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/Problem16_label36_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 03:23:23,933 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 03:23:23,935 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 03:23:23,948 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 03:23:23,948 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 03:23:23,950 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 03:23:23,952 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 03:23:23,954 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 03:23:23,956 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 03:23:23,957 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 03:23:23,958 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 03:23:23,958 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 03:23:23,959 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 03:23:23,960 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 03:23:23,961 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 03:23:23,962 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 03:23:23,963 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 03:23:23,965 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 03:23:23,967 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 03:23:23,972 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 03:23:23,974 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 03:23:23,976 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 03:23:23,983 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-27 03:23:23,994 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 03:23:23,995 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 03:23:23,996 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 03:23:23,996 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 03:23:23,997 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 03:23:24,025 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 03:23:24,026 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 03:23:24,026 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 03:23:24,027 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 03:23:24,028 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 03:23:24,028 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 03:23:24,028 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 03:23:24,028 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 03:23:24,028 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 03:23:24,029 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 03:23:24,029 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 03:23:24,029 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 03:23:24,030 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 03:23:24,030 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 03:23:24,030 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 03:23:24,031 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 03:23:24,031 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 03:23:24,031 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 03:23:24,031 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 03:23:24,031 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 03:23:24,031 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 03:23:24,032 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 03:23:24,032 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 03:23:24,032 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 03:23:24,032 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 03:23:24,032 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 03:23:24,033 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 03:23:24,033 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 03:23:24,033 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 03:23:24,033 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 03:23:24,033 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 03:23:24,034 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 03:23:24,034 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 03:23:24,034 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 03:23:24,102 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 03:23:24,123 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 03:23:24,128 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 03:23:24,130 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 03:23:24,131 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 03:23:24,131 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label36_true-unreach-call.c [2018-10-27 03:23:24,205 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/013ed6560/5a47326472b14b559b71fbbfa362e2d5/FLAG6468e1a81 [2018-10-27 03:23:24,906 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 03:23:24,906 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label36_true-unreach-call.c [2018-10-27 03:23:24,928 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/013ed6560/5a47326472b14b559b71fbbfa362e2d5/FLAG6468e1a81 [2018-10-27 03:23:24,946 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/013ed6560/5a47326472b14b559b71fbbfa362e2d5 [2018-10-27 03:23:24,960 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 03:23:24,961 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 03:23:24,963 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 03:23:24,963 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 03:23:24,967 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 03:23:24,968 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 03:23:24" (1/1) ... [2018-10-27 03:23:24,971 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14b692d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:23:24, skipping insertion in model container [2018-10-27 03:23:24,971 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 03:23:24" (1/1) ... [2018-10-27 03:23:24,981 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 03:23:25,078 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 03:23:26,011 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 03:23:26,016 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 03:23:26,291 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 03:23:26,321 INFO L193 MainTranslator]: Completed translation [2018-10-27 03:23:26,321 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:23:26 WrapperNode [2018-10-27 03:23:26,321 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 03:23:26,322 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 03:23:26,323 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 03:23:26,323 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 03:23:26,333 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:23:26" (1/1) ... [2018-10-27 03:23:26,372 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:23:26" (1/1) ... [2018-10-27 03:23:26,656 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 03:23:26,657 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 03:23:26,657 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 03:23:26,657 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 03:23:26,669 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:23:26" (1/1) ... [2018-10-27 03:23:26,669 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:23:26" (1/1) ... [2018-10-27 03:23:26,683 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:23:26" (1/1) ... [2018-10-27 03:23:26,684 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:23:26" (1/1) ... [2018-10-27 03:23:26,741 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:23:26" (1/1) ... [2018-10-27 03:23:26,758 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:23:26" (1/1) ... [2018-10-27 03:23:26,781 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:23:26" (1/1) ... [2018-10-27 03:23:26,799 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 03:23:26,799 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 03:23:26,800 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 03:23:26,800 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 03:23:26,801 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:23:26" (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 03:23:26,870 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 03:23:26,871 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 03:23:26,871 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 03:23:26,871 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 03:23:26,872 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 03:23:26,872 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 03:23:26,872 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 03:23:26,872 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 03:23:26,872 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 03:23:26,873 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 03:23:32,628 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 03:23:32,629 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 03:23:32 BoogieIcfgContainer [2018-10-27 03:23:32,630 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 03:23:32,631 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 03:23:32,632 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 03:23:32,635 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 03:23:32,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 03:23:24" (1/3) ... [2018-10-27 03:23:32,636 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@433d0341 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 03:23:32, skipping insertion in model container [2018-10-27 03:23:32,636 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:23:26" (2/3) ... [2018-10-27 03:23:32,637 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@433d0341 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 03:23:32, skipping insertion in model container [2018-10-27 03:23:32,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 03:23:32" (3/3) ... [2018-10-27 03:23:32,639 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label36_true-unreach-call.c [2018-10-27 03:23:32,649 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 03:23:32,658 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 03:23:32,676 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 03:23:32,725 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 03:23:32,726 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 03:23:32,726 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 03:23:32,726 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 03:23:32,726 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 03:23:32,726 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 03:23:32,726 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 03:23:32,727 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 03:23:32,757 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states. [2018-10-27 03:23:32,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-10-27 03:23:32,766 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:23:32,767 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] [2018-10-27 03:23:32,769 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:23:32,775 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:23:32,776 INFO L82 PathProgramCache]: Analyzing trace with hash -1717758157, now seen corresponding path program 1 times [2018-10-27 03:23:32,779 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:23:32,838 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:23:32,838 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:23:32,838 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:23:32,839 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:23:32,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:23:33,258 WARN L179 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 03:23:33,368 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 03:23:33,370 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 03:23:33,371 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 03:23:33,371 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:23:33,377 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 03:23:33,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 03:23:33,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 03:23:33,398 INFO L87 Difference]: Start difference. First operand 410 states. Second operand 3 states. [2018-10-27 03:23:37,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 03:23:37,479 INFO L93 Difference]: Finished difference Result 1156 states and 2144 transitions. [2018-10-27 03:23:37,483 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 03:23:37,485 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 43 [2018-10-27 03:23:37,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 03:23:37,513 INFO L225 Difference]: With dead ends: 1156 [2018-10-27 03:23:37,513 INFO L226 Difference]: Without dead ends: 744 [2018-10-27 03:23:37,523 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 03:23:37,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2018-10-27 03:23:37,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2018-10-27 03:23:37,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-10-27 03:23:37,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1329 transitions. [2018-10-27 03:23:37,647 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1329 transitions. Word has length 43 [2018-10-27 03:23:37,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 03:23:37,648 INFO L481 AbstractCegarLoop]: Abstraction has 744 states and 1329 transitions. [2018-10-27 03:23:37,648 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 03:23:37,648 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1329 transitions. [2018-10-27 03:23:37,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2018-10-27 03:23:37,658 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:23:37,658 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:23:37,659 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:23:37,659 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:23:37,659 INFO L82 PathProgramCache]: Analyzing trace with hash -1480398480, now seen corresponding path program 1 times [2018-10-27 03:23:37,659 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:23:37,660 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:23:37,661 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:23:37,661 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:23:37,661 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:23:37,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:23:38,197 WARN L179 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 03:23:38,296 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 03:23:38,296 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 03:23:38,296 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 03:23:38,296 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:23:38,299 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 03:23:38,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 03:23:38,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 03:23:38,300 INFO L87 Difference]: Start difference. First operand 744 states and 1329 transitions. Second operand 6 states. [2018-10-27 03:23:46,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 03:23:46,176 INFO L93 Difference]: Finished difference Result 2183 states and 3908 transitions. [2018-10-27 03:23:46,178 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 03:23:46,178 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 151 [2018-10-27 03:23:46,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 03:23:46,190 INFO L225 Difference]: With dead ends: 2183 [2018-10-27 03:23:46,191 INFO L226 Difference]: Without dead ends: 1445 [2018-10-27 03:23:46,197 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 03:23:46,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1445 states. [2018-10-27 03:23:46,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1445 to 1424. [2018-10-27 03:23:46,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1424 states. [2018-10-27 03:23:46,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1424 states to 1424 states and 2239 transitions. [2018-10-27 03:23:46,274 INFO L78 Accepts]: Start accepts. Automaton has 1424 states and 2239 transitions. Word has length 151 [2018-10-27 03:23:46,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 03:23:46,275 INFO L481 AbstractCegarLoop]: Abstraction has 1424 states and 2239 transitions. [2018-10-27 03:23:46,275 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 03:23:46,275 INFO L276 IsEmpty]: Start isEmpty. Operand 1424 states and 2239 transitions. [2018-10-27 03:23:46,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2018-10-27 03:23:46,288 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:23:46,288 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:23:46,289 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:23:46,289 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:23:46,289 INFO L82 PathProgramCache]: Analyzing trace with hash 1587453149, now seen corresponding path program 1 times [2018-10-27 03:23:46,289 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:23:46,290 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:23:46,291 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:23:46,291 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:23:46,291 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:23:46,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:23:46,559 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 03:23:46,559 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 03:23:46,559 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 03:23:46,560 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:23:46,560 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 03:23:46,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 03:23:46,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 03:23:46,561 INFO L87 Difference]: Start difference. First operand 1424 states and 2239 transitions. Second operand 6 states. [2018-10-27 03:23:51,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 03:23:51,065 INFO L93 Difference]: Finished difference Result 3902 states and 6351 transitions. [2018-10-27 03:23:51,065 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 03:23:51,065 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 154 [2018-10-27 03:23:51,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 03:23:51,081 INFO L225 Difference]: With dead ends: 3902 [2018-10-27 03:23:51,081 INFO L226 Difference]: Without dead ends: 2484 [2018-10-27 03:23:51,086 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 03:23:51,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2484 states. [2018-10-27 03:23:51,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2484 to 2474. [2018-10-27 03:23:51,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2474 states. [2018-10-27 03:23:51,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2474 states to 2474 states and 3744 transitions. [2018-10-27 03:23:51,161 INFO L78 Accepts]: Start accepts. Automaton has 2474 states and 3744 transitions. Word has length 154 [2018-10-27 03:23:51,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 03:23:51,161 INFO L481 AbstractCegarLoop]: Abstraction has 2474 states and 3744 transitions. [2018-10-27 03:23:51,161 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 03:23:51,162 INFO L276 IsEmpty]: Start isEmpty. Operand 2474 states and 3744 transitions. [2018-10-27 03:23:51,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2018-10-27 03:23:51,167 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:23:51,167 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 03:23:51,168 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:23:51,168 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:23:51,168 INFO L82 PathProgramCache]: Analyzing trace with hash 644165232, now seen corresponding path program 1 times [2018-10-27 03:23:51,168 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:23:51,169 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:23:51,170 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:23:51,170 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:23:51,170 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:23:51,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:23:51,498 WARN L179 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 03:23:51,926 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 72 proven. 106 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-27 03:23:51,927 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 03:23:51,927 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 03:23:51,928 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 271 with the following transitions: [2018-10-27 03:23:51,931 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [423], [425], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [837], [841], [845], [849], [853], [856], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-10-27 03:23:52,030 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-27 03:23:52,030 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 03:23:54,880 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 03:23:54,882 INFO L272 AbstractInterpreter]: Visited 121 different actions 121 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-27 03:23:54,896 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:23:54,896 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 03:23:57,120 INFO L227 lantSequenceWeakener]: Weakened 262 states. On average, predicates are now at 77.78% of their original sizes. [2018-10-27 03:23:57,120 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 03:23:57,581 INFO L415 sIntCurrentIteration]: We unified 269 AI predicates to 269 [2018-10-27 03:23:57,582 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 03:23:57,583 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 03:23:57,583 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-10-27 03:23:57,583 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:23:57,584 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-27 03:23:57,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-27 03:23:57,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-27 03:23:57,585 INFO L87 Difference]: Start difference. First operand 2474 states and 3744 transitions. Second operand 7 states. [2018-10-27 03:24:00,551 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-27 03:24:26,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 03:24:26,399 INFO L93 Difference]: Finished difference Result 5282 states and 7967 transitions. [2018-10-27 03:24:26,399 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 03:24:26,399 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 270 [2018-10-27 03:24:26,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 03:24:26,418 INFO L225 Difference]: With dead ends: 5282 [2018-10-27 03:24:26,419 INFO L226 Difference]: Without dead ends: 2814 [2018-10-27 03:24:26,427 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 270 GetRequests, 264 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 03:24:26,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2814 states. [2018-10-27 03:24:26,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2814 to 2812. [2018-10-27 03:24:26,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2812 states. [2018-10-27 03:24:26,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2812 states to 2812 states and 4089 transitions. [2018-10-27 03:24:26,509 INFO L78 Accepts]: Start accepts. Automaton has 2812 states and 4089 transitions. Word has length 270 [2018-10-27 03:24:26,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 03:24:26,510 INFO L481 AbstractCegarLoop]: Abstraction has 2812 states and 4089 transitions. [2018-10-27 03:24:26,510 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-27 03:24:26,510 INFO L276 IsEmpty]: Start isEmpty. Operand 2812 states and 4089 transitions. [2018-10-27 03:24:26,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2018-10-27 03:24:26,519 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:24:26,519 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 03:24:26,520 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:24:26,520 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:24:26,520 INFO L82 PathProgramCache]: Analyzing trace with hash -1956339661, now seen corresponding path program 1 times [2018-10-27 03:24:26,520 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:24:26,521 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:24:26,522 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:24:26,522 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:24:26,522 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:24:26,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:24:26,869 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 203 proven. 110 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2018-10-27 03:24:26,870 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 03:24:26,870 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 03:24:26,870 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 363 with the following transitions: [2018-10-27 03:24:26,870 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [423], [425], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [760], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [837], [841], [845], [849], [853], [856], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-10-27 03:24:26,878 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-27 03:24:26,878 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 03:24:28,051 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-27 03:24:39,577 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 03:24:39,578 INFO L272 AbstractInterpreter]: Visited 125 different actions 481 times. Merged at 5 different actions 14 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-27 03:24:39,590 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:24:39,590 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 03:24:44,275 INFO L227 lantSequenceWeakener]: Weakened 36 states. On average, predicates are now at 79.17% of their original sizes. [2018-10-27 03:24:44,276 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 03:25:55,417 INFO L415 sIntCurrentIteration]: We unified 361 AI predicates to 361 [2018-10-27 03:25:55,417 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 03:25:55,418 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 03:25:55,418 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [15] imperfect sequences [6] total 19 [2018-10-27 03:25:55,418 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:25:55,419 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-27 03:25:55,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-27 03:25:55,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2018-10-27 03:25:55,420 INFO L87 Difference]: Start difference. First operand 2812 states and 4089 transitions. Second operand 15 states. Received shutdown request... [2018-10-27 03:27:24,588 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-27 03:27:24,589 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-27 03:27:24,600 WARN L205 ceAbstractionStarter]: Timeout [2018-10-27 03:27:24,601 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 03:27:24 BoogieIcfgContainer [2018-10-27 03:27:24,601 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 03:27:24,602 INFO L168 Benchmark]: Toolchain (without parser) took 239641.72 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.5 GB). Free memory was 1.4 GB in the beginning and 1.7 GB in the end (delta: -240.4 MB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. [2018-10-27 03:27:24,603 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-27 03:27:24,604 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1358.86 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: 74.0 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. [2018-10-27 03:27:24,608 INFO L168 Benchmark]: Boogie Procedure Inliner took 334.28 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 753.4 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -856.2 MB). Peak memory consumption was 28.7 MB. Max. memory is 7.1 GB. [2018-10-27 03:27:24,609 INFO L168 Benchmark]: Boogie Preprocessor took 141.98 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: 27.3 MB). Peak memory consumption was 27.3 MB. Max. memory is 7.1 GB. [2018-10-27 03:27:24,609 INFO L168 Benchmark]: RCFGBuilder took 5831.10 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 254.4 MB). Peak memory consumption was 254.4 MB. Max. memory is 7.1 GB. [2018-10-27 03:27:24,612 INFO L168 Benchmark]: TraceAbstraction took 231969.71 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 1.9 GB in the beginning and 1.7 GB in the end (delta: 260.1 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. [2018-10-27 03:27:24,620 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 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1358.86 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: 74.0 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 334.28 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 753.4 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -856.2 MB). Peak memory consumption was 28.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 141.98 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: 27.3 MB). Peak memory consumption was 27.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 5831.10 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 254.4 MB). Peak memory consumption was 254.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 231969.71 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 1.9 GB in the beginning and 1.7 GB in the end (delta: 260.1 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 115]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 115). Cancelled while BasicCegarLoop was constructing difference of abstraction (2812states) and FLOYD_HOARE automaton (currently 16 states, 15 states before enhancement),while ReachableStatesComputation was computing reachable states (511 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 410 locations, 1 error locations. TIMEOUT Result, 231.8s OverallTime, 5 OverallIterations, 4 TraceHistogramMax, 134.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 778 SDtfs, 6026 SDslu, 401 SDs, 0 SdLazy, 6737 SolverSat, 2243 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 52.2s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 663 GetRequests, 519 SyntacticMatches, 103 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 405 ImplicationChecksByTransitivity, 73.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2812occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 15.6s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9961208879687139 AbsIntWeakeningRatio, 0.09206349206349207 AbsIntAvgWeakeningVarsNumRemoved, 444.62380952380954 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 4 MinimizatonAttempts, 33 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 980 NumberOfCodeBlocks, 980 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 975 ConstructedInterpolants, 0 QuantifiedInterpolants, 724108 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 442/658 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown