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.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label23_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 02:45:21,923 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 02:45:21,925 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 02:45:21,940 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 02:45:21,941 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 02:45:21,942 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 02:45:21,945 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 02:45:21,951 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 02:45:21,958 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 02:45:21,959 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 02:45:21,960 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 02:45:21,960 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 02:45:21,961 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 02:45:21,962 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 02:45:21,963 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 02:45:21,964 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 02:45:21,965 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 02:45:21,968 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 02:45:21,970 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 02:45:21,971 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 02:45:21,973 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 02:45:21,974 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 02:45:21,979 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-11-07 02:45:21,994 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 02:45:21,994 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 02:45:21,998 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 02:45:21,999 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 02:45:21,999 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-11-07 02:45:22,030 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 02:45:22,030 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 02:45:22,031 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 02:45:22,031 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 02:45:22,031 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 02:45:22,031 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 02:45:22,035 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 02:45:22,035 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 02:45:22,035 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 02:45:22,035 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 02:45:22,035 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 02:45:22,036 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 02:45:22,036 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 02:45:22,037 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 02:45:22,038 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 02:45:22,038 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 02:45:22,038 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 02:45:22,038 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 02:45:22,038 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 02:45:22,038 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 02:45:22,039 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 02:45:22,039 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 02:45:22,039 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 02:45:22,039 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 02:45:22,039 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 02:45:22,041 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 02:45:22,041 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 02:45:22,041 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 02:45:22,041 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 02:45:22,042 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 02:45:22,042 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 02:45:22,042 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 02:45:22,042 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 02:45:22,042 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 02:45:22,091 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 02:45:22,108 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 02:45:22,112 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 02:45:22,113 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 02:45:22,114 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 02:45:22,115 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label23_true-unreach-call.c [2018-11-07 02:45:22,180 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4af9d8a24/5b46bd38d5f04c3f876e8a9fd905a811/FLAGf70447b45 [2018-11-07 02:45:22,745 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 02:45:22,746 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label23_true-unreach-call.c [2018-11-07 02:45:22,759 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4af9d8a24/5b46bd38d5f04c3f876e8a9fd905a811/FLAGf70447b45 [2018-11-07 02:45:22,781 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4af9d8a24/5b46bd38d5f04c3f876e8a9fd905a811 [2018-11-07 02:45:22,793 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 02:45:22,794 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 02:45:22,795 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 02:45:22,796 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 02:45:22,799 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 02:45:22,800 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:45:22" (1/1) ... [2018-11-07 02:45:22,804 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49b7df7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:45:22, skipping insertion in model container [2018-11-07 02:45:22,804 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:45:22" (1/1) ... [2018-11-07 02:45:22,815 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 02:45:22,890 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 02:45:23,366 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 02:45:23,371 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 02:45:23,470 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 02:45:23,487 INFO L193 MainTranslator]: Completed translation [2018-11-07 02:45:23,487 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:45:23 WrapperNode [2018-11-07 02:45:23,488 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 02:45:23,489 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 02:45:23,489 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 02:45:23,489 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 02:45:23,499 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:45:23" (1/1) ... [2018-11-07 02:45:23,517 