java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem14_label24_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 03:03:08,021 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 03:03:08,023 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 03:03:08,035 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 03:03:08,035 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 03:03:08,036 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 03:03:08,038 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 03:03:08,040 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 03:03:08,043 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 03:03:08,044 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 03:03:08,044 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 03:03:08,046 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 03:03:08,047 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 03:03:08,055 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 03:03:08,056 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 03:03:08,057 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 03:03:08,060 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 03:03:08,061 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 03:03:08,064 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 03:03:08,066 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 03:03:08,068 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 03:03:08,070 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 03:03:08,072 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-27 03:03:08,082 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 03:03:08,082 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 03:03:08,084 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 03:03:08,085 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 03:03:08,085 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-27 03:03:08,113 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 03:03:08,113 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 03:03:08,114 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 03:03:08,114 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 03:03:08,114 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 03:03:08,117 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 03:03:08,117 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 03:03:08,117 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 03:03:08,117 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 03:03:08,117 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 03:03:08,118 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 03:03:08,118 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 03:03:08,119 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 03:03:08,119 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 03:03:08,119 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 03:03:08,119 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 03:03:08,119 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 03:03:08,119 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 03:03:08,122 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 03:03:08,122 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 03:03:08,123 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 03:03:08,123 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 03:03:08,123 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 03:03:08,123 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 03:03:08,123 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 03:03:08,124 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 03:03:08,124 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 03:03:08,124 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 03:03:08,124 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 03:03:08,125 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 03:03:08,125 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 03:03:08,125 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 03:03:08,125 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 03:03:08,125 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 03:03:08,176 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 03:03:08,189 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 03:03:08,193 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 03:03:08,194 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 03:03:08,195 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 03:03:08,196 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label24_true-unreach-call_false-termination.c [2018-10-27 03:03:08,259 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ff14c3407/ac8394c979d44f94a115f7d6d819c4e9/FLAGaf396883b [2018-10-27 03:03:08,916 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 03:03:08,917 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label24_true-unreach-call_false-termination.c [2018-10-27 03:03:08,953 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ff14c3407/ac8394c979d44f94a115f7d6d819c4e9/FLAGaf396883b [2018-10-27 03:03:08,975 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ff14c3407/ac8394c979d44f94a115f7d6d819c4e9 [2018-10-27 03:03:08,989 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 03:03:08,992 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 03:03:08,993 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 03:03:08,994 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 03:03:08,998 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 03:03:08,999 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 03:03:08" (1/1) ... [2018-10-27 03:03:09,002 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f77a5a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:03:09, skipping insertion in model container [2018-10-27 03:03:09,002 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 03:03:08" (1/1) ... [2018-10-27 03:03:09,012 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 03:03:09,090 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 03:03:09,647 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 03:03:09,653 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 03:03:09,833 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 03:03:09,854 INFO L193 MainTranslator]: Completed translation [2018-10-27 03:03:09,855 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:03:09 WrapperNode [2018-10-27 03:03:09,856 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 03:03:09,857 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 03:03:09,857 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 03:03:09,857 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 03:03:09,868 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:03:09" (1/1) ... [2018-10-27 03:03:09,897 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:03:09" (1/1) ... [2018-10-27 03:03:10,182 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 03:03:10,183 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 03:03:10,183 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 03:03:10,183 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 03:03:10,194 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:03:09" (1/1) ... [2018-10-27 03:03:10,194 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:03:09" (1/1) ... [2018-10-27 03:03:10,200 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:03:09" (1/1) ... [2018-10-27 03:03:10,201 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:03:09" (1/1) ... [2018-10-27 03:03:10,229 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:03:09" (1/1) ... [2018-10-27 03:03:10,251 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:03:09" (1/1) ... [2018-10-27 03:03:10,268 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:03:09" (1/1) ... [2018-10-27 03:03:10,282 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 03:03:10,283 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 03:03:10,283 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 03:03:10,283 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 03:03:10,284 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:03:09" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 03:03:10,347 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 03:03:10,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 03:03:10,347 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 03:03:10,347 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 03:03:10,349 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 03:03:10,349 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 03:03:10,349 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 03:03:10,349 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 03:03:13,738 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 03:03:13,741 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 03:03:13 BoogieIcfgContainer [2018-10-27 03:03:13,741 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 03:03:13,742 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 03:03:13,742 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 03:03:13,746 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 03:03:13,746 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 03:03:08" (1/3) ... [2018-10-27 03:03:13,747 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21d2f83d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 03:03:13, skipping insertion in model container [2018-10-27 03:03:13,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:03:09" (2/3) ... [2018-10-27 03:03:13,747 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21d2f83d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 03:03:13, skipping insertion in model container [2018-10-27 03:03:13,748 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 03:03:13" (3/3) ... [2018-10-27 03:03:13,750 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label24_true-unreach-call_false-termination.c [2018-10-27 03:03:13,760 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 03:03:13,769 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 03:03:13,786 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 03:03:13,826 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 03:03:13,828 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 03:03:13,828 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 03:03:13,829 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 03:03:13,829 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 03:03:13,829 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 03:03:13,829 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 03:03:13,829 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 03:03:13,862 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-10-27 03:03:13,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-10-27 03:03:13,871 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:03:13,872 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] [2018-10-27 03:03:13,875 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:03:13,880 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:03:13,880 INFO L82 PathProgramCache]: Analyzing trace with hash -364363092, now seen corresponding path program 1 times [2018-10-27 03:03:13,883 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:03:13,931 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:03:13,931 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:03:13,932 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:03:13,932 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:03:14,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:03:14,361 WARN L179 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 03:03:14,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 03:03:14,463 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 03:03:14,463 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 03:03:14,464 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:03:14,470 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 03:03:14,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 03:03:14,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 03:03:14,490 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 3 states. [2018-10-27 03:03:16,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 03:03:16,298 INFO L93 Difference]: Finished difference Result 691 states and 1226 transitions. [2018-10-27 03:03:16,302 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 03:03:16,303 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 48 [2018-10-27 03:03:16,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 03:03:16,323 INFO L225 Difference]: With dead ends: 691 [2018-10-27 03:03:16,324 INFO L226 Difference]: Without dead ends: 434 [2018-10-27 03:03:16,333 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 03:03:16,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2018-10-27 03:03:16,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 434. [2018-10-27 03:03:16,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2018-10-27 03:03:16,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 765 transitions. [2018-10-27 03:03:16,418 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 765 transitions. Word has length 48 [2018-10-27 03:03:16,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 03:03:16,418 INFO L481 AbstractCegarLoop]: Abstraction has 434 states and 765 transitions. [2018-10-27 03:03:16,418 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 03:03:16,419 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 765 transitions. [2018-10-27 03:03:16,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2018-10-27 03:03:16,427 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:03:16,427 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 03:03:16,428 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:03:16,428 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:03:16,428 INFO L82 PathProgramCache]: Analyzing trace with hash 792460239, now seen corresponding path program 1 times [2018-10-27 03:03:16,428 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:03:16,431 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:03:16,431 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:03:16,431 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:03:16,431 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:03:16,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:03:16,806 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 03:03:16,806 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 03:03:16,806 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 03:03:16,806 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:03:16,809 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 03:03:16,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 03:03:16,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 03:03:16,809 INFO L87 Difference]: Start difference. First operand 434 states and 765 transitions. Second operand 6 states. [2018-10-27 03:03:18,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 03:03:18,995 INFO L93 Difference]: Finished difference Result 1062 states and 1897 transitions. [2018-10-27 03:03:18,995 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 03:03:18,996 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 123 [2018-10-27 03:03:18,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 03:03:19,003 INFO L225 Difference]: With dead ends: 1062 [2018-10-27 03:03:19,003 INFO L226 Difference]: Without dead ends: 634 [2018-10-27 03:03:19,007 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 03:03:19,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2018-10-27 03:03:19,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 625. [2018-10-27 03:03:19,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 625 states. [2018-10-27 03:03:19,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 1019 transitions. [2018-10-27 03:03:19,059 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 1019 transitions. Word has length 123 [2018-10-27 03:03:19,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 03:03:19,060 INFO L481 AbstractCegarLoop]: Abstraction has 625 states and 1019 transitions. [2018-10-27 03:03:19,060 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 03:03:19,061 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 1019 transitions. [2018-10-27 03:03:19,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-10-27 03:03:19,065 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:03:19,068 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 03:03:19,069 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:03:19,069 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:03:19,069 INFO L82 PathProgramCache]: Analyzing trace with hash 1806555924, now seen corresponding path program 1 times [2018-10-27 03:03:19,070 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:03:19,071 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:03:19,071 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:03:19,071 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:03:19,071 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:03:19,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:03:19,347 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 03:03:19,348 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 03:03:19,348 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 03:03:19,348 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:03:19,351 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 03:03:19,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 03:03:19,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 03:03:19,352 INFO L87 Difference]: Start difference. First operand 625 states and 1019 transitions. Second operand 4 states. [2018-10-27 03:03:23,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 03:03:23,649 INFO L93 Difference]: Finished difference Result 2348 states and 3999 transitions. [2018-10-27 03:03:23,651 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 03:03:23,651 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 132 [2018-10-27 03:03:23,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 03:03:23,665 INFO L225 Difference]: With dead ends: 2348 [2018-10-27 03:03:23,665 INFO L226 Difference]: Without dead ends: 1729 [2018-10-27 03:03:23,671 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 03:03:23,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1729 states. [2018-10-27 03:03:23,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1729 to 1729. [2018-10-27 03:03:23,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1729 states. [2018-10-27 03:03:23,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1729 states to 1729 states and 2669 transitions. [2018-10-27 03:03:23,732 INFO L78 Accepts]: Start accepts. Automaton has 1729 states and 2669 transitions. Word has length 132 [2018-10-27 03:03:23,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 03:03:23,733 INFO L481 AbstractCegarLoop]: Abstraction has 1729 states and 2669 transitions. [2018-10-27 03:03:23,733 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 03:03:23,733 INFO L276 IsEmpty]: Start isEmpty. Operand 1729 states and 2669 transitions. [2018-10-27 03:03:23,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2018-10-27 03:03:23,744 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:03:23,744 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 03:03:23,745 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:03:23,745 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:03:23,745 INFO L82 PathProgramCache]: Analyzing trace with hash 38946104, now seen corresponding path program 1 times [2018-10-27 03:03:23,745 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:03:23,746 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:03:23,746 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:03:23,747 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:03:23,747 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:03:23,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:03:24,185 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 82 proven. 70 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-27 03:03:24,185 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 03:03:24,185 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 03:03:24,186 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 237 with the following transitions: [2018-10-27 03:03:24,189 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], [285], [287], [290], [298], [306], [314], [322], [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], [514], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-27 03:03:24,268 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-27 03:03:24,269 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 03:03:26,955 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-27 03:03:29,764 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 03:03:29,766 INFO L272 AbstractInterpreter]: Visited 118 different actions 118 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-27 03:03:29,809 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:03:29,810 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 03:03:32,671 INFO L227 lantSequenceWeakener]: Weakened 228 states. On average, predicates are now at 77.96% of their original sizes. [2018-10-27 03:03:32,671 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 03:03:33,127 INFO L415 sIntCurrentIteration]: We unified 235 AI predicates to 235 [2018-10-27 03:03:33,127 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 03:03:33,131 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 03:03:33,131 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2018-10-27 03:03:33,131 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:03:33,132 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-27 03:03:33,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-27 03:03:33,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-27 03:03:33,133 INFO L87 Difference]: Start difference. First operand 1729 states and 2669 transitions. Second operand 7 states. [2018-10-27 03:03:57,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 03:03:57,991 INFO L93 Difference]: Finished difference Result 3637 states and 5622 transitions. [2018-10-27 03:03:57,991 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 03:03:57,991 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 236 [2018-10-27 03:03:57,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 03:03:58,006 INFO L225 Difference]: With dead ends: 3637 [2018-10-27 03:03:58,006 INFO L226 Difference]: Without dead ends: 1914 [2018-10-27 03:03:58,015 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 236 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-27 03:03:58,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1914 states. [2018-10-27 03:03:58,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1914 to 1912. [2018-10-27 03:03:58,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1912 states. [2018-10-27 03:03:58,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1912 states to 1912 states and 2860 transitions. [2018-10-27 03:03:58,084 INFO L78 Accepts]: Start accepts. Automaton has 1912 states and 2860 transitions. Word has length 236 [2018-10-27 03:03:58,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 03:03:58,085 INFO L481 AbstractCegarLoop]: Abstraction has 1912 states and 2860 transitions. [2018-10-27 03:03:58,085 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-27 03:03:58,085 INFO L276 IsEmpty]: Start isEmpty. Operand 1912 states and 2860 transitions. [2018-10-27 03:03:58,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2018-10-27 03:03:58,097 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:03:58,098 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 03:03:58,098 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:03:58,099 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:03:58,099 INFO L82 PathProgramCache]: Analyzing trace with hash 142855015, now seen corresponding path program 1 times [2018-10-27 03:03:58,099 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:03:58,100 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:03:58,100 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:03:58,100 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:03:58,101 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:03:58,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:03:58,637 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-27 03:03:59,137 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 211 proven. 142 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-27 03:03:59,138 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 03:03:59,138 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 03:03:59,138 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 322 with the following transitions: [2018-10-27 03:03:59,138 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], [285], [287], [290], [298], [306], [314], [322], [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], [514], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [554], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-27 03:03:59,147 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-27 03:03:59,148 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 03:04:01,554 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-27 03:04:05,923 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 03:04:05,923 INFO L272 AbstractInterpreter]: Visited 122 different actions 237 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-27 03:04:05,928 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:04:05,928 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 03:04:09,426 INFO L227 lantSequenceWeakener]: Weakened 104 states. On average, predicates are now at 77.53% of their original sizes. [2018-10-27 03:04:09,427 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 03:04:31,581 INFO L415 sIntCurrentIteration]: We unified 320 AI predicates to 320 [2018-10-27 03:04:31,581 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 03:04:31,581 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 03:04:31,582 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [12] total 28 [2018-10-27 03:04:31,582 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:04:31,583 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-27 03:04:31,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-27 03:04:31,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2018-10-27 03:04:31,584 INFO L87 Difference]: Start difference. First operand 1912 states and 2860 transitions. Second operand 18 states. Received shutdown request... [2018-10-27 03:07:12,693 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-27 03:07:12,693 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-27 03:07:12,698 WARN L205 ceAbstractionStarter]: Timeout [2018-10-27 03:07:12,699 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 03:07:12 BoogieIcfgContainer [2018-10-27 03:07:12,699 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 03:07:12,700 INFO L168 Benchmark]: Toolchain (without parser) took 243708.66 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 2.1 GB in the end (delta: -716.6 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2018-10-27 03:07:12,701 INFO L168 Benchmark]: CDTParser took 0.22 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. [2018-10-27 03:07:12,701 INFO L168 Benchmark]: CACSL2BoogieTranslator took 862.69 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: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-10-27 03:07:12,702 INFO L168 Benchmark]: Boogie Procedure Inliner took 325.79 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 758.1 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -842.6 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. [2018-10-27 03:07:12,703 INFO L168 Benchmark]: Boogie Preprocessor took 99.41 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 14.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. [2018-10-27 03:07:12,704 INFO L168 Benchmark]: RCFGBuilder took 3458.55 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 123.7 MB). Peak memory consumption was 123.7 MB. Max. memory is 7.1 GB. [2018-10-27 03:07:12,705 INFO L168 Benchmark]: TraceAbstraction took 238956.72 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: -54.0 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. [2018-10-27 03:07:12,710 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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 862.69 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: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 325.79 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 758.1 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -842.6 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 99.41 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 14.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3458.55 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 123.7 MB). Peak memory consumption was 123.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 238956.72 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: -54.0 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 127]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 127). Cancelled while BasicCegarLoop was constructing difference of abstraction (1912states) and FLOYD_HOARE automaton (currently 18 states, 18 states before enhancement),while ReachableStatesComputation was computing reachable states (2775 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 255 locations, 1 error locations. TIMEOUT Result, 238.8s OverallTime, 5 OverallIterations, 4 TraceHistogramMax, 194.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 719 SDtfs, 3994 SDslu, 597 SDs, 0 SdLazy, 6235 SolverSat, 1145 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 81.8s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 582 GetRequests, 521 SyntacticMatches, 23 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 23.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1912occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 12.4s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9955966836401617 AbsIntWeakeningRatio, 0.1045045045045045 AbsIntAvgWeakeningVarsNumRemoved, 589.4864864864865 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 4 MinimizatonAttempts, 11 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 860 NumberOfCodeBlocks, 860 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 855 ConstructedInterpolants, 0 QuantifiedInterpolants, 2078885 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 385/597 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown