:44:42,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1343 transitions. [2018-10-27 11:44:42,842 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1343 transitions. Word has length 13 [2018-10-27 11:44:42,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 11:44:42,843 INFO L481 AbstractCegarLoop]: Abstraction has 744 states and 1343 transitions. [2018-10-27 11:44:42,843 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 11:44:42,843 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1343 transitions. [2018-10-27 11:44:42,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-10-27 11:44:42,850 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 11:44:42,851 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-27 11:44:42,852 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 11:44:42,852 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 11:44:42,852 INFO L82 PathProgramCache]: Analyzing trace with hash -631689799, now seen corresponding path program 1 times [2018-10-27 11:44:42,853 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 11:44:42,854 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:44:42,854 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 11:44:42,854 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:44:42,854 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 11:44:42,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 11:44:43,207 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 11:44:43,208 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 11:44:43,208 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 11:44:43,208 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 11:44:43,210 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 11:44:43,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 11:44:43,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 11:44:43,211 INFO L87 Difference]: Start difference. First operand 744 states and 1343 transitions. Second operand 6 states. [2018-10-27 11:44:51,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 11:44:51,163 INFO L93 Difference]: Finished difference Result 2846 states and 5292 transitions. [2018-10-27 11:44:51,165 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 11:44:51,165 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 86 [2018-10-27 11:44:51,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 11:44:51,188 INFO L225 Difference]: With dead ends: 2846 [2018-10-27 11:44:51,188 INFO L226 Difference]: Without dead ends: 2108 [2018-10-27 11:44:51,196 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 [2018-10-27 11:44:51,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2108 states. [2018-10-27 11:44:51,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2108 to 2090. [2018-10-27 11:44:51,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2090 states. [2018-10-27 11:44:51,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2090 states to 2090 states and 3323 transitions. [2018-10-27 11:44:51,296 INFO L78 Accepts]: Start accepts. Automaton has 2090 states and 3323 transitions. Word has length 86 [2018-10-27 11:44:51,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 11:44:51,297 INFO L481 AbstractCegarLoop]: Abstraction has 2090 states and 3323 transitions. [2018-10-27 11:44:51,297 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 11:44:51,297 INFO L276 IsEmpty]: Start isEmpty. Operand 2090 states and 3323 transitions. [2018-10-27 11:44:51,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2018-10-27 11:44:51,304 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 11:44:51,307 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-27 11:44:51,307 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 11:44:51,307 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 11:44:51,307 INFO L82 PathProgramCache]: Analyzing trace with hash 1047339596, now seen corresponding path program 1 times [2018-10-27 11:44:51,308 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 11:44:51,309 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:44:51,309 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 11:44:51,309 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:44:51,309 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 11:44:51,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 11:44:51,601 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 11:44:51,602 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 11:44:51,602 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 11:44:51,602 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 11:44:51,603 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 11:44:51,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 11:44:51,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 11:44:51,604 INFO L87 Difference]: Start difference. First operand 2090 states and 3323 transitions. Second operand 6 states. [2018-10-27 11:44:57,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 11:44:57,750 INFO L93 Difference]: Finished difference Result 5549 states and 9209 transitions. [2018-10-27 11:44:57,756 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 11:44:57,756 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 115 [2018-10-27 11:44:57,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 11:44:57,788 INFO L225 Difference]: With dead ends: 5549 [2018-10-27 11:44:57,789 INFO L226 Difference]: Without dead ends: 3465 [2018-10-27 11:44:57,802 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 [2018-10-27 11:44:57,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3465 states. [2018-10-27 11:44:57,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3465 to 3433. [2018-10-27 11:44:57,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3433 states. [2018-10-27 11:44:57,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3433 states to 3433 states and 5124 transitions. [2018-10-27 11:44:57,912 INFO L78 Accepts]: Start accepts. Automaton has 3433 states and 5124 transitions. Word has length 115 [2018-10-27 11:44:57,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 11:44:57,913 INFO L481 AbstractCegarLoop]: Abstraction has 3433 states and 5124 transitions. [2018-10-27 11:44:57,913 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 11:44:57,913 INFO L276 IsEmpty]: Start isEmpty. Operand 3433 states and 5124 transitions. [2018-10-27 11:44:57,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-10-27 11:44:57,920 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 11:44:57,925 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 11:44:57,925 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 11:44:57,926 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 11:44:57,926 INFO L82 PathProgramCache]: Analyzing trace with hash -306297911, now seen corresponding path program 1 times [2018-10-27 11:44:57,926 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 11:44:57,927 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:44:57,927 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 11:44:57,927 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:44:57,927 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 11:44:57,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 11:44:58,216 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 11:44:58,216 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 11:44:58,217 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 11:44:58,217 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 11:44:58,217 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 11:44:58,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 11:44:58,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 11:44:58,218 INFO L87 Difference]: Start difference. First operand 3433 states and 5124 transitions. Second operand 6 states. [2018-10-27 11:45:05,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 11:45:05,711 INFO L93 Difference]: Finished difference Result 8911 states and 13439 transitions. [2018-10-27 11:45:05,712 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 11:45:05,712 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 158 [2018-10-27 11:45:05,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 11:45:05,736 INFO L225 Difference]: With dead ends: 8911 [2018-10-27 11:45:05,736 INFO L226 Difference]: Without dead ends: 5484 [2018-10-27 11:45:05,751 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 [2018-10-27 11:45:05,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5484 states. [2018-10-27 11:45:05,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5484 to 5455. [2018-10-27 11:45:05,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5455 states. [2018-10-27 11:45:05,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5455 states to 5455 states and 7720 transitions. [2018-10-27 11:45:05,876 INFO L78 Accepts]: Start accepts. Automaton has 5455 states and 7720 transitions. Word has length 158 [2018-10-27 11:45:05,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 11:45:05,877 INFO L481 AbstractCegarLoop]: Abstraction has 5455 states and 7720 transitions. [2018-10-27 11:45:05,877 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 11:45:05,877 INFO L276 IsEmpty]: Start isEmpty. Operand 5455 states and 7720 transitions. [2018-10-27 11:45:05,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2018-10-27 11:45:05,882 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 11:45:05,883 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 11:45:05,883 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 11:45:05,883 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 11:45:05,883 INFO L82 PathProgramCache]: Analyzing trace with hash -1241846344, now seen corresponding path program 1 times [2018-10-27 11:45:05,884 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 11:45:05,884 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:45:05,885 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 11:45:05,885 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:45:05,885 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 11:45:05,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 11:45:06,127 WARN L179 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 11:45:06,283 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 12 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-27 11:45:06,284 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 11:45:06,284 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 11:45:06,285 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 229 with the following transitions: [2018-10-27 11:45:06,289 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [183], [185], [188], [196], [204], [212], [220], [228], [236], [244], [252], [260], [268], [276], [284], [292], [300], [308], [316], [324], [332], [340], [348], [356], [364], [372], [380], [388], [396], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [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], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [972], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-10-27 11:45:06,376 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 11:45:06,377 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 11:45:07,034 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 11:45:07,036 INFO L272 AbstractInterpreter]: Visited 150 different actions 150 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-27 11:45:07,073 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 11:45:07,073 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 11:45:07,597 INFO L227 lantSequenceWeakener]: Weakened 219 states. On average, predicates are now at 77.16% of their original sizes. [2018-10-27 11:45:07,598 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 11:45:08,026 INFO L415 sIntCurrentIteration]: We unified 227 AI predicates to 227 [2018-10-27 11:45:08,027 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 11:45:08,028 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 11:45:08,028 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [5] total 11 [2018-10-27 11:45:08,028 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 11:45:08,029 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-27 11:45:08,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-27 11:45:08,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-27 11:45:08,030 INFO L87 Difference]: Start difference. First operand 5455 states and 7720 transitions. Second operand 8 states. [2018-10-27 11:45:10,866 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