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:45:23" (1/1) ... [2018-11-07 02:45:23,623 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 02:45:23,623 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 02:45:23,623 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 02:45:23,623 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 02:45:23,636 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:45:23" (1/1) ... [2018-11-07 02:45:23,636 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:45:23" (1/1) ... [2018-11-07 02:45:23,649 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:45:23" (1/1) ... [2018-11-07 02:45:23,649 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:45:23" (1/1) ... [2018-11-07 02:45:23,702 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:45:23" (1/1) ... [2018-11-07 02:45:23,719 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:45:23" (1/1) ... [2018-11-07 02:45:23,724 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:45:23" (1/1) ... [2018-11-07 02:45:23,731 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 02:45:23,731 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 02:45:23,731 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 02:45:23,732 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 02:45:23,733 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:45:23" (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 02:45:23,826 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 02:45:23,826 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 02:45:23,826 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 02:45:23,826 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 02:45:23,826 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 02:45:23,827 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 02:45:23,827 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 02:45:23,827 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 02:45:23,827 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 02:45:27,115 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 02:45:27,116 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:45:27 BoogieIcfgContainer [2018-11-07 02:45:27,117 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 02:45:27,118 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 02:45:27,118 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 02:45:27,121 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 02:45:27,122 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:45:22" (1/3) ... [2018-11-07 02:45:27,123 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d14110f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:45:27, skipping insertion in model container [2018-11-07 02:45:27,123 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:45:23" (2/3) ... [2018-11-07 02:45:27,123 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d14110f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:45:27, skipping insertion in model container [2018-11-07 02:45:27,124 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:45:27" (3/3) ... [2018-11-07 02:45:27,126 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem10_label23_true-unreach-call.c [2018-11-07 02:45:27,136 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 02:45:27,145 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 02:45:27,163 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 02:45:27,203 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 02:45:27,203 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 02:45:27,204 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 02:45:27,204 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 02:45:27,204 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 02:45:27,205 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 02:45:27,205 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 02:45:27,205 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 02:45:27,235 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states. [2018-11-07 02:45:27,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-11-07 02:45:27,244 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 02:45:27,245 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 02:45:27,248 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 02:45:27,253 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 02:45:27,253 INFO L82 PathProgramCache]: Analyzing trace with hash 508483465, now seen corresponding path program 1 times [2018-11-07 02:45:27,256 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 02:45:27,301 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:45:27,302 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 02:45:27,302 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:45:27,302 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 02:45:27,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 02:45:27,707 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 02:45:27,769 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 02:45:27,772 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 02:45:27,772 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 02:45:27,774 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 02:45:27,780 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 02:45:27,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 02:45:27,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 02:45:27,804 INFO L87 Difference]: Start difference. First operand 216 states. Second operand 3 states. [2018-11-07 02:45:29,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 02:45:29,590 INFO L93 Difference]: Finished difference Result 574 states and 992 transitions. [2018-11-07 02:45:29,593 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 02:45:29,594 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 53 [2018-11-07 02:45:29,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 02:45:29,614 INFO L225 Difference]: With dead ends: 574 [2018-11-07 02:45:29,614 INFO L226 Difference]: Without dead ends: 356 [2018-11-07 02:45:29,626 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 02:45:29,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2018-11-07 02:45:29,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 356. [2018-11-07 02:45:29,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 356 states. [2018-11-07 02:45:29,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 609 transitions. [2018-11-07 02:45:29,705 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 609 transitions. Word has length 53 [2018-11-07 02:45:29,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 02:45:29,706 INFO L480 AbstractCegarLoop]: Abstraction has 356 states and 609 transitions. [2018-11-07 02:45:29,706 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 02:45:29,706 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 609 transitions. [2018-11-07 02:45:29,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-11-07 02:45:29,723 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 02:45:29,723 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:45:29,723 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 02:45:29,724 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 02:45:29,724 INFO L82 PathProgramCache]: Analyzing trace with hash -1327667053, now seen corresponding path program 1 times [2018-11-07 02:45:29,724 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 02:45:29,727 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:45:29,727 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 02:45:29,727 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:45:29,727 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 02:45:29,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 02:45:30,205 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 02:45:30,205 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 02:45:30,206 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 02:45:30,206 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 02:45:30,209 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 02:45:30,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 02:45:30,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 02:45:30,210 INFO L87 Difference]: Start difference. First operand 356 states and 609 transitions. Second operand 5 states. [2018-11-07 02:45:33,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 02:45:33,167 INFO L93 Difference]: Finished difference Result 1289 states and 2315 transitions. [2018-11-07 02:45:33,168 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 02:45:33,168 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 136 [2018-11-07 02:45:33,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 02:45:33,178 INFO L225 Difference]: With dead ends: 1289 [2018-11-07 02:45:33,178 INFO L226 Difference]: Without dead ends: 939 [2018-11-07 02:45:33,184 INFO L604 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 [2018-11-07 02:45:33,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 939 states. [2018-11-07 02:45:33,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 939 to 926. [2018-11-07 02:45:33,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 926 states. [2018-11-07 02:45:33,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 1444 transitions. [2018-11-07 02:45:33,253 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 1444 transitions. Word has length 136 [2018-11-07 02:45:33,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 02:45:33,254 INFO L480 AbstractCegarLoop]: Abstraction has 926 states and 1444 transitions. [2018-11-07 02:45:33,254 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 02:45:33,254 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 1444 transitions. [2018-11-07 02:45:33,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2018-11-07 02:45:33,260 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 02:45:33,261 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:45:33,261 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 02:45:33,261 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 02:45:33,262 INFO L82 PathProgramCache]: Analyzing trace with hash -734844493, now seen corresponding path program 1 times [2018-11-07 02:45:33,262 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 02:45:33,263 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:45:33,263 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 02:45:33,263 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:45:33,264 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 02:45:33,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 02:45:33,624 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 02:45:33,625 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 02:45:33,625 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 02:45:33,625 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 02:45:33,626 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 02:45:33,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 02:45:33,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 02:45:33,627 INFO L87 Difference]: Start difference. First operand 926 states and 1444 transitions. Second operand 6 states. [2018-11-07 02:45:38,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 02:45:38,186 INFO L93 Difference]: Finished difference Result 2537 states and 4091 transitions. [2018-11-07 02:45:38,189 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 02:45:38,189 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 152 [2018-11-07 02:45:38,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 02:45:38,205 INFO L225 Difference]: With dead ends: 2537 [2018-11-07 02:45:38,205 INFO L226 Difference]: Without dead ends: 1617 [2018-11-07 02:45:38,216 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 02:45:38,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1617 states. [2018-11-07 02:45:38,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1617 to 1586. [2018-11-07 02:45:38,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1586 states. [2018-11-07 02:45:38,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1586 states to 1586 states and 2321 transitions. [2018-11-07 02:45:38,292 INFO L78 Accepts]: Start accepts. Automaton has 1586 states and 2321 transitions. Word has length 152 [2018-11-07 02:45:38,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 02:45:38,293 INFO L480 AbstractCegarLoop]: Abstraction has 1586 states and 2321 transitions. [2018-11-07 02:45:38,293 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 02:45:38,294 INFO L276 IsEmpty]: Start isEmpty. Operand 1586 states and 2321 transitions. [2018-11-07 02:45:38,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-11-07 02:45:38,300 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 02:45:38,302 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:45:38,302 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 02:45:38,302 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 02:45:38,303 INFO L82 PathProgramCache]: Analyzing trace with hash -829584541, now seen corresponding path program 1 times [2018-11-07 02:45:38,303 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 02:45:38,305 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:45:38,305 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 02:45:38,305 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:45:38,305 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 02:45:38,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 02:45:38,631 WARN L179 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 02:45:39,038 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 02:45:39,038 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 02:45:39,038 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 02:45:39,039 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 02:45:39,039 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 02:45:39,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 02:45:39,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 02:45:39,040 INFO L87 Difference]: Start difference. First operand 1586 states and 2321 transitions. Second operand 6 states. [2018-11-07 02:45:40,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 02:45:40,351 INFO L93 Difference]: Finished difference Result 3508 states and 5326 transitions. [2018-11-07 02:45:40,362 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 02:45:40,362 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 176 [2018-11-07 02:45:40,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 02:45:40,381 INFO L225 Difference]: With dead ends: 3508 [2018-11-07 02:45:40,381 INFO L226 Difference]: Without dead ends: 1928 [2018-11-07 02:45:40,388 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 02:45:40,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1928 states. [2018-11-07 02:45:40,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1928 to 1887. [2018-11-07 02:45:40,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1887 states. [2018-11-07 02:45:40,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1887 states to 1887 states and 2679 transitions. [2018-11-07 02:45:40,457 INFO L78 Accepts]: Start accepts. Automaton has 1887 states and 2679 transitions. Word has length 176 [2018-11-07 02:45:40,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 02:45:40,458 INFO L480 AbstractCegarLoop]: Abstraction has 1887 states and 2679 transitions. [2018-11-07 02:45:40,458 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 02:45:40,458 INFO L276 IsEmpty]: Start isEmpty. Operand 1887 states and 2679 transitions. [2018-11-07 02:45:40,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2018-11-07 02:45:40,466 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 02:45:40,467 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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 02:45:40,467 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 02:45:40,467 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 02:45:40,468 INFO L82 PathProgramCache]: Analyzing trace with hash -642267359, now seen corresponding path program 1 times [2018-11-07 02:45:40,468 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 02:45:40,469 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:45:40,469 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 02:45:40,469 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:45:40,469 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 02:45:40,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 02:45:40,965 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 161 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 02:45:40,966 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 02:45:40,966 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 02:45:40,967 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 208 with the following transitions: [2018-11-07 02:45:40,969 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [325], [327], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [498], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [546], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-11-07 02:45:41,047 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 02:45:41,047 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 02:45:43,453 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 02:45:53,441 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 02:45:53,443 INFO L272 AbstractInterpreter]: Visited 91 different actions 431 times. Merged at 5 different actions 20 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 02:45:53,455 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 02:45:53,455 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 02:45:55,979 INFO L227 lantSequenceWeakener]: Weakened 55 states. On average, predicates are now at 76.78% of their original sizes. [2018-11-07 02:45:55,979 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 02:46:06,543 INFO L415 sIntCurrentIteration]: We unified 206 AI predicates to 206 [2018-11-07 02:46:06,543 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 02:46:06,544 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 02:46:06,545 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [20] imperfect sequences [6] total 24 [2018-11-07 02:46:06,545 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 02:46:06,546 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-11-07 02:46:06,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-11-07 02:46:06,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2018-11-07 02:46:06,546 INFO L87 Difference]: Start difference. First operand 1887 states and 2679 transitions. Second operand 20 states. [2018-11-07 02:48:24,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 02:48:24,548 INFO L93 Difference]: Finished difference Result 4523 states and 6504 transitions. [2018-11-07 02:48:24,548 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-11-07 02:48:24,548 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 207 [2018-11-07 02:48:24,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 02:48:24,563 INFO L225 Difference]: With dead ends: 4523 [2018-11-07 02:48:24,563 INFO L226 Difference]: Without dead ends: 2642 [2018-11-07 02:48:24,572 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 217 GetRequests, 181 SyntacticMatches, 7 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 13.0s TimeCoverageRelationStatistics Valid=178, Invalid=752, Unknown=0, NotChecked=0, Total=930 [2018-11-07 02:48:24,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2642 states. [2018-11-07 02:48:24,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2642 to 2333. [2018-11-07 02:48:24,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2333 states. [2018-11-07 02:48:24,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2333 states to 2333 states and 3170 transitions. [2018-11-07 02:48:24,705 INFO L78 Accepts]: Start accepts. Automaton has 2333 states and 3170 transitions. Word has length 207 [2018-11-07 02:48:24,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 02:48:24,705 INFO L480 AbstractCegarLoop]: Abstraction has 2333 states and 3170 transitions. [2018-11-07 02:48:24,705 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-11-07 02:48:24,706 INFO L276 IsEmpty]: Start isEmpty. Operand 2333 states and 3170 transitions. [2018-11-07 02:48:24,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2018-11-07 02:48:24,712 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 02:48:24,713 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 02:48:24,713 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 