java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem16_label26_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 15:20:08,882 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 15:20:08,884 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 15:20:08,897 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 15:20:08,897 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 15:20:08,899 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 15:20:08,900 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 15:20:08,902 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 15:20:08,904 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 15:20:08,905 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 15:20:08,906 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 15:20:08,906 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 15:20:08,907 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 15:20:08,908 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 15:20:08,909 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 15:20:08,910 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 15:20:08,911 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 15:20:08,913 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 15:20:08,915 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 15:20:08,917 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 15:20:08,918 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 15:20:08,920 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 15:20:08,922 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-11-07 15:20:08,932 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 15:20:08,934 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 15:20:08,936 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 15:20:08,937 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 15:20:08,937 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf [2018-11-07 15:20:08,971 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 15:20:08,971 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 15:20:08,972 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 15:20:08,972 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 15:20:08,973 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 15:20:08,973 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 15:20:08,973 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 15:20:08,973 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 15:20:08,973 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 15:20:08,974 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 15:20:08,974 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 15:20:08,975 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 15:20:08,976 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 15:20:08,977 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 15:20:08,977 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 15:20:08,977 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 15:20:08,977 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 15:20:08,977 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 15:20:08,978 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 15:20:08,978 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 15:20:08,978 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 15:20:08,978 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 15:20:08,978 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 15:20:08,979 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 15:20:08,980 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 15:20:08,980 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 15:20:08,981 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 15:20:08,981 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 15:20:08,981 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 15:20:08,981 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 15:20:08,981 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 15:20:08,981 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 15:20:08,982 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 15:20:08,982 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 15:20:09,038 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 15:20:09,058 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 15:20:09,063 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 15:20:09,065 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 15:20:09,065 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 15:20:09,067 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label26_true-unreach-call.c [2018-11-07 15:20:09,133 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68b4f91e3/ff507a3642a84b9e9a281a9d1c9a2cb4/FLAG5a6584769 [2018-11-07 15:20:09,760 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 15:20:09,761 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label26_true-unreach-call.c [2018-11-07 15:20:09,778 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68b4f91e3/ff507a3642a84b9e9a281a9d1c9a2cb4/FLAG5a6584769 [2018-11-07 15:20:09,793 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68b4f91e3/ff507a3642a84b9e9a281a9d1c9a2cb4 [2018-11-07 15:20:09,805 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 15:20:09,807 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 15:20:09,808 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 15:20:09,808 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 15:20:09,812 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 15:20:09,813 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:20:09" (1/1) ... [2018-11-07 15:20:09,816 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25ab8b3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:20:09, skipping insertion in model container [2018-11-07 15:20:09,817 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:20:09" (1/1) ... [2018-11-07 15:20:09,827 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 15:20:09,916 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 15:20:10,757 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 15:20:10,762 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 15:20:11,057 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 15:20:11,077 INFO L193 MainTranslator]: Completed translation [2018-11-07 15:20:11,078 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:20:11 WrapperNode [2018-11-07 15:20:11,078 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 15:20:11,079 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 15:20:11,079 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 15:20:11,079 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 15:20:11,089 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:20:11" (1/1) ... [2018-11-07 15:20:11,266 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:20:11" (1/1) ... [2018-11-07 15:20:11,282 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 15:20:11,283 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 15:20:11,283 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 15:20:11,283 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 15:20:11,299 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:20:11" (1/1) ... [2018-11-07 15:20:11,299 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:20:11" (1/1) ... [2018-11-07 15:20:11,308 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:20:11" (1/1) ... [2018-11-07 15:20:11,308 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:20:11" (1/1) ... [2018-11-07 15:20:11,378 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:20:11" (1/1) ... [2018-11-07 15:20:11,408 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:20:11" (1/1) ... [2018-11-07 15:20:11,424 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:20:11" (1/1) ... [2018-11-07 15:20:11,440 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 15:20:11,441 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 15:20:11,441 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 15:20:11,441 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 15:20:11,443 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:20:11" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 15:20:11,505 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 15:20:11,505 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 15:20:11,505 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 15:20:11,506 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 15:20:11,506 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 15:20:11,506 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 15:20:11,506 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 15:20:11,506 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 15:20:11,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 15:20:11,507 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 15:20:11,507 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 15:20:17,470 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 15:20:17,471 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:20:17 BoogieIcfgContainer [2018-11-07 15:20:17,471 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 15:20:17,473 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 15:20:17,475 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 15:20:17,479 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 15:20:17,479 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 03:20:09" (1/3) ... [2018-11-07 15:20:17,480 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ae37410 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:20:17, skipping insertion in model container [2018-11-07 15:20:17,480 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:20:11" (2/3) ... [2018-11-07 15:20:17,482 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ae37410 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:20:17, skipping insertion in model container [2018-11-07 15:20:17,482 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:20:17" (3/3) ... [2018-11-07 15:20:17,484 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label26_true-unreach-call.c [2018-11-07 15:20:17,495 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 15:20:17,509 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 15:20:17,526 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 15:20:17,569 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 15:20:17,569 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 15:20:17,569 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 15:20:17,570 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 15:20:17,570 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 15:20:17,570 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 15:20:17,570 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 15:20:17,570 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 15:20:17,604 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states. [2018-11-07 15:20:17,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-11-07 15:20:17,618 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:20:17,619 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 15:20:17,621 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:20:17,626 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:20:17,627 INFO L82 PathProgramCache]: Analyzing trace with hash 1191514292, now seen corresponding path program 1 times [2018-11-07 15:20:17,629 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:20:17,682 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:20:17,682 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:20:17,682 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:20:17,682 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:20:17,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:20:18,136 WARN L179 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 15:20:18,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:20:18,289 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:20:18,294 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 15:20:18,294 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:20:18,304 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 15:20:18,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 15:20:18,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 15:20:18,333 INFO L87 Difference]: Start difference. First operand 410 states. Second operand 3 states. [2018-11-07 15:20:22,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:20:22,115 INFO L93 Difference]: Finished difference Result 1156 states and 2144 transitions. [2018-11-07 15:20:22,119 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 15:20:22,120 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 42 [2018-11-07 15:20:22,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:20:22,153 INFO L225 Difference]: With dead ends: 1156 [2018-11-07 15:20:22,154 INFO L226 Difference]: Without dead ends: 744 [2018-11-07 15:20:22,162 INFO L604 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 [2018-11-07 15:20:22,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2018-11-07 15:20:22,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2018-11-07 15:20:22,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-11-07 15:20:22,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1343 transitions. [2018-11-07 15:20:22,271 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1343 transitions. Word has length 42 [2018-11-07 15:20:22,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:20:22,272 INFO L480 AbstractCegarLoop]: Abstraction has 744 states and 1343 transitions. [2018-11-07 15:20:22,272 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 15:20:22,272 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1343 transitions. [2018-11-07 15:20:22,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2018-11-07 15:20:22,279 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:20:22,280 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 15:20:22,280 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:20:22,280 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:20:22,281 INFO L82 PathProgramCache]: Analyzing trace with hash 1985483383, now seen corresponding path program 1 times [2018-11-07 15:20:22,281 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:20:22,282 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:20:22,282 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:20:22,282 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:20:22,283 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:20:22,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:20:22,623 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:20:22,624 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:20:22,624 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 15:20:22,624 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:20:22,626 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 15:20:22,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 15:20:22,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 15:20:22,627 INFO L87 Difference]: Start difference. First operand 744 states and 1343 transitions. Second operand 6 states. [2018-11-07 15:20:30,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:20:30,054 INFO L93 Difference]: Finished difference Result 2846 states and 5292 transitions. [2018-11-07 15:20:30,064 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 15:20:30,064 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 115 [2018-11-07 15:20:30,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:20:30,087 INFO L225 Difference]: With dead ends: 2846 [2018-11-07 15:20:30,087 INFO L226 Difference]: Without dead ends: 2108 [2018-11-07 15:20:30,095 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 15:20:30,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2108 states. [2018-11-07 15:20:30,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2108 to 2090. [2018-11-07 15:20:30,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2090 states. [2018-11-07 15:20:30,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2090 states to 2090 states and 3323 transitions. [2018-11-07 15:20:30,196 INFO L78 Accepts]: Start accepts. Automaton has 2090 states and 3323 transitions. Word has length 115 [2018-11-07 15:20:30,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:20:30,196 INFO L480 AbstractCegarLoop]: Abstraction has 2090 states and 3323 transitions. [2018-11-07 15:20:30,196 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 15:20:30,196 INFO L276 IsEmpty]: Start isEmpty. Operand 2090 states and 3323 transitions. [2018-11-07 15:20:30,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-11-07 15:20:30,207 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:20:30,209 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 15:20:30,209 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:20:30,210 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:20:30,210 INFO L82 PathProgramCache]: Analyzing trace with hash 808284322, now seen corresponding path program 1 times [2018-11-07 15:20:30,210 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:20:30,212 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:20:30,212 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:20:30,213 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:20:30,214 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:20:30,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:20:30,551 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:20:30,551 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:20:30,551 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 15:20:30,552 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:20:30,553 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 15:20:30,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 15:20:30,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 15:20:30,554 INFO L87 Difference]: Start difference. First operand 2090 states and 3323 transitions. Second operand 6 states. [2018-11-07 15:20:35,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:20:35,768 INFO L93 Difference]: Finished difference Result 5549 states and 9209 transitions. [2018-11-07 15:20:35,768 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 15:20:35,769 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 144 [2018-11-07 15:20:35,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:20:35,792 INFO L225 Difference]: With dead ends: 5549 [2018-11-07 15:20:35,792 INFO L226 Difference]: Without dead ends: 3465 [2018-11-07 15:20:35,806 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 15:20:35,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3465 states. [2018-11-07 15:20:35,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3465 to 3433. [2018-11-07 15:20:35,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3433 states. [2018-11-07 15:20:35,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3433 states to 3433 states and 5124 transitions. [2018-11-07 15:20:35,900 INFO L78 Accepts]: Start accepts. Automaton has 3433 states and 5124 transitions. Word has length 144 [2018-11-07 15:20:35,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:20:35,901 INFO L480 AbstractCegarLoop]: Abstraction has 3433 states and 5124 transitions. [2018-11-07 15:20:35,901 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 15:20:35,901 INFO L276 IsEmpty]: Start isEmpty. Operand 3433 states and 5124 transitions. [2018-11-07 15:20:35,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2018-11-07 15:20:35,910 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:20:35,911 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 15:20:35,911 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:20:35,911 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:20:35,911 INFO L82 PathProgramCache]: Analyzing trace with hash -1228883702, now seen corresponding path program 1 times [2018-11-07 15:20:35,912 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:20:35,913 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:20:35,913 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:20:35,913 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:20:35,913 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:20:35,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:20:36,346 WARN L179 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 15:20:36,785 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:20:36,785 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:20:36,785 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 15:20:36,785 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:20:36,786 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 15:20:36,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 15:20:36,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 15:20:36,787 INFO L87 Difference]: Start difference. First operand 3433 states and 5124 transitions. Second operand 6 states. [2018-11-07 15:20:39,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:20:39,751 INFO L93 Difference]: Finished difference Result 8945 states and 13969 transitions. [2018-11-07 15:20:39,758 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 15:20:39,758 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 316 [2018-11-07 15:20:39,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:20:39,785 INFO L225 Difference]: With dead ends: 8945 [2018-11-07 15:20:39,785 INFO L226 Difference]: Without dead ends: 5518 [2018-11-07 15:20:39,797 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 15:20:39,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5518 states. [2018-11-07 15:20:39,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5518 to 5504. [2018-11-07 15:20:39,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5504 states. [2018-11-07 15:20:39,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5504 states to 5504 states and 7967 transitions. [2018-11-07 15:20:39,921 INFO L78 Accepts]: Start accepts. Automaton has 5504 states and 7967 transitions. Word has length 316 [2018-11-07 15:20:39,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:20:39,923 INFO L480 AbstractCegarLoop]: Abstraction has 5504 states and 7967 transitions. [2018-11-07 15:20:39,923 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 15:20:39,923 INFO L276 IsEmpty]: Start isEmpty. Operand 5504 states and 7967 transitions. [2018-11-07 15:20:39,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2018-11-07 15:20:39,941 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:20:39,941 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 15:20:39,941 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:20:39,942 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:20:39,942 INFO L82 PathProgramCache]: Analyzing trace with hash -1236053316, now seen corresponding path program 1 times [2018-11-07 15:20:39,942 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:20:39,943 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:20:39,943 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:20:39,943 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:20:39,943 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:20:39,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:20:40,293 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 15:20:40,788 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 70 proven. 111 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 15:20:40,788 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 15:20:40,788 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 15:20:40,790 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 433 with the following transitions: [2018-11-07 15:20:40,800 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [415], [417], [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], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [837], [841], [845], [849], [853], [856], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [973], [977], [981], [985], [989], [993], [997], [1001], [1005], [1009], [1013], [1017], [1021], [1025], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1065], [1069], [1073], [1077], [1081], [1085], [1089], [1093], [1097], [1101], [1105], [1109], [1113], [1117], [1121], [1125], [1129], [1133], [1137], [1141], [1145], [1149], [1153], [1157], [1161], [1165], [1169], [1173], [1177], [1181], [1185], [1189], [1193], [1197], [1201], [1205], [1209], [1213], [1217], [1221], [1225], [1229], [1233], [1237], [1241], [1245], [1249], [1253], [1257], [1261], [1265], [1269], [1273], [1277], [1281], [1285], [1289], [1293], [1297], [1301], [1305], [1309], [1313], [1317], [1321], [1325], [1329], [1333], [1337], [1341], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1445], [1449], [1453], [1457], [1461], [1465], [1469], [1473], [1477], [1481], [1485], [1488], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 15:20:40,861 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 15:20:40,861 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 15:20:42,279 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 15:20:42,280 INFO L272 AbstractInterpreter]: Visited 279 different actions 279 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 15:20:42,327 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:20:42,328 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 15:20:43,946 INFO L227 lantSequenceWeakener]: Weakened 410 states. On average, predicates are now at 77.6% of their original sizes. [2018-11-07 15:20:43,946 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 15:20:47,182 INFO L415 sIntCurrentIteration]: We unified 431 AI predicates to 431 [2018-11-07 15:20:47,183 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 15:20:47,184 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 15:20:47,184 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [6] total 17 [2018-11-07 15:20:47,184 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:20:47,185 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-07 15:20:47,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-07 15:20:47,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2018-11-07 15:20:47,187 INFO L87 Difference]: Start difference. First operand 5504 states and 7967 transitions. Second operand 13 states. [2018-11-07 15:20:52,690 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