02:48:24,713 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 02:48:24,714 INFO L82 PathProgramCache]: Analyzing trace with hash 1805277256, now seen corresponding path program 1 times [2018-11-07 02:48:24,714 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 02:48:24,715 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:48:24,715 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 02:48:24,715 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:48:24,715 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 02:48:24,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 02:48:25,268 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 170 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 02:48:25,269 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 02:48:25,269 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 02:48:25,269 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 217 with the following transitions: [2018-11-07 02:48:25,269 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [325], [327], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [534], [535], [539], [543], [546], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-11-07 02:48:25,275 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 02:48:25,276 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 02:48:26,785 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 02:48:35,931 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 02:48:35,932 INFO L272 AbstractInterpreter]: Visited 91 different actions 516 times. Merged at 5 different actions 25 times. Widened at 1 different actions 1 times. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 02:48:35,942 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 02:48:35,942 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 02:48:38,069 INFO L227 lantSequenceWeakener]: Weakened 29 states. On average, predicates are now at 77.59% of their original sizes. [2018-11-07 02:48:38,069 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 02:49:01,327 INFO L415 sIntCurrentIteration]: We unified 215 AI predicates to 215 [2018-11-07 02:49:01,327 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 02:49:01,328 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 02:49:01,328 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [12] total 28 [2018-11-07 02:49:01,328 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 02:49:01,331 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-07 02:49:01,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-07 02:49:01,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2018-11-07 02:49:01,332 INFO L87 Difference]: Start difference. First operand 2333 states and 3170 transitions. Second operand 18 states. Received shutdown request... [2018-11-07 02:49:07,275 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-07 02:49:07,275 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 02:49:07,281 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 02:49:07,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 02:49:07 BoogieIcfgContainer [2018-11-07 02:49:07,281 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 02:49:07,282 INFO L168 Benchmark]: Toolchain (without parser) took 224488.71 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 1.6 GB in the end (delta: -148.2 MB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. [2018-11-07 02:49:07,283 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 02:49:07,284 INFO L168 Benchmark]: CACSL2BoogieTranslator took 692.63 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 34.4 MB). Peak memory consumption was 34.4 MB. Max. memory is 7.1 GB. [2018-11-07 02:49:07,284 INFO L168 Benchmark]: Boogie Procedure Inliner took 134.30 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 715.7 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -793.3 MB). Peak memory consumption was 18.8 MB. Max. memory is 7.1 GB. [2018-11-07 02:49:07,285 INFO L168 Benchmark]: Boogie Preprocessor took 107.86 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. [2018-11-07 02:49:07,286 INFO L168 Benchmark]: RCFGBuilder took 3385.39 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 107.0 MB). Peak memory consumption was 107.0 MB. Max. memory is 7.1 GB. [2018-11-07 02:49:07,287 INFO L168 Benchmark]: TraceAbstraction took 220163.43 ms. Allocated memory was 2.2 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 1.6 GB in the end (delta: 489.8 MB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. [2018-11-07 02:49:07,292 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 692.63 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 34.4 MB). Peak memory consumption was 34.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 134.30 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 715.7 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -793.3 MB). Peak memory consumption was 18.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 107.86 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3385.39 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 107.0 MB). Peak memory consumption was 107.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 220163.43 ms. Allocated memory was 2.2 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 1.6 GB in the end (delta: 489.8 MB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 142]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 142). Cancelled while BasicCegarLoop was constructing difference of abstraction (2333states) and FLOYD_HOARE automaton (currently 9 states, 18 states before enhancement),while ReachableStatesComputation was computing reachable states (27 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 216 locations, 1 error locations. TIMEOUT Result, 220.0s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 154.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 552 SDtfs, 4107 SDslu, 745 SDs, 0 SdLazy, 5499 SolverSat, 1137 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 86.4s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 471 GetRequests, 361 SyntacticMatches, 39 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 473 ImplicationChecksByTransitivity, 37.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2333occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 23.1s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9943973975007745 AbsIntWeakeningRatio, 0.12351543942992874 AbsIntAvgWeakeningVarsNumRemoved, 509.4631828978622 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 5 MinimizatonAttempts, 394 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 940 NumberOfCodeBlocks, 940 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 934 ConstructedInterpolants, 0 QuantifiedInterpolants, 1030913 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 469/473 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown